拍照功能

打开相机：
[cpp] view plaincopy
//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;  
//    }  
    //sourceType = UIImagePickerControllerSourceTypeCamera; //照相机  
    //sourceType = UIImagePickerControllerSourceTypePhotoLibrary; //图片库  
    //sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum; //保存的相片  
    UIImagePickerController *picker = [[UIImagePickerController alloc] init];//初始化  
    picker.delegate = self;  
    picker.allowsEditing = YES;//设置可编辑  
    picker.sourceType = sourceType;  
    [self presentModalViewController:picker animated:YES];//进入照相界面  
    [picker release];  


打开相册：
for iphone：
[cpp] view plaincopy
UIImagePickerController *pickerImage = [[UIImagePickerController alloc] init];  
    if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {  
        pickerImage.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;  
        //pickerImage.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;  
        pickerImage.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:pickerImage.sourceType];  
          
    }  
    pickerImage.delegate = self;  
    pickerImage.allowsEditing = NO;  
    [self presentModalViewController:pickerImage animated:YES];  
    [pickerImage release];