New list with sticky list headers library
This commit is contained in:
Dominik Schürmann
@@ -0,0 +1,169 @@
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package se.emilsjolander.stickylistheaders;
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import android.annotation.TargetApi;
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import android.content.res.Configuration;
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import android.os.Build;
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import android.os.Bundle;
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import android.support.v4.app.ActionBarDrawerToggle;
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import android.support.v4.widget.DrawerLayout;
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import android.support.v7.app.ActionBarActivity;
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import android.view.MenuItem;
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import android.view.View;
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import android.widget.*;
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/**
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* @author Emil Sjölander
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*/
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public class TestActivity extends ActionBarActivity implements
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AdapterView.OnItemClickListener, StickyListHeadersListView.OnHeaderClickListener,
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StickyListHeadersListView.OnStickyHeaderOffsetChangedListener {
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private TestBaseAdapter mAdapter;
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private DrawerLayout mDrawerLayout;
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private ActionBarDrawerToggle mDrawerToggle;
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private boolean fadeHeader = true;
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private StickyListHeadersListView stickyList;
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private Button restoreButton;
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private Button updateButton;
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private Button clearButton;
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private CheckBox stickyCheckBox;
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private CheckBox fadeCheckBox;
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private CheckBox drawBehindCheckBox;
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private CheckBox fastScrollCheckBox;
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.main);
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mAdapter = new TestBaseAdapter(this);
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stickyList = (StickyListHeadersListView) findViewById(R.id.list);
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stickyList.setOnItemClickListener(this);
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stickyList.setOnHeaderClickListener(this);
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stickyList.setOnStickyHeaderOffsetChangedListener(this);
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// mStickyList.addHeaderView(inflater.inflate(R.layout.list_header, null));
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// mStickyList.addFooterView(inflater.inflate(R.layout.list_footer, null));
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stickyList.setEmptyView(findViewById(R.id.empty));
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stickyList.setDrawingListUnderStickyHeader(true);
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stickyList.setAreHeadersSticky(true);
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stickyList.setAdapter(mAdapter);
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mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
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mDrawerToggle = new ActionBarDrawerToggle(
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this, /* host Activity */
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mDrawerLayout, /* DrawerLayout object */
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R.drawable.ic_drawer, /* nav drawer icon to replace 'Up' caret */
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R.string.drawer_open, /* "open drawer" description */
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R.string.drawer_close /* "close drawer" description */
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);
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// Set the drawer toggle as the DrawerListener
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mDrawerLayout.setDrawerListener(mDrawerToggle);
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getSupportActionBar().setDisplayHomeAsUpEnabled(true);
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getSupportActionBar().setHomeButtonEnabled(true);
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restoreButton = (Button) findViewById(R.id.restore_button);
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restoreButton.setOnClickListener(buttonListener);
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updateButton = (Button) findViewById(R.id.update_button);
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updateButton.setOnClickListener(buttonListener);
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clearButton = (Button) findViewById(R.id.clear_button);
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clearButton.setOnClickListener(buttonListener);
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stickyCheckBox = (CheckBox) findViewById(R.id.sticky_checkBox);
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stickyCheckBox.setOnCheckedChangeListener(checkBoxListener);
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fadeCheckBox = (CheckBox) findViewById(R.id.fade_checkBox);
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fadeCheckBox.setOnCheckedChangeListener(checkBoxListener);
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drawBehindCheckBox = (CheckBox) findViewById(R.id.draw_behind_checkBox);
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drawBehindCheckBox.setOnCheckedChangeListener(checkBoxListener);
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fastScrollCheckBox = (CheckBox) findViewById(R.id.fast_scroll_checkBox);
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fastScrollCheckBox.setOnCheckedChangeListener(checkBoxListener);
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}
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@Override
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protected void onPostCreate(Bundle savedInstanceState) {
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super.onPostCreate(savedInstanceState);
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// Sync the toggle state after onRestoreInstanceState has occurred.
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mDrawerToggle.syncState();
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}
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@Override
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public void onConfigurationChanged(Configuration newConfig) {
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super.onConfigurationChanged(newConfig);
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mDrawerToggle.onConfigurationChanged(newConfig);
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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if (mDrawerToggle.onOptionsItemSelected(item)) {
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return true;
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}
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return super.onOptionsItemSelected(item);
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}
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CompoundButton.OnCheckedChangeListener checkBoxListener = new CompoundButton.OnCheckedChangeListener() {
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@Override
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public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
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switch (buttonView.getId()) {
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case R.id.sticky_checkBox:
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stickyList.setAreHeadersSticky(isChecked);
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break;
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case R.id.fade_checkBox:
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fadeHeader = isChecked;
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break;
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case R.id.draw_behind_checkBox:
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stickyList.setDrawingListUnderStickyHeader(isChecked);
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break;
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case R.id.fast_scroll_checkBox:
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stickyList.setFastScrollEnabled(isChecked);
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stickyList.setFastScrollAlwaysVisible(isChecked);
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break;
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}
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}
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};
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View.OnClickListener buttonListener = new View.OnClickListener() {
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@Override
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public void onClick(View view) {
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switch (view.getId()) {
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case R.id.restore_button:
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mAdapter.restore();
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break;
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case R.id.update_button:
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mAdapter.notifyDataSetChanged();
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break;
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case R.id.clear_button:
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mAdapter.clear();
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break;
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}
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}
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};
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@Override
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public void onItemClick(AdapterView<?> parent, View view, int position,
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long id) {
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Toast.makeText(this, "Item " + position + " clicked!",
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Toast.LENGTH_SHORT).show();
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}
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@Override
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public void onHeaderClick(StickyListHeadersListView l, View header,
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int itemPosition, long headerId, boolean currentlySticky) {
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Toast.makeText(this, "Header " + headerId + " currentlySticky ? " + currentlySticky,
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Toast.LENGTH_SHORT).show();
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}
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@Override
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@TargetApi(Build.VERSION_CODES.HONEYCOMB)
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public void onStickyHeaderOffsetChanged(StickyListHeadersListView l, View header, int offset) {
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if (fadeHeader && Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
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header.setAlpha(1 - (offset / (float) header.getMeasuredHeight()));
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}
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}
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}
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@@ -0,0 +1,169 @@
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package se.emilsjolander.stickylistheaders;
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import java.util.ArrayList;
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import android.content.Context;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.BaseAdapter;
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import android.widget.SectionIndexer;
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import android.widget.TextView;
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/**
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* @author Emil Sjölander
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*/
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public class TestBaseAdapter extends BaseAdapter implements
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StickyListHeadersAdapter, SectionIndexer {
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private final Context mContext;
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private String[] mCountries;
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private int[] mSectionIndices;
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private Character[] mSectionLetters;
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private LayoutInflater mInflater;
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public TestBaseAdapter(Context context) {
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mContext = context;
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mInflater = LayoutInflater.from(context);
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mCountries = context.getResources().getStringArray(R.array.countries);
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mSectionIndices = getSectionIndices();
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mSectionLetters = getSectionLetters();
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}
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private int[] getSectionIndices() {
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ArrayList<Integer> sectionIndices = new ArrayList<Integer>();
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char lastFirstChar = mCountries[0].charAt(0);
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sectionIndices.add(0);
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for (int i = 1; i < mCountries.length; i++) {
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if (mCountries[i].charAt(0) != lastFirstChar) {
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lastFirstChar = mCountries[i].charAt(0);
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sectionIndices.add(i);
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}
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}
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int[] sections = new int[sectionIndices.size()];
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for (int i = 0; i < sectionIndices.size(); i++) {
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sections[i] = sectionIndices.get(i);
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}
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return sections;
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}
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private Character[] getSectionLetters() {
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Character[] letters = new Character[mSectionIndices.length];
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for (int i = 0; i < mSectionIndices.length; i++) {
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letters[i] = mCountries[mSectionIndices[i]].charAt(0);
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}
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return letters;
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}
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@Override
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public int getCount() {
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return mCountries.length;
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}
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@Override
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public Object getItem(int position) {
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return mCountries[position];
