標籤:action style 習慣性 蘋果
在iOS8以前,我們都習慣性用UIAlertView去做提示框,iOS8以後,蘋果提倡使用UIAlertController取代UIAlertView。
#define SYSTEM_VERSION [[UIDevice currentDevice].systemVersion floatValue]
if (SYSTEM_VERSION >= 8.0) { UIAlertController *alertCtrl = [UIAlertController alertControllerWithTitle:@"贖回成功" message:nil preferredStyle:UIAlertControllerStyleAlert]; UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"確定" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) { [self.navigationController popViewControllerAnimated:YES]; }]; [alertCtrl addAction:okAction]; [self presentViewController:alertCtrl animated:YES completion:nil]; }else{ //這個else一定要寫,否則會導致在ios8一下的真機crash UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"贖回成功" message:nil delegate:self cancelButtonTitle:nil otherButtonTitles:@"確定", nil]; alert.tag = 998; [alert show]; }
#pragma mark-UIAlertViewDelegate-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{ if (alertView.tag == 998) { [self.navigationController popViewControllerAnimated:YES]; }}
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IOS8以上的UIAlertView