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New list with sticky list headers library

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This commit is contained in:
Dominik Schürmann
2014-01-02 21:10:08 +01:00
parent 1d91804dc7
commit f5da63f988
63 changed files with 3687 additions and 61 deletions
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2
libraries/StickyListHeaders/library/.gitignore vendored Normal file
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.gradle
build

11
libraries/StickyListHeaders/library/AndroidManifest.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="se.emilsjolander.stickylistheaders"
android:versionCode="2"
android:versionName="2.0" >
<uses-sdk
android:minSdkVersion="7"
android:targetSdkVersion="18" />
</manifest>

16
libraries/StickyListHeaders/library/build.gradle Normal file
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apply plugin: 'android-library'
android {
compileSdkVersion 19
buildToolsVersion '19.0.0'
sourceSets {
main {
manifest.srcFile 'AndroidManifest.xml'
java.srcDirs = ['src']
res.srcDirs = ['res']
}
}
}
apply from: 'https://raw.github.com/chrisbanes/gradle-mvn-push/eaa6b5404b7594e6c23b884fdc5795f545db55dd/gradle-mvn-push.gradle'

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libraries/StickyListHeaders/library/build.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project name="library" default="help">
<!-- The local.properties file is created and updated by the 'android' tool.
It contains the path to the SDK. It should *NOT* be checked into
Version Control Systems. -->
<property file="local.properties" />
<!-- The ant.properties file can be created by you. It is only edited by the
'android' tool to add properties to it.
This is the place to change some Ant specific build properties.
Here are some properties you may want to change/update:
source.dir
The name of the source directory. Default is 'src'.
out.dir
The name of the output directory. Default is 'bin'.
For other overridable properties, look at the beginning of the rules
files in the SDK, at tools/ant/build.xml
Properties related to the SDK location or the project target should
be updated using the 'android' tool with the 'update' action.
This file is an integral part of the build system for your
application and should be checked into Version Control Systems.
-->
<property file="ant.properties" />
<!-- if sdk.dir was not set from one of the property file, then
get it from the ANDROID_HOME env var.
This must be done before we load project.properties since
the proguard config can use sdk.dir -->
<property environment="env" />
<condition property="sdk.dir" value="${env.ANDROID_HOME}">
<isset property="env.ANDROID_HOME" />
</condition>
<!-- The project.properties file is created and updated by the 'android'
tool, as well as ADT.
This contains project specific properties such as project target, and library
dependencies. Lower level build properties are stored in ant.properties
(or in .classpath for Eclipse projects).
This file is an integral part of the build system for your
application and should be checked into Version Control Systems. -->
<loadproperties srcFile="project.properties" />
<!-- quick check on sdk.dir -->
<fail
message="sdk.dir is missing. Make sure to generate local.properties using 'android update project' or to inject it through the ANDROID_HOME environment variable."
unless="sdk.dir"
/>
<!--
Import per project custom build rules if present at the root of the project.
This is the place to put custom intermediary targets such as:
-pre-build
-pre-compile
-post-compile (This is typically used for code obfuscation.
Compiled code location: ${out.classes.absolute.dir}
If this is not done in place, override ${out.dex.input.absolute.dir})
-post-package
-post-build
-pre-clean
-->
<import file="custom_rules.xml" optional="true" />
<!-- Import the actual build file.
To customize existing targets, there are two options:
- Customize only one target:
- copy/paste the target into this file, *before* the
<import> task.
- customize it to your needs.
- Customize the whole content of build.xml
- copy/paste the content of the rules files (minus the top node)
into this file, replacing the <import> task.
- customize to your needs.
***********************
****** IMPORTANT ******
***********************
In all cases you must update the value of version-tag below to read 'custom' instead of an integer,
in order to avoid having your file be overridden by tools such as "android update project"
-->
<!-- version-tag: 1 -->
<import file="${sdk.dir}/tools/ant/build.xml" />
</project>

20
libraries/StickyListHeaders/library/proguard-project.txt Normal file
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# To enable ProGuard in your project, edit project.properties
# to define the proguard.config property as described in that file.
#
# Add project specific ProGuard rules here.
# By default, the flags in this file are appended to flags specified
# in ${sdk.dir}/tools/proguard/proguard-android.txt
# You can edit the include path and order by changing the ProGuard
# include property in project.properties.
#
# For more details, see
# http://developer.android.com/guide/developing/tools/proguard.html
# Add any project specific keep options here:
# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
# public *;
#}

15
libraries/StickyListHeaders/library/project.properties Normal file
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# This file is automatically generated by Android Tools.
# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
#
# This file must be checked in Version Control Systems.
#
# To customize properties used by the Ant build system edit
# "ant.properties", and override values to adapt the script to your
# project structure.
#
# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
# Project target.
target=android-19
android.library=true

32
libraries/StickyListHeaders/library/res/values/attrs.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="StickyListHeadersListView">
<!-- View attributes -->
<attr name="android:clipToPadding" />
<attr name="android:padding" />
<attr name="android:paddingLeft" />
<attr name="android:paddingTop" />
<attr name="android:paddingRight" />
<attr name="android:paddingBottom" />
<!-- ListView attributes -->
<attr name="android:fadingEdgeLength" />
<attr name="android:requiresFadingEdge" />
<attr name="android:cacheColorHint" />
<attr name="android:choiceMode" />
<attr name="android:drawSelectorOnTop" />
<attr name="android:fastScrollEnabled" />
<attr name="android:fastScrollAlwaysVisible" />
<attr name="android:listSelector" />
<attr name="android:scrollingCache" />
<attr name="android:scrollbarStyle" />
<attr name="android:divider" />
<attr name="android:dividerHeight" />
<!-- StickyListHeaders attributes -->
<attr name="hasStickyHeaders" format="boolean" />
<attr name="isDrawingListUnderStickyHeader" format="boolean" />
</declare-styleable>
</resources>

