Android菜单的有这几种:
1,OptionMenue:选项菜单
2,contextMenu:上下文菜单 3,SubMenu子菜单其中,OptionMenue与contextMenu的区别(OptionMenue与SubMenu区别较小):
1,OptionMenue对应的四activity,一个activity只能拥有一个选项菜单 2,contextMenu对于的是View,每一个View都可以设置上下文菜单 3,一般情况下contextMenu常用于ListView或者GridView;下面分别进行详细的介绍:
第一:OptionMenue:选项菜单,
1):菜单的实现:
在activity中实现方法:onCreateOptionsMenu()
1.1:设置菜单项可用代码动态设置menuadd();
1.2:通过xml设置,getMenuInflater().inflate2):监听的实现:
在activity中实现方法:onCreateOptionsMenu()
示例如下:
@Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); switch (id) { case R.id.action_menu_item1: //设置跳转界面 Intent intent = new Intent(MainActivity.this, SettingActivity.class); item.setIntent(intent); //Toast.makeText(this, "点击了菜单1", 0).show(); break; case R.id.action_menu_item2: Toast.makeText(this, "点击了菜单2", 0).show(); break; } return super.onOptionsItemSelected(item); }
其中main.xml的实现如下:
第二:contextMenu:上下文菜单(windows下右键的弹出,Android下针对文件长按):
构成:图标,标题,菜单项,监听
创建方法:
1,在View注册上下文菜单registerForContextMenu() 2,添加上下文菜单内容onCreateContextMenu() 2.1:可以通过代码动态添加 2.2:可以加载xml文件夹中的菜单项 3,设置菜单点击后的响应事件onContenxtItemSelected();示例:mainActivity的实现如下:
public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); showListView(); } //设置展示的列表 private void showListView(){ ListView listView = (ListView) findViewById(R.id.listview); ArrayAdapteradapter = new ArrayAdapter (this, android.R.layout.simple_list_item_1, getData()); listView.setAdapter(adapter); this.registerForContextMenu(listView);//设置菜单选项 } //为列表设置数据 private ArrayList getData(){ ArrayList list = new ArrayList (); for(int i=0;i<15;i++){ list.add("列表"+i); } return list; } @Overridepublic void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { super.onCreateContextMenu(menu, v, menuInfo); //设置菜单显示内容 menu.setHeaderTitle("操作"); //方法二:通过xml进行选项的设置 menu.setHeaderIcon(R.drawable.ic_launcher); //方法一:通过add动态的添加// menu.add(1, 1, 1, "复制");// menu.add(1, 2, 1, "粘贴");// menu.add(1, 3, 1, "剪切");// menu.add(1, 4, 1, "重命名"); MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.main, menu);} @Overridepublic boolean onContextItemSelected(MenuItem item) { switch (item.getItemId()) { case 1: Toast.makeText(this, "点击复制", 0).show(); break; case 2: Toast.makeText(this, "点击粘贴", 0).show(); break; case 3: Toast.makeText(this, "点击剪切", 0).show(); break; case 4: Toast.makeText(this, "点击重命名", 0).show(); break; } return super.onContextItemSelected(item);} }
第三:SubMenu子菜单:
这个实现起来和OptionMenue差不多,所需要实现的方法也是一致的,只是需要在onCreateOptionsMenu()方法中定义SubMenu
对象,
具体示例如下:
public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. // getMenuInflater().inflate(R.menu.main, menu); SubMenu file = menu.addSubMenu("文件"); SubMenu edit = menu.addSubMenu("编辑"); file.add(1, 1, 1, "新建"); file.add(1, 2, 1, "打开"); file.add(1, 3, 1, "保存"); file.setHeaderTitle("文件操作"); file.setHeaderIcon(R.drawable.ic_launcher); edit.add(2, 1, 1, "复制"); edit.add(2, 2, 1, "粘贴"); edit.add(2, 3, 1, "剪切"); edit.add(2, 4, 1, "重命名"); edit.setHeaderTitle("编辑操作"); edit.setHeaderIcon(R.drawable.ic_launcher); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. if(item.getGroupId()==1){ switch (item.getItemId()) { case 1: Toast.makeText(this, "点击新建", 0).show(); break; case 2: Toast.makeText(this, "点击打开", 0).show(); break; case 3: Toast.makeText(this, "点击保存", 0).show(); break; } }else if(item.getGroupId()==2){ switch (item.getItemId()) { case 1: Toast.makeText(this, "点击复制", 0).show(); break; case 2: Toast.makeText(this, "点击粘贴", 0).show(); break; case 3: Toast.makeText(this, "点击剪切", 0).show(); break; case 4: Toast.makeText(this, "点击重命名", 0).show(); break; } } return super.onOptionsItemSelected(item); }}
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