Android开发技巧：TextView内容管理与优化-优快云博客

本文链接：https://blog.youkuaiyun.com/sumakira/article/details/7425423

1. 判断一个String是否为空时候，string.length > 1 比string != "" 好用～原因不知～～反正用length解决了～

2, android:fillViewport="true" on theScrollView. scrollview 必须要设置这个为true,才能扩展内部的部件显示出来

3, 点击textview，展开更多内容的方法。

3 down vote

Actually, the way android platform does that is by setting the MaxLine to Integer.MAX_VALUE.

textView.setMaxLines(Integer.MAX_VALUE);

also, if you are using Ellipsize, don't forget to set to null.

textView.setEllipsize(null);

just check how the android framework do just that ;) watch the setMaxLines(Integer.MAX_VALUE);

private void applySingleLine(boolean singleLine, boolean applyTransformation) {
    mSingleLine = singleLine;
    if (singleLine) {
        setLines(1);
        setHorizontallyScrolling(true);
        if (applyTransformation) {
            setTransformationMethod(SingleLineTransformationMethod.getInstance());
        }
       } else {
            setMaxLines(Integer.MAX_VALUE);
            setHorizontallyScrolling(false);
            if (applyTransformation) {
                 setTransformationMethod(null);
        }
       }
     }