Android基础：Android中的action category type

* <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>

Intent intent = new Intent();
intent.setAction("android.intent.action.VIEW");
intent.addCategory("android.intent.category.DEFAULT");
intent.setDataAndType(Uri.parse("file://"+target), "application/vnd.android.package-archive");
startActivityForResult(intent, 0);