判断横竖屏。http://www.cocoachina.com/ask/questions/show/121301
//self.cameraView是相机view
- (NSUInteger)supportedInterfaceOrientations
{
UIInterfaceOrientation e = [[UIApplication sharedApplication] statusBarOrientation];
if (e == UIInterfaceOrientationLandscapeLeft) {
if (self.cameraView) {
self.cameraView.transform = CGAffineTransformMakeRotation((-270 * M_PI) / 180.0f);
}
}else if (e == UIInterfaceOrientationLandscapeRight) {
if (self.cameraView) {
self.cameraView.transform = CGAffineTransformMakeRotation((270 * M_PI) / 180.0f);
}
}
return (UIInterfaceOrientationMaskLandscape);
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
//m_bScreen是bool 型，判断横竖屏。
if ([[[UIDevice currentDevice]systemVersion ]floatValue] >= 8.0) {
BOOL m_bScreen = NO;
UIInterfaceOrientation e = [[UIApplication sharedApplication] statusBarOrientation];
if (e == UIInterfaceOrientationLandscapeLeft) {
m_bScreen = NO;
}else if (e == UIInterfaceOrientationLandscapeRight) {
m_bScreen = YES;
}
if ([[UIDevice currentDevice] respondsToSelector:@selector(setOrientation:)]) {
NSNumber *num = [[NSNumber alloc] initWithInt:(m_bScreen?UIInterfaceOrientationLandscapeRight:UIInterfaceOrientationLandscapeLeft)];
[[UIDevice currentDevice] performSelector:@selector(setOrientation:) withObject:(id)num];
[UIViewController attemptRotationToDeviceOrientation];//这行代码是关键
}
SEL selector=NSSelectorFromString(@"setOrientation:");
NSInvocation *invocation =[NSInvocation invocationWithMethodSignature:[UIDevice instanceMethodSignatureForSelector:selector]];
[invocation setSelector:selector];
[invocation setTarget:[UIDevice currentDevice]];
int val =m_bScreen?UIInterfaceOrientationLandscapeRight:UIInterfaceOrientationLandscapeLeft;
[invocation setArgument:&val atIndex:2];
[invocation invoke];
}
}
获取相机view的方法：
#pragma mark UINavigationControllerDelegate
- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated{
if ([[[UIDevice currentDevice]systemVersion ]floatValue] >= 8.0) {
UIView *PLCameraView=[self findView:viewController.view withName:@"PLImagePickerCameraView"];
NSArray *svarray = [PLCameraView subviews];
self.imagePickerController.cameraView = svarray[0];
for (int i = 1; i < svarray.count; i++) { //i: 0 相机 1 拍照界面 2 重拍界面
if (i == 1) {
NSArray *arr = [svarray[1] subviews];
for (int i = 0; i < arr.count; i++) {
if (i == 9) { //i: 1 前置摄像头切换
[[arr objectAtIndex:i] setAlpha:0.0f];
}
}
}
}
}else if ([[[UIDevice currentDevice]systemVersion ]floatValue] >= 7.0) {
UIView *PLCameraView=[self findView:viewController.view withName:@"PLCameraView"];
NSArray *svarray = [PLCameraView subviews];
for (int i = 1; i < svarray.count; i++) { //i: 0 相机 1 拍照界面 2 重拍界面
if (i == 1) {
NSArray *arr = [svarray[1] subviews];
for (int i = 0; i < arr.count; i++) {
if (i == 1) { //i: 1 前置摄像头切换
[[arr objectAtIndex:i] setAlpha:0.0f];
}
}
}
}
}
}
#pragma mark get/show the UIView we want
//Find the view we want in camera structure.
-(UIView *)findView:(UIView *)aView withName:(NSString *)name{
Class cl = [aView class];
NSString *desc = [cl description];
if ([name isEqualToString:desc])
return aView;
for (NSUInteger i = 0; i < [aView.subviews count]; i++)
{
UIView *subView = [aView.subviews objectAtIndex:i];
subView = [self findView:subView withName:name];
if (subView)
return subView;
}
return nil;
}
时间： 2024-08-08 11:17:24