225
libraries/StickyListHeaders/library/src/se/emilsjolander/stickylistheaders/AdapterWrapper.java Normal file
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package se.emilsjolander.stickylistheaders;
import java.util.LinkedList;
import java.util.List;
import android.content.Context;
import android.database.DataSetObserver;
import android.graphics.drawable.Drawable;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Checkable;
import android.widget.ListAdapter;
/**
* A {@link ListAdapter} which wraps a {@link StickyListHeadersAdapter} and
* automatically handles wrapping the result of
* {@link StickyListHeadersAdapter#getView(int, android.view.View, android.view.ViewGroup)}
* and
* {@link StickyListHeadersAdapter#getHeaderView(int, android.view.View, android.view.ViewGroup)}
* appropriately.
*
* @author Jake Wharton (jakewharton@gmail.com)
*/
class AdapterWrapper extends BaseAdapter implements StickyListHeadersAdapter {
interface OnHeaderClickListener {
public void onHeaderClick(View header, int itemPosition, long headerId);
}
final StickyListHeadersAdapter mDelegate;
private final List<View> mHeaderCache = new LinkedList<View>();
private final Context mContext;
private Drawable mDivider;
private int mDividerHeight;
private OnHeaderClickListener mOnHeaderClickListener;
private DataSetObserver mDataSetObserver = new DataSetObserver() {
@Override
public void onInvalidated() {
mHeaderCache.clear();
AdapterWrapper.super.notifyDataSetInvalidated();
}
@Override
public void onChanged() {
AdapterWrapper.super.notifyDataSetChanged();
}
};
AdapterWrapper(Context context,
StickyListHeadersAdapter delegate) {
this.mContext = context;
this.mDelegate = delegate;
delegate.registerDataSetObserver(mDataSetObserver);
}
void setDivider(Drawable divider, int dividerHeight) {
this.mDivider = divider;
this.mDividerHeight = dividerHeight;
notifyDataSetChanged();
}
@Override
public boolean areAllItemsEnabled() {
return mDelegate.areAllItemsEnabled();
}
@Override
public boolean isEnabled(int position) {
return mDelegate.isEnabled(position);
}
@Override
public int getCount() {
return mDelegate.getCount();
}
@Override
public Object getItem(int position) {
return mDelegate.getItem(position);
}
@Override
public long getItemId(int position) {
return mDelegate.getItemId(position);
}
@Override
public boolean hasStableIds() {
return mDelegate.hasStableIds();
}
@Override
public int getItemViewType(int position) {
return mDelegate.getItemViewType(position);
}
@Override
public int getViewTypeCount() {
return mDelegate.getViewTypeCount();
}
@Override
public boolean isEmpty() {
return mDelegate.isEmpty();
}
/**
* Will recycle header from {@link WrapperView} if it exists
*/
private void recycleHeaderIfExists(WrapperView wv) {
View header = wv.mHeader;
if (header != null) {
// reset the headers visibility when adding it to the cache
header.setVisibility(View.VISIBLE);
mHeaderCache.add(header);
}
}
/**
* Get a header view. This optionally pulls a header from the supplied
* {@link WrapperView} and will also recycle the divider if it exists.
*/
private View configureHeader(WrapperView wv, final int position) {
View header = wv.mHeader == null ? popHeader() : wv.mHeader;
header = mDelegate.getHeaderView(position, header, wv);
if (header == null) {
throw new NullPointerException("Header view must not be null.");
}
//if the header isn't clickable, the listselector will be drawn on top of the header
header.setClickable(true);
header.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if(mOnHeaderClickListener != null){
long headerId = mDelegate.getHeaderId(position);
mOnHeaderClickListener.onHeaderClick(v, position, headerId);
}
}
});
return header;
}
private View popHeader() {
if(mHeaderCache.size() > 0) {
return mHeaderCache.remove(0);
}
return null;
}
/** Returns {@code true} if the previous position has the same header ID. */
private boolean previousPositionHasSameHeader(int position) {
return position != 0
&& mDelegate.getHeaderId(position) == mDelegate
.getHeaderId(position - 1);
}
@Override
public WrapperView getView(int position, View convertView, ViewGroup parent) {
WrapperView wv = (convertView == null) ? new WrapperView(mContext) : (WrapperView) convertView;
View item = mDelegate.getView(position, wv.mItem, parent);
View header = null;
if (previousPositionHasSameHeader(position)) {
recycleHeaderIfExists(wv);
} else {
header = configureHeader(wv, position);
}
if((item instanceof Checkable) && !(wv instanceof CheckableWrapperView)) {
// Need to create Checkable subclass of WrapperView for ListView to work correctly
wv = new CheckableWrapperView(mContext);
} else if(!(item instanceof Checkable) && (wv instanceof CheckableWrapperView)) {
wv = new WrapperView(mContext);
}
wv.update(item, header, mDivider, mDividerHeight);
return wv;
}
public void setOnHeaderClickListener(OnHeaderClickListener onHeaderClickListener){
this.mOnHeaderClickListener = onHeaderClickListener;
}
@Override
public boolean equals(Object o) {
return mDelegate.equals(o);
}
@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
return ((BaseAdapter) mDelegate).getDropDownView(position, convertView, parent);
}
@Override
public int hashCode() {
return mDelegate.hashCode();
}
@Override
public void notifyDataSetChanged() {
((BaseAdapter) mDelegate).notifyDataSetChanged();
}
@Override
public void notifyDataSetInvalidated() {
((BaseAdapter) mDelegate).notifyDataSetInvalidated();
}
@Override
public String toString() {
return mDelegate.toString();
}
@Override
public View getHeaderView(int position, View convertView, ViewGroup parent) {
return mDelegate.getHeaderView(position, convertView, parent);
}
@Override
public long getHeaderId(int position) {
return mDelegate.getHeaderId(position);
}
}

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libraries/StickyListHeaders/library/src/se/emilsjolander/stickylistheaders/ApiLevelTooLowException.java Normal file
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package se.emilsjolander.stickylistheaders;
public class ApiLevelTooLowException extends RuntimeException {
private static final long serialVersionUID = -5480068364264456757L;
public ApiLevelTooLowException(int versionCode) {
super("Requires API level " + versionCode);
}
}

31
libraries/StickyListHeaders/library/src/se/emilsjolander/stickylistheaders/CheckableWrapperView.java Normal file
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package se.emilsjolander.stickylistheaders;
import android.content.Context;
import android.widget.Checkable;
/**
* A WrapperView that implements the checkable interface
*
* @author Emil Sjölander
*/
class CheckableWrapperView extends WrapperView implements Checkable {
public CheckableWrapperView(final Context context) {
super(context);
}
@Override
public boolean isChecked() {
return ((Checkable) mItem).isChecked();
}
@Override
public void setChecked(final boolean checked) {
((Checkable) mItem).setChecked(checked);
}
@Override
public void toggle() {
setChecked(!isChecked());
}
}

