Get all applications android

How to get list of Installed Apps in Android

Android PackageManager class is used for retrieving various kinds of information related to the application packages that are currently installed on the device. You can get an instance of this class through getPackageManager().

Project Description

• In this Android 4 example, we will get list of installed apps in Android device and create custom ListView and populate its items using custom BaseAdapter.
• Here, we are going to implement OnItemClickListener event listener which calls onItemClick() callback method where we retrieve a particular row and create a object containing android application information and start another activity to display the installed app information such as Application name, package name, version, features, required permissions, path info, target SDK version, installed and modified date.

Environment Used

• JDK 6 (Java SE 6)
• Eclipse Indigo/Juno IDE for Java EE Developers
• Android SDK 4.0.3 / 4.2 Jelly Bean
• Android Development Tools (ADT) Plugin for Eclipse (ADT version 21.0.0)
• Refer this link to setup the Android development environment or this link to update to a latest version of Android SDK

Prerequisites

Create Android Project

• Create a new Android Project and enter the Application name as AppsList.
• Project name as AppsList.
• Enter the package name as com.ibc.android.demo.appslist.activity.
• Enter the Activity name as ApkListActivity.
• Enter the Layout name as main.
• Click Finish.

strings.xml

Open res/values/strings.xml and replace it with following content.

XML layout files

main layout file (main.xml)

This file defines a layout for displaying the result of installed apps in ListView widget. Open main.xml file in res/layout and copy the following content.

ListView row item layout file (apklist_item)

This layout defines only TextView widget. We can display of the icon of installed app in TextView using setCompoundDrawables() method.

Second Activity’s layout file (apkinfo.xml)

Create AppData class

This class extends android.app.Application which is used to maintain global application state, in this case contains an instance variable android.content.pm.PackageInfo. PackageInfo contains overall information about the contents of a package. This corresponds to all of the information collected from AndroidManifest.xml.

Create a new Java class “AppData.java” in package “com.ibc.android.demo.appslist.app” and copy the following code.

Custom BaseAdapter class

Create a new class “ApkAdapter” in “com.ibc.android.demo.appslist.adapter” package and copy the following code. This class extends android.widget.BaseAdapter to provide custom row layout and data for ListView.

Activity class

MainActivity class (ApkListActivity.java)

Open this activity class and copy the following code. In onCreate(), we get the list of installed apps and filtering out system app.

Second Activity class (ApkInfo.java)

Create a new class “ApkInfo.java” in package “com.ibc.android.demo.appslist.activity” and copy the following code.

AndroidManifest.xml

Output

Run your application
First Screen/Activity

Second Screen/Activity

Project Folder Structure

The complete folder structure of this example is shown below.

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How to Get List of Installed Apps in Android

Android PackageManager class is used to retrieve information on the application packages that are currently installed on the device. You can get an instance of PackageManager class by calling getPackageManager() . PackageManager provides methods for querying and manipulating installed packages and related permissions, etc. In this Android example, we we get list of installed apps in Android.

packageManager.getInstalledApplications() return a List of all application packages that are installed on the device. If we set the flag GET_UNINSTALLED_PACKAGES has been set, a list of all applications including those deleted with DONT_DELETE_DATA (partially installed apps with data directory) will be returned.

1. Creating application layout in xml

activity_main.xml

As you can see in the attached screenshot, we will be creating a ListView to show all of the installed applications in android.

snippet_list_row.xml

This layout is being used by the ListView Adapter for representing application details. It shows application icon, application name and application package.

2. Writing Java class

AllAppsActivity.java

This is the main application class that is used to initialize and list the installed applications. As getting the list of application details from PackageManage is a long running task, we will do that in AsyncTask. Also, this class is using custom Adapter “ApplicationAdapter” for custom ListView.

ApplicationAdapter.java

Download Complete Example

Download complete Eclipse project source code from GitHub.

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