Android:暂时禁用活动中的方向更改

时间:2010-08-31 17:11:27

标签: android screen-orientation android-orientation

我的主要活动有一些代码可以进行一些不应该被中断的数据库更改。我正在另一个线程中进行繁重的工作,并使用我设置为不可取消的进度对话框。但是,我注意到如果我旋转手机,它会重新启动对正在运行的进程非常不好的活动,并且我会收到强制关闭。

我想要做的是以编程方式禁用屏幕方向更改,直到我的流程完成,此时方向更改已启用。

17 个答案:

答案 0 :(得分:160)

正如克里斯在self-answer中所解释的那样,打电话

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_NOSENSOR);

然后

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);

在真实设备上真的像魅力一样!

在模拟器上进行测试时,不要认为它已经坏了,ctrl + F11快捷键总是会改变屏幕方向,而不会模拟传感器移动。

编辑:这不是最好的答案。正如评论中所解释的,这种方法存在问题。 The real answer is here

答案 1 :(得分:41)

其他答案都没有完全适合我,但这就是我发现的。

将方向锁定为当前......

if(getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
} else setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

当再次允许更改方向时,请设置回默认值...

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);

答案 2 :(得分:35)

这是一个更加完整和最新的解决方案,适用于API 8+,适用于反向纵向和横向,并适用于“自然”方向为横向的Galaxy选项卡(调用activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED)解锁方向):

@SuppressWarnings("deprecation")
@SuppressLint("NewApi")
public static void lockActivityOrientation(Activity activity) {
    Display display = activity.getWindowManager().getDefaultDisplay();
    int rotation = display.getRotation();
    int height;
    int width;
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB_MR2) {
        height = display.getHeight();
        width = display.getWidth();
    } else {
        Point size = new Point();
        display.getSize(size);
        height = size.y;
        width = size.x;
    }
    switch (rotation) {
    case Surface.ROTATION_90:
        if (width > height)
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        else
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
        break;
    case Surface.ROTATION_180:
        if (height > width)
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
        else
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
        break;          
    case Surface.ROTATION_270:
        if (width > height)
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
        else
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        break;
    default :
        if (height > width)
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        else
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
    }
}

答案 3 :(得分:17)

为了管理反向模式,我使用该代码来修复活动方向:

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

    switch(rotation) {
    case Surface.ROTATION_180:
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
        break;
    case Surface.ROTATION_270:
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);         
        break;
    case  Surface.ROTATION_0:
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        break;
    case Surface.ROTATION_90:
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        break;
    }

再次允许方向:

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);

答案 4 :(得分:16)

使用setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LOCKED); 锁定当前方向,无论是横向还是纵向。

使用setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);解锁方向。

答案 5 :(得分:14)

我找到了答案。要执行此操作,您可以在活动中使用此处指定的值之一调用setRequestedOrientation(int)http://developer.android.com/reference/android/R.attr.html#screenOrientation

在开始我的线程之前,我调用了setRequestedOrientation(OFF)(OFF = nosensor),当线程完成时,我调用了setRequestedOrientation(ON)(ON =传感器)。像魅力一样。

答案 6 :(得分:10)

谢谢大家。我修改了Pilot_51的解决方案,以确保我恢复到以前的状态。我还进行了一项改动,以支持非横向和非纵向屏幕(但尚未在这样的屏幕上进行测试)。

prevOrientation = getRequestedOrientation();
if(getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
} else if(getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
} else {
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_NOSENSOR);
}

然后恢复它

setRequestedOrientation(prevOrientation);

答案 7 :(得分:5)

protected void setLockScreenOrientation(boolean lock) {
    if (Build.VERSION.SDK_INT >= 18) {
        setRequestedOrientation(lock?ActivityInfo.SCREEN_ORIENTATION_LOCKED:ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR);
        return;
    }

    if (lock) {
        switch (getWindowManager().getDefaultDisplay().getRotation()) {
            case 0: setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); break; // value 1
            case 2: setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT); break; // value 9
            case 1: setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); break; // value 0
            case 3: setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE); break; // value 8
        }
    } else
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR); // value 10
}

答案 8 :(得分:5)