32
libraries/StickyListHeaders/library/src/se/emilsjolander/stickylistheaders/SectionIndexerAdapterWrapper.java Normal file
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package se.emilsjolander.stickylistheaders;
import android.content.Context;
import android.widget.SectionIndexer;
class SectionIndexerAdapterWrapper extends
AdapterWrapper implements SectionIndexer {
final SectionIndexer mSectionIndexerDelegate;
SectionIndexerAdapterWrapper(Context context,
StickyListHeadersAdapter delegate) {
super(context, delegate);
mSectionIndexerDelegate = (SectionIndexer) delegate;
}
@Override
public int getPositionForSection(int section) {
return mSectionIndexerDelegate.getPositionForSection(section);
}
@Override
public int getSectionForPosition(int position) {
return mSectionIndexerDelegate.getSectionForPosition(position);
}
@Override
public Object[] getSections() {
return mSectionIndexerDelegate.getSections();
}
}

38
libraries/StickyListHeaders/library/src/se/emilsjolander/stickylistheaders/StickyListHeadersAdapter.java Normal file
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package se.emilsjolander.stickylistheaders;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListAdapter;
public interface StickyListHeadersAdapter extends ListAdapter {
/**
* Get a View that displays the header data at the specified position in the
* set. You can either create a View manually or inflate it from an XML layout
* file.
*
* @param position
* The position of the item within the adapter's data set of the item whose
* header view we want.
* @param convertView
* The old view to reuse, if possible. Note: You should check that this view is
* non-null and of an appropriate type before using. If it is not possible to
* convert this view to display the correct data, this method can create a new
* view.
* @param parent
* The parent that this view will eventually be attached to.
* @return
* A View corresponding to the data at the specified position.
*/
View getHeaderView(int position, View convertView, ViewGroup parent);
/**
* Get the header id associated with the specified position in the list.
*
* @param position
* The position of the item within the adapter's data set whose header id we
* want.
* @return
* The id of the header at the specified position.
*/
long getHeaderId(int position);
}

