com.android.packageinstaller,Android PackageInstaller 安装和卸载

应用的安装方式：adb install或者下载安装

过程分析请参考老罗的blog，这里记录一下第三方应用程序安装apk的过程。

安装的过程主要是调用PackageInstaller这个App，源代码的位置在package/app/PackageInstaller

AndroidManifest.xml如下，<?xml version=”1.0″ encoding=”utf-8″?>

package=”com.android.packageinstaller”>

android:allowBackup=”false”

android:theme=”@android:style/Theme.DeviceDefault.DialogWhenLarge.NoActionBar”>

android:configChanges=”orientation|keyboardHidden|screenSize”

android:excludeFromRecents=”true”>

android:configChanges=”orientation|keyboardHidden|screenSize”>

android:configChanges=”orientation|keyboardHidden|screenSize”

android:excludeFromRecents=”true”

android:theme=”@android:style/Theme.DeviceDefault.Dialog.NoActionBar”>

android:configChanges=”orientation|keyboardHidden|screenSize”>

安装和卸载APP主要用到了PackageInstallerActivity和UninstallActivity。

安装一个应用程序的过程如下：String fileName = Environment.getExternalStorageDirectory() + “/myApp.apk”;

Intent intent = new Intent(Intent.ACTION_VIEW);

intent.setDataAndType(Uri.fromFile(new File(fileName)), “application/vnd.android.package-archive”);

startActivity(intent);

卸载一个应用程序的过程如下：Uri packageURI = Uri.parse(“package:com.android.myapp”);

Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI);

startActivity(uninstallIntent);

默认是不支持非市场安装的，这里可判断一下：int result = Settings.Secure.getInt(getContentResolver(),

Settings.Secure.INSTALL_NON_MARKET_APPS, 0);

if (result == 0) {

// show some dialog here

// …

// and may be show application settings dialog manually

Intent intent = new Intent();

intent.setAction(Settings.ACTION_APPLICATION_SETTINGS);

startActivity(intent);

}