src/com/android/settings/UsageStatsActivity.java - platform/packages/apps/Settings - Git at Google

 /**
  * 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 android.app.Activity;
 import android.app.usage.UsageStats;
 import android.app.usage.UsageStatsManager;
 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.text.format.DateUtils;
 import android.util.ArrayMap;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.AdapterView;
 import android.widget.AdapterView.OnItemSelectedListener;
 import android.widget.BaseAdapter;
 import android.widget.ListView;
 import android.widget.Spinner;
 import android.widget.TextView;

 import java.text.DateFormat;
 import java.util.ArrayList;
 import java.util.Calendar;
 import java.util.Collections;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Map;

 /**
  * Activity to display package usage statistics.
  */
 public class UsageStatsActivity extends Activity implements OnItemSelectedListener {
     private static final String TAG = "UsageStatsActivity";
     private static final boolean localLOGV = false;
     private UsageStatsManager mUsageStatsManager;
     private LayoutInflater mInflater;
     private UsageStatsAdapter mAdapter;
     private PackageManager mPm;

     public static class AppNameComparator implements Comparator<UsageStats> {
         private Map<String, String> mAppLabelList;

         AppNameComparator(Map<String, String> appList) {
             mAppLabelList = appList;
         }

         @Override
         public final int compare(UsageStats a, UsageStats b) {
             String alabel = mAppLabelList.get(a.getPackageName());
             String blabel = mAppLabelList.get(b.getPackageName());
             return alabel.compareTo(blabel);
         }
     }

     public static class LastTimeUsedComparator implements Comparator<UsageStats> {
         @Override
         public final int compare(UsageStats a, UsageStats b) {
             // return by descending order
             return Long.compare(b.getLastTimeUsed(), a.getLastTimeUsed());
         }
     }

     public static class UsageTimeComparator implements Comparator<UsageStats> {
         @Override
         public final int compare(UsageStats a, UsageStats b) {
             return Long.compare(b.getTotalTimeInForeground(), a.getTotalTimeInForeground());
         }
     }

     // View Holder used when displaying views
     static class AppViewHolder {
         TextView pkgName;
         TextView lastTimeUsed;
         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_LAST_TIME_USED = 1;
         private static final int _DISPLAY_ORDER_APP_NAME = 2;

         private int mDisplayOrder = _DISPLAY_ORDER_USAGE_TIME;
         private LastTimeUsedComparator mLastTimeUsedComparator = new LastTimeUsedComparator();
         private UsageTimeComparator mUsageTimeComparator = new UsageTimeComparator();
         private AppNameComparator mAppLabelComparator;
         private final ArrayMap<String, String> mAppLabelMap = new ArrayMap<>();
         private final ArrayList<UsageStats> mPackageStats = new ArrayList<>();

         UsageStatsAdapter() {
             Calendar cal = Calendar.getInstance();
             cal.add(Calendar.DAY_OF_YEAR, -5);

             final List<UsageStats> stats =
                     mUsageStatsManager.queryUsageStats(UsageStatsManager.INTERVAL_BEST,
                             cal.getTimeInMillis(), System.currentTimeMillis());
             if (stats == null) {
                 return;
             }

             ArrayMap<String, UsageStats> map = new ArrayMap<>();
             final int statCount = stats.size();
             for (int i = 0; i < statCount; i++) {
                 final android.app.usage.UsageStats pkgStats = stats.get(i);

                 // load application labels for each application
                 try {
                     ApplicationInfo appInfo = mPm.getApplicationInfo(pkgStats.getPackageName(), 0);
                     String label = appInfo.loadLabel(mPm).toString();
                     mAppLabelMap.put(pkgStats.getPackageName(), label);

                     UsageStats existingStats =
                             map.get(pkgStats.getPackageName());
                     if (existingStats == null) {
                         map.put(pkgStats.getPackageName(), pkgStats);
                     } else {
                         existingStats.add(pkgStats);
                     }

                 } catch (NameNotFoundException e) {
                     // This package may be gone.
                 }
             }
             mPackageStats.addAll(map.values());

             // Sort list
             mAppLabelComparator = new AppNameComparator(mAppLabelMap);
             sortList();
         }

         @Override
         public int getCount() {
             return mPackageStats.size();
         }

         @Override
         public Object getItem(int position) {
             return mPackageStats.get(position);
         }

         @Override
         public long getItemId(int position) {
             return position;
         }

