[英]How to update UILabel?
.h文件:
@property (strong, nonatomic) IBOutlet UILabel *frequencyDetailLabel;
.m文件:
-(void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
//LOCALIZATION
..
self.frequencyDetailLabel.text = NSLocalizedString(@"Select", nil);
}
然后在我的代码后面,我尝试更改文本:
self.frequencyDetailLabel.text = NSLocalizedString(@"Done", nil);
我到目前为止所做的事情:
IBOutlet
连接正常工作。 textcolor
并成功了。 UILabel
为null / nil,不是。 还有什么我应该尝试的?
编辑:
展开方法
- (IBAction)unwindFromFrequencyViewController:(UIStoryboardSegue *)segue {
if ([segue.sourceViewController isKindOfClass:[FrequencyTableViewController class]]) {
FrequencyTableViewController *frequencyViewController = segue.sourceViewController;
// if the user clicked Cancel, we don't want to set a frequency (skips code)
if (frequencyViewController.frequency) {
NSLog(@"THIS RAN");
self.howOften = frequencyViewController.frequency;
if ([frequencyViewController.frequency intValue] == 1) {
NSLog(@"THIS RAN1");
self.frequencyDetailLabel.text = @"Every day";
return;
} else {
NSLog(@"THIS RAN2");
self.frequencyDetailLabel.text = NSLocalizedString(@"Done", nil);
}
}
}
}
在另一个问题中找到解决方案: UILabel文本未更新
dispatch_async(dispatch_get_main_queue(), ^{
[self.someLabel setText:someString];
});
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