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Diffstat (limited to 'src/com/android/camera/async/MainThread.java')
-rw-r--r-- | src/com/android/camera/async/MainThread.java | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/com/android/camera/async/MainThread.java b/src/com/android/camera/async/MainThread.java new file mode 100644 index 000000000..7fdb3ec9b --- /dev/null +++ b/src/com/android/camera/async/MainThread.java @@ -0,0 +1,47 @@ +/* + * Copyright (C) 2014 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.android.camera.async; + +import android.os.Handler; +import android.os.Looper; + +public class MainThread extends HandlerExecutor { + private MainThread(Handler handler) { + super(handler); + } + + public static MainThread create() { + return new MainThread(new Handler(Looper.getMainLooper())); + } + + /** + * Caches whether or not the current thread is the main thread. + */ + private static final ThreadLocal<Boolean> sIsMainThread = new ThreadLocal<Boolean>() { + @Override + protected Boolean initialValue() { + return Looper.getMainLooper().getThread() == Thread.currentThread(); + } + }; + + /** + * Returns true if the method is run on the main android thread. + */ + public static boolean isMainThread() { + return sIsMainThread.get(); + } +} |