Android应用开发笔记 - 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
}

}