Update Android port

* java/AndroidManifest.xml.in: Prevent the Emacs activity from
being overlayed by the emacsclient wrapper.
* java/org/gnu/emacs/EmacsOpenActivity.java (run): Likewise.
(onCreate): Set an appropriate theme on ICS and up.

* java/org/gnu/emacs/EmacsWindow.java (onTouchEvent): Handle
ACTION_CANCEL correctly.

3 files changed, 16 insertions, 3 deletions

diff --git a/java/AndroidManifest.xml.in b/java/AndroidManifest.xml.in
index 923c5a005d5..3c9e30713b6 100644
--- a/java/AndroidManifest.xml.in
+++ b/java/AndroidManifest.xml.in
@@ -72,7 +72,7 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>. -->
                android:extractNativeLibs="true">
 
     <activity android:name="org.gnu.emacs.EmacsActivity"
-              android:launchMode="singleTop"
+              android:launchMode="singleInstance"
               android:windowSoftInputMode="adjustResize"
               android:exported="true"
               android:configChanges="orientation|screenSize|screenLayout|keyboardHidden">
@@ -84,6 +84,8 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>. -->
     </activity>
 
     <activity android:name="org.gnu.emacs.EmacsOpenActivity"
+              android:taskAffinity="open.dialog"
+              android:excludeFromRecents="true"
               android:exported="true">
 
       <!-- Allow Emacs to open all kinds of files known to Android.  -->
@@ -137,6 +139,7 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>. -->
         <data android:mimeType="image/t38"/>
         <data android:mimeType="image/tiff"/>
         <data android:mimeType="image/tiff-fx"/>
+        <data android:mimeType="image/xpm"/>
         <data android:mimeType="text/*"/>
         <data android:mimeType="application/*xml"/>
         <data android:mimeType="application/atom+xml"/>
diff --git a/java/org/gnu/emacs/EmacsOpenActivity.java b/java/org/gnu/emacs/EmacsOpenActivity.java
index 268a9abd7b1..e987e067a73 100644
--- a/java/org/gnu/emacs/EmacsOpenActivity.java
+++ b/java/org/gnu/emacs/EmacsOpenActivity.java
@@ -184,7 +184,9 @@ public class EmacsOpenActivity extends Activity
 
           intent = new Intent (EmacsOpenActivity.this,
                                EmacsActivity.class);
-          intent.addFlags (Intent.FLAG_ACTIVITY_NEW_TASK);
+
+          /* This means only an existing frame will be displayed.  */
+          intent.addFlags (Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
           startActivity (intent);
 
           EmacsOpenActivity.this.finish ();
@@ -285,6 +287,11 @@ public class EmacsOpenActivity extends Activity
         return;
       }
 
+    /* Set an appropriate theme.  */
+
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH)
+      setTheme (android.R.style.Theme_DeviceDefault);
+
     /* Now see if the action specified is supported by Emacs.  */
 
     if (action.equals ("android.intent.action.VIEW")
diff --git a/java/org/gnu/emacs/EmacsWindow.java b/java/org/gnu/emacs/EmacsWindow.java
index 5c2b77b0125..e921b972c2c 100644
--- a/java/org/gnu/emacs/EmacsWindow.java
+++ b/java/org/gnu/emacs/EmacsWindow.java
@@ -794,7 +794,10 @@ public class EmacsWindow extends EmacsHandleObject
 
       case MotionEvent.ACTION_UP:
       case MotionEvent.ACTION_POINTER_UP:
-        /* Touch up event.  */
+      case MotionEvent.ACTION_CANCEL:
+        /* Touch up event.  Android documentation says ACTION_CANCEL
+           should be treated as more or less equivalent to ACTION_UP,
+           so that is what is done here.  */
         EmacsNative.sendTouchUp (this.handle, (int) event.getX (index),
                                  (int) event.getY (index),
                                  event.getEventTime (), pointerID);