Intent intent = new Intent(); intent.setAction(Intent.ACTION_VIEW); File file = new File(Environment.getExternalStorageDirectory() .getAbsolutePath()+"/123/","wbank_kxd_sdk.apk"); intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive"); startActivity(intent);
留作备用
原文：http://www.cnblogs.com/fengchuxiaodai/p/6213597.html