android listView 控件单击事件

其实大部分内容也是从网上找的，找回之后整理了一下，记录下来给自己添记性啦！

首先：在activity文件中添加listview

main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#f0f0e0" >

<RelativeLayout
android:id="@+id/rl_top"
android:layout_width="fill_parent"
android:layout_alignParentTop="true"
android:layout_height="wrap_content">
<TextView
android:layout_width="fill_parent"
android:layout_height="44dp"
android:gravity="center"
android:textSize="18sp"
android:background="#486a9a"
android:textColor="@android:color/white"
android:text="欢迎使用"/>
</RelativeLayout>

<ListView
android:id="@+id/listview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_below="@id/rl_top"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp"
android:cacheColorHint="#00000000"
android:divider="@null"
android:listSelector="#00000000"
android:dividerHeight="3dp"/>

</RelativeLayout>

然后是添加listview的布局文件
main_item.xml

?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:orientation="vertical"
android:paddingBottom="5dp"
android:descendantFocusability="blocksDescendants"
android:layout_height="wrap_content">

<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dp" >

<ImageView
android:id="@+id/iv_user_image"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:background="@drawable/mypic"
/>
<ImageView
android:id="@+id/iv_run"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:background="@drawable/run"
/>
<TextView
android:id="@+id/tv_content"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_toRightOf="@+id/iv_user_image"
android:layout_toLeftOf="@id/iv_run"
android:background="@drawable/chatfrom_bg"
android:gravity="center"
android:clickable="true"
android:focusable="false"
android:lineSpacingExtra="2dp"
android:minHeight="50dp"
android:textColor="#ff000000"
android:textSize="14sp" />

</RelativeLayout>
</LinearLayout>

然后是处理代码了

mainActivity.java

定义控件:

private ListView chatListView = null;
private List<ChatEntity> chatList = null;
private ChatAdapter chatAdapter = null;

添加listview项

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.main);

chatListView = (ListView) this.findViewById(R.id.listview);
chatList = new ArrayList<ChatEntity>();

SetChatList();

chatAdapter = new ChatAdapter(this,chatList);
chatListView.setAdapter(chatAdapter);

}

private void SetChatList()//这个里添加列表项，也可以从数据库中插入
{
/*chatList.add(NewChatEntity("gif.dm.activity","",true));
chatList.add(NewChatEntity("gif.dm_structure.activity","",false));
chatList.add(NewChatEntity("gif.dm_rebound.activity","",true));
chatList.add(NewChatEntity("gif.dm_low_strain.activity","",false));
chatList.add(NewChatEntity("gif.dm_ultrasonic.activity","",true));*/
chatList.add(NewChatEntity("gif.dm.activity",""));
chatList.add(NewChatEntity("gif.dm_structure.activity",""));
chatList.add(NewChatEntity("gif.dm_rebound.activity",""));
chatList.add(NewChatEntity("gif.dm_low_strain.activity",""));
chatList.add(NewChatEntity("gif.dm_ultrasonic.activity",""));

}

自定义adapter

private  class ChatAdapter extends BaseAdapter{
private Context context = null;
private List<ChatEntity> chatList = null;
private LayoutInflater inflater = null;
private int COME_MSG = 0;
private int TO_MSG = 1;

public ChatAdapter(Context context,List<ChatEntity> chatList){
this.context = context;
this.chatList = chatList;
inflater = LayoutInflater.from(this.context);
}

@Override
public int getCount() {
return chatList.size();
}

@Override
public Object getItem(int position) {
return chatList.get(position);
}

@Override
public long getItemId(int position) {
return position;
}

@Override
public int getItemViewType(int position) {
// 区别两种view的类型，标注两个不同的变量来分别表示各自的类型
ChatEntity entity = chatList.get(position);
if (entity.isComeMsg())
{
return COME_MSG;
}else{
return TO_MSG;
}
}

@Override
public int getViewTypeCount() {
// 这个方法默认返回1，如果希望listview的item都是一样的就返回1，我们这里有两种风格，返回2
return 2;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
//ChatHolder chatHolder = null;
ChatHolder1 chatHolder = null;
if (convertView == null) {
chatHolder = new ChatHolder1();
if (chatList.get(position).isComeMsg()) {
//convertView = inflater.inflate(R.layout.chat_from_item, null);
convertView = inflater.inflate(R.layout.main_item, null);
}else {
//convertView = inflater.inflate(R.layout.chat_to_item, null);
convertView = inflater.inflate(R.layout.main_item_r, null);
}
//chatHolder.timeTextView = (TextView) convertView.findViewById(R.id.tv_time);
chatHolder.flagView = (ImageView) convertView.findViewById(R.id.iv_run);
chatHolder.contentTextView = (TextView) convertView.findViewById(R.id.tv_content);
chatHolder.userImageView = (ImageView) convertView.findViewById(R.id.iv_user_image);
convertView.setTag(chatHolder);
}else {
//chatHolder = (ChatHolder)convertView.getTag();
chatHolder = (ChatHolder1)convertView.getTag();
}

//chatHolder.timeTextView.setText(chatList.get(position).getChatTime());
chatHolder.contentTextView.setText(chatList.get(position).getContent());
chatHolder.userImageView.setImageResource(chatList.get(position).getUserImage());
final String packageName = chatList.get(position).getAppName();
final int pos = position;
chatHolder.contentTextView.setOnClickListener(new OnClickListener(){//这就就是控件单击事件处理函数了！
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
//Toast.makeText(context, appName.substring(0,i), Toast.LENGTH_SHORT).show();
if (chatList.get(pos).isComeMsg())
{
FrameLogic.RunActivity(packageName,context);
Exit();
}
else
{
new AlertDialog.Builder(context).setTitle("错误").setMessage("模块不存在，请先下载安装该模块！").show();
}
}
});

return convertView;
}
}
private class ChatHolder{
private TextView timeTextView;
private ImageView userImageView;
private TextView contentTextView;
}

这样，基本就可以了，但是要注意的是，非常重要的是：

listView布局文件中控件一定要加上android:focusable="false"

然后在文件最外面，一定要加上android:descendantFocusability="blocksDescendants"

详细请看上文中的布局文件. 否则listview单击事件将会无效！

运行效果如图：