Question

我正试图做到这一点，以便当我单击图像框时，播放的视频应停止线程并开始播放新视频。目前，它给了我一个“ IllegalStateException”异常。

我如何才能停止话题并开始制作新的视频？

public class VideoActivity extends AppCompatActivity {

VideoView videoView;
MediaController mController;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_video);
    playVideo("android.resource://"+ getPackageName() + "/" + R.raw.introductie);
}

protected void onClick(View v)
{
    videoView.stopPlayback();
    switch(v.getId())
    {
        case R.id.imageView2:

            playVideo("android.resource://"+ getPackageName() + "/" + R.raw.introductie);
            break;
        case R.id.imageView3:
            playVideo("android.resource://"+ getPackageName() + "/" + R.raw.wel_iets_aan_de_hand3);
            break;
        case R.id.imageView4:
            playVideo("android.resource://"+ getPackageName() + "/" + R.raw.hoe_moet_je_plassen4);
            break;
        case R.id.imageView5:
            playVideo("android.resource://"+ getPackageName() + "/" + R.raw.wanneer_moet_je_plassen5);
            break;
        case R.id.imageView6:
            playVideo("android.resource://"+ getPackageName() + "/" + R.raw.hoe_haak_moet_je_plassen6);
            break;
        case R.id.imageView7:
            playVideo("android.resource://"+ getPackageName() + "/" + R.raw.piponormaalvrachtwagens7);
            break;
        case R.id.imageView8:
            playVideo("android.resource://"+ getPackageName() + "/" + R.raw.pipoobstipatievrachtwagens8);
            break;
    }
}
protected void playVideo(String videoName)
{
    videoView = findViewById(R.id.videoViewId);
    mController = new MediaController(this);
    videoView.setVideoPath(videoName);
    mController.setAnchorView(videoView);
    videoView.setMediaController(mController);
    videoView.start();
}

}

9-06 09:55:21.163 7107-7107/com.example.nepalibinod.catherina E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.nepalibinod.catherina, PID: 7107
java.lang.IllegalStateException: Could not find method videoOne(View) in a parent or ancestor Context for android:onClick attribute defined on view class android.support.v7.widget.AppCompatImageView with id 'imageView2'

Answer 1

尝试在代码（Java / Kotlin）而不是XML中定义OnClick侦听器。我假设发生的是您在XML内的按钮上分配了android:onClick，但是android在代码内找不到您的方法。

尝试findViewById设置视图，并为其分配一个‍ setOnClickListener。

单击图像视图后开始播放新视频

1 个答案: