iOS开发 键盘遮挡输入框(TextView、TextField)问题

首先在.h文件中要添加UITextFieldDelegate ,UIGestureRecognizerDelegate,UITextViewDelegate

 这三个协议。

下面是.m文件中的代码

     

- (void)viewDidLoad
{
    [super viewDidLoad];
    //指定本身为代理
    self.textfield.delegate = self;
    self.textView.delegate = self;
    //添加手势，点击屏幕其他区域关闭键盘的操作
    UITapGestureRecognizer *gesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hidenKeyboard)];
    gesture.numberOfTapsRequired = 1;
    gesture.delegate = self;
    [self.view addGestureRecognizer:gesture];

}

//隐藏键盘的方法
-(void)hidenKeyboard
{
    [self.feedBackContent resignFirstResponder];
    [self.feedBackContact resignFirstResponder];
    [self resumeView];
}

//恢复原始视图位置
-(void)resumeView
{
    NSTimeInterval animationDuration=0.30f;
    [UIView beginAnimations:@"ResizeForKeyboard" context:nil];
    [UIView setAnimationDuration:animationDuration];
    float width = self.view.frame.size.width;
    float height = self.view.frame.size.height;
    //如果当前View是父视图，则Y为20个像素高度，如果当前View为其他View的子视图，则动态调节Y的高度
    float Y = 0.0f;
    CGRect rect=CGRectMake(0.0f,Y,width,height);
    self.view.frame=rect;
    [UIView commitAnimations];
}

     解决textview遮挡键盘代码

//UITextView的协议方法，当开始编辑时监听
-(BOOL)textViewShouldBeginEditing:(UITextView *)textView
{
    NSTimeInterval animationDuration=0.30f;
    [UIView beginAnimations:@"ResizeForKeyboard" context:nil];
    [UIView setAnimationDuration:animationDuration];
    float width = self.view.frame.size.width;
    float height = self.view.frame.size.height;
    //上移70个单位，按实际情况设置
    CGRect rect=CGRectMake(0.0f,-70,width,height);
    self.view.frame=rect;
    [UIView commitAnimations];
    return YES;
}

     当然还要恢复屏幕

- (IBAction)textViewDidEndEditing:(UITextView *)textView {
    [self.textview resignFirstResponder];
    [self resumeView];
}

    解决textfield键盘退出代码，当然也要用到上面textviewDidEndEditing

//用于解决textview键盘退出问题
-(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
	{
    	    if ([text isEqualToString:@"\n"]) {
       	        [textView resignFirstResponder];
        	        return NO;
        	    }
    	    return YES; 
    }

    解决textfield遮挡键盘代码

//UITextField的协议方法，当开始编辑时监听
-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
    NSTimeInterval animationDuration=0.30f;
    [UIView beginAnimations:@"ResizeForKeyboard" context:nil];
    [UIView setAnimationDuration:animationDuration];
    float width = self.view.frame.size.width;
    float height = self.view.frame.size.height;
    //上移30个单位，按实际情况设置
    CGRect rect=CGRectMake(0.0f,-180,width,height);
    self.view.frame=rect;
    [UIView commitAnimations];
    return YES;
}

    恢复屏幕，也是textfield键盘退出功能

- (IBAction)textFieldDoneEditing:(id)sender {
    [sender resignFirstResponder];
    [self resumeView];
}