925
libraries/StickyListHeaders/library/src/se/emilsjolander/stickylistheaders/StickyListHeadersListView.java Normal file
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package se.emilsjolander.stickylistheaders;
import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.content.Context;
import android.content.res.TypedArray;
import android.database.DataSetObserver;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.util.AttributeSet;
import android.util.Log;
import android.util.SparseBooleanArray;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.FrameLayout;
import android.widget.ListView;
import android.widget.SectionIndexer;
import se.emilsjolander.stickylistheaders.WrapperViewList.LifeCycleListener;
/**
* Even though this is a FrameLayout subclass we it is called a ListView. This
* is because of 2 reasons. 1. It acts like as ListView 2. It used to be a
* ListView subclass and i did not was to change to name causing compatibility
* errors.
*
* @author Emil Sjölander
*/
public class StickyListHeadersListView extends FrameLayout {
public interface OnHeaderClickListener {
public void onHeaderClick(StickyListHeadersListView l, View header,
int itemPosition, long headerId, boolean currentlySticky);
}
/**
* Notifies the listener when the sticky headers top offset has changed.
*/
public interface OnStickyHeaderOffsetChangedListener {
/**
* @param l The view parent
* @param header The currently sticky header being offset.
* This header is not guaranteed to have it's measurements set.
* It is however guaranteed that this view has been measured,
* therefor you should user getMeasured* methods instead of
* get* methods for determining the view's size.
* @param offset The amount the sticky header is offset by towards to top of the screen.
*/
public void onStickyHeaderOffsetChanged(StickyListHeadersListView l, View header, int offset);
}
/* --- Children --- */
private WrapperViewList mList;
private View mHeader;
/* --- Header state --- */
private Long mHeaderId;
// used to not have to call getHeaderId() all the time
private Integer mHeaderPosition;
private Integer mHeaderOffset;
/* --- Delegates --- */
private OnScrollListener mOnScrollListenerDelegate;
private AdapterWrapper mAdapter;
/* --- Settings --- */
private boolean mAreHeadersSticky = true;
private boolean mClippingToPadding = true;
private boolean mIsDrawingListUnderStickyHeader = true;
private int mPaddingLeft = 0;
private int mPaddingTop = 0;
private int mPaddingRight = 0;
private int mPaddingBottom = 0;
/* --- Other --- */
private OnHeaderClickListener mOnHeaderClickListener;
private OnStickyHeaderOffsetChangedListener mOnStickyHeaderOffsetChangedListener;
private AdapterWrapperDataSetObserver mDataSetObserver;
private Drawable mDivider;
private int mDividerHeight;
public StickyListHeadersListView(Context context) {
this(context, null);
}
public StickyListHeadersListView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public StickyListHeadersListView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// Initialize the wrapped list
mList = new WrapperViewList(context);
// null out divider, dividers are handled by adapter so they look good with headers
mDivider = mList.getDivider();
mDividerHeight = mList.getDividerHeight();
mList.setDivider(null);
mList.setDividerHeight(0);
mList.setVerticalScrollBarEnabled(isVerticalScrollBarEnabled());
mList.setHorizontalScrollBarEnabled(isHorizontalScrollBarEnabled());
if (attrs != null) {
TypedArray a = context.getTheme().obtainStyledAttributes(attrs,R.styleable.StickyListHeadersListView, 0, 0);
try {
// -- View attributes --
int padding = a.getDimensionPixelSize(R.styleable.StickyListHeadersListView_android_padding, 0);
mPaddingLeft = a.getDimensionPixelSize(R.styleable.StickyListHeadersListView_android_paddingLeft, padding);
mPaddingTop = a.getDimensionPixelSize(R.styleable.StickyListHeadersListView_android_paddingTop, padding);
mPaddingRight = a.getDimensionPixelSize(R.styleable.StickyListHeadersListView_android_paddingRight, padding);
mPaddingBottom = a.getDimensionPixelSize(R.styleable.StickyListHeadersListView_android_paddingBottom, padding);
setPadding(mPaddingLeft, mPaddingTop, mPaddingRight,
mPaddingBottom);
// Set clip to padding on the list and reset value to default on
// wrapper
mClippingToPadding = a.getBoolean(R.styleable.StickyListHeadersListView_android_clipToPadding, true);
super.setClipToPadding(true);
mList.setClipToPadding(mClippingToPadding);
// -- ListView attributes --
mList.setFadingEdgeLength(a.getDimensionPixelSize(R.styleable.StickyListHeadersListView_android_fadingEdgeLength,
mList.getVerticalFadingEdgeLength()));
final int fadingEdge = a.getInt(R.styleable.StickyListHeadersListView_android_requiresFadingEdge, 0);
if (fadingEdge == 0x00001000) {
mList.setVerticalFadingEdgeEnabled(false);
mList.setHorizontalFadingEdgeEnabled(true);
} else if (fadingEdge == 0x00002000) {
mList.setVerticalFadingEdgeEnabled(true);
mList.setHorizontalFadingEdgeEnabled(false);
} else {
mList.setVerticalFadingEdgeEnabled(false);
mList.setHorizontalFadingEdgeEnabled(false);
}
mList.setCacheColorHint(a
.getColor(R.styleable.StickyListHeadersListView_android_cacheColorHint, mList.getCacheColorHint()));
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
mList.setChoiceMode(a.getInt(R.styleable.StickyListHeadersListView_android_choiceMode,
mList.getChoiceMode()));
}
mList.setDrawSelectorOnTop(a.getBoolean(R.styleable.StickyListHeadersListView_android_drawSelectorOnTop, false));
mList.setFastScrollEnabled(a.getBoolean(R.styleable.StickyListHeadersListView_android_fastScrollEnabled,
mList.isFastScrollEnabled()));
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
mList.setFastScrollAlwaysVisible(a.getBoolean(
R.styleable.StickyListHeadersListView_android_fastScrollAlwaysVisible,
mList.isFastScrollAlwaysVisible()));
}
mList.setScrollBarStyle(a.getInt(R.styleable.StickyListHeadersListView_android_scrollbarStyle, 0));
if (a.hasValue(R.styleable.StickyListHeadersListView_android_listSelector)) {
mList.setSelector(a.getDrawable(R.styleable.StickyListHeadersListView_android_listSelector));
}
mList.setScrollingCacheEnabled(a.getBoolean(R.styleable.StickyListHeadersListView_android_scrollingCache,
mList.isScrollingCacheEnabled()));
if (a.hasValue(R.styleable.StickyListHeadersListView_android_divider)) {
mDivider = a.getDrawable(R.styleable.StickyListHeadersListView_android_divider);
}
mDividerHeight = a.getDimensionPixelSize(R.styleable.StickyListHeadersListView_android_dividerHeight,
mDividerHeight);
// -- StickyListHeaders attributes --
mAreHeadersSticky = a.getBoolean(R.styleable.StickyListHeadersListView_hasStickyHeaders, true);
mIsDrawingListUnderStickyHeader = a.getBoolean(
R.styleable.StickyListHeadersListView_isDrawingListUnderStickyHeader,
true);
} finally {
a.recycle();
}
}
// attach some listeners to the wrapped list
mList.setLifeCycleListener(new WrapperViewListLifeCycleListener());
mList.setOnScrollListener(new WrapperListScrollListener());
addView(mList);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
measureHeader(mHeader);
}
private void ensureHeaderHasCorrectLayoutParams(View header) {
ViewGroup.LayoutParams lp = header.getLayoutParams();
if (lp == null) {
lp = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
} else if (lp.height == LayoutParams.MATCH_PARENT) {
lp.height = LayoutParams.WRAP_CONTENT;
}
header.setLayoutParams(lp);
}
private void measureHeader(View header) {
if (header != null) {
final int width = getMeasuredWidth() - mPaddingLeft - mPaddingRight;
final int parentWidthMeasureSpec = MeasureSpec.makeMeasureSpec(
width, MeasureSpec.EXACTLY);
final int parentHeightMeasureSpec = MeasureSpec.makeMeasureSpec(0,
MeasureSpec.UNSPECIFIED);
measureChild(header, parentWidthMeasureSpec,
parentHeightMeasureSpec);
}
}
@Override
protected void onLayout(boolean changed, int left, int top, int right,
int bottom) {
mList.layout(0, 0, mList.getMeasuredWidth(), getHeight());
if (mHeader != null) {
MarginLayoutParams lp = (MarginLayoutParams) mHeader
.getLayoutParams();
int headerTop = lp.topMargin
+ (mClippingToPadding ? mPaddingTop : 0);
// The left parameter must for some reason be set to 0.
// I think it should be set to mPaddingLeft but apparently not
mHeader.layout(mPaddingLeft, headerTop, mHeader.getMeasuredWidth()
+ mPaddingLeft, headerTop + mHeader.getMeasuredHeight());
}
}
@Override
protected void dispatchDraw(Canvas canvas) {
// Only draw the list here.
// The header should be drawn right after the lists children are drawn.
