How to get a list of installed android Applications?

AndroidApps/ApplicationsMobile Development

This example demonstrates how do I get a list of installed android applications.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:tools="http://schemas.android.com/tools"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:padding="4dp"
   tools:context=".MainActivity">
   <ListView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:id="@+id/listView" />
</RelativeLayout>

Step 3 − Add the following code to src/MainActivity.java

import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import java.util.List;
public class MainActivity extends AppCompatActivity {
   ListView listView;
   ArrayAdapter arrayAdapter;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      listView = findViewById(R.id.listView);
      InstalledApps();
   }
   private void InstalledApps() {
      List<PackageInfo> list = getPackageManager().getInstalledPackages(0);
      for (int i = 0; i<list.size(); i++){
         PackageInfo packageInfo = list.get(i);
         if((packageInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) == 0){
            String appName = packageInfo.applicationInfo.loadLabel(getPackageManager()).toString();
            Log.e("App List" + Integer.toString(i), appName);
            arrayAdapter = new ArrayAdapter(this, R.layout.support_simple_spinner_dropdown_item, list);
            listView.setAdapter(arrayAdapter);
         }
      }
   }
}

Step 4 - Add the following code to androidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample">
   <application
      android:allowBackup="true"
      android:icon="@mipmap/ic_launcher"
      android:label="@string/app_name"
      android:roundIcon="@mipmap/ic_launcher_round"
      android:supportsRtl="true"
      android:theme="@style/AppTheme">
      <activity android:name=".MainActivity">
         <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
         </intent-filter>
      </activity>
   </application>
</manifest>

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click Run  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen –

Click here to download the project code.

raja
Published on 04-Sep-2019 15:03:18
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