bd43fbe931
The app allows a user to explore the behaviour of different launch modes, task affinities and intent flags. It displays the current state of all tasks in the application and their corresponding flags. It allows the user to launch a set amount of activities on launch. This bring the user directly into a state where many options for exploration are available, rather than having to go through a complicated setup first. Access the activity field of RecentTaskInfo using reflection and mirror the ActivityInstanceInfo into our own value object. This breaks the compile time dependency on the ActivityInstanceInfo api and turns it into a runtime dependency. If the api is missing on the device we can still show the task structure and log an error with the missing activity instance info. Known bug: The enable suggestion button crashes the application. Test: Build and Run Change-Id: Id0274bae159c16aee6dccd805deb53851ffcf21d
99 lines
3.4 KiB
Java
99 lines
3.4 KiB
Java
/*
|
|
* Copyright (C) 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 com.example.android.intentplayground;
|
|
|
|
import android.app.ActivityManager.RecentTaskInfo;
|
|
import android.content.ComponentName;
|
|
import android.content.Intent;
|
|
import android.content.pm.ActivityInfo;
|
|
import android.util.Log;
|
|
import java.lang.reflect.InvocationTargetException;
|
|
import java.util.ArrayList;
|
|
import java.util.Arrays;
|
|
import java.util.List;
|
|
|
|
public final class TaskInfo {
|
|
|
|
private final static String TAG = "TaskInfo";
|
|
|
|
/**
|
|
* Access the ActivityInstanceInfo without depending on it at compile time.
|
|
*
|
|
* @param info the recent task mInfo to try and access the activity information of.
|
|
* @return The activity instance mInfo in our own mirrored value object or an empty list.
|
|
*/
|
|
public static List<ActivityInstanceInfoMirror> getActivities(RecentTaskInfo info) {
|
|
try {
|
|
List<Object> activities = (List<Object>) info.getClass().getField("activities").get(info);
|
|
List<ActivityInstanceInfoMirror> activityInfoMirrors = new ArrayList<>();
|
|
|
|
for (Object activityInstanceInfo : activities) {
|
|
Class<?> activityInfoClass = activityInstanceInfo.getClass();
|
|
System.out.println(Arrays.toString(activityInfoClass.getDeclaredFields()));
|
|
ActivityInfo activityInfo = (ActivityInfo) activityInfoClass.getMethod("getInfo")
|
|
.invoke(activityInstanceInfo);
|
|
Intent intent = (Intent) activityInfoClass.getMethod("getIntent")
|
|
.invoke(activityInstanceInfo);
|
|
ComponentName name = (ComponentName) activityInfoClass.getMethod("getName")
|
|
.invoke(activityInstanceInfo);
|
|
Integer hashId = (Integer) activityInfoClass.getMethod("getHashId")
|
|
.invoke(activityInstanceInfo);
|
|
|
|
activityInfoMirrors.add(new ActivityInstanceInfoMirror(activityInfo, intent, name, hashId));
|
|
}
|
|
|
|
return activityInfoMirrors;
|
|
} catch (IllegalAccessException | NoSuchFieldException | InvocationTargetException | NoSuchMethodException e) {
|
|
Log.e(TAG, "ActivityInstanceInfo not available on the current api level", e);
|
|
return new ArrayList<>();
|
|
}
|
|
}
|
|
|
|
//TODO (b/119894108): Replace the mirror with actual class once the framework-api is merged.
|
|
public static class ActivityInstanceInfoMirror {
|
|
|
|
private final ActivityInfo mInfo;
|
|
private final Intent mIntent;
|
|
private final ComponentName mComponentName;
|
|
private final int mHashId;
|
|
|
|
public ActivityInstanceInfoMirror(ActivityInfo info, Intent intent,
|
|
ComponentName componentName, int hashId) {
|
|
this.mInfo = info;
|
|
this.mIntent = intent;
|
|
this.mComponentName = componentName;
|
|
this.mHashId = hashId;
|
|
}
|
|
|
|
public ActivityInfo getInfo() {
|
|
return mInfo;
|
|
}
|
|
|
|
public Intent getIntent() {
|
|
return mIntent;
|
|
}
|
|
|
|
public ComponentName getName() {
|
|
return mComponentName;
|
|
}
|
|
|
|
public int getHashId() {
|
|
return mHashId;
|
|
}
|
|
}
|
|
}
|