Question

我需要检测设备的方向，因为我已经在下面编写了代码。但是我无法获得方向。这是我在MainActivity中的oncreate（）... 如果我需要更改任何内容，请告诉我

protected void onCreate(Bundle savedInstanceState) 
{
    super.onCreate(savedInstanceState);

    mOrientationListener = new OrientationEventListener(getApplicationContext()) 
    {
        @Override
        public void onOrientationChanged(int orientation) 
        {
            if(orientation == 0)
            {
                setContentView(R.layout.activity_main_portrait);
            }
            else
            {
                setContentView(R.layout.activity_main_landscape);
            }
        }
    };
    if (mOrientationListener.canDetectOrientation()) 
    {          
        mOrientationListener.enable();
    }

    mImgPreview = (ImageView) findViewById(R.id.imgpreview);
    mVideoPreview = (ImageView) findViewById(R.id.videopreview);
    mAudioPreview = (ImageView) findViewById(R.id.audiopreview);

    /*-------Intent to view Image Gallery---------*/
    mImgPreview.setOnClickListener(new OnClickListener() 
    {
        @Override
        public void onClick(View v) 
        {
            Intent intent = new Intent(getApplicationContext(), ImageList.class);
            startActivity(intent);
        }
    });

    /*-------Intent to view Video Gallery---------*/
    mVideoPreview.setOnClickListener(new OnClickListener() 
    {
        @Override
        public void onClick(View v) 
        {
            Intent intent = new Intent(getApplicationContext(), Video.class);
            startActivity(intent);
        }
    });

    /*--------Intent to view Audio Gallery--------*/
    mAudioPreview.setOnClickListener(new OnClickListener() 
    {

        @Override
        public void onClick(View v) 
        {
            Intent intent = new Intent(getApplicationContext(), AudioPlayer.class);
            startActivity(intent);
        }
    });
}

//提前致谢

Answer 1

您需要启用侦听器才能使其正常工作。

OrientationEventListener mOrientationListener = new OrientationEventListener(
                getApplicationContext()) {
    @Override
    public void onOrientationChanged(int orientation) {
        if (orientation == 0 || orientation == 180) {
            Toast.makeText(getApplicationContext(), "portrait",
                            Toast.LENGTH_LONG).show();
        } else if (orientation == 90 || orientation == 270) {
            Toast.makeText(getApplicationContext(), "landscape",
                            Toast.LENGTH_LONG).show();
        }
    }
};

if (mOrientationListener.canDetectOrientation()) {          
    mOrientationListener.enable();
}

这对我来说很好。

希望它有所帮助。

Answer 2

使用这个......

 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);

  Configuration config = getResources().getConfiguration();

  if (config.orientation == Configuration.ORIENTATION_LANDSCAPE) {
             // setContentView 1 here
  }else{
             // setContentView 2 here
  }

}

在onCreate（）函数中编写此代码，因为Activity在方向更改期间从启动开始循环。

没有在android中使用OrientationEventListener获取方向

2 个答案: