我在我的代码中使用UIImagePickerView
,其中有三个按钮。一键拍照,二键选择照片,三键取消。代码如下:
UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Select the operation to proceed?"
delegate:self
cancelButtonTitle:@"Cancel"
destructiveButtonTitle:nil
otherButtonTitles:@"Take Photo", @"Select Photo", nil];
[actionSheet showInView:self.view];
当我单击“取消”按钮时,它不起作用。
我正在使用 UIImagePickerViewDelegate
方法,如下所示。
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
@try {
//set selected image in imageview by imagepickerview
UIImage *chosenImage = info[UIImagePickerControllerEditedImage];
imgProfilePic.image = chosenImage;
[picker dismissViewControllerAnimated:YES completion:nil];
}
@catch (NSException *exception) {
NSLog(@"%@",exception.description);
}
}
//- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
//{
// NSLog(@"@@@@");
// [picker dismissViewControllerAnimated:YES completion:NULL];
//}
请检查我的 UIImagePickerView
代码,并为我提供正确代码的指导。
#pragma mark - Actionssheet delegate method for Image
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
@try {
if(buttonIndex != 3)
{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
if(buttonIndex == 0)
{
NSLog(@"Choose Photo from Camera");
//simulator has no camera so app will crash, below call just provide the alert that device has no camera.
if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
UIAlertView *myAlertView = [[UIAlertView alloc] initWithTitle:@"Error"
message:@"Device has no camera"
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles: nil];
[myAlertView show];
}
else
{
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
}
}
if(buttonIndex == 1)
{
NSLog(@"Choose Photo from Gallary");
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
}
// if (buttonIndex == 3)
// {
// NSLog(@"###");
// }
//
// else
// {
// NSLog(@"Cancel the tab");
// [picker dismissViewControllerAnimated:YES completion:NULL];
//
// }
[self presentViewController:picker animated:YES completion:nil];
}
}
@catch (NSException *exception) {
NSLog(@"%@",exception.description);
}
}
最佳答案
我认为您是 stackOverflow 和 iOS 应用程序开发的新手。 UIActionsheet
和 UIImagePickerController
都是不同的东西。因此,如果您要创建一个 actiohsheet,例如:
UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Select the operation to proceed?"delegate:self
cancelButtonTitle:@"Cancel"
destructiveButtonTitle:nil otherButtonTitles:@"Take Photo", @"Select Photo", nil];
[actionSheet showInView:self.view];
现在你可以像下面这样调用它的按钮方法:
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex==0)
{
// take photo selected
}
else if (buttonIndex==1)
{
// select photo selected
}
else
{
// cancel button selected
}
}
您还可以使用 UIAlertController
,它是 iOS8 中 UIAlert
和 UIActionSheet
的替代品,因此您可以像下面这样使用:
UIAlertController* AlertSheet = [UIAlertController alertControllerWithTitle:@"New ActionSheet" message:nil preferredStyle:UIAlertControllerStyleActionSheet];
UIAlertAction* defaultAction = [UIAlertAction actionWithTitle:@"Action" style:UIAlertActionStyleDefault //
handler:^(UIAlertAction * action) {
NSLog(@"Action");
}];
[AlertSheet addAction:defaultAction];
UIAlertAction *cancleAction = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
}];
[AlertSheet addAction:cancleAction];
[self presentViewController:AlertSheet animated:YES completion:nil];
关于ios - 取消按钮在 UIImagePickerView 中不起作用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/36123689/