MainHandlerExecutor.java
/*
* Copyright 2018 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 androidx.media.widget;
import android.content.Context;
import android.os.Build;
import android.os.Handler;
import androidx.annotation.NonNull;
import java.util.concurrent.Executor;
import java.util.concurrent.RejectedExecutionException;
class MainHandlerExecutor implements Executor {
static Executor getExecutor(Context context) {
if (Build.VERSION.SDK_INT >= 28) {
return context.getMainExecutor();
}
return new MainHandlerExecutor(new Handler(context.getMainLooper()));
}
private final Handler mHandler;
MainHandlerExecutor(@NonNull Handler handler) {
mHandler = handler;
}
@Override
public void execute(Runnable command) {
if (!mHandler.post(command)) {
throw new RejectedExecutionException(mHandler + " is shutting down");
}
}
}