屏幕方向鎖定

Question

是否有一種可靠的方法可以在所有 Android 設備上鎖定屏幕方向？ 下面的代碼適用於我的 Nexus S 和其他手機，但由於某種原因，ROTATION_90 對應於 Xoom 上的 SCREEN_ORIENTATION_REVERSE_PORTRAIT。

有沒有辦法可靠地 map 旋轉到方向？

private void lockScreenOrientation() {
    if (!mScreenOrientationLocked) {
        final int orientation = getResources().getConfiguration().orientation;
        final int rotation = getWindowManager().getDefaultDisplay().getOrientation();

        if (rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_90) {
            if (orientation == Configuration.ORIENTATION_PORTRAIT) {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
            }
            else if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
            }
        }
        else if (rotation == Surface.ROTATION_180 || rotation == Surface.ROTATION_270) {
            if (orientation == Configuration.ORIENTATION_PORTRAIT) {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
            }
            else if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
            }
        }

        mScreenOrientationLocked = true;
    }
}

private void unlockScreenOrientation() {
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
    mScreenOrientationLocked = false;
}

編輯：此代碼旨在獲取當前方向並將其鎖定。 方向被暫時鎖定，然后釋放給用戶。

Answer 1

這是我的解決方案，它適用於任何 Android SDK 的手機和平板電腦。

switch (getResources().getConfiguration().orientation){
        case Configuration.ORIENTATION_PORTRAIT:
            if(android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.FROYO){
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
            } else {
                int rotation = getWindowManager().getDefaultDisplay().getRotation();
                if(rotation == android.view.Surface.ROTATION_90|| rotation == android.view.Surface.ROTATION_180){
                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
                } else {
                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
                }
            }   
        break;

        case Configuration.ORIENTATION_LANDSCAPE:
            if(android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.FROYO){
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
            } else {
                int rotation = getWindowManager().getDefaultDisplay().getRotation();
                if(rotation == android.view.Surface.ROTATION_0 || rotation == android.view.Surface.ROTATION_90){
                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
                } else {
                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
                }
            }
        break;
    }

Answer 2

我稍微修改了 diyism 的答案，以彌補您在 2.3 版之前不能使用 reverse_landscape 和 reverse_portrait 模式的事實

private static void disableRotation(Activity activity)
{       
    final int orientation = activity.getResources().getConfiguration().orientation;
    final int rotation = activity.getWindowManager().getDefaultDisplay().getOrientation();

    // Copied from Android docs, since we don't have these values in Froyo 2.2
    int SCREEN_ORIENTATION_REVERSE_LANDSCAPE = 8;
    int SCREEN_ORIENTATION_REVERSE_PORTRAIT = 9;

    if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.FROYO)
    {
        SCREEN_ORIENTATION_REVERSE_LANDSCAPE = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
        SCREEN_ORIENTATION_REVERSE_PORTRAIT = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
    }

    if (rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_90)
    {
        if (orientation == Configuration.ORIENTATION_PORTRAIT)
        {
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        }
        else if (orientation == Configuration.ORIENTATION_LANDSCAPE)
        {
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        }
    }
    else if (rotation == Surface.ROTATION_180 || rotation == Surface.ROTATION_270) 
    {
        if (orientation == Configuration.ORIENTATION_PORTRAIT) 
        {
            activity.setRequestedOrientation(SCREEN_ORIENTATION_REVERSE_PORTRAIT);
        }
        else if (orientation == Configuration.ORIENTATION_LANDSCAPE) 
        {
            activity.setRequestedOrientation(SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
        }
    }
}

private static void enableRotation(Activity activity)
{
    activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
}

Answer 3

對於臨時屏幕鎖定，您可以輕松使用：

//developing for android tablets **<uses-sdk android:minSdkVersion="12" />**
//works perfectly... **WATCH OUT**: look portrait to reverse-portrait on api level 13 :)

currentActivity.setRequestedOrientation(currentActivity.getResources().getConfiguration().orientation);

//to re-enable sensor, just do:

currentActivity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);

在顯示對話框和做重要的后台工作期間將其用於臨時屏幕鎖定..

