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旧版提示框
UIAlertView *alt=[[UIAlertView alloc]initWithTitle:@"友情提示" message:@"是否是成年人" delegate:self cancelButtonTitle:@"不满足" otherButtonTitles:@"满足", nil]; alt.delegate=self; [alt show];
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UIAlertView获取按钮的点击事件需要使用代理的方式,代理类为:UIAlertViewDelegate。然后实现其方法,即可获取按钮的点击事件。
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{ NSLog(@"%ld",buttonIndex);}
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底部提示框
UIActionSheet *sheet=[[UIActionSheet alloc] initWithTitle:@"请选择城市" delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:@"北京" otherButtonTitles:@"上海", nil]; [sheet showInView:self.view];
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与上述提示框类似,代理为:UIActionSheetDelegate,点击的代理方法如下:
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{}
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新版提示框
UIAlertController *controller=[UIAlertController alertControllerWithTitle:@"友情提示" message:@"是否购买" preferredStyle:UIAlertControllerStyleAlert];UIAlertAction *act1=[UIAlertAction actionWithTitle:@"买" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { }];UIAlertAction *act2=[UIAlertAction actionWithTitle:@"不买" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { }]; [controller addAction:act1]; [controller addAction:act2]; [self presentViewController:controller animated:YES completion:^{ }];
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此提示框需要使用控件触发弹出。
新版ActionSheet
UIAlertController *controller=[UIAlertController alertControllerWithTitle:@"选择" message:@"请选择" preferredStyle:UIAlertControllerStyleActionSheet]; UIAlertAction *act1=[UIAlertAction actionWithTitle:@"买" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { }]; UIAlertAction *act2=[UIAlertAction actionWithTitle:@"不买" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { }]; [controller addAction:act1]; [controller addAction:act2]; [self presentViewController:controller animated:YES completion:^{ }];
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取消提示框
[self dismissViewControllerAnimated:YES completion:^{ }];
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