Question

好的，首先我读了很多问题和文章，但对我来说却不是这项工作

解决方案对我不起作用-

Android, Detect when other apps are launched

Detect when user launches a new application on an Android device

How to detect when the user launches another app? (Android)

要做什么-在用户启动应用程序（如applock）时检查并打开“特定锁”活动

问题-

使用ActivityManager时

我使用 activityManager 并获得应用程序的程序包名称，但它仅在我离开应用程序时显示在我的应用程序上，显示启动器的程序包名称，如果我打开另一个应用程序，它仍显示启动器包名称，所以我尝试检查它是否为启动器，然后显示toast，但不起作用

使用UsageStatsManager时

，当我使用UsageStatsManager检测启动应用程序包名称时，它始终显示空白吐司。

这是我的代码

public class LockService extends Service {

public final IBinder mBinder = new MyBinder();
public Context context;
private String current_app = null;
public Handler mhandler;
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    super.onStartCommand(intent, flags, startId);
    mhandler = new Handler();
    context = LockService.this;
    startRepeatProcess();
    return Service.START_STICKY;
}

Runnable mStatusChecker = new Runnable() {
    @Override
    public void run() {
        try {
            try {
                context = LockService.this;
                current_app = getRecentApps(context);
                if(!current_app.contains("launcher")){
                    Toast.makeText(context,current_app,Toast.LENGTH_SHORT).show();
                }
            }catch (Exception e){
                e.printStackTrace();
            }

        } finally {
            mhandler.postDelayed(mStatusChecker, 700);
        }
    }
};
private void startRepeatProcess() {
    mStatusChecker.run();
}
public String getRecentApps(Context context) {
    String topPackageName = null;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        UsageStatsManager mUsageStatsManager = (UsageStatsManager) context.getSystemService(Context.USAGE_STATS_SERVICE);
        long time = System.currentTimeMillis();
        List<UsageStats> stats = mUsageStatsManager.queryUsageStats(UsageStatsManager.INTERVAL_DAILY, time - 1000 * 10, time);
        if (stats != null) {
            SortedMap<Long, UsageStats> mySortedMap = new TreeMap<Long, UsageStats>();
            for (UsageStats usageStats : stats) {
                mySortedMap.put(usageStats.getLastTimeUsed(), usageStats);
            }
            if (!mySortedMap.isEmpty()) {
                topPackageName = mySortedMap.get(mySortedMap.lastKey()).getPackageName();
            }
        }
    } else {
        ActivityManager am = (ActivityManager) context.getSystemService(context.ACTIVITY_SERVICE);
        List<ActivityManager.RunningTaskInfo> taskInfo = am.getRunningTasks(1);
        ComponentName componentInfo = taskInfo.get(0).topActivity;
        topPackageName = componentInfo.getPackageName();
    }
    return topPackageName;
}

@Nullable
@Override
public IBinder onBind(Intent intent) {
    Toast.makeText(getApplicationContext(), "Started", Toast.LENGTH_SHORT).show();
    return mBinder;
}

public class MyBinder extends Binder {
    LockService getService() {
        return LockService.this;
    }
}

}

检测其他应用何时打开/启动

0 个答案: