更改系统相机UIImagePickerController导航栏的cancle为取消按钮

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第一:实现navigationController代理

- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated

{

    UIButton *cusbtn = [[UIButton alloc]initWithFrame:CGRectMake(0,0,50,30)];

    [cusbtn setTitle:@"取消" forState:(UIControlStateNormal)];

    cusbtn.backgroundColor = [UIColor redColor];

    [cusbtn addTarget:self action:@selector(click) forControlEvents:(UIControlEventTouchUpInside)];

    UIBarButtonItem *btn = [[UIBarButtonItem alloc] initWithCustomView:cusbtn];

    [viewController.navigationItem setRightBarButtonItem:btn animated:NO]; 

}

第二:实现click方法即可完成;self.imagePicker为弱引用

@property (nonatomic, weak) UIImagePickerController *imagePicker;

- (void)click{

    [self imagePickerControllerDidCancel:self.imagePicker];

}

更改系统相机UIImagePickerController导航栏的cancle为取消按钮

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原文地址：http://www.cnblogs.com/xsiOS/p/5642846.html