// This is done so that the header is above the list items
// but below the list decorators (scroll bars etc).
drawChild(canvas, mList, 0);
}
// Reset values tied the header. also remove header form layout
// This is called in response to the data set or the adapter changing
private void clearHeader() {
if (mHeader != null) {
removeView(mHeader);
mHeader = null;
mHeaderId = null;
mHeaderPosition = null;
mHeaderOffset = null;
// reset the top clipping length
mList.setTopClippingLength(0);
updateHeaderVisibilities();
}
}
private void updateOrClearHeader(int firstVisiblePosition) {
final int adapterCount = mAdapter == null ? 0 : mAdapter.getCount();
if (adapterCount == 0 || !mAreHeadersSticky) {
return;
}
final int headerViewCount = mList.getHeaderViewsCount();
final int realFirstVisibleItem = firstVisiblePosition - headerViewCount;
// It is not a mistake to call getFirstVisiblePosition() here.
// Most of the time getFixedFirstVisibleItem() should be called
// but that does not work great together with getChildAt()
final boolean doesListHaveChildren = mList.getChildCount() != 0;
final boolean isFirstViewBelowTop = doesListHaveChildren && mList
.getFirstVisiblePosition() == 0
&& mList.getChildAt(0).getTop() > (mClippingToPadding ? mPaddingTop : 0);
final boolean isFirstVisibleItemOutsideAdapterRange = realFirstVisibleItem > adapterCount - 1
|| realFirstVisibleItem < 0;
if (!doesListHaveChildren || isFirstVisibleItemOutsideAdapterRange
|| isFirstViewBelowTop) {
clearHeader();
return;
}
updateHeader(realFirstVisibleItem);
}
private void updateHeader(int firstVisiblePosition) {
// check if there is a new header should be sticky
if (mHeaderPosition == null || mHeaderPosition != firstVisiblePosition) {
mHeaderPosition = firstVisiblePosition;
final long headerId = mAdapter.getHeaderId(firstVisiblePosition);
if (mHeaderId == null || mHeaderId != headerId) {
mHeaderId = headerId;
final View header = mAdapter.getHeaderView(mHeaderPosition,
mHeader, this);
if (mHeader != header) {
if (header == null) {
throw new NullPointerException("header may not be null");
}
swapHeader(header);
}
ensureHeaderHasCorrectLayoutParams(mHeader);
measureHeader(mHeader);
// Reset mHeaderOffset to null ensuring
// that it will be set on the header and
// not skipped for performance reasons.
mHeaderOffset = null;
}
}
int headerOffset = 0;
// Calculate new header offset
// Skip looking at the first view. it never matters because it always
// results in a headerOffset = 0
int headerBottom = mHeader.getMeasuredHeight()
+ (mClippingToPadding ? mPaddingTop : 0);
for (int i = 0; i < mList.getChildCount(); i++) {
final View child = mList.getChildAt(i);
final boolean doesChildHaveHeader = child instanceof WrapperView
&& ((WrapperView) child).hasHeader();
final boolean isChildFooter = mList.containsFooterView(child);
if (child.getTop() >= (mClippingToPadding ? mPaddingTop : 0)
&& (doesChildHaveHeader || isChildFooter)) {
headerOffset = Math.min(child.getTop() - headerBottom, 0);
break;
}
}
setHeaderOffet(headerOffset);
if (!mIsDrawingListUnderStickyHeader) {
mList.setTopClippingLength(mHeader.getMeasuredHeight()
+ mHeaderOffset);
}
updateHeaderVisibilities();
}
private void swapHeader(View newHeader) {
if (mHeader != null) {
removeView(mHeader);
}
mHeader = newHeader;
addView(mHeader);
mHeader.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (mOnHeaderClickListener != null) {
mOnHeaderClickListener.onHeaderClick(
StickyListHeadersListView.this, mHeader,
mHeaderPosition, mHeaderId, true);
}
}
});
}
// hides the headers in the list under the sticky header.
// Makes sure the other ones are showing
private void updateHeaderVisibilities() {
int top;
if (mHeader != null) {
top = mHeader.getMeasuredHeight()
+ (mHeaderOffset != null ? mHeaderOffset : 0);
} else {
top = mClippingToPadding ? mPaddingTop : 0;
}
int childCount = mList.getChildCount();
for (int i = 0; i < childCount; i++) {
// ensure child is a wrapper view
View child = mList.getChildAt(i);
if (!(child instanceof WrapperView)) {
continue;
}
// ensure wrapper view child has a header
WrapperView wrapperViewChild = (WrapperView) child;
if (!wrapperViewChild.hasHeader()) {
continue;
}
// update header views visibility
View childHeader = wrapperViewChild.mHeader;
if (wrapperViewChild.getTop() < top) {
if (childHeader.getVisibility() != View.INVISIBLE) {
childHeader.setVisibility(View.INVISIBLE);
}
} else {
if (childHeader.getVisibility() != View.VISIBLE) {
childHeader.setVisibility(View.VISIBLE);
}
}
}
}
// Wrapper around setting the header offset in different ways depending on
// the API version
@SuppressLint("NewApi")
private void setHeaderOffet(int offset) {
if (mHeaderOffset == null || mHeaderOffset != offset) {
mHeaderOffset = offset;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
mHeader.setTranslationY(mHeaderOffset);
} else {
MarginLayoutParams params = (MarginLayoutParams) mHeader
.getLayoutParams();
params.topMargin = mHeaderOffset;
mHeader.setLayoutParams(params);
}
if (mOnStickyHeaderOffsetChangedListener != null) {
mOnStickyHeaderOffsetChangedListener
.onStickyHeaderOffsetChanged(this, mHeader, -mHeaderOffset);
}
}
}
private class AdapterWrapperDataSetObserver extends DataSetObserver {
@Override
public void onChanged() {
clearHeader();
}
@Override
public void onInvalidated() {
clearHeader();
}
}
private class WrapperListScrollListener implements OnScrollListener {
@Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
if (mOnScrollListenerDelegate != null) {
mOnScrollListenerDelegate.onScroll(view, firstVisibleItem,
visibleItemCount, totalItemCount);
}
updateOrClearHeader(mList.getFixedFirstVisibleItem());
}
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
if (mOnScrollListenerDelegate != null) {
mOnScrollListenerDelegate.onScrollStateChanged(view,
scrollState);
}
}
}
private class WrapperViewListLifeCycleListener implements LifeCycleListener {
@Override
public void onDispatchDrawOccurred(Canvas canvas) {
// onScroll is not called often at all before froyo
// therefor we need to update the header here as well.
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.FROYO) {
updateOrClearHeader(mList.getFixedFirstVisibleItem());
}
if (mHeader != null) {
if (mClippingToPadding) {
canvas.save();
canvas.clipRect(0, mPaddingTop, getRight(), getBottom());
drawChild(canvas, mHeader, 0);
canvas.restore();
} else {
drawChild(canvas, mHeader, 0);
}
}
}
}
private class AdapterWrapperHeaderClickHandler implements
AdapterWrapper.OnHeaderClickListener {
@Override
public void onHeaderClick(View header, int itemPosition, long headerId) {
mOnHeaderClickListener.onHeaderClick(
StickyListHeadersListView.this, header, itemPosition,
headerId, false);
}
}
private boolean isStartOfSection(int position) {
return position == 0
|| mAdapter.getHeaderId(position) != mAdapter
.getHeaderId(position - 1);
}
private int getHeaderOverlap(int position) {
boolean isStartOfSection = isStartOfSection(position);
if (!isStartOfSection) {
View header = mAdapter.getHeaderView(position, null, mList);
if (header == null) {
throw new NullPointerException("header may not be null");
}
ensureHeaderHasCorrectLayoutParams(header);
measureHeader(header);
return header.getMeasuredHeight();
}
return 0;
}
/* ---------- StickyListHeaders specific API ---------- */
public void setAreHeadersSticky(boolean areHeadersSticky) {
mAreHeadersSticky = areHeadersSticky;
if (!areHeadersSticky) {
clearHeader();
} else {
updateOrClearHeader(mList.getFixedFirstVisibleItem());
}
// invalidating the list will trigger dispatchDraw()
mList.invalidate();
}
public boolean areHeadersSticky() {
return mAreHeadersSticky;
}
/**
* Use areHeadersSticky() method instead
*/
@Deprecated
public boolean getAreHeadersSticky() {
return areHeadersSticky();
}
public void setDrawingListUnderStickyHeader(
boolean drawingListUnderStickyHeader) {
mIsDrawingListUnderStickyHeader = drawingListUnderStickyHeader;
// reset the top clipping length
mList.setTopClippingLength(0);
}
public boolean isDrawingListUnderStickyHeader() {
return mIsDrawingListUnderStickyHeader;
}
public void setOnHeaderClickListener(OnHeaderClickListener listener) {
mOnHeaderClickListener = listener;
if (mAdapter != null) {
if (mOnHeaderClickListener != null) {
mAdapter.setOnHeaderClickListener(new AdapterWrapperHeaderClickHandler());
} else {
mAdapter.setOnHeaderClickListener(null);
}
}
}
public void setOnStickyHeaderOffsetChangedListener(OnStickyHeaderOffsetChangedListener listener) {
mOnStickyHeaderOffsetChangedListener = listener;
}
