iPhone相機和圖像選擇器

Question

我發現了很多關於使用UIImagePickerController讓用戶從照片應用程序的數據中選擇他們想要的圖像的信息。我想知道如何在3.0上創建相同的效果，因爲它看起來好像很多舊的代碼工作了。另外，我希望用戶能夠從相同的彈出窗口中拍攝新照片。

感謝您的幫助！

Answer 1

工作在3.0，與以前相同;我不相信有任何改變。我剛分配/初始化一個的UIImagePickerController，並將它傳遞給presentModalViewController，像這樣：

- (void) chooseImageFromLibrary { 
    if(![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) return; 

    UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init]; 
    imagePickerController.delegate = self; 
    imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; 
    imagePickerController.allowsImageEditing = YES; 
    [self presentModalViewController:imagePickerController animated:YES]; 
} 

- (void) chooseImageFromCamera { 
    if(![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) return; 

    UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init]; 
    imagePickerController.delegate = self; 
    imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera; 
    imagePickerController.allowsImageEditing = YES; 
    [self presentModalViewController:imagePickerController animated:YES]; 
} 

實現委託方法，太：

- (void)imagePickerController:(UIImagePickerController *)picker 
     didFinishPickingImage:(UIImage *)image 
        editingInfo:(NSDictionary *)editingInfo { 
    // Do something with the image here. 

    [[picker parentViewController] dismissModalViewControllerAnimated:YES]; 
} 

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker { 
    [[picker parentViewController] dismissModalViewControllerAnimated:YES]; 
}