也没什么了 就是一个 android菜单的 小例子 实现步骤如下：
（1）创建一个包含文本视图的XML布局文件。
（2）创建一个Activity类，其中包含在第一步中定义的布局。
（3）设置菜单
（4）向菜单添加一些常规菜单项
（5）向菜单添加一些辅助菜单项
（6）响应菜单项
（7）修改 AndroidManifest.xml文件，以显示应用程序正确的标题
布局文件
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" ><TextView android:id="@+id/textViewId" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Debugging Scratch Pad" /></LinearLayout>
Activity类
package xiaohang.zhimeng;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.widget.TextView;public class SampleMenusActivity extends Activity { Menu myMenu = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); } //重写onCreateOptionsMenu 并以编程方式设置菜单 @Override public boolean onCreateOptionsMenu(Menu menu) { // call the parent to attach any system level menus super.onCreateOptionsMenu(menu); this.myMenu = menu; //add a few normal menus addRegularMenuItems(menu); //add a few secondary menus add5SecondaryMenuItems(menu); //it must return true to show the menu //if it is false menu won't show return true; } //添加常规菜单项 private void addRegularMenuItems(Menu menu){ int base = Menu.FIRST; // value is 1 menu.add(base, base, base, "append"); menu.add(base, base+1, base+1, "item 2"); menu.add(base, base+2, base+2, "clear"); menu.add(base, base+3, base+3, "hide secondary"); menu.add(base, base+4, base+4, "show secondary"); menu.add(base, base+5, base+5, "enable secondary"); menu.add(base, base+6, base+6, "disable secondary"); menu.add(base, base+7, base+7, "check secondary"); menu.add(base, base+8, base+8, "uncheck secondary"); } //添加辅助菜单项 private void add5SecondaryMenuItems(Menu menu){ //Secondary items are shown just like everything else int base=Menu.CATEGORY_SECONDARY; menu.add(base, base+1, base+1, "sec. item 1"); menu.add(base, base+2, base+2, "sec. item 2"); menu.add(base, base+3, base+3, "sec. item 3"); menu.add(base, base+4, base+4, "sec. item 4"); menu.add(base, base+5, base+5, "sec. item 5"); } //响应菜单项单击 @Override public boolean onOptionsItemSelected(MenuItem item) { if (item.getItemId() == 1) { appendText("\nhello"); } else if (item.getItemId() ==2) { appendText("\nitem2"); } else if (item.getItemId() == 3) { emptyText(); } else if (item.getItemId() ==4) { //hide secondary this.appendMenuItemText(item); this.myMenu.setGroupVisible(Menu.CATEGORY_SECONDARY, false); } else if(item.getItemId() == 5){ //show secondary this.appendMenuItemText(item); this.myMenu.setGroupVisible(Menu.CATEGORY_SECONDARY, true); } else if (item.getItemId() == 6) { //enable secondary this.appendMenuItemText(item); this.myMenu.setGroupEnabled(Menu.CATEGORY_SECONDARY, true); } else if(item.getItemId() == 7){ //disable secondary this.appendMenuItemText(item); this.myMenu.setGroupEnabled(Menu.CATEGORY_SECONDARY, false); } else if (item.getItemId() == 8) { //check secondary this.appendMenuItemText(item); myMenu.setGroupCheckable(Menu.CATEGORY_SECONDARY, true, false); } else if (item.getItemId() == 9) { //uncheck secondary this.appendMenuItemText(item); myMenu.setGroupCheckable(Menu.CATEGORY_SECONDARY, false, false); } else { this.appendMenuItemText(item); } //should return true if the menu item //is handled return true; } //向调试TextView 写入数据的实用程序函数 //Given a string of text append it to the TextView private void appendText(String text){ TextView tv = (TextView)this.findViewById(R.id.textViewId); tv.setText(tv.getText() + text); } //Given a menu item append its title to the TextView private void appendMenuItemText(MenuItem menuItem){ String title = menuItem.getTitle().toString(); TextView tv = (TextView)this.findViewById(R.id.textViewId); tv.setText(tv.getText() + "\n" + title); } //Empty the TextView of its contents private void emptyText(){ TextView tv = (TextView)this.findViewById(R.id.textViewId); tv.setText(""); }}AndroidManifest.xml文件
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="xiaohang.zhimeng" android:versionCode="1" android:versionName="1.0"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".SampleMenusActivity" android:label="Sample Menus Application"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> <uses-sdk android:minSdkVersion="9" /></manifest>
运行效果如下
源码附件