IOS 点击空白处隐藏键盘

回车时（return），自动换行。
点击空白处，隐藏键盘。

- (void)textFieldDidEndEditing:(UITextField *)textField
{
if (textField == TypeField)
{
}
[textField
resignFirstResponder];
}

- (void)textFieldEditingChanged: (UITextField *)textfiled
{
}
- (BOOL)textFieldShouldClear:(UITextField *)textField
{
if (textField == TypeField) {
}
return YES;
}

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
if ([mountField
isFirstResponder])
{
[mountField
resignFirstResponder];
}
if ([AmountField
isFirstResponder])
{
[AmountField
resignFirstResponder];
}
}

- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
if (textField == TypeField) {
}

if (mountField == textField)
{
[mountField
becomeFirstResponder];
}
else if (AmountField == textField)
{
[AmountField
resignFirstResponder];
}
return YES;
}