Question

我想在我的视图控制器加载时启动相机。我尝试在viewdidload中调用takePhoto方法，但没有任何反应，我做错了什么？我收到以下错误消息：＆＃34;尝试显示其视图不在窗口层次结构中！＆＃34; 当我检查元素UIImagePickerController时，它是零...有趣的是，我可以放置一个调用此方法的按钮，当我点击按钮它工作正常，但不是当我在视图中调用它时加载...

- (IBAction)takePhoto {
UIImagePickerController *uiipc=[[UIImagePickerController alloc]init];
uiipc.delegate=self;
uiipc.mediaTypes=@[(NSString *)kUTTypeImage];
       uiipc.sourceType=UIImagePickerControllerSourceTypeCamera|UIImagePickerControllerSourceTypePhotoLibrary;
uiipc.allowsEditing=YES;
[self presentViewController:uiipc animated:YES completion:NULL];
 }

Answer 1

试试这个：从视图中调用相机确实出现方法：

  //  makeCameraOff= YES;  call this in didFinishPickingMediaWithInfo method

-(void)viewDidAppear:(BOOL)animated{
  if (makeCameraOff==NO){
  [self performSelector:@selector(takePic) withObject:nil afterDelay:0];
 }
 }

-(void)takePic{

UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate =self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;

[self presentViewController:picker animated:YES completion:nil];


}

调用viewdidload中存在的UIImagePickerControler不起作用

1 个答案: