UIImageWriteToSavedPhotosAlbum問題

Question

我嘗試使用按鈕拍攝照片後從相機保存照片。

這裏是我的代碼：

-(IBAction)savePhoto{ 

    UIImageWriteToSavedPhotosAlbum(img.image, nil, nil);  

} 

-(IBAction)takePic { 

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

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

    img.image = [info objectForKey:UIImagePickerControllerOriginalImage]; 

    [[picker parentViewController]dismissModalViewControllerAnimated:YES]; 
    [picker release]; 
} 

，但我不知道爲什麼犯規保存任何東西！

Answer 1

我懷疑你保存它之前，你的形象被釋放：

img.image = [info objectForKey:UIImagePickerControllerOriginalImage];

線之上返回一個自動釋放的對象。我建議你保留下圖所示的圖像，然後在保存圖像時將其釋放。

img.image = [[info objectForKey:UIImagePickerControllerOriginalImage] retain];

Answer 2

檢索圖像後調用[self savePhoto]在-imagePickerController:didFinishPickingMediaWithInfo:。