self.textField = [[UITextField alloc] initWithFrame:CGRectMake(50, 292, 50, 40)];
[self.textField becomeFirstResponder];
self.textField.delegate = self;
[self.view addSubview:self.textField];


UIButton *topViewonTextField = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, ScreenWidth, ScreenHeight)];
topViewonTextField.backgroundColor = [UIColor clearColor];
[topViewonTextField setEnabled:NO];
//topViewonTextField.layer.zPosition = 100;
[self.view addSubview:topViewonTextField];