CoderzHeaven

April 3, 2011

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 packagepack.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 {publicArrayList<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.

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