Iphone利用UIImagePickerController调用系统照相机

iphone api中提供了调用系统照相机的接口,我们只需调用相应的界面,即刻在自己的程序中获取相机图片.下面是一个非常简单的调用系统照相机的例子.

相应的界面如下:

最后可以编辑图片和使用相应的图片.

 

下面是主要代码:

- (void) addPicEvent
{
    //先设定sourceType为相机，然后判断相机是否可用（ipod）没相机，不可用将sourceType设定为相片库
    UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypeCamera;
    if (![UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera]) {
        sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    }  
    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.delegate = self;
    picker.allowsEditing = YES;
    picker.sourceType = sourceType;
    [self presentModalViewController:picker animated:YES];
    [picker release];
}
- (void)saveImage:(UIImage *)image {
    NSLog(@"保存");
}
#pragma mark –
#pragma mark Camera View Delegate Methods
- (void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info {
    [picker dismissModalViewControllerAnimated:YES];
    UIImage *image = [[info objectForKey:UIImagePickerControllerEditedImage] retain];
    [self performSelector:@selector(saveImage:)
               withObject:image
               afterDelay:0.5];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
    [picker dismissModalViewControllerAnimated:YES];
}