ExpandableLayout

android ExpandableLayout能够让子View隐藏和展开，伸缩菜单

<attr name="titleHeight" format="dimension" />
<attr name="titleBgColor" format="color" />
<attr name="titleName" format="string" />
<attr name="titleNameColor" format="color" />
<attr name="titleNameSize" format="dimension|reference" />
<attr name="titleIcon" format="reference" />

<attr name="animDuration" format="integer" />
<attr name="expandDrawable" format="reference" />
<attr name="collapseDrawable" format="reference" />
<attr name="isCollapse" format="boolean" />

<attr name="mtextRight" format="string" localization="suggested" />
<attr name="mtextRightColor" format="color" />
<attr name="mtextRightSize" format="dimension" />
<attr name="mdisplayArrow" format="boolean" />
<attr name="mdisplaySwitch" format="boolean" />
<attr name="mdividerVisibility" format="boolean" />

属性	释义
titleHeight	title高度
titleBgColor	title背景色
titleName	title标题
titleNameColor	title标题颜色
titleNameSize	title标题字体大小
titleIcon	title图标
animDuration	收缩动画时间
expandDrawable	title展开时右图标
collapseDrawable	title折叠时右图标
isCollapse	title是否折叠
mtextRight	title右标题
mtextRightColor	title右标题颜色
mtextRightSize	title右标题字体大小
mdisplayArrow	是否显示右图标
mdisplaySwitch	是否显示开关
mdividerVisibility	是否显示分割线

监听展开与折叠

expandableLayout.setOnExpandStateChangeListener(new ExpandableLayout.OnExpandStateChangeListener() {

        @Override
        public void onExpandStateChanged(boolean isExpanded) {
            if (isExpanded) {
                Toast.makeText(MainActivity.this, "展开", Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(MainActivity.this, "折叠", Toast.LENGTH_SHORT).show();
            }
        }
});

动态添加子VIEW

TextView textView = new TextView(this);
textView.setTextSize(28);
textView.setText("O(∩_∩)O哈哈~");
textView.setGravity(Gravity.CENTER);
textView.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 300));
expandableLayout2.addView(textView);