Merge "Add factory methods for async Handlers" into pi-dev (fa38f238) · Commits · e / os / android_frameworks_base

api/current.txt

+2 −0

Original line number	Diff line number	Diff line
		@@ -33179,6 +33179,8 @@ package android.os {
		ctor public Handler(android.os.Handler.Callback);
		ctor public Handler(android.os.Looper);
		ctor public Handler(android.os.Looper, android.os.Handler.Callback);
		method public static android.os.Handler createAsync(android.os.Looper);
		method public static android.os.Handler createAsync(android.os.Looper, android.os.Handler.Callback);
		method public void dispatchMessage(android.os.Message);
		method public final void dump(android.util.Printer, java.lang.String);
		method public final android.os.Looper getLooper();

core/java/android/os/Handler.java

+38 −1

Original line number	Diff line number	Diff line
		@@ -220,7 +220,7 @@ public class Handler {
		*
		* Asynchronous messages represent interrupts or events that do not require global ordering
		* with respect to synchronous messages. Asynchronous messages are not subject to
		* the synchronization barriers introduced by {@link MessageQueue#enqueueSyncBarrier(long)}.
		* the synchronization barriers introduced by conditions such as display vsync.
		*
		* @param looper The looper, must not be null.
		* @param callback The callback interface in which to handle messages, or null.
		@@ -236,6 +236,43 @@ public class Handler {
		mAsynchronous = async;
		}

		/**
		* Create a new Handler whose posted messages and runnables are not subject to
		* synchronization barriers such as display vsync.
		*
		* <p>Messages sent to an async handler are guaranteed to be ordered with respect to one another,
		* but not necessarily with respect to messages from other Handlers.</p>
		*
		* @see #createAsync(Looper, Callback) to create an async Handler with custom message handling.
		*
		* @param looper the Looper that the new Handler should be bound to
		* @return a new async Handler instance
		*/
		@NonNull
		public static Handler createAsync(@NonNull Looper looper) {
		if (looper == null) throw new NullPointerException("looper must not be null");
		return new Handler(looper, null, true);
		}

		/**
		* Create a new Handler whose posted messages and runnables are not subject to
		* synchronization barriers such as display vsync.
		*
		* <p>Messages sent to an async handler are guaranteed to be ordered with respect to one another,
		* but not necessarily with respect to messages from other Handlers.</p>
		*
		* @see #createAsync(Looper) to create an async Handler without custom message handling.
		*
		* @param looper the Looper that the new Handler should be bound to
		* @return a new async Handler instance
		*/
		@NonNull
		public static Handler createAsync(@NonNull Looper looper, @NonNull Callback callback) {
		if (looper == null) throw new NullPointerException("looper must not be null");
		if (callback == null) throw new NullPointerException("callback must not be null");
		return new Handler(looper, callback, true);
		}

		/** @hide */
		@NonNull
		public static Handler getMain() {