public View getListChildAt(int index) {
return mList.getChildAt(index);
}
public int getListChildCount() {
return mList.getChildCount();
}
/**
* Use the method with extreme caution!! Changing any values on the
* underlying ListView might break everything.
*
* @return the ListView backing this view.
*/
public ListView getWrappedList() {
return mList;
}
/* ---------- ListView delegate methods ---------- */
public void setAdapter(StickyListHeadersAdapter adapter) {
if (adapter == null) {
mList.setAdapter(null);
clearHeader();
return;
}
if (mAdapter != null) {
mAdapter.unregisterDataSetObserver(mDataSetObserver);
}
if (adapter instanceof SectionIndexer) {
mAdapter = new SectionIndexerAdapterWrapper(getContext(), adapter);
} else {
mAdapter = new AdapterWrapper(getContext(), adapter);
}
mDataSetObserver = new AdapterWrapperDataSetObserver();
mAdapter.registerDataSetObserver(mDataSetObserver);
if (mOnHeaderClickListener != null) {
mAdapter.setOnHeaderClickListener(new AdapterWrapperHeaderClickHandler());
} else {
mAdapter.setOnHeaderClickListener(null);
}
mAdapter.setDivider(mDivider, mDividerHeight);
mList.setAdapter(mAdapter);
clearHeader();
}
public StickyListHeadersAdapter getAdapter() {
return mAdapter == null ? null : mAdapter.mDelegate;
}
public void setDivider(Drawable divider) {
mDivider = divider;
if (mAdapter != null) {
mAdapter.setDivider(mDivider, mDividerHeight);
}
}
public void setDividerHeight(int dividerHeight) {
mDividerHeight = dividerHeight;
if (mAdapter != null) {
mAdapter.setDivider(mDivider, mDividerHeight);
}
}
public Drawable getDivider() {
return mDivider;
}
public int getDividerHeight() {
return mDividerHeight;
}
public void setOnScrollListener(OnScrollListener onScrollListener) {
mOnScrollListenerDelegate = onScrollListener;
}
public void setOnItemClickListener(OnItemClickListener listener) {
mList.setOnItemClickListener(listener);
}
public void setOnItemLongClickListener(OnItemLongClickListener listener) {
mList.setOnItemLongClickListener(listener);
}
public void addHeaderView(View v, Object data, boolean isSelectable) {
mList.addHeaderView(v, data, isSelectable);
}
public void addHeaderView(View v) {
mList.addHeaderView(v);
}
public void removeHeaderView(View v) {
mList.removeHeaderView(v);
}
public int getHeaderViewsCount() {
return mList.getHeaderViewsCount();
}
public void addFooterView(View v) {
mList.addFooterView(v);
}
public void removeFooterView(View v) {
mList.removeFooterView(v);
}
public int getFooterViewsCount() {
return mList.getFooterViewsCount();
}
public void setEmptyView(View v) {
mList.setEmptyView(v);
}
public View getEmptyView() {
return mList.getEmptyView();
}
@Override
public void setVerticalScrollBarEnabled(boolean verticalScrollBarEnabled) {
mList.setVerticalScrollBarEnabled(verticalScrollBarEnabled);
}
@Override
public void setHorizontalScrollBarEnabled(boolean horizontalScrollBarEnabled) {
mList.setHorizontalScrollBarEnabled(horizontalScrollBarEnabled);
}
@TargetApi(Build.VERSION_CODES.FROYO)
public void smoothScrollBy(int distance, int duration) {
requireSdkVersion(Build.VERSION_CODES.FROYO);
mList.smoothScrollBy(distance, duration);
}
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public void smoothScrollByOffset(int offset) {
requireSdkVersion(Build.VERSION_CODES.HONEYCOMB);
mList.smoothScrollByOffset(offset);
}
@SuppressLint("NewApi")
@TargetApi(Build.VERSION_CODES.FROYO)
public void smoothScrollToPosition(int position) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
mList.smoothScrollToPosition(position);
} else {
int offset = mAdapter == null ? 0 : getHeaderOverlap(position);
offset -= mClippingToPadding ? 0 : mPaddingTop;
mList.smoothScrollToPositionFromTop(position, offset);
}
}
@TargetApi(Build.VERSION_CODES.FROYO)
public void smoothScrollToPosition(int position, int boundPosition) {
requireSdkVersion(Build.VERSION_CODES.FROYO);
mList.smoothScrollToPosition(position, boundPosition);
}
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public void smoothScrollToPositionFromTop(int position, int offset) {
requireSdkVersion(Build.VERSION_CODES.HONEYCOMB);
offset += mAdapter == null ? 0 : getHeaderOverlap(position);
offset -= mClippingToPadding ? 0 : mPaddingTop;
mList.smoothScrollToPositionFromTop(position, offset);
}
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public void smoothScrollToPositionFromTop(int position, int offset,
int duration) {
requireSdkVersion(Build.VERSION_CODES.HONEYCOMB);
offset += mAdapter == null ? 0 : getHeaderOverlap(position);
offset -= mClippingToPadding ? 0 : mPaddingTop;
mList.smoothScrollToPositionFromTop(position, offset, duration);
}
public void setSelection(int position) {
setSelectionFromTop(position, 0);
}
public void setSelectionAfterHeaderView() {
mList.setSelectionAfterHeaderView();
}
public void setSelectionFromTop(int position, int y) {
y += mAdapter == null ? 0 : getHeaderOverlap(position);
y -= mClippingToPadding ? 0 : mPaddingTop;
mList.setSelectionFromTop(position, y);
}
public void setSelector(Drawable sel) {
mList.setSelector(sel);
}
public void setSelector(int resID) {
mList.setSelector(resID);
}
public int getFirstVisiblePosition() {
return mList.getFirstVisiblePosition();
}
public int getLastVisiblePosition() {
return mList.getLastVisiblePosition();
}
public void setChoiceMode(int choiceMode) {
mList.setChoiceMode(choiceMode);
}
public void setItemChecked(int position, boolean value) {
mList.setItemChecked(position, value);
}
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public int getCheckedItemCount() {
requireSdkVersion(Build.VERSION_CODES.HONEYCOMB);
return mList.getCheckedItemCount();
}
@TargetApi(Build.VERSION_CODES.FROYO)
public long[] getCheckedItemIds() {
requireSdkVersion(Build.VERSION_CODES.FROYO);
return mList.getCheckedItemIds();
}
public int getCheckedItemPosition() {
return mList.getCheckedItemPosition();
}
public SparseBooleanArray getCheckedItemPositions() {
return mList.getCheckedItemPositions();
}
public int getCount() {
return mList.getCount();
}
public Object getItemAtPosition(int position) {
return mList.getItemAtPosition(position);
}
public long getItemIdAtPosition(int position) {
return mList.getItemIdAtPosition(position);
}
@Override
public void setOnCreateContextMenuListener(OnCreateContextMenuListener l) {
mList.setOnCreateContextMenuListener(l);
}
@Override
public boolean showContextMenu() {
return mList.showContextMenu();
}
public void invalidateViews() {
mList.invalidateViews();
}
@Override
public void setClipToPadding(boolean clipToPadding) {
if (mList != null) {
mList.setClipToPadding(clipToPadding);
}
mClippingToPadding = clipToPadding;
}
@Override
public void setPadding(int left, int top, int right, int bottom) {
mPaddingLeft = left;
mPaddingTop = top;
mPaddingRight = right;
mPaddingBottom = bottom;
if (mList != null) {
mList.setPadding(left, top, right, bottom);
}
super.setPadding(0, 0, 0, 0);
requestLayout();
}
/*
* Overrides an @hide method in View
*/
protected void recomputePadding() {
setPadding(mPaddingLeft, mPaddingTop, mPaddingRight, mPaddingBottom);
}
@Override
public int getPaddingLeft() {
return mPaddingLeft;
}
@Override
public int getPaddingTop() {
return mPaddingTop;
}
@Override
public int getPaddingRight() {
return mPaddingRight;
}
@Override
public int getPaddingBottom() {
return mPaddingBottom;
}
public void setFastScrollEnabled(boolean fastScrollEnabled) {
mList.setFastScrollEnabled(fastScrollEnabled);
}
/**
* @throws ApiLevelTooLowException on pre-Honeycomb device.
* @see android.widget.AbsListView#setFastScrollAlwaysVisible(boolean)
*/
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public void setFastScrollAlwaysVisible(boolean alwaysVisible) {
requireSdkVersion(Build.VERSION_CODES.HONEYCOMB);
mList.setFastScrollAlwaysVisible(alwaysVisible);
}
/**
* @return true if the fast scroller will always show. False on pre-Honeycomb devices.
* @see android.widget.AbsListView#isFastScrollAlwaysVisible()
*/
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public boolean isFastScrollAlwaysVisible() {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
return false;
}
return mList.isFastScrollAlwaysVisible();
}
public void setScrollBarStyle(int style) {
mList.setScrollBarStyle(style);
}
public int getScrollBarStyle() {
return mList.getScrollBarStyle();
}
private void requireSdkVersion(int versionCode) {
if (Build.VERSION.SDK_INT < versionCode) {
throw new ApiLevelTooLowException(versionCode);
}
}
public int getPositionForView(View view) {
return mList.getPositionForView(view);
}
}

