Check Programmatically If App Is Installed on the Device

How to check programmatically if an application is installed or not in Android?

Try with this:

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Add respective layout
        setContentView(R.layout.main_activity);

        // Use package name which we want to check
        boolean isAppInstalled = appInstalledOrNot("com.check.application");  
        
        if(isAppInstalled) {
            //This intent will help you to launch if the package is already installed
            Intent LaunchIntent = getPackageManager()
                .getLaunchIntentForPackage("com.check.application");
            startActivity(LaunchIntent);
                    
            Log.i("SampleLog", "Application is already installed.");          
        } else {
            // Do whatever we want to do if application not installed
            // For example, Redirect to play store

            Log.i("SampleLog", "Application is not currently installed.");
        }
    }

    private boolean appInstalledOrNot(String uri) {
        PackageManager pm = getPackageManager();
        try {
            pm.getPackageInfo(uri, PackageManager.GET_ACTIVITIES);
            return true;
        } catch (PackageManager.NameNotFoundException e) {
        }

        return false;
    }

}

How to know if a particular application is installed or not on the device?

I found the answer here

Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
List<ResolveInfo> pkgAppsList = 
context.getPackageManager().queryIntentActivities( mainIntent, 0);
for (ResolveInfo resolveInfo : pkgAppsList) {
            Log.d(TAG, "__<>"+resolveInfo.activityInfo.packageName);
            if (resolveInfo.activityInfo.packageName != null 
                    && resolveInfo.activityInfo.packageName.equals(uri)) {
              return true;
          }
        }
        return false;

This worked for me perfectly.

Check if application is installed - Android

Try this:

private boolean isPackageInstalled(String packageName, PackageManager packageManager) {
    try {
        packageManager.getPackageInfo(packageName, 0);
        return true;
    } catch (PackageManager.NameNotFoundException e) {
        return false;
    }
}

It attempts to fetch information about the package whose name you passed in. Failing that, if a NameNotFoundException was thrown, it means that no package with that name is installed, so we return false.

Note that we pass in a PackageManager instead of a Context, so that the method is slightly more flexibly usable and doesn't violate the law of Demeter. You can use the method without access to a Context instance, as long as you have a PackageManager instance.

Use it like this:

public void someMethod() {
    // ...
    
    PackageManager pm = context.getPackageManager();
    boolean isInstalled = isPackageInstalled("com.somepackage.name", pm);
    
    // ...
}

Note: From Android 11 (API 30), you might need to declare <queries> in your manifest, depending on what package you're looking for. Check out the docs for more info.

How can I check whether an app is installed and open it?

Use this method.

public void OpenApp() {
    PackageManager pm = getPackageManager();
    final String LiveAppPackage = "com.example.app"; //Change to your package name.
    try {
        pm.getPackageInfo(LiveAppPackage, PackageManager.GET_ACTIVITIES);
        Intent intent = pm.getLaunchIntentForPackage(LiveAppPackage);
            if (intent == null) {
                throw new PackageManager.NameNotFoundException();
            }
            intent.addCategory(Intent.CATEGORY_LAUNCHER);
            context.startActivity(intent);

    }
    catch (PackageManager.NameNotFoundException e) {
        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
                ActivityThis);

        DialogInterface.OnClickListener onClickListener =  new DialogInterface.OnClickListener(){
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        if(which == DialogInterface.BUTTON_POSITIVE){
                                //Try to open Market and if fails, open play store.
                                try {
                                    startActivity(new Intent(Intent.ACTION_VIEW, Uri
                                            .parse("market://details?id="
                                                    + LiveAppPackage)));
                                } catch (android.content.ActivityNotFoundException e1) {
                                    startActivity(new Intent(
                                            Intent.ACTION_VIEW,
                                            Uri.parse("https://play.google.com/store/apps/details?id="
                                                    + LiveAppPackage)));
                                }

                        } else{
                            dialog.dismiss();
                        }
                    }
                };

        alertDialogBuilder.setTitle("App Title")
                .setCancelable(true)
                .setPositiveButton("Install", onClickListener);
        alertDialogBuilder.setNegativeButton("Cancel", onClickListener);

        alertDialogBuilder.setMessage("Second app is not currently installed\n\nLike to install it?"); //Change to your message

        // create alert dialog
        AlertDialog alertDialog = alertDialogBuilder.create();

        // show it
        alertDialog.show();
    }
}

Check App is installed on device android code

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

How to check programmatically if an App is installed?

I think this is not possible directly, but if the apps register uri schemes you could test for that.

A URI scheme is for example fb:// for the facebook app. You can register that in the info.plist of your app. [UIApplication canOpenURL:url] will tell you if a certain url will or will not open. So testing if fb:// will open, will indicate that there is an app installed which registered fb:// - which is a good hint for the facebook app.

// check whether facebook is (likely to be) installed or not
if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"fb://"]]) {
    // Safe to launch the facebook app
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"fb://profile/200538917420"]];
}

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