经常遇到这样的需求,一个listView 的某一个 item 按下去变色,弹起后 颜色保持,然后按其他的item变色,弹起后保持,与此同时前一个点击的item颜色恢复。实现不难,这里整理一下 :
1 首先是 定义 item的 selector \drawable\listview_item_pressed.xml
[html]
<?xml version="1.0" encoding="UTF-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_pressed="true"
android:drawable="@drawable/listview_item_selected_bg" />
<item
android:state_pressed="false"
android:drawable="@drawable/listview_unseleceted" />
</selector>
2 把selector 添加入 item ,这里采用的是 添加进 item 采用的布局文件中
[html]
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:background="@drawable/listview_item_pressed"
android:orientation="horizontal"
android:layout_height="56dp">...
[java]
convertView.setTag(position);
convertView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(oldView == null){
//第一次点击
oldView = v;
v.setBackgroundDrawable(mContext.getResources().getDrawable(R.drawable.listview_item_selected_bg));
}else{
//非第一次点击
//把上一次点击的 变化
oldView.setBackgroundDrawable(mContext.getResources().getDrawable(R.drawable.list_pressed));
v.setBackgroundDrawable(mContext.getResources().getDrawable(R.drawable.listview_item_selected_bg));
//保存oldView
oldView = v;
}
}
});
if(oldView != null && (position == (Integer)oldView.getTag())){ // 为点击 item
convertView.setBackgroundDrawable(mContext.getResources().getDrawable(R.drawable.listview_item_selected_bg));
}else{
convertView.setBackgroundDrawable(mContext.getResources().getDrawable(R.drawable.list_pressed));
}