不指定maxLines的TextView中的省略号文本 [英] Ellipsize text in TextView without specifying maxLines

问题描述

我有一个TextView，其高度将根据屏幕中的其他组件而变化.我在此TextView中设置了一个长文本，因此我想将其省略.简单地指定android:ellipsize ="end"不起作用.仅在与maxLines一起指定时，椭圆化起作用.但是我无法为maxLines指定值，因为TextView的高度是动态的.如何在不为TextView指定maxLines的情况下将文本椭圆化?

I have a TextView whose height would vary based on the other components in the screen. I have a long text to be set in this TextView and hence I would like to ellipsize it. Simply specifying android:ellipsize="end" is not working. Only on specifying maxLines along with it, the ellipsizing works. But I cannot specify a value for maxLines since the height of TextView is dynamic. How do I get the text ellipsized without specifying maxLines for the TextView?

推荐答案

我通过添加全局布局侦听器找到了解决该问题的方法.以下是代码段

I found the solution to the problem by adding global layout listener. Following is the code snippet

tvDesc.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {
            tvDesc.getViewTreeObserver().removeOnGlobalLayoutListener(this);
            int noOfLinesVisible = tvDesc.getHeight() / tvDesc.getLineHeight();

            tvDesc.setText(R.string.desc);

            tvDesc.setMaxLines(noOfLinesVisible);
            tvDesc.setEllipsize(TextUtils.TruncateAt.END);

        }
    });

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