android开发代码安装app(需要指定路径)

下载app文件后，使用代码方式安装 app

String s = new String(Environment.getExternalStorageDirectory().getAbsolutePath()

                + "/Download/1.apk");
        LogUtil.i("qq--" + s);
        installApp(s);

//安装app
    private void installApp(String path) {
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.setDataAndType(Uri.parse("file://" + path),
                "application/vnd.android.package-archive");
        startActivity(intent);
    }