iOS收起键盘

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
    
    /** 放弃第一响应者*/
    [self.nameTextField resignFirstResponder];
    /** 放弃第一响应者*/
    [[UIApplication sharedApplication] sendAction:@selector(resignFirstResponder) to:nil from:nil forEvent:nil];
    
    /** 强制结束编辑状态*/
    [self.view endEditing:YES];
    /** 强制结束编辑状态*/
    [[[UIApplication sharedApplication] keyWindow] endEditing:YES];

}