[英]Problems in iPhone camera overelay image orientation
UIImageView *imgView = [[UIImageView alloc] initWithFrame:CGRectMake(dragger.frame.origin.x, dragger.frame.origin.y,dragger.frame.size.width, dragger.frame.size.height)] ;
imgView.image = dragger.image;
overlayView = [[UIView alloc] initWithFrame:CGRectMake(dragger.frame.origin.x,dragger.frame.origin.y,dragger.frame.size.width, dragger.frame.size.height)];
[overlayView addSubview:imgView];
//open the camera
self.picker = [[UIImagePickerController alloc] init];
self.picker.delegate = self;
self.picker.sourceType = UIImagePickerControllerSourceTypeCamera;
self.picker.cameraOverlayView=overlayView;
[self.navigationController presentModalViewController:self.picker animated:YES];
這在縱向模式下工作正常,但在橫向模式下覆蓋圖像不會改變。
我需要幫助時如何實現?
您需要注冊以更改方向...像這樣
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(orientationChanged:)
name:@"UIDeviceOrientationDidChangeNotification"
object:nil];
然后在同一個類中編寫此函數。
- (void) orientationChanged:(NSNotification *)notification{
UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation];
//do stuff
if (orientation==UIDeviceOrientationPortrait) {
imagePickerController.cameraOverlayView = portraitImageView;
}
else if(orientation==UIDeviceOrientationLandscapeLeft)
{
imagePickerController.cameraOverlayView = landscapeImageView;
}
}
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