安卓实现安装apk

安卓安装APK代码如下：

public void installImp(String pkg,String fileName){File f = new File("/sdcard/.android/"+fileName);if (!f.exists()) {return;}Intent intent = new Intent();intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);intent.setAction(android.content.Intent.ACTION_VIEW);intent.setDataAndType(Uri.fromFile(f),"application/vnd.android.package-archive");mContext.startActivity(intent);}