我正在分析需要一些时间的图像,同时我想显示一个进度指示器。为此,我使用 MBProgressHUD。
它几乎可以工作......我收到此错误:“正在修改正在完成的图层”。我想这是因为我做 pushViewController 不在我的主线程中。我对吗?关于如何纠正这个问题的任何想法?
我的代码:
- (IBAction)buttonReadSudoku:(id)sender
{
mbProgress=[[MBProgressHUD alloc] initWithView:self.view];
mbProgress.labelText=@"Läser Sudoku";
[self.view addSubview:mbProgress];
[mbProgress setDelegate:self];
[mbProgress showWhileExecuting:@selector(readSudoku) onTarget:self withObject:nil animated:YES];
}
- (void)readSudoku
{
UIImage *image = imageView.image;
image = [ImageHelpers scaleAndRotateImage:image];
NSMutableArray *numbers = [SudokuHelpers ReadSudokuFromImage:image];
sudokuDetailViewController = [[SudokuDetailViewController alloc] init];
[sudokuDetailViewController setNumbers:numbers];
[[self navigationController] pushViewController:sudokuDetailViewController animated:YES];
}