android listview onitemselected,android ListView的使用

在Acvitity中显示要显示列表，并且显示相应内容：

public class MainActivity extends Activity {

private static final String[] array = {

"sunday","monday","tuesday","wednesday",

"thursday","friday","saturday"

};

private LinearLayout myLinearLayout;

private TextView myTextView;

private ListView myListView;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

//创建一个布局器

myLinearLayout = new LinearLayout(this);

myLinearLayout.setBackgroundColor(android.graphics.Color.WHITE);

myLinearLayout.setOrientation(LinearLayout.VERTICAL);

//添加TextView

myTextView = new TextView(this);

LinearLayout.LayoutParams param1 = new LinearLayout.LayoutParams(

LinearLayout.LayoutParams.FILL_PARENT,

LinearLayout.LayoutParams.WRAP_CONTENT

);

myTextView.setText(R.string.title);

myTextView.setBackgroundColor(getResources().getColor(R.drawable.blue));

myLinearLayout.addView(myTextView, param1);

//创建ListView

myListView = new ListView(this);

LinearLayout.LayoutParams param2 = new LinearLayout.LayoutParams(

LinearLayout.LayoutParams.FILL_PARENT,

LinearLayout.LayoutParams.WRAP_CONTENT

);

myListView.setBackgroundColor(getResources().getColor(R.drawable.ltgray));

myLinearLayout.addView(myListView, param2);

//new ArrayAdapter对象，并将数据传入

ArrayAdapterarrAdapter = new ArrayAdapter(this, R.layout.my_simple_list_item, array);

myListView.setAdapter(arrAdapter);

setContentView(myLinearLayout);

//====================================================================================

//添加鼠标滚轮选中后出发事件OnItemSelectedListener

myListView.setOnItemSelectedListener(new OnItemSelectedListener() {

public void onItemSelected(AdapterView> arg0, View arg1,

int arg2, long arg3) {

//将鼠标滚轮选中的item的字符串内容显示到myTextView上

myTextView.setText("你选的是" + arg0.getSelectedItem().toString());

}

public void onNothingSelected(AdapterView> arg0) {

// TODO Auto-generated method stub

}

});

//添加鼠标单击事件

myListView.setOnItemClickListener(new OnItemClickListener() {

public void onItemClick(AdapterView> arg0, View arg1, int arg2,

long arg3) {

//arg2是ListView的index

myTextView.setText("你选中的是" + array[arg2]);

}

});

}

}