Question

我想找到一个装置的详细方向,最好是一个<代码>。 SCREEN_ORIENTATION_landSCAPE, SCREEN_ORIENTATION_PORTRAIT,SCREEN_ORIENTATION_REVERSE_landSCAPE,SCREEN_ORIENTATION_REVERSE_PORTRAIT from ActactiveInfo

Some of the answers here on StackOverflow included

getWindowManager().getDefaultDisplay().getRotation()

但是,这真的告诉我,该装置是否处于 por形或景观的状态,只是它如何参照其自然状况,而这反过来又可能是地貌或trait。

getResources().getConfiguration().orientation

以下三人之一的回馈:ORIENTATION_landSCAPE,ORIENTATION_PORTRAIT,ORIENTATION_SREQUA, 后一字未真正告诉我,电话的改写方式如何(无论它 s倒,还是取向哪一方)。

我知道,我可以把后者与<代码>DisplayMetrics结合使用,以找出装置的自然取向,但确实没有更好的办法?

Answer 1

I ended up using the following solution:

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;
}

http://www.ohchr.org。一些用户(下文评论中的Geltrude和holtaf)指出,这一解决办法不会在所有装置上发挥作用,因为从自然取向的轮换方向没有标准化。

Answer 2

简单办法是使用

getResources().getConfiguration().orientation

1 用于波特,2 用于景观。

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

我认为,你的问题是,你可以发现景观和漏洞,但不会扭转地貌和逆境,因为老的景象没有支持。发现你可以做的是,你可以同时使用ein和轮换。我给你一个想法,这或许对你有用。

试图这样做,即认为它可能解决你的问题。

            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 5

。然而,如果它没有满足你的需要,那么你或许会利用传感器从角度计算。 http://www.ibm.com/developerworks/opensource/library/os-android-传感器/“rel=”_this 和

Answer 6

I ended up using Zoltán s answer above, which works great, except when I tried it on a tablet (a Samsung P6210 Galaxy Tab 7.0 Plus). In portrait mode, it returned SCREEN_ORIENTATION_REVERSE_PORTRAIT. So in the else statement (if natural orientation is landscape) I swapped the cases for ROTATION_90 and ROTATION_270, and everything seems to work fine. (I don t have enough reputation to post this as a comment to Zoltán s answer.)

Answer 7

You could do it in a very simple way: get the screen widhtand height. screen width will be always higher when device is in landscape orientation.

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

这是否解决了你的问题?

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
}

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