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}
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@Override
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public long getItemId(int position) {
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return position;
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}
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@Override
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public View getView(int position, View convertView, ViewGroup parent) {
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ViewHolder holder;
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if (convertView == null) {
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holder = new ViewHolder();
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convertView = mInflater.inflate(R.layout.test_list_item_layout, parent, false);
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holder.text = (TextView) convertView.findViewById(R.id.text);
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convertView.setTag(holder);
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} else {
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holder = (ViewHolder) convertView.getTag();
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}
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holder.text.setText(mCountries[position]);
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return convertView;
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}
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@Override
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public View getHeaderView(int position, View convertView, ViewGroup parent) {
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HeaderViewHolder holder;
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if (convertView == null) {
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holder = new HeaderViewHolder();
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convertView = mInflater.inflate(R.layout.header, parent, false);
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holder.text = (TextView) convertView.findViewById(R.id.text1);
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convertView.setTag(holder);
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} else {
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holder = (HeaderViewHolder) convertView.getTag();
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}
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// set header text as first char in name
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CharSequence headerChar = mCountries[position].subSequence(0, 1);
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holder.text.setText(headerChar);
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return convertView;
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}
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/**
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* Remember that these have to be static, postion=1 should always return
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* the same Id that is.
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*/
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@Override
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public long getHeaderId(int position) {
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// return the first character of the country as ID because this is what
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// headers are based upon
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return mCountries[position].subSequence(0, 1).charAt(0);
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}
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@Override
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public int getPositionForSection(int section) {
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if (section >= mSectionIndices.length) {
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section = mSectionIndices.length - 1;
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} else if (section < 0) {
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section = 0;
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}
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return mSectionIndices[section];
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}
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@Override
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public int getSectionForPosition(int position) {
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for (int i = 0; i < mSectionIndices.length; i++) {
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if (position < mSectionIndices[i]) {
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return i - 1;
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}
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}
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return mSectionIndices.length - 1;
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}
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@Override
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public Object[] getSections() {
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return mSectionLetters;
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}
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public void clear() {
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mCountries = new String[0];
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mSectionIndices = new int[0];
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mSectionLetters = new Character[0];
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notifyDataSetChanged();
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}
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public void restore() {
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mCountries = mContext.getResources().getStringArray(R.array.countries);
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mSectionIndices = getSectionIndices();
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mSectionLetters = getSectionLetters();
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notifyDataSetChanged();
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}
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class HeaderViewHolder {
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TextView text;
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}
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class ViewHolder {
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TextView text;
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}
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}
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@@ -0,0 +1,50 @@
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package se.emilsjolander.stickylistheaders.views;
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import android.content.Context;
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import android.content.res.Resources;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.util.AttributeSet;
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import android.util.TypedValue;
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import android.widget.TextView;
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/**
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* @author Eric Frohnhoefer
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*/
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public class UnderlineTextView extends TextView {
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private final Paint mPaint = new Paint();
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private int mUnderlineHeight = 0;
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public UnderlineTextView(Context context) {
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this(context, null);
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}
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public UnderlineTextView(Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public UnderlineTextView(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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init(context, attrs);
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}
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private void init(Context context, AttributeSet attrs) {
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Resources r = getResources();
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mUnderlineHeight = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 2, r.getDisplayMetrics());
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}
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@Override
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public void setPadding(int left, int top, int right, int bottom) {
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super.setPadding(left, top, right, bottom + mUnderlineHeight);
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}
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@Override
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protected void onDraw(Canvas canvas) {
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super.onDraw(canvas);
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// Draw the underline the same color as the text
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mPaint.setColor(getTextColors().getDefaultColor());
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canvas.drawRect(0, getHeight() - mUnderlineHeight, getWidth(), getHeight(), mPaint);
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}
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}
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