android 菜单小结--android menu 小结

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android

Android XML OS

android 菜单包括：

contextmenu(上下文菜单，通过长按调出)
optionmenu(menu菜单)
submenu(子菜单)
带按钮的单选菜单
带按钮的多选菜单

此程序演示了android的上下文菜单，menu按钮菜单，子菜单(包括在xml文件中添加，和在程序中动态添加单选，多选子菜单)以及带按钮单选和多选的菜单

package org.ynu.android;

import java.util.ArrayList;
import java.util.HashMap;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.SubMenu;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
public class MenuActivity extends Activity {

	private int groupId1 = 19880716;
	private int groupId2 = 19880717;
	private ListView lv;

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

		lv = (ListView) findViewById(R.id.lv);

		ArrayList data = new ArrayList();

		HashMap map1 = new HashMap();
		map1.put("item", "第一个选项");
		HashMap map2 = new HashMap();
		map2.put("item", "第二个选项");
		HashMap map3 = new HashMap();
		map3.put("item", "第三个选项");
		HashMap map4 = new HashMap();
		map4.put("item", "第四个选项");
		HashMap map5 = new HashMap();
		map5.put("item", "第五个选项");

		data.add(map1);
		data.add(map2);
		data.add(map3);
		data.add(map4);
		data.add(map5);

		SimpleAdapter adapter = new SimpleAdapter(this, data, R.layout.item,
				new String[] { "item" }, new int[] { R.id.tv });
		lv.setAdapter(adapter);

		//listview每个项长按时的响应上下文菜单
		lv.setOnItemLongClickListener(new OnItemLongClickListener() {

			@Override
			public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
					int arg2, long arg3) {
				// TODO Auto-generated method stub

				Toast.makeText(MenuActivity.this, "弹出上下文菜单", Toast.LENGTH_SHORT);
				return false;
			}
		});
		
		//注册上下文菜单
		registerForContextMenu(lv);
	}

	//创建菜单按钮的菜单
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// TODO Auto-generated method stub

		MenuInflater inflater = new MenuInflater(this);

		inflater.inflate(R.menu.menu, menu);
		menu.getItem(0).setIcon(R.drawable.ic_menu_delete);
		menu.getItem(1).setIcon(R.drawable.ic_menu_home);
		menu.getItem(2).setIcon(R.drawable.ic_menu_zoom);
		return super.onCreateOptionsMenu(menu);
	}

	//当按钮菜单被点击时响应
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		// TODO Auto-generated method stub

		switch (item.getItemId()) {
		case R.id.delete:
			Toast.makeText(this, "删除", Toast.LENGTH_SHORT).show();
			return true;
		case R.id.main:
			Toast.makeText(this, "主页", Toast.LENGTH_SHORT).show();
			return true;
		case R.id.zoom:
			Toast.makeText(this, "放大", Toast.LENGTH_SHORT).show();
			return true;
		default:
			return super.onOptionsItemSelected(item);
		}

	}

	//创建上下文菜单
	@Override
	public void onCreateContextMenu(ContextMenu menu, View v,
			ContextMenuInfo menuInfo) {
		// TODO Auto-generated method stub
		MenuInflater inflater = new MenuInflater(this);
		inflater.inflate(R.menu.context_menu, menu);
		menu.setHeaderIcon(R.drawable.icon);
		SubMenu submenu1 = menu.addSubMenu("动态添加的菜单1");
		submenu1.add(this.groupId1, 0, 0, "动态添加子菜单1");
		submenu1.add(this.groupId1, 0, 0, "动态添加子菜单2");
		submenu1.add(this.groupId1, 0, 0, "动态添加子菜单3");
		submenu1.add(this.groupId1, 0, 0, "动态添加子菜单4");

		// 设置改组子菜单为单选，第三个参数为true时，子菜单单选
		submenu1.setGroupCheckable(this.groupId1, true, true);

		SubMenu submenu2 = menu.addSubMenu("动态添加的菜单2");
		submenu2.add(this.groupId2, 0, 0, "动态添加子菜单1");
		submenu2.add(this.groupId2, 0, 0, "动态添加子菜单2");
		submenu2.add(this.groupId2, 0, 0, "动态添加子菜单3");
		submenu2.add(this.groupId2, 0, 0, "动态添加子菜单4");

		// 设置改组子菜单为多选第三个参数为false时，子菜单多选
		submenu2.setGroupCheckable(this.groupId2, true, false);
		super.onCreateContextMenu(menu, v, menuInfo);
	}

	@Override
	public boolean onContextItemSelected(MenuItem item) {
		// TODO Auto-generated method stub

		switch (item.getItemId()) {
		case R.id.cmenu1:
			Toast.makeText(this, "上下文菜单1", Toast.LENGTH_SHORT).show();
			return true;
		case R.id.cmenu2:
			Toast.makeText(this, "上下文菜单2", Toast.LENGTH_SHORT).show();
			return true;
		case R.id.csubmenu1:
			Toast.makeText(this, "来自xml,我还有子菜单", Toast.LENGTH_SHORT).show();
			return true;
		case R.id.csubmenu2:
			Toast.makeText(this, "来自xml,我还有单选子菜单", Toast.LENGTH_SHORT).show();
			return true;
		case R.id.csubmenu3:
			Toast.makeText(this, "来自xml,我还有多选子菜单", Toast.LENGTH_SHORT).show();
			return true;
		case R.id.buttonmenu1:
			buildRadioDialog();
			return true;
		case R.id.buttonmenu2:
			builderCheckBoxDialog();
			return true;
		default:
			//当按钮被选中时，设置其选中状态为true,这样才能看到在页面上有选中的radio
			if (item.getGroupId() == this.groupId1) {
				Toast.makeText(this, "动态添加的菜单1的子菜单", Toast.LENGTH_SHORT).show();
				if (!item.isChecked()) {
					item.setChecked(true);
					Toast.makeText(this, "您选的是" + item.getTitle(),
							Toast.LENGTH_SHORT).show();
				}
			}

			if (item.getGroupId() == this.groupId2) {
				Toast.makeText(this, "动态添加的菜单2的子菜单", Toast.LENGTH_SHORT).show();
				if (!item.isChecked()) {
					item.setChecked(true);
					Toast.makeText(this, "您选的是" + item.getTitle(),
							Toast.LENGTH_SHORT).show();
				}
			}
			
			
			if (!item.isChecked()) {
				item.setChecked(true);
				Toast.makeText(this, "您选的是" + item.getTitle(),
						Toast.LENGTH_SHORT).show();
			}
			return super.onContextItemSelected(item);

