由于某种原因,屏幕变暗并冻结,未显示警报...有人可以帮忙吗?
提前致谢!
} else {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Hello!"
message:@"Hello!" delegate:self
cancelButtonTitle:@"Done"
otherButtonTitles:nil];
[alert show];
[alert release];
}
您可能正在打电话show
从后台线程,在主线程上调用它,如下所示:
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Hello!"
message:@"Hello!" delegate:self
cancelButtonTitle:@"Done"
otherButtonTitles:nil];
[alert performSelectorOnMainThread:@selector(show)
withObject:nil
waitUntilDone:NO];
[alert release];
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