今天遇到一個需求就是在手機橫屏的時候要打開相冊相機，但是在打開的手就報錯，經過一上午的查資料，看文檔，知道了問題所在，原來UIImagePickerController 只支持豎屏

?解決思路

1，讓UIImagePickerController 支持橫屏

2 ，在打開相機的時候讓項目橫豎屏，在關閉相機或者相冊的時候還原 讓項目只支持橫屏。

3 在appdelegate 通過通知來切換屏幕的橫豎屏 - (UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{ return _MyInterfaceOrientationMask; }

appdelegate里面 @property (nonatomic,assign) NSInteger MyInterfaceOrientationMask;- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {// Override point for customization after application launch._MyInterfaceOrientationMask = UIInterfaceOrientationMaskLandscapeRight;[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(changeRotate:) name:@"changeRotate" object:nil];return YES; } - (void)changeRotate:(NSNotification *)noti{if ([noti.object isEqualToString:@"0"]) {_MyInterfaceOrientationMask = UIInterfaceOrientationMaskLandscapeRight;}else{_MyInterfaceOrientationMask = UIInterfaceOrientationMaskAll;} } - (UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{return _MyInterfaceOrientationMask; } view里面 -(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{[[NSNotificationCenter defaultCenter] postNotificationName:@"changeRotate" object:@"1"];ownPickViewController *picker = [[ownPickViewController alloc] init];picker.delegate = self;if (buttonIndex==0) {picker.sourceType = UIImagePickerControllerSourceTypeCamera;[self presentViewController:picker animated:YES completion:nil];}else if(buttonIndex==1) {picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;[self presentViewController:picker animated:YES completion:nil];}}- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{[[NSNotificationCenter defaultCenter] postNotificationName:@"changeRotate" object:@"0"];[picker dismissModalViewControllerAnimated:NO]; } //實現圖片選擇器代理//參數：圖片選擇器 字典參數-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{[[NSNotificationCenter defaultCenter] postNotificationName:@"changeRotate" object:@"0"];//通過key值獲取到圖片 UIImage * image =info[UIImagePickerControllerOriginalImage];NSLog(@"image=%@ info=%@",image, info);//判斷數據源類型if (picker.sourceType == UIImagePickerControllerSourceTypePhotoLibrary) {}}重新的 UIImagePickerController 里面加一個 -(BOOL)shouldAutorotate{ return YES;}

?

轉載于:https://www.cnblogs.com/ZhangShengjie/p/6248772.html

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