mainActivity如下:
package cn.testlistviewcolor;
import java.util.ArrayList;
import java.util.HashMap;
import android.app.Activity;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.SimpleAdapter;
//小功能:
//1 点击ListView的item时,item的颜色(或者背景图片)发生变化
//2 与此同时,item中的TextView里的字体颜色发生变化
public class MainActivity extends Activity {
private ListView listView;
private ArrayList<HashMap<String, Object>> arrayList;
private HashMap<String, Object> hashMap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
listView = (ListView) findViewById(R.id.listView);
arrayList = new ArrayList<HashMap<String, Object>>();
for(int i=0; i<5; i++) {
hashMap = new HashMap<String, Object>();
hashMap.put("data", "Test" + i);
arrayList.add(hashMap);
}
SimpleAdapter simple =
new SimpleAdapter(this, arrayList, R.layout.list_item, new String[]{"data"},new int[]{R.id.textView});
listView.setAdapter(simple);
}
}
main.xml如下:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<ListView
android:id="@+id/listView"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</RelativeLayout>
list_item.xml如下:
<?xml version="1.0" encoding="utf-8"?>
<!-- @drawable/bg_selector1为 item背景图变换 -->
<!-- @drawable/bg_selector2为 item背景色变换 -->
<!-- @drawable/textcolor_selector为点击和未点击时TextView上的文字颜色的切换 -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="@drawable/bg_selector1"
>
<TextView
android:id="@+id/textView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:textColor="@drawable/textcolor_selector"
/>
</LinearLayout>
bg_selector1.xml如下:
<?xml version="1.0" encoding="utf-8" ?> <!--当点击和平常状况下显示不同的背景图片 --> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_pressed="true" android:drawable="@drawable/ha" /> <item android:drawable="@drawable/ic_launcher" /> </selector>
bg_selector2.xml如下:
<?xml version="1.0" encoding="utf-8" ?> <!--当点击和平常状况下显示不同的颜色 --> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_pressed="true" android:drawable="@color/red" /> <item android:drawable="@color/green" /> </selector>
textcolor_selector.xml如下:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_focused="true" android:color="@color/white" /> <!-- focused -->
<item android:state_pressed="true" android:color="@color/white" /> <!-- pressed -->
<item android:state_selected="true" android:color="@color/white" /> <!-- pressed -->
<item android:color="@color/black" /> <!-- default -->
</selector>