这是一个解决方案,每次都有效并保留当前方向(例如,使用Activity.Info.SCREEN_ORIENTATION_PORTRAIT设置为0°,但用户可以将180°方向作为当前方向)。

// Scope: Activity

private void _lockOrientation() {
    if (super.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
        super.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_USER_PORTRAIT);
    } else {
        super.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_USER_LANDSCAPE);
    }
}

private void _unlockOrientation() {
    super.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
}

答案 9 :(得分:1)

这对我来说很完美。它解决了平板电脑/手机不同“自然定位”的问题;)

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

        Configuration config = getResources().getConfiguration();
        int naturalOrientation;

        if (((rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_180) &&
                config.orientation == Configuration.ORIENTATION_LANDSCAPE)
                || ((rotation == Surface.ROTATION_90 || rotation == Surface.ROTATION_270) &&
                config.orientation == Configuration.ORIENTATION_PORTRAIT)) {
            naturalOrientation = Configuration.ORIENTATION_LANDSCAPE;
        } else {
            naturalOrientation = Configuration.ORIENTATION_PORTRAIT;
        }

        // because getRotation() gives "rotation from natural orientation" of device (different on phone and tablet)
        // we need to update rotation variable if natural orienation isn't 0 (mainly tablets)
        if (naturalOrientation == Configuration.ORIENTATION_LANDSCAPE)
            rotation = ++rotation % 4;

        switch (rotation) {
            case Surface.ROTATION_0: //0
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
                break;
            case Surface.ROTATION_90: //1
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
                break;
            case Surface.ROTATION_180: //2
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
                break;
            case Surface.ROTATION_270: //3
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
                break;
        }
    } else {
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
    }

答案 10 :(得分:1)

如果只想在设备上启用屏幕,则使用ActivityInfo.SCREEN_ORIENTATION_USER

答案 11 :(得分:0)

我认为这段代码更容易阅读。

private void keepOrientation() {

    int orientation = getResources().getConfiguration().orientation;
    int rotation = getWindowManager().getDefaultDisplay().getRotation();

    switch (rotation) {
        case Surface.ROTATION_0:
            if (orientation == Configuration.ORIENTATION_PORTRAIT) {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
            } else {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
            }
            break;
        case Surface.ROTATION_90:
            if (orientation == Configuration.ORIENTATION_PORTRAIT) {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
            } else {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
            }
            break;
        case Surface.ROTATION_180:
            if (orientation == Configuration.ORIENTATION_PORTRAIT) {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
            } else {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
            }
            break;
        default:
            if (orientation == Configuration.ORIENTATION_PORTRAIT) {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
            } else {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
            }
    }
}

答案 12 :(得分:0)

我发现需要结合现有的旋转/方向值来涵盖四种可能性;有纵向/横向值和设备的自然方向。假设当屏幕处于“自然”纵向或横向时,设备的自然方向将具有0度的旋转值。类似地,当它在横向或纵向时将有90度的旋转值(注意它与方向@ 0度相反)。因此,不是0度或90度的旋转值将意味着“反向”方向。好的,这是一些代码:

public enum eScreenOrientation 
{
PORTRAIT (ActivityInfo.SCREEN_ORIENTATION_PORTRAIT),
LANDSCAPE (ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE),
PORTRAIT_REVERSE (ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT),
LANDSCAPE_REVERSE (ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE),
UNSPECIFIED_ORIENTATION (ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);

    public final int activityInfoValue;

    eScreenOrientation ( int orientation )
    {
        activityInfoValue = orientation;
    }
}



public eScreenOrientation currentScreenOrientation ( )
{
    final int rotation = ((WindowManager) getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getRotation();

    final int orientation = getResources().getConfiguration().orientation;
    switch ( orientation ) 
    {
    case Configuration.ORIENTATION_PORTRAIT:
        if ( rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_90 )
            return eScreenOrientation.PORTRAIT;
        else
            return eScreenOrientation.PORTRAIT_REVERSE;
    case Configuration.ORIENTATION_LANDSCAPE:
        if ( rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_90 )
            return eScreenOrientation.LANDSCAPE;
        else
            return eScreenOrientation.LANDSCAPE_REVERSE;
    default:
        return eScreenOrientation.UNSPECIFIED_ORIENTATION;
    }
}

