UITextView

 _textView = [[UITextViewalloc]init];

        _textView.backgroundColor = [UIColorwhiteColor];

        _textView.delegate =self;

        [cell.contentViewaddSubview:_textView];

        [_textViewmas_makeConstraints:^(MASConstraintMaker *make) {

            make.edges.mas_equalTo(0);

        }];

        _placeholdeView = [[UIImageViewalloc]initWithImage:[UIImageimageNamed:@"bottlefive.png"]];

        [cell.contentViewaddSubview:_placeholdeView];

        [_placeholdeViewmas_makeConstraints:^(MASConstraintMaker *make) {

            make.left.mas_equalTo(10);

            make.bottom.mas_equalTo(-10);

            make.size.mas_equalTo(CGSizeMake(282/3,282/3));

        }];

        _addView = [[UIImageViewalloc]initWithImage:[UIImageimageNamed:@"[e-mail]"]];

        [_addViewaddTapGestureRecognizerWith:selfaction:@selector(clickaddView:)];

        [cell.contentViewaddSubview:_addView];

        [_addViewmas_makeConstraints:^(MASConstraintMaker *make) {

            make.left.mas_equalTo(_placeholdeView.mas_right).offset(10);

            make.bottom.mas_equalTo(-10);

        }];

   _placeholerLabel = [[UILabelalloc]initWithFrame:CGRectMake(0,0, 100,40)];

        _placeholerLabel.textAlignment =NSTextAlignmentLeft;

        _placeholerLabel.font = [UIFontsystemFontOfSize:14];

        _placeholerLabel.text =@"请输入内容";

        [_textViewaddSubview:_placeholerLabel];

-(void)textViewDidChange:(UITextView *)textView{

    if (textView.text.length ==0) {

        _placeholerLabel.text =@"请输入内容";

    }

    else{

        _placeholerLabel.text=@"";

    }

}