Android安装卸载程序解析

在Android安装卸载程序的源码中我们知道：

Java代码

<activityandroid:name=".PackageInstallerActivity">
<intent-filter>
<actionandroid:name="android.intent.action.VIEW"/>
<categoryandroid:name="android.intent.category.DEFAULT"/>
<dataandroid:scheme="content"/>
<dataandroid:scheme="file"/>
<dataandroid:mimeType="application/vnd.android.package-archive"/>
</intent-filter>
</activity>
<activityandroid:name=".UninstallerActivity">
<intent-filter>
<actionandroid:name="android.intent.action.VIEW"/>
<actionandroid:name="android.intent.action.DELETE"/>
<categoryandroid:name="android.intent.category.DEFAULT"/>
<dataandroid:scheme="package"/>
</intent-filter>
</activity>

< activity android:name=".PackageInstallerActivity">   < 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=".UninstallerActivity">   < 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>

因为根据里面的权限我们可以从sd卡安装一个程序：

Java代码

StringfileName=Environment.getExternalStorageDirectory()+"/myApp.apk";
Intentintent=newIntent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.parse("file://"+filePath),"application/vnd.android.package-archive");
//或者
//intent.setDataAndType(Uri.fromFile(newFile(fileName)),"application/vnd.android.package-archive");
startActivity(intent);

String fileName = Environment.getExternalStorageDirectory() + "/myApp.apk";   Intent intent = new Intent(Intent.ACTION_VIEW);intent.setDataAndType(Uri.parse("file://" + filePath),"application/vnd.android.package-archive");//或者//intent.setDataAndType(Uri.fromFile(new File(fileName)), "application/vnd.android.package-archive"); startActivity(intent);

Android安装卸载程序的操作中要想卸载一个程序;

Java代码

UripackageURI=Uri.parse("package:com.android.myapp");
IntentuninstallIntent=newIntent(Intent.ACTION_DELETE,packageURI);
startActivity(uninstallIntent);

Uri packageURI = Uri.parse("package:com.android.myapp");   Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI);   startActivity(uninstallIntent);

默认是不支持安装非市场程序的因此判断一下

Java代码

intresult=Settings.Secure.getInt(getContentResolver(),Settings.Secure.INSTALL_NON_MARKET_APPS,0);
if(result==0){
//showsomedialoghere
//...
//andmaybeshowapplicationsettingsdialogmanually
Intentintent=newIntent();
intent.setAction(Settings.ACTION_APPLICATION_SETTINGS);
startActivity(intent);
}
转载：http://panxq0809.iteye.com/blog/668772

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