How to Find If a Particular Package Exists on My Android Device

How can I find if a particular package exists on my Android device?

Call any of the below method with the package name.

import android.content.pm.PackageManager;

// ...

    public boolean isPackageExisted(String targetPackage){
        List<ApplicationInfo> packages;
        PackageManager pm;

        pm = getPackageManager();        
        packages = pm.getInstalledApplications(0);
        for (ApplicationInfo packageInfo : packages) {
            if(packageInfo.packageName.equals(targetPackage))
                return true;
        }
        return false;
    }

 import android.content.pm.PackageManager;

 public boolean isPackageExisted(String targetPackage){
   PackageManager pm=getPackageManager();
   try {
     PackageInfo info=pm.getPackageInfo(targetPackage,PackageManager.GET_META_DATA);
   } catch (PackageManager.NameNotFoundException e) {
     return false;
   }  
   return true;
 }

Check if a package is installed in Android

Try this

PackageManager pm = getPackageManager();
        boolean app_installed;
        try {
            pm.getPackageInfo("PackageName",PackageManager.GET_ACTIVITIES);
            app_installed = true;
        }
        catch (PackageManager.NameNotFoundException e) {
            app_installed = false;
        }

And see this

Check if a package exists on Android Market

You can perform a simple test on the Android market URL as

https://play.google.com/store/apps/details?id=com.mycompany.myapp

Pass your Application Package name with the letters indented in bold letters in above URL, if you get any result then it is concluded that the Application Package name is already been used, if you get "We're sorry, the requested URL was not found on this server." then you can use the app package name.

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 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.

Android: How to Know if any application is already installed in android device using adb?

[Update 2]

Without using grep

adb shell pm list packages [your.package.name] as mentioned in the below answer

[Update]

According to (also) correct answer below, try grep the result from pm list packages.

adb shell pm list packages | grep com.your.app.package

[Original]

If the application is already installed and if you try to install the same app again, adb will return with an error - Failure [INSTALL_FAILED_ALREADY_EXISTS]. However, if you want to re-install the already installed app, then use -r parameter.

Ex:

adb install -r game.apk

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;
    }

}