Question

我想了解设备的详细方向，最好是来自SCREEN_ORIENTATION_LANDSCAPE的{{1}}，SCREEN_ORIENTATION_PORTRAIT，SCREEN_ORIENTATION_REVERSE_LANDSCAPE，SCREEN_ORIENTATION_REVERSE_PORTRAIT或同等设备之一

StackOverflow上的一些答案包括

ActivityInfo

但这并没有真正告诉我这个设备是处于纵向还是横向模式，只是它是如何根据其自然位置进行转动的 - 这反过来可以是风景或肖像。

getWindowManager().getDefaultDisplay().getRotation()

返回以下三种中的一种：getResources().getConfiguration().orientation，ORIENTATION_LANDSCAPE，ORIENTATION_PORTRAIT，然后它并没有真正告诉我手机的转向方式（无论是颠倒还是哪个它转向的两侧。）

我知道我可以结合ORIENTATION_SQUARE使用后者来找出设备的自然方向，但是真的没有更好的方法吗？

Answer 1

我最终使用了以下解决方案：

private int getScreenOrientation() {
    int rotation = getWindowManager().getDefaultDisplay().getRotation();
    DisplayMetrics dm = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(dm);
    int width = dm.widthPixels;
    int height = dm.heightPixels;
    int orientation;
    // if the device's natural orientation is portrait:
    if ((rotation == Surface.ROTATION_0
            || rotation == Surface.ROTATION_180) && height > width ||
        (rotation == Surface.ROTATION_90
            || rotation == Surface.ROTATION_270) && width > height) {
        switch(rotation) {
            case Surface.ROTATION_0:
                orientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
                break;
            case Surface.ROTATION_90:
                orientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
                break;
            case Surface.ROTATION_180:
                orientation =
                    ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
                break;
            case Surface.ROTATION_270:
                orientation =
                    ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
                break;
            default:
                Log.e(TAG, "Unknown screen orientation. Defaulting to " +
                        "portrait.");
                orientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
                break;              
        }
    }
    // if the device's natural orientation is landscape or if the device
    // is square:
    else {
        switch(rotation) {
            case Surface.ROTATION_0:
                orientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
                break;
            case Surface.ROTATION_90:
                orientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
                break;
            case Surface.ROTATION_180:
                orientation =
                    ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
                break;
            case Surface.ROTATION_270:
                orientation =
                    ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
                break;
            default:
                Log.e(TAG, "Unknown screen orientation. Defaulting to " +
                        "landscape.");
                orientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
                break;              
        }
    }

    return orientation;
}

注意：有些用户（下面评论中的Geltrude和holtaf）指出，此解决方案不适用于所有设备，因为自然方向的旋转方向未标准化。

Answer 2

简单的方法是使用

getResources().getConfiguration().orientation

1表示纵向，2表示横向。

Answer 3

public static int getScreenOrientation(Activity activity) {
        int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
        int orientation = activity.getResources().getConfiguration().orientation;
        if (orientation == Configuration.ORIENTATION_PORTRAIT) {
          if (rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_270) {
            return ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
          } else {
            return ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
          }
        }
        if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
          if (rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_90) {
            return ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
          } else {
            return ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
          }
        }
        return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;
      }

Answer 4

getResources().getConfiguration().orientation是了解当前使用方向的标准方式。但是，如果它不能满足您的需求，那么也许您可以使用传感器以角度计算它。阅读this和this

Answer 5

我认为您的问题是您可以检测横向和纵向，但不能反转横向和反转版本，因为旧版本不支持它们。要检测你可以做的是你可以使用oreintation和rotation。我想你可能对你有用。

尝试这个我认为它可以解决你的问题。

            int orientation = getResources().getConfiguration().orientation;
            int rotation = getWindowManager().getDefaultDisplay().getRotation();
            int actual_orientation = -1;
            if (orientation == Configuration.ORIENTATION_LANDSCAPE
            &&  (rotation == Surface.ROTATION_0 
            ||  rotation == Surface.ROTATION_90)){
                orientation = Configuration.ORIENTATION_LANDSCAPE;
            } else if (orientation == Configuration.ORIENTATION_PORTRAIT
                  &&  (rotation == Surface.ROTATION_0 
                   ||  rotation == Surface.ROTATION_90)) {
                orientation = Configuration.ORIENTATION_PORTRAIT;
            } else if (orientation == Configuration.ORIENTATION_LANDSCAPE
                  &&  (rotation == Surface.ROTATION_180 
                   ||  rotation == Surface.ROTATION_270)){
                orientation = //any constant for reverse landscape orientation;
            } else {
                if (orientation == Configuration.ORIENTATION_PORTRAIT
                        &&  (rotation == Surface.ROTATION_180 
                         ||  rotation == Surface.ROTATION_270)){
                      orientation = //any constant for reverse portrait orientation;
                }
            }

Answer 6

我最终使用Zoltán上面的答案，除非我在平板电脑（三星P6210 Galaxy Tab 7.0 Plus）上试用它，否则效果很好。在纵向模式下，它返回SCREEN_ORIENTATION_REVERSE_PORTRAIT。所以在else语句中（如果自然方向是横向）我交换了ROTATION_90和ROTATION_270的情况，一切似乎都运行正常。（我没有足够的声誉将此作为对Zoltán答案的评论发布。）

Answer 7

你可以用一种非常简单的方式做到这一点：获取屏幕widht和height。当设备处于横向时，屏幕宽度将始终更高。

Display display = getWindowManager().getDefaultDisplay();
    int width = display.getWidth(); 
    int height = display.getHeight();
    Toast.makeText(getApplicationContext(), "" + width + "," + height,
            Toast.LENGTH_SHORT).show();
    if (width > height) {
        Toast.makeText(getApplicationContext(), "LandScape",
                Toast.LENGTH_SHORT).show();
    }

Answer 8

这会解决您的问题吗？

public static int getscrOrientation(Activity act)
{
    Display getOrient = act.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 = act.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 defineitly
                            // be landscape
                    orientation = Configuration.ORIENTATION_LANDSCAPE;
                }
            }
        }
    }
    return orientation; // return value 1 is portrait and 2 is Landscape
                        // Mode
}

如何获取Android设备的CURRENT方向（ActivityInfo.SCREEN_ORIENTATION_ *）？

8 个答案: