在 iOS 5 中将 PresentViewController 与 UIImagePickerController 结合使用时，取消按钮显示为禁用状态
当图像选择器控制器首先出现时，“取消”按钮显示为禁用状态并且不起作用，但是当我通过选择相册移动到下一个视图时，“取消”按钮变为启用状态并开始正常工作。
我应该怎样做才能保持“取消”按钮启用并始终有效？
imgPicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary])
{
NSArray *sourceTypes = [UIImagePickerController availableMediaTypesForSourceType:imgPicker.sourceType];
imgPicker.mediaTypes = sourceTypes;
[self presentViewController:imgPicker animated:YES completion:Nil];
}
The Cancel button appears disabled and doesn't work when the image picker controller appears first, but as I move to the next view by selecting an album, the Cancel button becomes enabled and starts working fine.
What should I do to keep the Cancel button enabled and working all the time?
imgPicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary])
{
NSArray *sourceTypes = [UIImagePickerController availableMediaTypesForSourceType:imgPicker.sourceType];
imgPicker.mediaTypes = sourceTypes;
[self presentViewController:imgPicker animated:YES completion:Nil];
}
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你在
UIImagePickerControllerDelegate中实现了这个功能吗？更多参考
Have you implement this function in
UIImagePickerControllerDelegate?More reference