7a3635e7f4
Test: Tested on local device Bug: 178765084 Change-Id: I3b8f36daa31b0a44e788fe4c84f94d48653ee037
59 lines
2.2 KiB
Java
59 lines
2.2 KiB
Java
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.testutils;
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import android.app.Activity;
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import androidx.test.platform.app.InstrumentationRegistry;
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import androidx.test.runner.lifecycle.ActivityLifecycleMonitorRegistry;
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import androidx.test.runner.lifecycle.Stage;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.function.Supplier;
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public class UiUtils {
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public static void waitUntilCondition(long timeoutInMillis, Supplier<Boolean> condition) {
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long start = System.nanoTime();
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while (System.nanoTime() - start < (timeoutInMillis * 1000000)) {
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try {
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//Eat NPE from condition because there's a concurrency issue that when calling
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//findViewById when the view hierarchy is still rendering, it sometimes encounter
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//null views that may exist few milliseconds before, and causes a NPE.
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if (condition.get()) {
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return;
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}
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} catch (NullPointerException e) {
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e.printStackTrace();
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}
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}
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}
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public static boolean waitForActivitiesInStage(long timeoutInMillis, Stage stage) {
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final Collection<Activity> activities = new ArrayList<>();
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waitUntilCondition(Constants.ACTIVITY_LAUNCH_WAIT_TIMEOUT, () -> {
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InstrumentationRegistry.getInstrumentation().runOnMainSync(() -> activities.addAll(
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ActivityLifecycleMonitorRegistry.getInstance().getActivitiesInStage(
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Stage.RESUMED)));
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return activities.size() > 0;
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});
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return activities.size() > 0;
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}
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}
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