How to get information about all the applications installed in your ANDROID Emulator or Phone? / How to use getPackageManager() in ANDROID ?

Hi all,
In this tutorial I will show you how to get the information about all the applications installed in your ANDROID phone.
What you have to do is create a ANDROID project inside the package pack.GetAllInstalledApplications amd name the java file “GetAllInstalledApplicationsExample.java” and copy the following code into it.

Here the “getPackageManager().getInstalledPackages(0);” gets information about all the packages installed in your ANDROID Phone or emulator.
Now go on and try this.

package pack.GetAllInstalledApplications;

import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.content.pm.PackageInfo;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class GetAllInstalledApplicationsExample extends Activity {

	 public  ArrayList<packageInfoStruct> res = new ArrayList<packageInfoStruct>();
	 public ListView list;
	 public String app_labels[];

	 public void onCreate(Bundle savedInstanceState) {
	        super.onCreate(savedInstanceState);
	        setContentView(R.layout.main);

	        getPackages();

	        list = (ListView)findViewById(R.id.ListView01);
			try{
				list.setAdapter(new ArrayAdapter<string>(this,
					android.R.layout.simple_dropdown_item_1line, app_labels));
			}catch(Exception e){
				System.out.println("Err ++> " + e.getMessage());
				Toast.makeText(getApplicationContext(),e.getMessage(),Toast.LENGTH_SHORT).show();
			}

	 }
	private ArrayList<packageInfoStruct> getPackages() {
	    ArrayList<packageInfoStruct> apps = getInstalledApps(false);
	    final int max = apps.size();
	    for (int i=0; i < max; i++) {
	        apps.get(i);
	    }
	    return apps;
	}

	private ArrayList<packageInfoStruct> getInstalledApps(boolean getSysPackages) {

	    List<packageInfo> packs = getPackageManager().getInstalledPackages(0);
	    try{
	    	app_labels = new String[packs.size()];
	    }catch(Exception e){
			Toast.makeText(getApplicationContext(),e.getMessage(),Toast.LENGTH_SHORT).show();
		}
	    for(int i=0;i < packs.size();i++) {
	        PackageInfo p = packs.get(i);
	        if ((!getSysPackages) && (p.versionName == null)) {
	            continue ;
	        }
	        PackageInfoStruct newInfo = new PackageInfoStruct();
	        newInfo.appname = p.applicationInfo.loadLabel(getPackageManager()).toString();
	        newInfo.pname = p.packageName;
	        newInfo.versionName = p.versionName;
	        newInfo.versionCode = p.versionCode;
	        newInfo.icon = p.applicationInfo.loadIcon(getPackageManager());
	        res.add(newInfo);

	        app_labels[i] = newInfo.appname;
	    }
	    return res;
	}
}
/* This class is for storing the data for each application */
class PackageInfoStruct {
    String appname = "";
    String pname = "";
    String versionName = "";
    int versionCode = 0;
    Drawable icon;
}

The main.xml file

<?xml version="1.0" encoding="utf-8"?>
<linearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
 <listView android:id="@+id/ListView01"
  android:layout_height="375px"
  android:layout_width="fill_parent">
 </listView>
</linearLayout>

The manifest.xml file

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="pack.GetAllInstalledApplications"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".GetAllInstalledApplicationsExample"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>

Showin all applications installed in your ANDROID Phone or emulator

You can download the source code from here.