Android应用开发札记 - 项目代码2

1.2 菜单

    MainActivity.java

package com.example.testmenu;import android.os.Bundle;import android.app.Activity;import android.view.ContextMenu;import android.view.Menu;import android.view.MenuInflater;import android.view.MenuItem;import android.view.View;import android.view.ContextMenu.ContextMenuInfo;import android.widget.ArrayAdapter;import android.widget.ListView;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends Activity {	private static final int MENU_FILE_1 = Menu.FIRST;	private static final int MENU_EXIT_2 = Menu.FIRST + 1;		String[] phones = {			"HTC Rezound",  "Samsung Galaxy S II Skyrocket",     		"Samsung Galaxy Nexus", "Motorola Droid Razr",     		"Samsung Galaxy S", "Samsung Epic Touch 4G",     		"iPhone 4S", "HTC Titan"    		};	    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);                ListView listView = (ListView) findViewById(R.id.list01);                ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.listitem,        		phones);                listView.setAdapter(adapter);                registerForContextMenu(listView);    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        //getMenuInflater().inflate(R.menu.activity_main, menu);    	MenuInflater menuInflater = getMenuInflater();    	menuInflater.inflate(R.menu.my_menu, menu);        return true;    }        @Override    public void onCreateContextMenu(ContextMenu menu, View v,    		ContextMenuInfo menuInfo) {    	// TODO Auto-generated method stub    	if (v.getId() == R.id.list01) {    		MenuInflater popmenuInflater = getMenuInflater();    		popmenuInflater.inflate(R.menu.pop_menu, menu);    		super.onCreateContextMenu(menu, v, menuInfo);    	}    }        @Override    public boolean onContextItemSelected(MenuItem item) {    	// TODO Auto-generated method stub    	TextView text = (TextView) findViewById(R.id.footer);    	    	switch (item.getItemId()) {		case R.id.edt01:			text.setText("Edit Selected");						return true;		case R.id.del01:			text.setText("Delete Selected");						return true;					case R.id.about01:			Toast.makeText(this, "This is software author: xiaobin.", Toast.LENGTH_SHORT).show();						return true;					default:						return super.onContextItemSelected(item);		}    }        @Override    public boolean onOptionsItemSelected(MenuItem item) {    	// TODO Auto-generated method stub    	switch (item.getItemId()) {		case MENU_FILE_1:			fileMenu();						break;		case MENU_EXIT_2:			exitMenu();			break;					default:			break;		}    	    	return false;    }        private void fileMenu() {    	// TODO My-generated method stub    }        private void exitMenu() {    	// TODO My-generated method stub    }    }