150
libraries/StickyListHeaders/library/src/se/emilsjolander/stickylistheaders/WrapperView.java Normal file
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package se.emilsjolander.stickylistheaders;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewParent;
/**
*
* the view that wrapps a divider header and a normal list item. The listview sees this as 1 item
*
* @author Emil Sjölander
*/
public class WrapperView extends ViewGroup {
View mItem;
Drawable mDivider;
int mDividerHeight;
View mHeader;
int mItemTop;
WrapperView(Context c) {
super(c);
}
public boolean hasHeader() {
return mHeader != null;
}
public View getItem() {
return mItem;
}
public View getHeader() {
return mHeader;
}
void update(View item, View header, Drawable divider, int dividerHeight) {
//every wrapperview must have a list item
if (item == null) {
throw new NullPointerException("List view item must not be null.");
}
//only remove the current item if it is not the same as the new item. this can happen if wrapping a recycled view
if (this.mItem != item) {
removeView(this.mItem);
this.mItem = item;
final ViewParent parent = item.getParent();
if(parent != null && parent != this) {
if(parent instanceof ViewGroup) {
((ViewGroup) parent).removeView(item);
}
}
addView(item);
}
//same logik as above but for the header
if (this.mHeader != header) {
if (this.mHeader != null) {
removeView(this.mHeader);
}
this.mHeader = header;
if (header != null) {
addView(header);
}
}
if (this.mDivider != divider) {
this.mDivider = divider;
this.mDividerHeight = dividerHeight;
invalidate();
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int measuredWidth = MeasureSpec.getSize(widthMeasureSpec);
int childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(measuredWidth,
MeasureSpec.EXACTLY);
int measuredHeight = 0;
//measure header or divider. when there is a header visible it acts as the divider
if (mHeader != null) {
ViewGroup.LayoutParams params = mHeader.getLayoutParams();
if (params != null && params.height > 0) {
mHeader.measure(childWidthMeasureSpec,
MeasureSpec.makeMeasureSpec(params.height, MeasureSpec.EXACTLY));
} else {
mHeader.measure(childWidthMeasureSpec,
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
}
measuredHeight += mHeader.getMeasuredHeight();
} else if (mDivider != null) {
measuredHeight += mDividerHeight;
}
//measure item
ViewGroup.LayoutParams params = mItem.getLayoutParams();
if (params != null && params.height > 0) {
mItem.measure(childWidthMeasureSpec,
MeasureSpec.makeMeasureSpec(params.height, MeasureSpec.EXACTLY));
} else {
mItem.measure(childWidthMeasureSpec,
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
}
measuredHeight += mItem.getMeasuredHeight();
setMeasuredDimension(measuredWidth, measuredHeight);
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
l = 0;
t = 0;
r = getWidth();
b = getHeight();
if (mHeader != null) {
int headerHeight = mHeader.getMeasuredHeight();
mHeader.layout(l, t, r, headerHeight);
mItemTop = headerHeight;
mItem.layout(l, headerHeight, r, b);
} else if (mDivider != null) {
mDivider.setBounds(l, t, r, mDividerHeight);
mItemTop = mDividerHeight;
mItem.layout(l, mDividerHeight, r, b);
} else {
mItemTop = t;
mItem.layout(l, t, r, b);
}
}
@Override
protected void dispatchDraw(Canvas canvas) {
super.dispatchDraw(canvas);
if (mHeader == null && mDivider != null) {
// Drawable.setBounds() does not seem to work pre-honeycomb. So have
// to do this instead
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
canvas.clipRect(0, 0, getWidth(), mDividerHeight);
}
mDivider.draw(canvas);
}
}
}

