我想創建this one推在推客般的按鈕,雖然我的代碼有一點不同:推後一個按鈕,它的標題消失
UIButton* alertsButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
alertsButton.frame = CGRectMake(170, 43.5, 130, 130);
[alertsButton.titleLabel setFont:[UIFont fontWithName:@"Novecento wide" size:22]];
[alertsButton setTitle:NSLocalizedString(@"Alerts", nil) forState:UIControlStateHighlighted];
[alertsButton setTitle:NSLocalizedString(@"Alerts", nil) forState:UIControlStateNormal];
[alertsButton setTitle:NSLocalizedString(@"Alerts", nil) forState:UIControlStateSelected];
[alertsButton addTarget:self action:@selector(toggleAlerts:)forControlEvents:UIControlEventTouchUpInside];
-(void)toggleAlerts:(id)sender
{
UIButton *button = (UIButton *)sender;
if (button.selected) {
button.selected = NO;
[button setImage:[UIImage imageNamed:@"off.png"] forState:UIControlStateNormal];
[button.titleLabel setFont:[UIFont fontWithName:@"Novecento wide" size:22]];
NSLog(button.titleLabel.text);
} else {
button.selected = YES;
[button setImage:[UIImage imageNamed:@"on.png"] forState:UIControlStateNormal];
[button.titleLabel setFont:[UIFont fontWithName:@"Novecento wide" size:22]];
NSLog(button.titleLabel.text);
}
}
當我按下按鈕,背景會按預期更改,但標籤會消失,儘管文本顯示在調試控制檯中。我試圖this沒有結果:(