public void lockScreenOrientation ( )
    throws UnsupportedDisplayException
{
    eScreenOrientation currentOrientation = currentScreenOrientation( );
    if ( currentOrientation == eScreenOrientation.UNSPECIFIED_ORIENTATION )
        throw new UnsupportedDisplayException("Unable to lock screen - unspecified orientation");
    else
        setRequestedOrientation( currentOrientation.activityInfoValue );
}

public void unlockScreenOrientation (  )
{
    setRequestedOrientation( ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED );
}

答案 13 :(得分:0)

我想出了一个解决方案,它取决于显示器旋转,然后决定设备的方向。从了解方向,我们可以锁定方向,并在需要时稍后释放方向。此解决方案还可以确定设备是否处于反向横向模式。

private void lockOrientation(){
    switch (((WindowManager) getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getRotation()) {


        // Portrait
        case Surface.ROTATION_0:
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
            break;


        //Landscape     
        case Surface.ROTATION_90: 
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
            break;


        // Reversed landscape
        case Surface.ROTATION_270:
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);             
            break;
    }
}

然后如果我们需要释放方向,我们可以调用此方法:

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);

答案 14 :(得分:0)

我不喜欢这里的大多数答案,因为在解锁时他们将其设置为来自于以前状态的非正式。 ProjectJourneyman确实考虑到了这一点,这很棒,但我更喜欢Roy的锁定代码。所以,我的推荐是两者的混合:

private int prevOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;

private void unlockOrientation() {
    setRequestedOrientation(prevOrientation);
}

@SuppressWarnings("deprecation")
@SuppressLint("NewApi")
private void lockOrientation() {
    prevOrientation = getRequestedOrientation();
    Display display = getWindowManager().getDefaultDisplay();
    int rotation = display.getRotation();
    int height;
    int width;
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB_MR2) {
        height = display.getHeight();
        width = display.getWidth();
    } else {
        Point size = new Point();
        display.getSize(size);
        height = size.y;
        width = size.x;
    }
    switch (rotation) {
        case Surface.ROTATION_90:
            if (width > height)
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
            else
                setRequestedOrientation(9/* reversePortait */);
            break;
        case Surface.ROTATION_180:
            if (height > width)
                setRequestedOrientation(9/* reversePortait */);
            else
                setRequestedOrientation(8/* reverseLandscape */);
            break;
        case Surface.ROTATION_270:
            if (width > height)
                setRequestedOrientation(8/* reverseLandscape */);
            else
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
            break;
        default :
            if (height > width)
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
            else
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
    }
}

答案 15 :(得分:0)

您可以使用

public void swapOrientaionLockState(){
    try{
        if (Settings.System.getInt(mContext.getContentResolver(), Settings.System.ACCELEROMETER_ROTATION) == 1) {
            Display defaultDisplay = ((WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
            Settings.System.putInt(mContext.getContentResolver(), Settings.System.USER_ROTATION, defaultDisplay.getRotation());
            Settings.System.putInt(mContext.getContentResolver(), Settings.System.ACCELEROMETER_ROTATION, 0);
        } else {
            Settings.System.putInt(mContext.getContentResolver(), Settings.System.ACCELEROMETER_ROTATION, 1);
        }

        Settings.System.putInt(mContext.getContentResolver(), Settings.System.ACCELEROMETER_ROTATION, !orientationIsLocked() ? 1 : 0);

    } catch (Settings.SettingNotFoundException e){
        e.printStackTrace();
    }
}

public boolean orientationIsLocked(){
    if(canModifiSetting(mContext)){
        try {
            return Settings.System.getInt(mContext.getContentResolver(), Settings.System.ACCELEROMETER_ROTATION) == 0;
        } catch (Settings.SettingNotFoundException e) {
            e.printStackTrace();
        }
    }
    return false;
}

public static boolean canModifiSetting(Context context){
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        return Settings.System.canWrite(context);
    } else {
        return true;
    }
}

答案 16 :(得分:-1)

使用那行代码

this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);  

在你的活动oncreate方法