修改TextView的placeholder

Posted 2022-12-13 建古

修改TextView的placeholder使用runtime 使用kvc

- (void)setupTextView

    // _placeholderLabel
    UILabel *placeHolderLabel = [[UILabel alloc] init];
    placeHolderLabel.text = @"请输入您宝贵的意见或建议。（200字以内）";
    placeHolderLabel.numberOfLines = 0;
    placeHolderLabel.textColor = [UIColor lightGrayColor];
    placeHolderLabel.font = [UIFont systemFontOfSize:14];
    [placeHolderLabel sizeToFit];
    [self.contentTextView addSubview:placeHolderLabel];
    [self.contentTextView setValue:placeHolderLabel forKey:@"_placeholderLabel"];