![Mars的mp3实例 Mars的mp3实例](https://image.shishitao.com:8440/aHR0cHM6Ly9ia3FzaW1nLmlrYWZhbi5jb20vdXBsb2FkL2NoYXRncHQtcy5wbmc%2FIQ%3D%3D.png?!?w=700&webp=1)
Mars的mp3实例第一课:
关于menu:
package mars.mp3player01; import mars.down.HttpDownloader;
import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast; public class Mp3ListActivity extends ListActivity{
private static final int UPDATE = 3;
private static final int ABOUT = 4;
@Override
public boolean onCreateOptionsMenu(Menu menu) {
menu.add(0, 3, 1, R.string.mp3list_update);
menu.add(0, 4 , 2,R.string.mp3list_about);
return super.onCreateOptionsMenu(menu);
} @Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
} @Override
public boolean onOptionsItemSelected(MenuItem item) {
System.out.println("id:"+item.getItemId());
// Intent intent01 = new Intent(this, MainActivity.class);
// intent01.s switch (item.getItemId()) {
case UPDATE:
Mytoast("您选择了更新按钮");
//用户点击了更新列表按钮 break; case ABOUT: Mytoast("您选择了更新关于");
//用户点击了关于按钮
break;
}
return super.onOptionsItemSelected(item);
} private void Mytoast(String message){
Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
} private String downloadXML(){
HttpDownloader httpdownload = new HttpDownloader();
httpdownload.dow return null;
} }