         @Override
         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.lastTimeUsed = (TextView) convertView.findViewById(R.id.last_time_used);
                 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
             UsageStats pkgStats = mPackageStats.get(position);
             if (pkgStats != null) {
                 String label = mAppLabelMap.get(pkgStats.getPackageName());
                 holder.pkgName.setText(label);
                 holder.lastTimeUsed.setText(DateUtils.formatSameDayTime(pkgStats.getLastTimeUsed(),
                         System.currentTimeMillis(), DateFormat.MEDIUM, DateFormat.MEDIUM));
                 holder.usageTime.setText(
                         DateUtils.formatElapsedTime(pkgStats.getTotalTimeInForeground() / 1000));
             } else {
                 Log.w(TAG, "No usage stats info for package:" + position);
             }
             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(mPackageStats, mUsageTimeComparator);
             } else if (mDisplayOrder == _DISPLAY_ORDER_LAST_TIME_USED) {
                 if (localLOGV) Log.i(TAG, "Sorting by last time used");
                 Collections.sort(mPackageStats, mLastTimeUsedComparator);
             } else if (mDisplayOrder == _DISPLAY_ORDER_APP_NAME) {
                 if (localLOGV) Log.i(TAG, "Sorting by application name");
                 Collections.sort(mPackageStats, mAppLabelComparator);
             }
             notifyDataSetChanged();
         }
     }

     /** Called when the activity is first created. */
     @Override
     protected void onCreate(Bundle icicle) {
         super.onCreate(icicle);
         setContentView(R.layout.usage_stats);

         mUsageStatsManager = (UsageStatsManager) getSystemService(Context.USAGE_STATS_SERVICE);
         mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
         mPm = getPackageManager();

         Spinner typeSpinner = (Spinner) findViewById(R.id.typeSpinner);
         typeSpinner.setOnItemSelectedListener(this);

         ListView listView = (ListView) findViewById(R.id.pkg_list);
         mAdapter = new UsageStatsAdapter();
         listView.setAdapter(mAdapter);
     }

     @Override
     public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
         mAdapter.sortList(position);
     }

     @Override
     public void onNothingSelected(AdapterView<?> parent) {
         // do nothing
     }
 }
	/**
	* 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 android.app.Activity;
	import android.app.usage.UsageStats;
	import android.app.usage.UsageStatsManager;
	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.text.format.DateUtils;
	import android.util.ArrayMap;
	import android.util.Log;
	import android.view.LayoutInflater;
	import android.view.View;
	import android.view.ViewGroup;
	import android.widget.AdapterView;
	import android.widget.AdapterView.OnItemSelectedListener;
	import android.widget.BaseAdapter;
	import android.widget.ListView;
	import android.widget.Spinner;
	import android.widget.TextView;

	import java.text.DateFormat;
	import java.util.ArrayList;
	import java.util.Calendar;
	import java.util.Collections;
	import java.util.Comparator;
	import java.util.List;
	import java.util.Map;

	/**
	* Activity to display package usage statistics.
	*/
	public class UsageStatsActivity extends Activity implements OnItemSelectedListener {
	private static final String TAG = "UsageStatsActivity";
	private static final boolean localLOGV = false;
	private UsageStatsManager mUsageStatsManager;
	private LayoutInflater mInflater;
	private UsageStatsAdapter mAdapter;
	private PackageManager mPm;

	public static class AppNameComparator implements Comparator<UsageStats> {
	private Map<String, String> mAppLabelList;

	AppNameComparator(Map<String, String> appList) {
	mAppLabelList = appList;
	}

	@Override
	public final int compare(UsageStats a, UsageStats b) {
	String alabel = mAppLabelList.get(a.getPackageName());
	String blabel = mAppLabelList.get(b.getPackageName());
	return alabel.compareTo(blabel);
	}
	}

	public static class LastTimeUsedComparator implements Comparator<UsageStats> {
	@Override
	public final int compare(UsageStats a, UsageStats b) {
	// return by descending order
	return Long.compare(b.getLastTimeUsed(), a.getLastTimeUsed());
	}
	}

	public static class UsageTimeComparator implements Comparator<UsageStats> {
	@Override
	public final int compare(UsageStats a, UsageStats b) {
	return Long.compare(b.getTotalTimeInForeground(), a.getTotalTimeInForeground());
	}
	}

