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1、listView控件
- <ListView
- android:id="@+id/contact_listview"
- android:layout_width="wrap_content"
- android:layout_height="400dip"
- android:divider="#b9b9b9"
- android:dividerHeight="1px"
- android:cacheColorHint="#00000000"
- android:listSelector="@drawable/list_selector"
- android:headerDividersEnabled="true">
- </ListView>
2、在drawable文件夹中见一个list_selector.xml文件,不用写什么内容,只是用来把系统自带的给覆盖掉。
- <?xml version="1.0" encoding="UTF-8"?>
- <selector xmlns:android="http://schemas.android.com/apk/res/android">
-
- </selector>
3、在values文件夹中新建一个colors.xml文件,用来写颜色值:
- <?xml version="1.0" encoding="utf-8"?>
- <resources>
- <color name="list_item_focus">#626fcd</color>
- </resources>
4、在java文件里定义一个私有变量private View itemView;用来保存上一次选中的listitem。
5、在下面三种事件中改变背景色
- //listview的itme选中事件
- private OnItemSelectedListener itemSelectedListener = new OnItemSelectedListener() {
- @Override
- public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
- long arg3) {
- itemBackChanged(arg1);
- position = arg2;
- }
- @Override
- public void onNothingSelected(AdapterView<?> arg0) {
- }
- };
-
- //长按事件
- private OnItemLongClickListener itemLongClickListener = new OnItemLongClickListener() {
- @Override
- public boolean onItemLongClick(AdapterView<?> parent, View view,
- int position, long id) {
- itemBackChanged(view);
- ContactGrpMemActivity.this.position = position;
- return false;
- }
- };
-
- //listview的item点击事件
- private OnItemClickListener itemClicklistener = new OnItemClickListener() {
- @Override
- public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
- long arg3) {
- Log.i(TAG, "**************onItemClick arg0 is " + arg0.getClass().getName());
- Log.i(TAG, "**************onItemClick arg1 is " + arg1.getId());
- Log.i(TAG, "**************onItemClick arg2 is " + arg2);
- Log.i(TAG, "**************onItemClick arg3 is " + arg3);
- itemBackChanged(arg1);
- position = arg2;
- }
- };
-
- //改变listitem的背景色
- private void itemBackChanged(View view) {
- //改变当前点击的listitem中textview的字体颜色
- TextView contactName = (TextView)view.findViewById(R.id.contactName);
- TextView contactTel = (TextView)view.findViewById(R.id.contactTel);
- contactName.setTextColor(Color.WHITE);
- contactTel.setTextColor(Color.WHITE);
-
- if(itemView == null) itemView = view;
- if(itemView != view) {
- //改变上次点击点击的listitem中textview的字体颜色
- contactName = (TextView)itemView.findViewById(R.id.contactName);
- contactTel = (TextView)itemView.findViewById(R.id.contactTel);
- contactName.setTextColor(Color.BLACK);
- contactTel.setTextColor(Color.BLACK);
- }
-
- itemView.setBackgroundColor(android.R.color.transparent);//将上次点击的listitem的背景色设置成透明
- view.setBackgroundResource(R.color.list_item_focus);//设置当前点击的listitem的背景色
- itemView = view;
- }
6、如果是图片的话,第三部可以跳过,第5步中view.setBackgroundResource(R.color.list_item_focus)改成view.setBackgroundResource(R.drawable.select_bar);就行了。
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