Android APK的安装

打开packages\apps\PackageInstaller下的清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.android.packageinstaller">

<original-package android:name="com.android.packageinstaller" />

<uses-permission android:name="android.permission.INSTALL_PACKAGES" />
<uses-permission android:name="android.permission.DELETE_PACKAGES" />
<uses-permission android:name="android.permission.CLEAR_APP_CACHE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.CLEAR_APP_USER_DATA" />
<application android:label="@string/app_name">
<activity android:name=".PackageInstallerActivity"
android:configChanges="orientation|keyboardHidden"
android:theme="@style/TallTitleBarTheme">
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<data android:scheme="content" />
<data android:scheme="file" />
<data android:mimeType="application/vnd.android.package-archive" />
</intent-filter>
</activity>
<activity android:name=".InstallAppProgress"
android:configChanges="orientation|keyboardHidden"
android:theme="@style/TallTitleBarTheme">
</activity>
<activity android:name=".UninstallerActivity"
android:configChanges="orientation|keyboardHidden"
android:theme="@style/TallTitleBarTheme">
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<action android:name="android.intent.action.DELETE" />
<category android:name="android.intent.category.DEFAULT" />
<data android:scheme="package" />
</intent-filter>
</activity>
<activity android:name=".UninstallAppProgress"
android:configChanges="orientation|keyboardHidden"
android:theme="@style/TallTitleBarTheme">
</activity>
</application>
</manifest>

项目布局：

<LinearLayout 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:orientation="vertical"
tools:context=".MainActivity" >

<EditText
android:id="@+id/et_path"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="请输入apk的路径" />
<Button
android:onClick="click"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="安装"

/>

</LinearLayout>

逻辑代码如下：

public class MainActivity extends Activity {

private EditText et_path;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

et_path = (EditText) findViewById(R.id.et_path);
}

public void click(View view) {
String path = et_path.getText().toString().trim();
/*
* <action android:name="android.intent.action.VIEW" /> <category
* android:name="android.intent.category.DEFAULT" /> <data
* android:scheme="content" /> <data android:scheme="file" /> <data
* android:mimeType="application/vnd.android.package-archive" />
*/
Intent intent = new Intent();
intent.setAction("android.intent.action.VIEW");
intent.addCategory("android.intent.category.DEFAULT");
intent.setDataAndType(Uri.fromFile(new File(path)), "application/vnd.android.package-archive");
startActivity(intent);
}
}

首先需要AndroidManifest.xml中加入安装程序权限:
<!-- 安装程序权限 -->
<uses-permission android:name="android.permission.INSTALL_PACKAGES"/>

接着将一个名为girl.apk的apk导入sdcard，然后运行项目效果如下



点击安装