iOS 横屏调用相册

问题:最近在iPad开发中遇到的一个调用相册的横竖屏问题,正常调用相册不管iPad是横竖屏,开启的相册都是竖屏的---不多说直接上代码

解决:给UIImagePickerViewController写一个category 实现以下代码

#import<UIKit/UIKit.h>

@interface UIImagePickerController (MyImagePicker)

- (BOOL)shouldAutorotate;

- (NSUInteger)supportedInterfaceOrientations;

@end

#import "UIImagePickerController+MyImagePicker.h"

@implementation UIImagePickerController (MyImagePicker)

- (BOOL)shouldAutorotate {

return YES;

}

- (NSUInteger)supportedInterfaceOrientations{

return UIInterfaceOrientationMaskLandscape;

}

@end

然后-->开启相册的时候通知Appdelegate,实现UIInterfaceOrientationMask=UIInterfaceOrientationMaskAll 如下代码

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

_myInterfaceOrientation = UIInterfaceOrientationMaskLandscape;

[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(changeDirection:) name:@"changeDirection" object:nil];

return YES;

}

- (void)dealloc{

[[NSNotificationCenter defaultCenter] removeObserver:self];

}

- (void)changeDirection:(NSNotification *)notice{

if ([notice.object isEqualToString:@"0"]) {

_myInterfaceOrientation = UIInterfaceOrientationMaskLandscapeRight;

}else{

_myInterfaceOrientation = UIInterfaceOrientationMaskAll;

}

}

- (UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{

return _myInterfaceOrientation;

}

最后-->(代码思路,如果有相同之处,不是故意为之)以下是demo地址:demo