	// View Holder used when displaying views
	static class AppViewHolder {
	TextView pkgName;
	TextView lastTimeUsed;
	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_LAST_TIME_USED = 1;
	private static final int _DISPLAY_ORDER_APP_NAME = 2;

	private int mDisplayOrder = _DISPLAY_ORDER_USAGE_TIME;
	private LastTimeUsedComparator mLastTimeUsedComparator = new LastTimeUsedComparator();
	private UsageTimeComparator mUsageTimeComparator = new UsageTimeComparator();
	private AppNameComparator mAppLabelComparator;
	private final ArrayMap<String, String> mAppLabelMap = new ArrayMap<>();
	private final ArrayList<UsageStats> mPackageStats = new ArrayList<>();

	UsageStatsAdapter() {
	Calendar cal = Calendar.getInstance();
	cal.add(Calendar.DAY_OF_YEAR, -5);

	final List<UsageStats> stats =
	mUsageStatsManager.queryUsageStats(UsageStatsManager.INTERVAL_BEST,
	cal.getTimeInMillis(), System.currentTimeMillis());
	if (stats == null) {
	return;
	}

	ArrayMap<String, UsageStats> map = new ArrayMap<>();
	final int statCount = stats.size();
	for (int i = 0; i < statCount; i++) {
	final android.app.usage.UsageStats pkgStats = stats.get(i);

	// load application labels for each application
	try {
	ApplicationInfo appInfo = mPm.getApplicationInfo(pkgStats.getPackageName(), 0);
	String label = appInfo.loadLabel(mPm).toString();
	mAppLabelMap.put(pkgStats.getPackageName(), label);

	UsageStats existingStats =
	map.get(pkgStats.getPackageName());
	if (existingStats == null) {
	map.put(pkgStats.getPackageName(), pkgStats);
	} else {
	existingStats.add(pkgStats);
	}

	} catch (NameNotFoundException e) {
	// This package may be gone.
	}
	}
	mPackageStats.addAll(map.values());

	// Sort list
	mAppLabelComparator = new AppNameComparator(mAppLabelMap);
	sortList();
	}

	@Override
	public int getCount() {
	return mPackageStats.size();
	}

	@Override
	public Object getItem(int position) {
	return mPackageStats.get(position);
	}

	@Override
	public long getItemId(int position) {
	return position;
	}

	@Override
	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.lastTimeUsed = (TextView) convertView.findViewById(R.id.last_time_used);
	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
	UsageStats pkgStats = mPackageStats.get(position);
	if (pkgStats != null) {
	String label = mAppLabelMap.get(pkgStats.getPackageName());
	holder.pkgName.setText(label);
	holder.lastTimeUsed.setText(DateUtils.formatSameDayTime(pkgStats.getLastTimeUsed(),
	System.currentTimeMillis(), DateFormat.MEDIUM, DateFormat.MEDIUM));
	holder.usageTime.setText(
	DateUtils.formatElapsedTime(pkgStats.getTotalTimeInForeground() / 1000));
	} else {
	Log.w(TAG, "No usage stats info for package:" + position);
	}
	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(mPackageStats, mUsageTimeComparator);
	} else if (mDisplayOrder == _DISPLAY_ORDER_LAST_TIME_USED) {
	if (localLOGV) Log.i(TAG, "Sorting by last time used");
	Collections.sort(mPackageStats, mLastTimeUsedComparator);
	} else if (mDisplayOrder == _DISPLAY_ORDER_APP_NAME) {
	if (localLOGV) Log.i(TAG, "Sorting by application name");
	Collections.sort(mPackageStats, mAppLabelComparator);
	}
	notifyDataSetChanged();
	}
	}

	/** Called when the activity is first created. */
	@Override
	protected void onCreate(Bundle icicle) {
	super.onCreate(icicle);
	setContentView(R.layout.usage_stats);

	mUsageStatsManager = (UsageStatsManager) getSystemService(Context.USAGE_STATS_SERVICE);
	mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
	mPm = getPackageManager();

	Spinner typeSpinner = (Spinner) findViewById(R.id.typeSpinner);
	typeSpinner.setOnItemSelectedListener(this);

	ListView listView = (ListView) findViewById(R.id.pkg_list);
	mAdapter = new UsageStatsAdapter();
	listView.setAdapter(mAdapter);
	}

	@Override
	public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
	mAdapter.sortList(position);
	}

	@Override
	public void onNothingSelected(AdapterView<?> parent) {
	// do nothing
	}
	}