从本地存储运行安装的apk文件

Question

我正在开发关于apk文件运行的android应用程序。我可以将apk文件下载到我的本地存储但我无法运行此apk文件如何在android中运行已安装的apk文件？我试过下面的代码，但是我收到了一个错误

public class DownloadApkMainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_download_apk_main);

        Intent installIntent = new Intent(Intent.ACTION_VIEW);
        installIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        installIntent.setDataAndType(Uri.parse("/mnt/sdcard/" + "/MyFavorite/"+ "Anket4.apk"), "application/vnd.android.package-archive");
        startActivity(installIntent);
    }


}

Answer 1

而不是

installIntent.setDataAndType(Uri.parse("/mnt/sdcard/" + "/MyFavorite/"+ "Anket4.apk"), "application/vnd.android.package-archive");

试

installIntent.setDataAndType(Uri.fromFile(new File("/mnt/sdcard/" + "/MyFavorite/"+ "Anket4.apk")), "application/vnd.android.package-archive");