Set iOS device orientation programmatically. How?

bogong

Hello all!
Is there any way in QT set the device orientation programmatically or by force?

Gerhard

Hello,
add the following entry in the .plist file
<key>UISupportedInterfaceOrientations</key>
<array>
<string>UIInterfaceOrientationPortrait</string>
<string>UIInterfaceOrientationPortraitUpsideDown</string>
</array>

Gerhard
(sorry for my english)

bogong

@Gerhard The key word in my message PROGRAMMATICALLY OR BY FORCE. It's mean from code, not from application settings.

J.Hilk

@bogong you'll need to call objective c code, but it should be possible

from here:

UIInterfaceOrientation currentOrientation = [UIApplication sharedApplication].statusBarOrientation;
NSNumber *value = [NSNumber numberWithInt:UIInterfaceOrientationPortrait];
[[UIDevice currentDevice] setValue:value forKey:@"orientation"];    
[UIViewController attemptRotationToDeviceOrientation];

bogong

@J-Hilk I know it. I've tried it. The orientation after this code detecting like you set. But QML interface not redrawing. It's working perfectly when I am using it in native Objective-C/Swift but QML interface not redrawing even appeared signal about changed orientation. Only after phisical changing orientation it's wrking. I've already spent 2 weeks for finding cause of it.

bogong

@J-Hilk but never the less - thx for reply. If, not if, when I get success with it - will publish example. Going to get next iteration of this issue tomorrow.

jiang_chao

Hello,I have encountered the same problem. May I ask if this problem has been resolved? I am unable to modify the device orientation of IOS

TheoSys

@bogong This is what I did for my program:

NSArray *array = [[[UIApplication sharedApplication] connectedScenes] allObjects];
UIWindowScene *scene = (UIWindowScene *)array[0];
UIWindowSceneGeometryPreferencesIOS *geometryPreferences = [[UIWindowSceneGeometryPreferencesIOS alloc] initWithInterfaceOrientations:value];
[scene requestGeometryUpdateWithPreferences:geometryPreferences errorHandler:^(NSError * _Nonnull error) { NSLog(@"%@", error); }];

Where value is one of

UIInterfaceOrientationMaskLandscapeRight
UIInterfaceOrientationMaskLandscapeLeft
UIInterfaceOrientationMaskPortrait
UIInterfaceOrientationMaskPortraitUpsideDown

Hope this helps.

A.T.

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