Question

I downloaded apk file from url(my server) and save it in sdcard. If user install it from sdcard, I want to know, whether is any notification that app is installed successfully or is app istalled in device. Is there any callback on installed app

Answer 1

try this code :

protected boolean isAppInstalled(String packageName) {
        Intent mIntent = getPackageManager().getLaunchIntentForPackage(packageName);
        if (mIntent != null) {
            return true;
        }
        else {
            return false;
        }
    }

to get the package name of the app easily : just search your app in the google play website , and then you will take the id parameter ( it is the package name of the app) . Example :
you will search on Youtube app on google play , and you will find it in this url :

https://play.google.com/store/apps/details?id=com.google.android.youtube&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5nb29nbGUuYW5kcm9pZC55b3V0dWJlIl0.

the package name is the id param, so it is : com.google.android.youtube

And then when you want to test , you will just have :

String packageName = "com.google.android.youtube";
boolean isYoutubeInstalled = isAppInstalled(packageName);

PLUS : if you want to get the list of all installed apps in you device , you can find your answer in this tutorial