Android AppUasge统计一招制敌

Tamic/文
http://blog.csdn.net/sk719887916/article/details/71105441

Google从 API 21 新增了接口 android.app.usage , 通过这个api我们可以统计到每个app的使用情况,启动次数,启动时间等,也可以判断是否前后台,比较方便,今天就来深入的学习一下 。

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Google从 API 21 新增了接口 android.app.usage , 通过这个api我们可以统计到每个app的使用情况,启动次数,启动时间等,也可以判断是否运行在前后台,比较方便,也可以用作埋点,统计框架中,今天就来深入的学习一下。

获取前后台

5.0以前做法是这样的:

 public String getForegroundApp(Context context) { List<RunningAppProcesInfo> lr=context.getRunningAppProcesses(); if (lr == null) { return null; } for (RunningAppProcessInfo ra : lr) { if (ra.importance == RunningAppProcessInfo.IMPORTANCE_VISIBLE || ra.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND) { return ra.processName; } } return null; }

突然从5.0就不能用了。这就有点eggs pain, 很多人通过检查当前自己应用的界面做标记, 在可见和不可见的生命周期中分别做记录,来判断是否前台。 getRecentTasks( ) 也废弃使用了,我们在清单注册getTask权限已经被收回了,那怎么办,android api其实已经想好了替代品,那就是 AppUsageStatistics
需要用户授权才可以,好,就学学姿势吧。
5.0以后用AppUsageStatistics来获取

private String getForegroundApp() { long ts = System.currentTimeMillis(); List<UsageStats> queryUsageStats = usageStatsManager.queryUsageStats(UsageStatsManager.INTERVAL_BEST,ts-2000, ts); if (queryUsageStats == null || queryUsageStats.isEmpty()) { return null; } UsageStats recentStats = null; for (UsageStats usageStats : queryUsageStats) { if(recentStats == null || recentStats.getLastTimeUsed() < usageStats.getLastTimeUsed()) { recentStats = usageStats; } } return recentStats.getPackageName; }

看是不是 很简单,或许你都没听过吧!好 follow me!

AppUasgeStatistics

1 首先清单申请权限

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.android.appusagestatistics" android:versionCode="1" android:versionName="1.0"> <uses-permission android:name="android.permission.PACKAGE_USAGE_STATS"/> <application android:allowBackup="true" android:label="@string/app_name" android:icon="@drawable/ic_launcher" android:theme="@style/Theme.AppCompat.Light"> <activity android:name=".AppUsageStatisticsActivity" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application></manifest>

2 获取UsageStatsManager
接着通过context GET到UsageStatsManager。

UsageStatsManager mUsageStatsManager = (UsageStatsManager) getActivity() .getSystemService("usagestats"); //Context.USAGE_STATS_SERVICE

3 使用
我通过这个api获取一下每个app的使用情况, intervalType是统计的周期,是统计区间,UsageStatsManager 内部提供四个原则,有:年,月,周,日。

 DAILY("Daily", UsageStatsManager.INTERVAL_DAILY), WEEKLY("Weekly", UsageStatsManager.INTERVAL_WEEKLY), MONTHLY("Monthly", UsageStatsManager.INTERVAL_MONTHLY), YEARLY("Yearly", UsageStatsManager.INTERVAL_YEARLY);

为了拓展我定义一个CustomUsageStats, UsageStats是谷歌提供一个统计类,里面可以获取app的使用情况。

public class CustomUsageStats { public UsageStats usageStats; public Drawable appIcon;}

下面这段代码就是获取每个app的使用情况的。

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; }

当然上面代码只是获取app的使用情况,来写个列表,用适配器用来展现app的包名,最后使用的时间,以及图标icon。

public class UsageListAdapter extends RecyclerView.Adapter<UsageListAdapter.ViewHolder> { private List<CustomUsageStats> mCustomUsageStatsList = new ArrayList<>(); private DateFormat mDateFormat = new SimpleDateFormat(); /** * Provide a reference to the type of views that you are using (custom ViewHolder) */ public static class ViewHolder extends RecyclerView.ViewHolder { private final TextView mPackageName; private final TextView mLastTimeUsed; private final ImageView mAppIcon; public ViewHolder(View v) { super(v); mPackageName = (TextView) v.findViewById(R.id.textview_package_name); mLastTimeUsed = (TextView) v.findViewById(R.id.textview_last_time_used); mAppIcon = (ImageView) v.findViewById(R.id.app_icon); } public TextView getLastTimeUsed() { return mLastTimeUsed; } public TextView getPackageName() { return mPackageName; } public ImageView getAppIcon() { return mAppIcon; } } public UsageListAdapter() { } @Override public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) { View v = LayoutInflater.from(viewGroup.getContext()) .inflate(R.layout.usage_row, viewGroup, false); return new ViewHolder(v); } @Override public void onBindViewHolder(ViewHolder viewHolder, final int position) { viewHolder.getPackageName().setText( mCustomUsageStatsList.get(position).usageStats.getPackageName()); long lastTimeUsed = mCustomUsageStatsList.get(position).usageStats.getLastTimeUsed(); viewHolder.getLastTimeUsed().setText(mDateFormat.format(new Date(lastTimeUsed))); viewHolder.getAppIcon().setImageDrawable(mCustomUsageStatsList.get(position).appIcon); } @Override public int getItemCount() { return mCustomUsageStatsList.size(); } public void setCustomUsageStatsList(List<CustomUsageStats> customUsageStats) { mCustomUsageStatsList = customUsageStats; }}

后记

这个api不是说想用就能用,必须用户授权了才能统计到。所以我们在做移动端埋点时可以加入这个api,方便我们更精确的搜集app的使用情况。更多技巧请继续关注。

Tamic/文
http://blog.csdn.net/sk719887916/article/details/71105441

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