Intent Playground sample application
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
This commit is contained in:
Liam Clark
@@ -0,0 +1,193 @@
|
||||
/*
|
||||
* 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.Activity;
|
||||
import android.app.FragmentTransaction;
|
||||
import android.content.Intent;
|
||||
import android.view.LayoutInflater;
|
||||
import android.view.View;
|
||||
import android.view.ViewGroup;
|
||||
import android.widget.BaseExpandableListAdapter;
|
||||
import android.widget.ImageButton;
|
||||
import android.widget.ImageView;
|
||||
import android.widget.TextView;
|
||||
|
||||
import java.util.Collections;
|
||||
import java.util.List;
|
||||
import java.util.Locale;
|
||||
|
||||
/**
|
||||
* A two-level adapter for tasks and the activities that they hold (represented by Node).
|
||||
*/
|
||||
class ExpandableAdapter extends BaseExpandableListAdapter {
|
||||
private Activity mActivity;
|
||||
private Node mTasks;
|
||||
|
||||
/**
|
||||
* Constructs a new ExpandableAdapter.
|
||||
* @param activity The activity that holds this adapter.
|
||||
* @param tasks The {@link Node} root of the task hierarchy.
|
||||
*/
|
||||
public ExpandableAdapter(Activity activity, Node tasks) {
|
||||
mActivity = activity;
|
||||
mTasks = tasks;
|
||||
}
|
||||
@Override
|
||||
public int getGroupCount() {
|
||||
return mTasks.mChildren.size();
|
||||
}
|
||||
|
||||
@Override
|
||||
public int getChildrenCount(int group) {
|
||||
return mTasks.mChildren.get(group).mChildren.size();
|
||||
}
|
||||
|
||||
@Override
|
||||
public Object getGroup(int group) {
|
||||
return mTasks.mChildren.get(group);
|
||||
}
|
||||
|
||||
@Override
|
||||
public Object getChild(int group, int child) {
|
||||
return mTasks.mChildren.get(group).mChildren.get(child);
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean hasStableIds() {
|
||||
return true;
|
||||
}
|
||||
|
||||
@Override
|
||||
public View getGroupView(int group, boolean isExpanded, View view, ViewGroup parent) {
|
||||
String numActivitiesText;
|
||||
TaskViewHolder holder;
|
||||
Node task = (Node) getGroup(group);
|
||||
int nActivities = getChildrenCount(group);
|
||||
switch (nActivities) {
|
||||
case 0: numActivitiesText = mActivity.getString(R.string.no_activities_text);
|
||||
break;
|
||||
case 1: numActivitiesText = mActivity.getString(R.string.one_activity_text);
|
||||
break;
|
||||
default: numActivitiesText = String.format(Locale.ENGLISH,
|
||||
mActivity.getString(R.string.plural_activities_text), nActivities);
|
||||
}
|
||||
if (view == null) {
|
||||
LayoutInflater inflater = LayoutInflater.from(this.mActivity);
|
||||
view = inflater.inflate(R.layout.task_node,parent, false);
|
||||
holder = new TaskViewHolder(view);
|
||||
view.setTag(holder);
|
||||
} else {
|
||||
holder = (TaskViewHolder) view.getTag();
|
||||
}
|
||||
if (isExpanded) {
|
||||
holder.indicatorImageView.setImageResource(R.drawable.expand_less_mtrl);
|
||||
} else {
|
||||
holder.indicatorImageView.setImageResource(R.drawable.expand_more_mtrl);
|
||||
}
|
||||
holder.taskIdTextView.setText(task.mTaskId == Node.NEW_TASK_ID ?
