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/*
* Copyright 2014 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.appusagestatistics;
import android.app.usage.UsageStats;
import android.app.usage.UsageStatsManager;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.provider.Settings;
import android.support.v4.app.Fragment;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Spinner;
import android.widget.SpinnerAdapter;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
/**
* Fragment that demonstrates how to use App Usage Statistics API.
*/
public class AppUsageStatisticsFragment extends Fragment {
private static final String TAG = AppUsageStatisticsFragment.class.getSimpleName();
//VisibleForTesting for variables below
UsageStatsManager mUsageStatsManager;
UsageListAdapter mUsageListAdapter;
RecyclerView mRecyclerView;
RecyclerView.LayoutManager mLayoutManager;
Button mOpenUsageSettingButton;
Spinner mSpinner;
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @return A new instance of fragment {@link AppUsageStatisticsFragment}.
*/
public static AppUsageStatisticsFragment newInstance() {
AppUsageStatisticsFragment fragment = new AppUsageStatisticsFragment();
return fragment;
}
public AppUsageStatisticsFragment() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mUsageStatsManager = (UsageStatsManager) getActivity()
.getSystemService("usagestats"); //Context.USAGE_STATS_SERVICE
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_app_usage_statistics, container, false);
}
@Override
public void onViewCreated(View rootView, Bundle savedInstanceState) {
super.onViewCreated(rootView, savedInstanceState);
mUsageListAdapter = new UsageListAdapter();
mRecyclerView = (RecyclerView) rootView.findViewById(R.id.recyclerview_app_usage);
mLayoutManager = mRecyclerView.getLayoutManager();
mRecyclerView.scrollToPosition(0);
mRecyclerView.setAdapter(mUsageListAdapter);
mOpenUsageSettingButton = (Button) rootView.findViewById(R.id.button_open_usage_setting);
mSpinner = (Spinner) rootView.findViewById(R.id.spinner_time_span);
SpinnerAdapter spinnerAdapter = ArrayAdapter.createFromResource(getActivity(),
R.array.action_list, android.R.layout.simple_spinner_dropdown_item);
mSpinner.setAdapter(spinnerAdapter);
mSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
String[] strings = getResources().getStringArray(R.array.action_list);
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
StatsUsageInterval statsUsageInterval = StatsUsageInterval
.getValue(strings[position]);
if (statsUsageInterval != null) {
List<UsageStats> usageStatsList =
getUsageStatistics(statsUsageInterval.mInterval);
Collections.sort(usageStatsList, new LastTimeLaunchedComparatorDesc());
updateAppsList(usageStatsList);
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
}
/**
* Returns the {@link #mRecyclerView} including the time span specified by the
* intervalType argument.
*
* @param intervalType The time interval by which the stats are aggregated.
* Corresponding to the value of {@link UsageStatsManager}.
* E.g. {@link UsageStatsManager#INTERVAL_DAILY}, {@link
* UsageStatsManager#INTERVAL_WEEKLY},
*
* @return A list of {@link android.app.usage.UsageStats}.
*/
public List<UsageStats> getUsageStatistics(int intervalType) {
// Get the app statistics since one year ago from the current time.
Calendar cal = Calendar.getInstance();
cal.add(Calendar.YEAR, -1);
List<UsageStats> queryUsageStats = mUsageStatsManager
.queryUsageStats(intervalType, cal.getTimeInMillis(),
System.currentTimeMillis());
if (queryUsageStats.size() == 0) {
Log.i(TAG, "The user may not allow the access to apps usage. ");
Toast.makeText(getActivity(),
getString(R.string.explanation_access_to_appusage_is_not_enabled),
Toast.LENGTH_LONG).show();
mOpenUsageSettingButton.setVisibility(View.VISIBLE);
mOpenUsageSettingButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(Settings.ACTION_USAGE_ACCESS_SETTINGS));
}
});
}
return queryUsageStats;
}
/**
* Updates the {@link #mRecyclerView} with the list of {@link UsageStats} passed as an argument.
*
* @param usageStatsList A list of {@link UsageStats} from which update the
* {@link #mRecyclerView}.
*/
//VisibleForTesting
void updateAppsList(List<UsageStats> usageStatsList) {
List<CustomUsageStats> customUsageStatsList = new ArrayList<>();
for (int i = 0; i < usageStatsList.size(); i++) {
CustomUsageStats customUsageStats = new CustomUsageStats();
customUsageStats.usageStats = usageStatsList.get(i);
try {
Drawable appIcon = getActivity().getPackageManager()
.getApplicationIcon(customUsageStats.usageStats.getPackageName());
customUsageStats.appIcon = appIcon;
} catch (PackageManager.NameNotFoundException e) {
Log.w(TAG, String.format("App Icon is not found for %s",
customUsageStats.usageStats.getPackageName()));
customUsageStats.appIcon = getActivity()
.getDrawable(R.drawable.ic_default_app_launcher);
}
customUsageStatsList.add(customUsageStats);
}
mUsageListAdapter.setCustomUsageStatsList(customUsageStatsList);
mUsageListAdapter.notifyDataSetChanged();
mRecyclerView.scrollToPosition(0);
}
/**
* The {@link Comparator} to sort a collection of {@link UsageStats} sorted by the timestamp
* last time the app was used in the descendant order.
*/
private static class LastTimeLaunchedComparatorDesc implements Comparator<UsageStats> {
@Override
public int compare(UsageStats left, UsageStats right) {
return Long.compare(right.getLastTimeUsed(), left.getLastTimeUsed());
}
}
/**
* Enum represents the intervals for {@link android.app.usage.UsageStatsManager} so that
* values for intervals can be found by a String representation.
*
*/
//VisibleForTesting
static enum StatsUsageInterval {
DAILY("Daily", UsageStatsManager.INTERVAL_DAILY),
WEEKLY("Weekly", UsageStatsManager.INTERVAL_WEEKLY),
MONTHLY("Monthly", UsageStatsManager.INTERVAL_MONTHLY),
YEARLY("Yearly", UsageStatsManager.INTERVAL_YEARLY);
private int mInterval;
private String mStringRepresentation;
StatsUsageInterval(String stringRepresentation, int interval) {
mStringRepresentation = stringRepresentation;
mInterval = interval;
}
static StatsUsageInterval getValue(String stringRepresentation) {
for (StatsUsageInterval statsUsageInterval : values()) {
if (statsUsageInterval.mStringRepresentation.equals(stringRepresentation)) {
return statsUsageInterval;
}
}
return null;
}
}
}
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