確保 currentActivity 在您嘗試訪問它時有效，否則它將無法工作:)

祝你好運：）

Answer 4

// Works on all devices. The other solution only works on 1/2 of the devices.
// Lock orientation
int rotation = getWindowManager().getDefaultDisplay().getRotation();
lockOrientation(rotation, Surface.ROTATION_270);
// Ensure that the rotation hasn't changed
if (getWindowManager().getDefaultDisplay().getRotation() != rotation) {
    lockOrientation(rotation, Surface.ROTATION_90);
}
// ...
private void lockOrientation(int originalRotation, int naturalOppositeRotation) {
    int orientation = getResources().getConfiguration().orientation;
    if (orientation == Configuration.ORIENTATION_PORTRAIT) {
        // Are we reverse?
        if (originalRotation == Surface.ROTATION_0 || originalRotation == naturalOppositeRotation) {
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        } else {
            setReversePortrait();
        }
    } else {
        // Are we reverse?
        if (originalRotation == Surface.ROTATION_0 || originalRotation == naturalOppositeRotation) {
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        } else {
            setReverseLandscape();
        }
    }
}

@SuppressLint("InlinedApi") 
private void setReversePortrait() {
    if (Build.VERSION.SDK_INT >= 9) {
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
    } else {
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
    }
}

@SuppressLint("InlinedApi") 
private void setReverseLandscape() {
    if (Build.VERSION.SDK_INT >= 9) {
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
    } else {
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
    }
}

Answer 5

此解決方案僅建立在其他解決方案之上。 這是處理 enl8enmentnow 解決的問題的另一種方法：在某些設備上，景觀是ROTATION_90 ，但在（少數）其他設備上是ROTATION_270 。 當我在 Kindle Fire HD 7" 上嘗試類似 enl8enmentnow 的解決方案時，它使屏幕倒轉，然后立即返回。除了硬編碼哪些設備認為橫向為 270 之外，我沒有看到其他想法，所以這就是硬編碼解決方案：

public static void unlockOrientation() {

    activity.setRequestedOrientation(
        ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
}

public static void lockOrientation() {

    if (Build.VERSION.SDK_INT < 18) {
        activity.setRequestedOrientation(getOrientation());
    } else {
        activity.setRequestedOrientation(
            ActivityInfo.SCREEN_ORIENTATION_LOCKED);
    }
}

private static int getOrientation() {

    int port = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
    int revP = ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
    int land = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
    int revL = ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
    if (Build.VERSION.SDK_INT < 9) {
        revL = land;
        revP = port;
    } else if (isLandscape270()) {
        land = ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
        revL = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
    }

    Display display = activity.getWindowManager().getDefaultDisplay();
    boolean wide = activity.getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE;
    switch (display.getRotation()) {
        case Surface.ROTATION_0:
            return wide ? land : port;
        case Surface.ROTATION_90:
            return wide ? land : revP;
        case Surface.ROTATION_180:
            return wide ? revL : revP;
        case Surface.ROTATION_270:
            return wide ? revL : port;
        default:
            throw new AssertionError();
    }
}

private static boolean isLandscape270() {

    return android.os.Build.MANUFACTURER.equals("Amazon")
        && !(android.os.Build.MODEL.equals("KFOT") || android.os.Build.MODEL.equals("Kindle Fire"));
}

isLandscape270()檢測設備是否為第二代 Kindle 或更高版本（請參閱此鏈接，從此 鏈接獲取MODEL ）。 我不知道是否還應該包括其他設備； 如果您知道，請發表評論。

此外，在 API >= 18 上，這僅使用setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LOCKED) 。 我只在模擬器上測試過； 如果在真實設備上出現問題，請發表評論。

Answer 6

使用： setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR)因為方向由物理方向傳感器確定：顯示器將根據用戶移動設備的方式旋轉。 這允許 4 種可能的旋轉中的任何一種，而不管設備通常會做什么（例如，某些設備通常不會使用 180 度旋轉）。 而且您的代碼也應該可以在 Xoom 上運行...

Answer 7

您可以在 AndroidManifest.xml 中將 Activity 聲明為僅橫向或縱向。 只需將 screenOrientation 屬性添加到活動元素：

http://developer.android.com/guide/topics/manifest/activity-element.html

Answer 8

我的解決方案：

int orientation=act.getResources().getConfiguration().orientation;
int rotation=act.getWindowManager().getDefaultDisplay().getOrientation();
if (orientation==Configuration.ORIENTATION_PORTRAIT)
   {if (rotation==Surface.ROTATION_0 || rotation==Surface.ROTATION_270) //0 for phone, 270 for tablet
       {act.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
       }
    else
        {act.setRequestedOrientation(9);//instead of SCREEN_ORIENTATION_REVERSE_PORTRAIT when <= android 2.2
        }
   }
else
    {if (rotation==Surface.ROTATION_90 || rotation==Surface.ROTATION_0) //90 for phone, 0 for tablet
        {act.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        }
     else
         {act.setRequestedOrientation(8);//instead of SCREEN_ORIENTATION_REVERSE_LANDSCAPE when <= android 2.2
         }
    }