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/*
* Copyright (C) 2012 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.contacts.util;
import android.view.View;
import android.view.ViewTreeObserver.OnDrawListener;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
/** Static methods that are useful for scheduling actions to occur at a later time. */
public class SchedulingUtils {
/** Runs a piece of code after the next layout run */
public static void doAfterLayout(final View view, final Runnable runnable) {
final OnGlobalLayoutListener listener = new OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
// Layout pass done, unregister for further events
view.getViewTreeObserver().removeOnGlobalLayoutListener(this);
runnable.run();
}
};
view.getViewTreeObserver().addOnGlobalLayoutListener(listener);
}
/** Runs a piece of code just before the next draw. */
public static void doAfterDraw(final View view, final Runnable runnable) {
final OnDrawListener listener = new OnDrawListener() {
@Override
public void onDraw() {
view.getViewTreeObserver().removeOnDrawListener(this);
runnable.run();
}
};
view.getViewTreeObserver().addOnDrawListener(listener);
}
}