How can I install Android PlayStore application from another application programmatically?

Question

I am new to creating android application and I am working on project where I need to download and install application from Android Playstore and install without user input. The only solution i could find is to launch market app and then click install button manually. But I want to install automatically. Is there any better way?

Answer 1

Installation of apps without user input isn't possible, but you can ask user to install it by following intent:

Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(GOOGLE_PLAY_APP_URL)); startActivity(intent);

And for check if app is already installed you can use something like this:

public static boolean isInstalled(Context context, String packageName) {
        PackageManager pkgManager = context.getPackageManager();
        Intent launchIntent = new Intent(Intent.ACTION_MAIN);
        launchIntent.addCategory(Intent.CATEGORY_LAUNCHER);
        List<ResolveInfo> resInfo = pkgManager.queryIntentActivities(launchIntent, 0);

        for (int i = 0; i < resInfo.size(); i++) {
            ResolveInfo ri = resInfo.get(i);
            String pkgName = ri.activityInfo.packageName;
            if (pkgName.contains(packageName)) {
                return true;
            }
        }
        return false;
}