iOS imagePicker使用方法，方便使用！三步轻松搞定！

自己总结的修改头像的方法，只为方便自己查询使用！转发

步骤：1、遵守代理协议

<UIImagePickerControllerDelegate,UINavigationControllerDelegate,UIActionSheetDelegate>

2、点击事件{

UIActionSheet *choosePhotoActionSheet;

if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {

choosePhotoActionSheet = [[UIActionSheet alloc] initWithTitle:NSLocalizedString(@"选取图片", @"")

delegate:self

cancelButtonTitle:NSLocalizedString(@"取消", @"")

destructiveButtonTitle:nil

otherButtonTitles:NSLocalizedString(@"相机", @""), NSLocalizedString(@"相册", @""), nil];

} else {

choosePhotoActionSheet = [[UIActionSheet alloc] initWithTitle:NSLocalizedString(@"选取图片", @"")

delegate:self

cancelButtonTitle:NSLocalizedString(@"取消", @"")

destructiveButtonTitle

:nil

otherButtonTitles:NSLocalizedString(@"相册", @""), nil];

}

[choosePhotoActionSheet showInView:self.view];

}

3、实现代理方法

#pragma mark - UIActionSheetDelegate

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

{

NSUInteger sourceType = 0;

if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {

switch (buttonIndex) {

case 0:

sourceType = UIImagePickerControllerSourceTypeCamera;

break;

case 1:

sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

break;

case 2:

return;

}

} else {

if (buttonIndex == 1) {

return;

} else {

sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;

}

}

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

imagePickerController.delegate = self;

imagePickerController.allowsEditing = YES;

imagePickerController.sourceType = sourceType;

[self presentViewController:imagePickerController animated:YES completion:^{

}];

}

#pragma mark - UIImagePickerControllerDelegate

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

{

[self dismissViewControllerAnimated:YES completion:^{

}];

self.tmpHeaderImg = [info objectForKey:UIImagePickerControllerEditedImage];

[self.imageViewUserHead setImage:self.tmpHeaderImg];

[self uploadImage];

}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker

{

[self dismissViewControllerAnimated:YES completion:^{

}];

}