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/*
* Copyright (C) 2013 DroidDriver committers
*
* 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.google.android.droiddriver.instrumentation;
import android.app.Activity;
import android.app.Instrumentation;
import android.graphics.Bitmap;
import android.os.SystemClock;
import android.view.View;
import com.google.android.droiddriver.base.AbstractDroidDriver;
import com.google.android.droiddriver.exceptions.TimeoutException;
import com.google.android.droiddriver.util.ActivityUtils;
import com.google.common.primitives.Longs;
/**
* Implementation of a UiDriver that is driven via instrumentation.
*/
public class InstrumentationDriver extends AbstractDroidDriver {
private final InstrumentationContext context;
public InstrumentationDriver(Instrumentation instrumentation) {
super(instrumentation);
this.context = new InstrumentationContext(instrumentation);
}
@Override
protected ViewElement getNewRootElement() {
return context.getUiElement(findRootView());
}
@Override
protected InstrumentationContext getContext() {
return context;
}
private View findRootView() {
Activity runningActivity = getRunningActivity();
View[] views = RootFinder.getRootViews();
if (views.length > 1) {
for (View view : views) {
if (view.hasWindowFocus()) {
return view;
}
}
}
return runningActivity.getWindow().getDecorView();
}
private Activity getRunningActivity() {
long timeoutMillis = getPoller().getTimeoutMillis();
long end = SystemClock.uptimeMillis() + timeoutMillis;
while (true) {
instrumentation.waitForIdleSync();
Activity runningActivity = ActivityUtils.getRunningActivity();
if (runningActivity != null) {
return runningActivity;
}
long remainingMillis = end - SystemClock.uptimeMillis();
if (remainingMillis < 0) {
throw new TimeoutException(String.format(
"Timed out after %d milliseconds waiting for foreground activity", timeoutMillis));
}
SystemClock.sleep(Longs.min(250, remainingMillis));
}
}
private static class ScreenshotRunnable implements Runnable {
private final View rootView;
private Bitmap screenshot;
private ScreenshotRunnable(View rootView) {
this.rootView = rootView;
}
@Override
public void run() {
rootView.destroyDrawingCache();
rootView.buildDrawingCache(false);
screenshot = Bitmap.createBitmap(rootView.getDrawingCache());
rootView.destroyDrawingCache();
}
}
@Override
protected Bitmap takeScreenshot() {
ScreenshotRunnable screenshotRunnable = new ScreenshotRunnable(findRootView());
instrumentation.runOnMainSync(screenshotRunnable);
return screenshotRunnable.screenshot;
}
}
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