android - 获取 Android 设备的方向

Question

您会认为会有一个直接的解决方案。 Android 文档状态:

The orientation sensor was deprecated in Android 2.2 (API level 8). Instead of using raw data from the orientation sensor, we recommend that you use the getRotationMatrix() method in conjunction with the getOrientation() method to compute orientation values.

然而，他们没有提供关于如何实现 getOrientation() 和 getRotationMatrix() 的解决方案。我花了几个小时阅读了这里关于开发人员使用这些方法的帖子，但他们都有部分粘贴的代码或一些奇怪的实现。谷歌搜索没有提供教程。有人可以粘贴一个使用这两种方法生成方向的简单解决方案吗？？

Answer 1

这是 getOrientation() 的实现:

public int getscrOrientation()
    {
        Display getOrient = getWindowManager().getDefaultDisplay();

        int orientation = getOrient.getOrientation();

        // Sometimes you may get undefined orientation Value is 0
        // simple logic solves the problem compare the screen
        // X,Y Co-ordinates and determine the Orientation in such cases
        if(orientation==Configuration.ORIENTATION_UNDEFINED){

            Configuration config = getResources().getConfiguration();
            orientation = config.orientation;

            if(orientation==Configuration.ORIENTATION_UNDEFINED){
                //if height and widht of screen are equal then
                // it is square orientation
                if(getOrient.getWidth()==getOrient.getHeight()){
                    orientation = Configuration.ORIENTATION_SQUARE;
                }else{ //if widht is less than height than it is portrait
                    if(getOrient.getWidth() < getOrient.getHeight()){
                        orientation = Configuration.ORIENTATION_PORTRAIT;
                    }else{ // if it is not any of the above it will definitely be landscape
                        orientation = Configuration.ORIENTATION_LANDSCAPE;
                    }
                }
            }
        }
        return orientation; // return value 1 is portrait and 2 is Landscape Mode
    }

你也可以引用这个例子，它代表了这两种方法的使用:

     getOrientation and getRotationMatrix

http://www.codingforandroid.com/2011/01/using-orientation-sensors-simple.html