ios return键隐藏虚拟键盘

1:h头文件里 

@interface ViewController : UIViewController<UITextViewDelegate>

继承接口 UITextViewDelegate

 

textviewarea.delegate = self;

 

-(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString*)text  //按return键隐藏虚拟键盘

{  

    if ([text isEqualToString:@"\n"]) {  

        [textView resignFirstResponder];   

        return NO;  

    }  

    returnYES;  

}