这段代码在android模拟器中无法显示出menu，没有报错也运行了但就是不显示menu？

[yu8866213]

public class MenuActivity extends Activity {

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// 定义设置上下文菜单的载体并注册
TextView tv = new TextView(this);
tv.setText("上下文菜单的载体");
registerForContextMenu(tv);
setContentView(tv);
//setContentView(R.layout.main);
}
//创建OptionsMenu
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
this.populateMenu(menu);
return true;
}
//单击事件
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case Menu.FIRST + 1:
Toast.makeText(this, "删除菜单被点击了", Toast.LENGTH_LONG).show();
break;
case Menu.FIRST + 2:
Toast.makeText(this, "保存菜单被点击了", Toast.LENGTH_LONG).show();
break;
case Menu.FIRST + 3:
Toast.makeText(this, "帮助菜单被点击了", Toast.LENGTH_LONG).show();
break;
case Menu.FIRST + 4:
Toast.makeText(this, "添加菜单被点击了", Toast.LENGTH_LONG).show();
break;
case Menu.FIRST + 5:
Toast.makeText(this, "详细菜单被点击了", Toast.LENGTH_LONG).show();
break;
case Menu.FIRST + 6:
Toast.makeText(this, "发送菜单被点击了", Toast.LENGTH_LONG).show();
break; }
return false;
}

private void populateMenu(Menu menu) {
menu.add(Menu.NONE, Menu.FIRST + 1, 5, "删除").setIcon(android.R.drawable.ic_menu_delete);
menu.add(Menu.NONE, Menu.FIRST + 2, 2, "保存").setIcon(android.R.drawable.ic_menu_edit);
menu.add(Menu.NONE, Menu.FIRST + 3, 6, "帮助").setIcon(android.R.drawable.ic_menu_help);
menu.add(Menu.NONE, Menu.FIRST + 4, 1, "添加").setIcon(android.R.drawable.ic_menu_add);
menu.add(Menu.NONE, Menu.FIRST + 5, 4, "详细").setIcon(android.R.drawable.ic_menu_info_details);
menu.add(Menu.NONE, Menu.FIRST + 6, 3, "发送").setIcon(android.R.drawable.ic_menu_send);

}}

[fontlose]

ms没什么问题，你点菜单键没出菜单吗？

[思考的芦苇]

刚好这里有:http://blog.csdn.net/yuxlong2010/article/details/6579368

[xinqiqi123]

super.onCreateOptionsMenu(menu);
这2行代码顺序反了吧，this.populateMenu(menu);在前
还有onOptionsItemSelected方法里面怎么return false

[傲慢的上校]

[Quote=引用 3 楼 xinqiqi123 的回复:]

super.onCreateOptionsMenu(menu);
这2行代码顺序反了吧，this.populateMenu(menu);在前
还有onOptionsItemSelected方法里面怎么return false
[/Quote]

[lizhengjun2010]

楼主，程序没有问题！！！
菜单是点击menu键才弹出的！ 不是一直显示在屏幕下方的！！

你点击下menu键 试试能不能弹出你想要的菜单！！

试试吧！

[fontlose]

[Quote=引用楼主 yu8866213 的回复:]
public class MenuActivity extends Activity {

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceSta……
[/Quote]
registerForContextMenu(tv);????
你是要ContextMenu吗？

     activity内重写onContextItemSelected
  @Override
	public boolean onContextItemSelected(MenuItem item) {
		// TODO Auto-generated method stub
		
		
		  switch (item.getItemId()) {   
		  case Menu.FIRST + 1:   
		  Toast.makeText(this, "删除菜单被点击了", Toast.LENGTH_LONG).show();   
		  break;   
		  case Menu.FIRST + 2:   
		  Toast.makeText(this, "保存菜单被点击了", Toast.LENGTH_LONG).show();   
		  break;   
		  case Menu.FIRST + 3:   
		  Toast.makeText(this, "帮助菜单被点击了", Toast.LENGTH_LONG).show();   
		  break;   
		  case Menu.FIRST + 4:   
		  Toast.makeText(this, "添加菜单被点击了", Toast.LENGTH_LONG).show();   
		  break;   
		  case Menu.FIRST + 5:   
		  Toast.makeText(this, "详细菜单被点击了", Toast.LENGTH_LONG).show();   
		  break;   
		  case Menu.FIRST + 6:   
		  Toast.makeText(this, "发送菜单被点击了", Toast.LENGTH_LONG).show();   
		  break; }   
		  return false;
		
		
	}
    

     //tv设置OnCreateContextMenuListener
     tv.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {
			@Override
			public void onCreateContextMenu(ContextMenu arg0, View arg1,
					ContextMenuInfo arg2) {
				// TODO Auto-generated method stub
				populateMenu(arg0);
				//super.onCreateContextMenu(arg0,arg1,arg2);
			}	
		}) ;