175
libraries/StickyListHeaders/library/src/se/emilsjolander/stickylistheaders/WrapperViewList.java Normal file
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package se.emilsjolander.stickylistheaders;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.os.Build;
import android.view.View;
import android.widget.AbsListView;
import android.widget.ListView;
class WrapperViewList extends ListView {
interface LifeCycleListener {
void onDispatchDrawOccurred(Canvas canvas);
}
private LifeCycleListener mLifeCycleListener;
private List<View> mFooterViews;
private int mTopClippingLength;
private Rect mSelectorRect = new Rect();// for if reflection fails
private Field mSelectorPositionField;
private boolean mClippingToPadding = true;
public WrapperViewList(Context context) {
super(context);
// Use reflection to be able to change the size/position of the list
// selector so it does not come under/over the header
try {
Field selectorRectField = AbsListView.class.getDeclaredField("mSelectorRect");
selectorRectField.setAccessible(true);
mSelectorRect = (Rect) selectorRectField.get(this);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
mSelectorPositionField = AbsListView.class.getDeclaredField("mSelectorPosition");
mSelectorPositionField.setAccessible(true);
}
} catch (NoSuchFieldException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
@Override
public boolean performItemClick(View view, int position, long id) {
if (view instanceof WrapperView) {
view = ((WrapperView) view).mItem;
}
return super.performItemClick(view, position, id);
}
private void positionSelectorRect() {
if (!mSelectorRect.isEmpty()) {
int selectorPosition = getSelectorPosition();
if (selectorPosition >= 0) {
int firstVisibleItem = getFixedFirstVisibleItem();
View v = getChildAt(selectorPosition - firstVisibleItem);
if (v instanceof WrapperView) {
WrapperView wrapper = ((WrapperView) v);
mSelectorRect.top = wrapper.getTop() + wrapper.mItemTop;
}
}
}
}
private int getSelectorPosition() {
if (mSelectorPositionField == null) { // not all supported andorid
// version have this variable
for (int i = 0; i < getChildCount(); i++) {
if (getChildAt(i).getBottom() == mSelectorRect.bottom) {
return i + getFixedFirstVisibleItem();
}
}
} else {
try {
return mSelectorPositionField.getInt(this);
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
return -1;
}
@Override
protected void dispatchDraw(Canvas canvas) {
positionSelectorRect();
if (mTopClippingLength != 0) {
canvas.save();
Rect clipping = canvas.getClipBounds();
clipping.top = mTopClippingLength;
canvas.clipRect(clipping);
super.dispatchDraw(canvas);
canvas.restore();
} else {
super.dispatchDraw(canvas);
}
mLifeCycleListener.onDispatchDrawOccurred(canvas);
}
void setLifeCycleListener(LifeCycleListener lifeCycleListener) {
mLifeCycleListener = lifeCycleListener;
}
@Override
public void addFooterView(View v) {
super.addFooterView(v);
if (mFooterViews == null) {
mFooterViews = new ArrayList<View>();
}
mFooterViews.add(v);
}
@Override
public boolean removeFooterView(View v) {
if (super.removeFooterView(v)) {
mFooterViews.remove(v);
return true;
}
return false;
}
boolean containsFooterView(View v) {
if (mFooterViews == null) {
return false;
}
return mFooterViews.contains(v);
}
void setTopClippingLength(int topClipping) {
mTopClippingLength = topClipping;
}
int getFixedFirstVisibleItem() {
int firstVisibleItem = getFirstVisiblePosition();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
return firstVisibleItem;
}
// first getFirstVisiblePosition() reports items
// outside the view sometimes on old versions of android
for (int i = 0; i < getChildCount(); i++) {
if (getChildAt(i).getBottom() >= 0) {
firstVisibleItem += i;
break;
}
}
// work around to fix bug with firstVisibleItem being to high
// because list view does not take clipToPadding=false into account
// on old versions of android
if (!mClippingToPadding && getPaddingTop() > 0 && firstVisibleItem > 0) {
if (getChildAt(0).getTop() > 0) {
firstVisibleItem -= 1;
}
}
return firstVisibleItem;
}
@Override
public void setClipToPadding(boolean clipToPadding) {
mClippingToPadding = clipToPadding;
super.setClipToPadding(clipToPadding);
}
}