UIAlertView上添加输入框UITextField

UIAlertView上添加输入框UITextField

1、初始化UIAlertView，并添加UITextField

 UIAlertView *exitAlertView=[[UIAlertView alloc]initWithTitle:@"退出原因" message:nil delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];

        exitAlertView.alertViewStyle=UIAlertViewStylePlainTextInput;

        UITextField *reasonField=[exitAlertView textFieldAtIndex:0];

        reasonField.placeholder=@"请输入退出原因";

        [exitAlertView show];

2、在UIAlertView的代理方法中为确定按钮添加点击事件（前提记得添加UIAlertViewDelegate）

#pragma mark - UIAlertViewDelegate

//为按钮添加点击事件

-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{

    

    NSLog(@" button index=%ld is clicked.....", buttonIndex);

    UITextField *reasonField = [alertView textFieldAtIndex:0]; 

    //_reasonStr 为全局变量的Nsstring,获取UITextField中的输入值 

    _reasonStr=reasonField.text;

    //buttonIndex为1是确定按钮

    if (buttonIndex == 1) {

        //调用接口

        [self postQuitTravel];

        [reasonField resignFirstResponder];

    }

    else{

        [reasonField resignFirstResponder];

        

    }

}