最近讨论了一个项目需求，在ListView的Item中放置了一个类似电话的图标，点击图标可以将号码调到拨号界面。实现起来很是容易，原理也易懂，较为实用，项目中有需要的可以直接引入。 我模拟了一个简单的demo.代码如下：
1.ListAdapter.java:
package com.example.listviewphone;
//省略import
public class ListAdapter extends BaseAdapter {
private List<Test> tests;
private Context context;
LayoutInflater layoutInflater;
public ListAdapter(Context context,List<Test> tests){
this.tests=tests;
this.context=context;
layoutInflater=LayoutInflater.from(context);
}
@Override
public int getCount() {
return tests.size();
}
@Override
public Object getItem(int position) {
return tests.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder=null;
if(convertView==null){
viewHolder=new ViewHolder();
convertView=layoutInflater.inflate(R.layout.item_list, null);
viewHolder.mTitleLisTextView=(TextView)convertView.findViewById(R.id.tv_title_list);
viewHolder.mPhoneTextView=(TextView)convertView.findViewById(R.id.tv_phone_list);
convertView.setTag(viewHolder);
}else {
viewHolder=(ViewHolder) convertView.getTag();
} viewHolder.mTitleLisTextView.setText(tests.get(position).getTitle_lost());
viewHolder.mPhoneTextView.setText(tests.get(position).getPhone_lost());
viewHolder.mPhoneTextView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// Intent intent = new Intent(Intent.ACTION_CALL,Uri.parse("tel:"+tests.get(position).getPhone_lost())); //直接拨打电话，较为暴利，慎用！
Intent intent = new Intent(Intent.ACTION_DIAL,Uri.parse("tel:"+tests.get(position).getPhone_lost())); //跳转到用户界面较为温和，推荐使用！ context.startActivity(intent);
}
});
return convertView;
}
class ViewHolder {
private TextView mPhoneTextView;
private TextView mTitleLisTextView;
ViewHolder() {
}
}
}ListAdapter 继承自BaseAdapter，构造方法传入上下文对象context和数据List-tests。覆写了getCount方法，返回数据个数，覆写了getItem返回指定下表对象，覆写了getItemId返回指定栏目下标。覆写了getView方法，返回view，在getView方法中实现了子栏目的单击事件监听，结合系统的Intent.ACTION_DIAL，进行电话功能的调取。
2.javabean—Test.java:
package com.example.listviewphone;
public class Test
{
private String content_test;
private String phone_test;
private String title_test;
private String username;
public String getContent_test() {
return content_test;
}
public void setContent_test(String content_test) {
this.content_test = content_test;
}
public String getPhone_test() {
return phone_test;
}
public void setPhone_test(String phone_test) {
this.phone_test = phone_test;
}
public String getTitle_test() {
return title_test;
}
public void setTitle_test(String title_test) {
this.title_test = title_test;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
}为了便于操作，封装了Test类。
3.MainActivity.java:
package com.example.listviewphone;
//省略了import
public class MainActivity extends Activity {
private ListView mListView;
private ListAdapter adapter;
private List<Test> tests;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
mListView=(ListView)findViewById(R.id.listview);
initDatas();
adapter=new ListAdapter(this, tests);
mListView.setAdapter(adapter);
}
private void initDatas() {
tests=new ArrayList<Test>();
for (int i = 0; i < 30; i++) {
Test test =new Test();
test.setTitle_test("电话");
test.setPhone_test("123456789"+i);
tests.add(test);
}
}
}下面是简单的两个布局文件：
1.activity_main.xml:
<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" >
<ListView
android:id="@+id/listview"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</RelativeLayout>2.item_list.xml: