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I'm working an app called 'Prevent Uninstall', in this app user creates 4 digit pin and I'm going to save this pin in sharedpreferences. My requirement is when user clicks uninstall button of any application a popup or window should be displayed to confirm the pin which is already created in my application. So is it possible?, if possible please help me, i got stuck at this point.

hello guys finally i have found a solution below..

first get the current activity on foreground

public boolean isConcernedAppIsInForeground() {
    ActivityManager manager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
    List<ActivityManager.RunningTaskInfo> task = manager.getRunningTasks(5);
    if (Build.VERSION.SDK_INT <= 20) {
        if (task.size() > 0) {
            ComponentName componentInfo = task.get(0).topActivity;
            for (int i = 0; pakageName != null && i < pakageName.size(); i++) {
                if (componentInfo.getPackageName().equals("com.google.android.packageinstaller")) {
                    currentApp_for = pakageName.get(i);
                    return true;
                }
            }
        }
    } else {
        for (int i = 0; pakageName != null && i < pakageName.size(); i++) {
            if (retriveNewApp().equals("com.google.android.packageinstaller")) {
                currentApp_for = pakageName.get(i);
                Log.e("DSSDSDCSDC", currentApp_for + " LLLLLL::::");
                return true;
            }
        }
    }
    return false;
}

To get the current activity on foreground above api level 21+ use this code

private String retriveNewApp() {
    String currentApp_for_ = null;
    if (Build.VERSION.SDK_INT >= 21) {
        UsageStatsManager usm = (UsageStatsManager) this.getSystemService(Context.USAGE_STATS_SERVICE);
        long time = System.currentTimeMillis();
        List<UsageStats> applist = usm.queryUsageStats(UsageStatsManager.INTERVAL_DAILY, time - 1000 * 1000, time);
        if (applist != null && applist.size() > 0) {
            SortedMap<Long, UsageStats> mySortedMap = new TreeMap<>();
            for (UsageStats usageStats : applist) {
                mySortedMap.put(usageStats.getLastTimeUsed(), usageStats);
            }
            if (mySortedMap != null && !mySortedMap.isEmpty()) {
                currentApp_for_ = mySortedMap.get(mySortedMap.lastKey()).getPackageName();
            }
            Log.e(">>>>>>>>>><<<", "Current App in foreground is: " + currentApp_for_);
        } else {
            Log.e("CCC>>C>C>C>", "User not given the permission: " + currentApp_for_);
        }


    }
    return currentApp_for_;
}

Important permission

<uses-permission
    android:name="android.permission.PACKAGE_USAGE_STATS"
    tools:ignore="ProtectedPermissions" />

now check the current activity is in foreground or not using service

    if (isConcernedAppIsInForeground()) {
     if (!currentApp.matches(previousApp)) {
        // if matches do your activity here..
startActivity(newIntent(context,Draw_Lock.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK));

       previousApp = currentApp;
            }
        }
   }

Note: When user clicks on uninstall button of any app alert dialog popups which is known as 'com.google.android.packageinstaller' activity check weather this activity is in foreground or not using service class

Apptrends media
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  • Yes, it's possible in the sense that you need to register a broadcast listener. Check this thread: https://stackoverflow.com/questions/7470314/receiving-package-install-and-uninstall-events – Udayaditya Barua Mar 18 '20 at 06:20
  • Tq sir @Uday, but this https://stackoverflow.com/questions/7470314/receiving-package-install-and-uninstall-events works only when user install the app ,but i need when user clicks on uninstall button of any app. i have found the solution here it is https://stackoverflow.com/questions/60733805/how-to-show-window-when-user-click-on-uninstall-button-of-any-app – Apptrends media Mar 18 '20 at 06:35

0 Answers0