ListActivity与Menu整合

最新推荐文章于 2017-05-25 14:47:42 发布

lzh_868686

最新推荐文章于 2017-05-25 14:47:42 发布

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分类专栏： Android学习笔记文章标签： Android OS XML

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本文介绍了一个 Android 应用中使用 ListActivity 和菜单功能的具体实现案例。通过这个示例，开发者可以了解如何在 Android 应用中设置列表项点击事件以及创建和响应菜单选项。

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package com.wm.AndroidListActivityMenu;

import android.app.ListActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class AndroidListActivityMenu extends ListActivity {
private int selectedItem = -1;
private String[] mString;
static final private int MENU_LIST1 = Menu.FIRST;
static final private int MENU_LIST2 = Menu.FIRST + 1;
private ArrayAdapter<String> mAdapter;

// /** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// setContentView(R.layout.main);
}

protected void OnListItemClick(ListView l, View v, int position, long id) {
selectedItem = position;
Toast.makeText(AndroidListActivityMenu.this, mString[selectedItem],
Toast.LENGTH_SHORT).show();
super.onListItemClick(l, v, position, id);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
int idGroup1 = 0;
int orderMenuItem1 = Menu.NONE;
int orderMenuItem2 = Menu.NONE + 1;
menu.add(idGroup1, MENU_LIST1, orderMenuItem1, "一");
menu.add(idGroup1, MENU_LIST2, orderMenuItem2, "二");
return super.onCreateOptionsMenu(menu);
}

@Override
public boolean onOptionsItemSelected(MenuItem menuItem) {
switch (menuItem.getItemId()) {
case (MENU_LIST1):
mString = new String[] { "一01", "一02", "一03", "一04" };
mAdapter = new ArrayAdapter<String>(AndroidListActivityMenu.this,
R.layout.main, mString);
AndroidListActivityMenu.this.setListAdapter(mAdapter);
break;
case (MENU_LIST2):
mString = new String[] { "二01", "二02", "二03", "二04" };
mAdapter = new ArrayAdapter<String>(AndroidListActivityMenu.this,
R.layout.main, mString);
AndroidListActivityMenu.this.setListAdapter(mAdapter);
break;
}
return super.onOptionsItemSelected(menuItem);
}
}

<?xml version="1.0" encoding="utf-8"?>
<TextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>