UIImagePickerController圖像不變

Question

我使用UIImagePickerController允許用戶從他們的庫中選擇一張照片。然後我想用這個代碼分配選擇的圖像;

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { 
UIImage* image = [info objectForKey:UIImagePickerControllerOriginalImage]; 
[users_pic_ setImage:image]; 
[self dismissModalViewControllerAnimated:YES]; 
} 

但用戶圖片永不改​​變。

users_pic_被定義爲：UIImageView* user_pic_;

任何人注意到有什麼不對嗎？由於

Answer 1

使用此代碼 -

// make sure to allocate users_pic_ 

UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage]; 
users_pic_.image = image; 
[self dismissModalViewControllerAnimated:YES];