Question

屏幕方向有问题。基本上我要做的是确定确切的屏幕方向（包括反向横向和反向纵向）。我在下面编写方法为我做这件事，它似乎在我的Transformer上工作得很好但是当我在模拟器上启动相同的代码时，有些东西搞砸了。

基本上发生的事情是，无论何时在模拟器中我根据文档切换到横向（ROTATION_90）它应该是反向横向（例如在Transformer with ROTATION_90设备上是反向纵向的，如Android文档所述）。不幸的是，在模拟器上由于某种原因它似乎是正常的横向模式。

所以我的问题是下面的代码正确，问题在于它。或者我可能没有考虑其他一些参数（比如仿真器几乎没有启用加速度计）。

public static int getDeviceCurrentOrientation() {

    WindowManager lWindowManager = (WindowManager) getContext()
            .getSystemService(Activity.WINDOW_SERVICE);

    Configuration cfg = getContext().getResources().getConfiguration();
    int lRotation = lWindowManager.getDefaultDisplay().getRotation();

    int rotation1;
    int orientation;

    rotation1 = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;
    if (cfg.orientation == Configuration.ORIENTATION_LANDSCAPE)
        rotation1 = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
    else if (cfg.orientation == Configuration.ORIENTATION_PORTRAIT)
        rotation1 = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
    else
        rotation1 = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;

    switch (lRotation) {
    case Surface.ROTATION_0:
        orientation = 0;
        break;
    case Surface.ROTATION_90:
        orientation = 1;
        break;
    case Surface.ROTATION_180:
        orientation = 2;
        break;
    case Surface.ROTATION_270:
        orientation = 3;
        break;
    default:
        orientation = -1;
    }

    if ((orientation == 0)
            && (rotation1 == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE))
        return ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;

    if ((orientation == 0)
            && (rotation1 == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT))
        return ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;

    if ((orientation == 1)
            && (rotation1 == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT))
        return ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;

    if ((orientation == 1)
            && (rotation1 == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE))
        return ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;

    if ((orientation == 2)
            && (rotation1 == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT))
        return ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;

    if ((orientation == 2)
            && (rotation1 == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE))
        return ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;

    if ((orientation == 3)
            && (rotation1 == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT))
        return ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;

    if ((orientation == 3)
            && (rotation1 == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE))
        return ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;

    return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;
}

Answer 1

我有类似的问题，经过几个小时的嘎吱嘎吱...... 我找到了this nice solution >>

Display display = getWindowManager().getDefaultDisplay();
int rotation = display.getRotation();

Point size = new Point();
display.getSize(size);

int lock = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;

if (rotation == Surface.ROTATION_0
        || rotation == Surface.ROTATION_180) {
    // if rotation is 0 or 180 and width is greater than height, we have
    // a tablet
    if (size.x > size.y) {
        if (rotation == Surface.ROTATION_0) {
            lock = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
        } else {
            lock = ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
        }
    } else {
        // we have a phone
        if (rotation == Surface.ROTATION_0) {
            lock = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
        } else {
            lock = ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
        }
    }
} else {
    // if rotation is 90 or 270 and width is greater than height, we
    // have a phone
    if (size.x > size.y) {
        if (rotation == Surface.ROTATION_90) {
            lock = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
        } else {
            lock = ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
        }
    } else {
        // we have a tablet
        if (rotation == Surface.ROTATION_90) {
            lock = ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
        } else {
            lock = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
        }
    }
}

在Android 2.2+中检测屏幕方向

1 个答案: