鍦ˋndroid鐨凟xpandableListView涓紝Group鐨勫睍寮€涓庢敹璧风殑鑳屾櫙棰滆壊鍙互閫氳繃璁剧疆Group鐨勮儗鏅壊鎴栦娇鐢╯elector鏉ュ疄鐜般€?/p>

1. 璁剧疆Group鐨勮儗鏅壊锛?/li>

浣犲彲浠ラ€氳繃涓篏roup鐨勫竷灞€鏂囦欢璁剧疆鑳屾櫙鑹叉潵鏀瑰彉Group灞曞紑涓庢敹璧锋椂鐨勮儗鏅鑹层€備緥濡傦紝浣犲彲浠ュ湪Group鐨勫竷灞€鏂囦欢涓娇鐢ㄤ互涓嬬殑浠ｇ爜璁剧疆鑳屾櫙鑹诧細

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#FF0000"  // 璁剧疆鑳屾櫙鑹蹭负绾㈣壊
...>
<!-- Group鐨勫叾浠栧瓙瑙嗗浘 -->
</LinearLayout>

2. 浣跨敤selector璁剧疆鑳屾櫙鑹诧細

浣犱篃鍙互浣跨敤selector鏉ヨ缃瓽roup灞曞紑涓庢敹璧锋椂鐨勮儗鏅鑹诧紝杩欐牱鍙互瀹炵幇Group鍦ㄤ笉鍚岀姸鎬佷笅鏈変笉鍚岀殑鑳屾櫙鑹层€傞鍏堬紝鍒涘缓涓€涓悕涓?code>group_background.xml鐨剆elector鏂囦欢锛岀劧鍚庡湪鍏朵腑璁剧疆Group鍦ㄤ笉鍚岀姸鎬佷笅鐨勮儗鏅鑹层€備緥濡傦細

<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_expanded="true" android:drawable="@color/colorAccent" />  // Group灞曞紑鏃剁殑鑳屾櫙鑹?<item android:state_expanded="false" android:drawable="@color/colorPrimary" />  // Group鏀惰捣鏃剁殑鑳屾櫙鑹?</selector>

鐒跺悗锛屽湪Group鐨勫竷灞€鏂囦欢涓皢杩欎釜selector浣滀负鑳屾櫙璁剧疆缁橤roup鐨勬牴甯冨眬銆備緥濡傦細

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/group_background"  // 璁剧疆鑳屾櫙涓簊elector
...>
<!-- Group鐨勫叾浠栧瓙瑙嗗浘 -->
</LinearLayout>

杩欐牱锛孏roup鍦ㄥ睍寮€涓庢敹璧锋椂浼氭湁涓嶅悓鐨勮儗鏅鑹层€備綘鍙互鏍规嵁鑷繁鐨勯渶姹備慨鏀?code>group_background.xml涓殑棰滆壊鍊笺€?/p>