|
||||
mActivity.getString(R.string.new_task) : String.valueOf(task.mTaskId));
|
||||
holder.taskIdTextView.setTextColor(mActivity
|
||||
.getResources().getColor(ColorManager.getColorForTask(task.mTaskId),
|
||||
null /* theme */));
|
||||
holder.numActivitiesTextView.setText(numActivitiesText);
|
||||
return view;
|
||||
}
|
||||
|
||||
@Override
|
||||
public View getChildView(int group, int child, boolean lastChild, View view, ViewGroup parent) {
|
||||
Node activity = (Node) getChild(group, child);
|
||||
ActivityViewHolder holder;
|
||||
if (view == null) {
|
||||
LayoutInflater inflater = LayoutInflater.from(mActivity);
|
||||
view = inflater.inflate(R.layout.activity_node, parent, false /* attachToRoot */);
|
||||
holder = new ActivityViewHolder(view);
|
||||
view.setTag(holder);
|
||||
} else {
|
||||
holder = (ActivityViewHolder) view.getTag();
|
||||
}
|
||||
holder.activityNameTextView.setText(activity.mName.getShortClassName());
|
||||
holder.activityNumTextView.setText(String.format(Locale.ENGLISH, "%d",
|
||||
getChildrenCount(group) - child));
|
||||
int color = mActivity.getResources()
|
||||
.getColor(ColorManager.getColorForActivity(activity.mName), null /* theme */);
|
||||
holder.labelImageView.setColorFilter(color);
|
||||
holder.intentButtonView.setColorFilter(color);
|
||||
holder.intentButtonView.setOnClickListener(clickedView -> {
|
||||
Intent intent = ((Node) getChild(group, child)).getIntent();
|
||||
List<String> flags;
|
||||
if (intent != null) {
|
||||
flags = FlagUtils.discoverFlags(intent);
|
||||
if (flags.size() == 0) {
|
||||
flags.add("None");
|
||||
}
|
||||
} else {
|
||||
flags = Collections.singletonList("None");
|
||||
}
|
||||
showDialogWithFlags(activity.mName.getShortClassName(), flags);
|
||||
});
|
||||
return view;
|
||||
}
|
||||
|
||||
/**
|
||||
* Shows a dialog with a list.
|
||||
* @param shortClassName The activity name and title of the dialog.
|
||||
* @param flags The flags to list.
|
||||
*/
|
||||
private void showDialogWithFlags(String shortClassName, List<String> flags) {
|
||||
FragmentTransaction transaction = mActivity.getFragmentManager().beginTransaction();
|
||||
IntentDialogFragment.newInstance(shortClassName, flags).show(transaction, "intentDialog");
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean isChildSelectable(int i, int i1) {
|
||||
return true;
|
||||
}
|
||||
|
||||
@Override
|
||||
public long getGroupId(int group) {
|
||||
return mTasks.mChildren.get(group).mTaskId;
|
||||
}
|
||||
|
||||
@Override
|
||||
public long getChildId(int group, int child) {
|
||||
return ((Node) getChild(group, child)).mName.hashCode();
|
||||
}
|
||||
|
||||
private static class TaskViewHolder {
|
||||
TextView taskIdTextView, numActivitiesTextView;
|
||||
ImageView indicatorImageView;
|
||||
|
||||
TaskViewHolder(View view) {
|
||||
indicatorImageView = view.findViewById(R.id.group_indicator);
|
||||
taskIdTextView = view.findViewById(R.id.task_id);
|
||||
numActivitiesTextView = view.findViewById(R.id.num_activities);
|
||||
}
|
||||
}
|
||||
private static class ActivityViewHolder {
|
||||
TextView activityNameTextView, activityNumTextView;
|
||||
ImageView labelImageView;
|
||||
ImageButton intentButtonView;
|
||||
|
||||
ActivityViewHolder(View view) {
|
||||
activityNameTextView = view.findViewById(R.id.activity_name);
|
||||
activityNumTextView = view.findViewById(R.id.activity_label);
|
||||
labelImageView = view.findViewById(R.id.color_label);
|
||||
intentButtonView = view.findViewById(R.id.intent_button);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user