android - 视频无法在 android 中播放

Question

我正在尝试在我的登录屏幕上播放视频。我已经导入了 mp4 视频文件。但是当我运行这段代码时，视频并没有出现在屏幕上。事实上，视频文件显示为 ?? 符号。我是否需要添加其他内容才能播放视频？

<VideoView
  android:id="@+id/videoView1"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  />

Java部分

public VideoView videoView;
    public MediaPlayer mediaPlayer;

    @OnClick(R.id.email_sign_in_button)
    void delegateLogin() {
        progressBar.setVisibility(View.VISIBLE);
       loginPresenter.doLogin(usernameInput.getText().toString(), passwordInput.getText().toString());
    }

    @OnClick(R.id.register_now_button)
    void registerNow(){
        loginPresenter.doOpenRegisterScreen(this);
    }

    @OnClick(R.id.forgot_password_button)
    void forgotPassword(){
        loginPresenter.doOpenForgotPasswordScreen(this);
    }


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        ButterKnife.bind(this);

        videoView=(VideoView)findViewById(R.id.videoView1);

        Uri uri= Uri.parse("android.resource://"
        +getPackageName()
        +"/"
        +R.raw.mt_launch_screen);

        videoView.setVideoURI(uri);
       // videoView.requestFocus();
        videoView.start();

        videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            @Override
            public void onPrepared(MediaPlayer mediaPlayer) {
                mediaPlayer.setLooping(true);
               // mediaPlayer.start();
            }
        });

标签： androidkotlinandroid-videoview

Answer 1

尝试移动videoView.start()

    videoView.setVideoURI(uri);
    // videoView.requestFocus();
    // videoView.start(); /* don't start it if you setOnPrepared? */

    videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
        @Override
        public void onPrepared(MediaPlayer mediaPlayer) {
            videoView.start(); //Start here
            mediaPlayer.setLooping(true);
            // mediaPlayer.start();
        }
    });