Invoke NFC button

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java

@@ -88,6 +88,7 @@ public class ViewKeyActivity extends BaseActivity implements
     private ImageButton mActionEncryptText;
     private ImageButton mActionVerify;
     private ImageButton mActionEdit;
+    private ImageButton mActionNfc;
     private FloatingActionButton mFab;
     private AspectRatioImageView mPhoto;
     private ImageButton mQrCode;
@@ -123,6 +124,7 @@ public class ViewKeyActivity extends BaseActivity implements
         mActionEncryptText = (ImageButton) findViewById(R.id.view_key_action_encrypt_text);
         mActionVerify = (ImageButton) findViewById(R.id.view_key_action_verify);
         mActionEdit = (ImageButton) findViewById(R.id.view_key_action_edit);
+        mActionNfc = (ImageButton) findViewById(R.id.view_key_action_nfc);
         mFab = (FloatingActionButton) findViewById(R.id.fab);
         mPhoto = (AspectRatioImageView) findViewById(R.id.view_key_photo);
         mQrCode = (ImageButton) findViewById(R.id.view_key_qr_code);
@@ -187,6 +189,13 @@ public class ViewKeyActivity extends BaseActivity implements
             }
         });
 
+        mActionNfc.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                invokeNfcBeam();
+            }
+        });
+
 
         // Prepare the loaders. Either re-connect with an existing ones,
         // or start new ones.
@@ -270,6 +279,15 @@ public class ViewKeyActivity extends BaseActivity implements
         return super.onOptionsItemSelected(item);
     }
 
+    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
+    private void invokeNfcBeam() {
+        // Check for available NFC Adapter
+        mNfcAdapter = NfcAdapter.getDefaultAdapter(this);
+        if (mNfcAdapter != null) {
+            mNfcAdapter.invokeBeam(this);
+        }
+    }
+
     private void scanQrCode() {
         Intent scanQrCode = new Intent(this, QrCodeScanActivity.class);
         scanQrCode.setAction(QrCodeScanActivity.ACTION_SCAN_WITH_RESULT);
@@ -623,6 +641,7 @@ public class ViewKeyActivity extends BaseActivity implements
                         mActionEncryptText.setVisibility(View.GONE);
                         mActionVerify.setVisibility(View.GONE);
                         mActionEdit.setVisibility(View.GONE);
+                        mActionNfc.setVisibility(View.GONE);
                         mFab.setVisibility(View.GONE);
                         mQrCodeLayout.setVisibility(View.GONE);
                     } else if (isExpired) {
@@ -641,6 +660,7 @@ public class ViewKeyActivity extends BaseActivity implements
                         mActionEncryptFile.setVisibility(View.GONE);
                         mActionEncryptText.setVisibility(View.GONE);
                         mActionVerify.setVisibility(View.GONE);
+                        mActionNfc.setVisibility(View.GONE);
                         mFab.setVisibility(View.GONE);
                         mQrCodeLayout.setVisibility(View.GONE);
                     } else if (mIsSecret) {
@@ -675,6 +695,13 @@ public class ViewKeyActivity extends BaseActivity implements
                         mActionEncryptText.setVisibility(View.VISIBLE);
                         mActionVerify.setVisibility(View.GONE);
                         mActionEdit.setVisibility(View.VISIBLE);
+
+                        // invokeBeam is available from API 21
+                        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+                            mActionNfc.setVisibility(View.VISIBLE);
+                        } else {
+                            mActionNfc.setVisibility(View.GONE);
+                        }
                         mFab.setVisibility(View.VISIBLE);
                         mFab.setIconDrawable(getResources().getDrawable(R.drawable.ic_repeat_white_24dp));
                     } else {
@@ -682,6 +709,7 @@ public class ViewKeyActivity extends BaseActivity implements
                         mActionEncryptText.setVisibility(View.VISIBLE);
                         mActionEdit.setVisibility(View.GONE);
                         mQrCodeLayout.setVisibility(View.GONE);
+                        mActionNfc.setVisibility(View.GONE);
 
                         if (isVerified) {
                             mStatusText.setText(R.string.view_key_verified);

OpenKeychain/src/main/res/layout/import_keys_qr_code_fragment.xml

@@ -21,7 +21,7 @@
             android:layout_height="match_parent"
             android:text="@string/import_qr_code_button"
             android:layout_weight="1"
-            android:drawableRight="@drawable/ic_action_qr_code"
+            android:drawableRight="@drawable/ic_qrcode_white_24dp"
             android:drawablePadding="8dp"
             android:gravity="center_vertical" />
 
@@ -38,7 +38,7 @@
             android:layout_width="wrap_content"
             android:layout_height="match_parent"
             android:padding="8dp"
-            android:src="@drawable/ic_action_nfc"
+            android:src="@drawable/ic_nfc_white_24dp"
             android:layout_gravity="center_vertical"
             style="@style/SelectableItem" />
 

OpenKeychain/src/main/res/layout/view_key_activity.xml

@@ -116,6 +116,14 @@
                 style="?android:attr/borderlessButtonStyle"
                 android:src="@drawable/ic_mode_edit_white_24dp" />
 
+            <ImageButton
+                android:id="@+id/view_key_action_nfc"
+                android:layout_width="64dp"
+                android:layout_height="64dp"
+                android:visibility="invisible"
+                style="?android:attr/borderlessButtonStyle"
+                android:src="@drawable/ic_nfc_white_24dp" />
+
         </LinearLayout>
 
         <ImageView