有兩種方法實現長按彈出上下文選單:

方法一：

1）註冊上下文選單

/**
 * 上下文選單演示Demo
 * 
 * @author CodingMyWorld 2011-8-27 下午03:22:39
 */
publicclass SampleContextMenuActivity extends ListActivity {
    privatestaticfinal String TAG ="SampleContextMenuActivity";

    @Override
    protectedvoid onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // 顯示列表
        simpleShowList();
        // 為所有列表項註冊上下文選單
this.registerForContextMenu(getListView());
    }

    privatevoid simpleShowList() {
        // list item
        String[] files =new String[] {
            "檔案1",
            "檔案2",
            "檔案3",
            "檔案4"
        };
        // simple array adapter
        ArrayAdapter<String> adapter =new ArrayAdapter<String>(
                this, 
                android.R.layout.simple_list_item_1,
                files);
        // set adapter
this.setListAdapter(adapter);
        Log.v(TAG, "show simple list");
    }
}
 

2）生成上下文選單

@Override
publicvoid onCreateContextMenu(ContextMenu menu, View v,
        ContextMenuInfo menuInfo) {
    Log.v(TAG, "populate context menu");
    // set context menu title
    menu.setHeaderTitle("檔案操作");
    // add context menu item
    menu.add(0, 1, Menu.NONE, "傳送");
    menu.add(0, 2, Menu.NONE, "標記為重要");
    menu.add(0, 3, Menu.NONE, "重新命名");
    menu.add(0, 4, Menu.NONE, "刪除");
}
 

3）響應上下文選單項

@Override
publicboolean onContextItemSelected(MenuItem item) {
    // 得到當前被選中的item資訊
    AdapterContextMenuInfo menuInfo = (AdapterContextMenuInfo) item.getMenuInfo();
    Log.v(TAG, "context item seleted ID="+ menuInfo.id);
    
    switch(item.getItemId()) {
    case1:
        // do something
break;
    case2:
        // do something
break;
    case3:
        // do something
break;
    case4:
        // do something
break;
    default:
        returnsuper.onContextItemSelected(item);
    }
    returntrue;
}
 

方法二、

1）設定上下文選單監聽

@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.timing_sms_list_screen);
		mTimingListView = getListView();
		mEmptyView = (LinearLayout)findViewById(R.id.timing_empty_view);
//		mTimingListView.setEmptyView(mEmptyView);
		doQuery();
		mTimingListView.setOnCreateContextMenuListener(mConvListOnCreateContextMenuListener);
	}

2）定義上下文選單監聽器

private final OnCreateContextMenuListener mConvListOnCreateContextMenuListener = new OnCreateContextMenuListener() {
		@Override
		public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
			Toast.makeText(getApplicationContext(), "onCreateContextMenu()", 1000).show();
			menu.add(0, MENU_DELETE, 0, R.string.ti_delete);
			menu.add(0, MENU_EDIT, 1, R.string.ti_edit);
			menu.add(0, MENU_SEND_IMMEDIATE, 2, R.string.ti_send_immediately);
		}
	};

3）響應上下文選單項

@Override
	public boolean onContextItemSelected(MenuItem item) {
    	TimingSmsDataService service = new TimingSmsDataService(getApplicationContext());
    	switch (item.getItemId()) {
        	case MENU_DELETE:
        		AdapterContextMenuInfo info = (AdapterContextMenuInfo)item.getMenuInfo();
        		Toast.makeText(getApplicationContext(), "id: "+info.id, 1500).show();
//        		service.deleteTimingSmsById(info.id);
        		break;
    	}
		return super.onContextItemSelected(item);
	}