/**
* Copyright (C) 2007 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.android.settings;
import com.android.internal.app.IUsageStats;
import com.android.settings.R;
import android.app.Activity;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.os.Bundle;
import android.os.RemoteException;
import android.os.ServiceManager;
import com.android.internal.os.PkgUsageStats;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.AdapterView.OnItemSelectedListener;
/**
* Activity to display package usage statistics.
*/
public class UsageStats extends Activity implements OnItemSelectedListener {
private static final String TAG="UsageStatsActivity";
private static final boolean localLOGV = true;
private Spinner mTypeSpinner;
private ListView mListView;
private IUsageStats mUsageStatsService;
private LayoutInflater mInflater;
private UsageStatsAdapter mAdapter;
private PackageManager mPm;
public static class AppNameComparator implements Comparator<PkgUsageStats> {
Map<String, CharSequence> mAppLabelList;
AppNameComparator(Map<String, CharSequence> appList) {
mAppLabelList = appList;
}
public final int compare(PkgUsageStats a, PkgUsageStats b) {
String alabel = mAppLabelList.get(a.packageName).toString();
String blabel = mAppLabelList.get(b.packageName).toString();
return alabel.compareTo(blabel);
}
}
public static class LaunchCountComparator implements Comparator<PkgUsageStats> {
public final int compare(PkgUsageStats a, PkgUsageStats b) {
// return by descending order
return b.launchCount - a.launchCount;
}
}
public static class UsageTimeComparator implements Comparator<PkgUsageStats> {
public final int compare(PkgUsageStats a, PkgUsageStats b) {
long ret = a.usageTime-b.usageTime;
if (ret == 0) {
return 0;
}
if (ret < 0) {
return 1;
}
return -1;
}
}
// View Holder used when displaying views
static class AppViewHolder {
TextView pkgName;
TextView launchCount;
TextView usageTime;
}
class UsageStatsAdapter extends BaseAdapter {
// Constants defining order for display order
private static final int _DISPLAY_ORDER_USAGE_TIME = 0;
private static final int _DISPLAY_ORDER_LAUNCH_COUNT = 1;
private static final int _DISPLAY_ORDER_APP_NAME = 2;
private int mDisplayOrder = _DISPLAY_ORDER_USAGE_TIME;
private List<PkgUsageStats> mUsageStats;
private LaunchCountComparator mLaunchCountComparator;
private UsageTimeComparator mUsageTimeComparator;
private AppNameComparator mAppLabelComparator;
private HashMap<String, CharSequence> mAppLabelMap;
UsageStatsAdapter() {
mUsageStats = new ArrayList<PkgUsageStats>();
mAppLabelMap = new HashMap<String, CharSequence>();
PkgUsageStats[] stats;
try {
stats = mUsageStatsService.getAllPkgUsageStats();
} catch (RemoteException e) {
Log.e(TAG, "Failed initializing usage stats service");
return;
}
if (stats == null) {
return;
}
for (PkgUsageStats ps : stats) {
mUsageStats.add(ps);
// load application labels for each application
CharSequence label;
try {
ApplicationInfo appInfo = mPm.getApplicationInfo(ps.packageName, 0);
label = appInfo.loadLabel(mPm);
} catch (NameNotFoundException e) {
label = ps.packageName;
}
mAppLabelMap.put(ps.packageName, label);
}
// Sort list
mLaunchCountComparator = new LaunchCountComparator();
mUsageTimeComparator = new UsageTimeComparator();
mAppLabelComparator = new AppNameComparator(mAppLabelMap);
sortList();
}
public int getCount() {
return mUsageStats.size();
}
public Object getItem(int position) {
return mUsageStats.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
// A ViewHolder keeps references to children views to avoid unneccessary calls
// to findViewById() on each row.
AppViewHolder holder;
// When convertView is not null, we can reuse it directly, there is no need
// to reinflate it. We only inflate a new View when the convertView supplied
// by ListView is null.
if (convertView == null) {
convertView = mInflater.inflate(R.layout.usage_stats_item, null);
// Creates a ViewHolder and store references to the two children views
// we want to bind data to.
holder = new AppViewHolder();
holder.pkgName = (TextView) convertView.findViewById(R.id.package_name);
holder.launchCount = (TextView) convertView.findViewById(R.id.launch_count);
holder.usageTime = (TextView) convertView.findViewById(R.id.usage_time);
convertView.setTag(holder);
} else {
// Get the ViewHolder back to get fast access to the TextView
// and the ImageView.
holder = (AppViewHolder) convertView.getTag();
}
// Bind the data efficiently with the holder
PkgUsageStats pkgStats = mUsageStats.get(position);
if (pkgStats != null) {
CharSequence label = mAppLabelMap.get(pkgStats.packageName);
holder.pkgName.setText(label);
holder.launchCount.setText(String.valueOf(pkgStats.launchCount));
holder.usageTime.setText(String.valueOf(pkgStats.usageTime)+" ms");
} else {
Log.w(TAG, "No usage stats info for package:"+pkgStats.packageName);
}
return convertView;
}
void sortList(int sortOrder) {
if (mDisplayOrder == sortOrder) {
// do nothing
return;
}
mDisplayOrder= sortOrder;
sortList();
}
private void sortList() {
if (mDisplayOrder == _DISPLAY_ORDER_USAGE_TIME) {
if (localLOGV) Log.i(TAG, "Sorting by usage time");
Collections.sort(mUsageStats, mUsageTimeComparator);
} else if (mDisplayOrder == _DISPLAY_ORDER_LAUNCH_COUNT) {
if (localLOGV) Log.i(TAG, "Sorting launch count");
Collections.sort(mUsageStats, mLaunchCountComparator);
} else if (mDisplayOrder == _DISPLAY_ORDER_APP_NAME) {
if (localLOGV) Log.i(TAG, "Sorting by application name");
Collections.sort(mUsageStats, mAppLabelComparator);
}
notifyDataSetChanged();
}
}
/** Called when the activity is first created. */
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
mUsageStatsService = IUsageStats.Stub.asInterface(ServiceManager.getService("usagestats"));
if (mUsageStatsService == null) {
Log.e(TAG, "Failed to retrieve usagestats service");
return;
}
mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mPm = getPackageManager();
setContentView(R.layout.usage_stats);
mTypeSpinner = (Spinner) findViewById(R.id.typeSpinner);
mTypeSpinner.setOnItemSelectedListener(this);
mListView = (ListView) findViewById(R.id.pkg_list);
// Initialize the inflater
mAdapter = new UsageStatsAdapter();
mListView.setAdapter(mAdapter);
}
public void onItemSelected(AdapterView<?> parent, View view, int position,
long id) {
mAdapter.sortList(position);
}
public void onNothingSelected(AdapterView<?> parent) {
// do nothing
}
}
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