		}

	}

	//上下文菜单关闭时
	@Override
	public void onContextMenuClosed(Menu menu) {
		// TODO Auto-generated method stub
		Toast.makeText(this, "上下文菜单被关", Toast.LENGTH_SHORT).show();
		super.onContextMenuClosed(menu);
	}

	private void buildRadioDialog() {
		Builder builder = new AlertDialog.Builder(this);
		builder.setTitle("单选按钮菜单");
		final String[] titles = new String[] { "白色", "橙色", "蓝色" };

		//-1表示默认没有按钮被选中
		builder.setSingleChoiceItems(titles, -1,
				new DialogInterface.OnClickListener() {

					@Override
					public void onClick(DialogInterface dialog, int which) {
						// TODO Auto-generated method stub
						Toast.makeText(MenuActivity.this, titles[which],
								Toast.LENGTH_SHORT).show();
					}
				});

		builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {

			@Override
			public void onClick(DialogInterface dialog, int which) {
				// TODO Auto-generated method stub
				Toast.makeText(MenuActivity.this, "确定", Toast.LENGTH_SHORT)
						.show();
			}
		});

		builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {

			@Override
			public void onClick(DialogInterface dialog, int which) {
				// TODO Auto-generated method stub
				Toast.makeText(MenuActivity.this, "取消", Toast.LENGTH_SHORT)
						.show();
			}
		});

		builder.create().show();
	}

	private void builderCheckBoxDialog() {
		Builder builder = new AlertDialog.Builder(this);
		builder.setTitle("多选按钮");
		final String[] titles = new String[] { "白色", "橙色", "蓝色" };
		builder.setMultiChoiceItems(titles,
				new boolean[] { false, false, false },
				new DialogInterface.OnMultiChoiceClickListener() {

					@Override
					public void onClick(DialogInterface dialog, int which,
							boolean isChecked) {
						// TODO Auto-generated method stub

						//当checkbox选中时响应
						if (isChecked) {
							Toast.makeText(MenuActivity.this,
									titles[which] + "被选中", Toast.LENGTH_SHORT)
									.show();
						}

						//当checkbox未选中时响应
						if (!isChecked) {
							Toast.makeText(MenuActivity.this,
									titles[which] + "被取消", Toast.LENGTH_SHORT)
									.show();
						}
					}
				});

		//确定按钮事件响应
		builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {

			@Override
			public void onClick(DialogInterface dialog, int which) {
				// TODO Auto-generated method stub
				Toast.makeText(MenuActivity.this, "确定", Toast.LENGTH_SHORT)
						.show();
			}
		});

		//取消按钮 事件响应
		builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {

			@Override
			public void onClick(DialogInterface dialog, int which) {
				// TODO Auto-generated method stub
				Toast.makeText(MenuActivity.this, "取消", Toast.LENGTH_SHORT)
						.show();
			}
		});

		builder.create().show();
	}
}

contex_menu.xml文件：

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
	<item android:id="@+id/cmenu1" android:title="上下文菜单1" />
	<item android:id="@+id/cmenu2" android:title="上下文菜单2" />
	<item android:id="@+id/csubmenu1" android:title="来自xml,我还有子菜单">
		<menu>
			<item android:title="子菜单1"></item>
			<item android:title="子菜单2"></item>
			<item android:title="子菜单3"></item>
		</menu>
	</item>
	<item android:id="@+id/csubmenu2" android:title="来自xml,我还有单选子菜单">
		<menu>
			<group android:checkableBehavior="single">
				<item android:title="子菜单1"></item>
				<item android:title="子菜单2"></item>
				<item android:title="子菜单3"></item>
			</group>
		</menu>
	</item>
	<item android:id="@+id/csubmenu3" android:title="来自xml,我还有多选子菜单">
		<menu>
			<group android:checkableBehavior="all">
				<item android:title="子菜单1"></item>
				<item android:title="子菜单2"></item>
				<item android:title="子菜单3"></item>
			</group>
		</menu>
	</item>
	
	<item android:id="@+id/buttonmenu1" android:title="带按钮的单选子菜单">
	</item>
	
	<item android:id="@+id/buttonmenu2" android:title="带按钮的多选子菜单">
	</item>
</menu>

menu.xml文件：

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
	<item android:id="@+id/delete" android:title="删除" />
	<item android:id="@+id/main" android:title="主页">
		<menu>
			<item android:id="@+id/create_new" android:title="子菜单1" />
			<item android:id="@+id/open" android:title="子菜单2" />
		</menu>
	</item>
	<item android:id="@+id/zoom" android:title="放大" />
</menu>

布局文件main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
>
<ListView
android:id="@+id/lv"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
>
</ListView>
</RelativeLayout>

item.xml布局文件

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent">
  <TextView
  android:id="@+id/tv"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:textSize="20dip"
  android:textColor="#065fb9"
  >
  </TextView>
</RelativeLayout>

效果图