iOS－UIActionSheet的简单使用和调用系统相簿

实现UIActionSheetDelegate

UIActionSheet *menu = [[UIActionSheet alloc]

initWithTitle: @""

delegate:self

cancelButtonTitle:@"Cancel"

destructiveButtonTitle:nil

otherButtonTitles:@"图库相册",@"拍照", nil];

[menu showInView:self.view];

# pragma mark UIActionSheet method

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex

{

if (buttonIndex==0) {

[self photoalbumr];//图库相册

}else if(buttonIndex==1){

[self photocamera];//拍照

}else if(buttonIndex==2){

}

[actionSheet release];

}

调用系统的相簿

实现UIImagePickerControllerDelegate

-(void)photoalbumr{

if ([UIImagePickerController isSourceTypeAvailable:

UIImagePickerControllerSourceTypePhotoLibrary]) {

UIImagePickerController *picker =

[[UIImagePickerController alloc] init];

picker.delegate = self;

picker.allowsImageEditing = YES;

picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

[self presentModalViewController:picker animated:YES];

[picker release];

}

else {

UIAlertView *alert = [[UIAlertView alloc]

initWithTitle:@"Error accessing photo library"

message:@"Device does not support a photo library"

delegate:nil

cancelButtonTitle:@"Drat!"

otherButtonTitles:nil];

[alert show];

[alert release];

}

}

-(void)photocamera{

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{

UIImagePickerController* imagepicker = [[UIImagePickerController alloc] init];

imagepicker.delegate = self;

imagepicker.sourceType = UIImagePickerControllerSourceTypeCamera;

imagepicker.modalTransitionStyle = UIModalTransitionStyleCoverVertical;

imagepicker.allowsEditing = YES;

[self presentModalViewController:imagepicker animated:YES];

}

else {

UIAlertView *alert = [[UIAlertView alloc]

initWithTitle:@"Sorry"

message:@"设备不支持拍照功能"

delegate:nil

cancelButtonTitle:@"确定"

otherButtonTitles:nil];

[alert show];

[alert release];

}

}

#pragma mark UIImagePicker method

- (void)imagePickerController:(UIImagePickerController *)picker

didFinishPickingImage:(UIImage *)image

editingInfo:(NSDictionary *)editingInfo

{

/*将图片存储到document下

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask, YES);

NSString *documentsDirectory = [paths objectAtIndex:0];

NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:@"savedImage.png"];

NSData *imageData = UIImagePNGRepresentation(image);

[imageData writeToFile:savedImagePath atomically:NO];

_imgName=@"savedImage.png";

self._imgFilePath=documentsDirectory;

*/

[addPhoto setBackgroundImage:image forState:UIControlStateNormal];

[picker dismissModalViewControllerAnimated:YES];

}

// 完成选取

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker

{

[picker dismissModalViewControllerAnimated:YES];

}