如何添加操作栏的选项菜单中的Android的碎片碎片、选项、操作、菜单中
我想在 Android的碎片选项菜单。 动作条选项菜单中没有我的片段显示。
下面是我的code和我都 onCreateOptionsMenu（）和 onOptionSelected（）功能。我的code不显示任何错误。但是，选项菜单不显示。
包org.reachout;
进口android.os.Bundle;
进口android.support.v4.app.Fragment;
进口android.view.LayoutInflater;
进口android.view.View;
进口android.view.ViewGroup;
进口android.widget.LinearLayout;
进口org.general.R;
公共类ViewMessageFragment扩展片段{
/ *（非Javadoc中）
* @see android.support.v4.app.Fragment＃onCreateView（android.view.LayoutInflater，android.view.ViewGroup，android.os.Bundle）
* /
@覆盖
公共查看onCreateView（LayoutInflater充气，容器的ViewGroup，
捆绑savedInstanceState）{
如果（集装箱== NULL）{
//我们有不同的布局，并在他们这一个
//片段的含框架不存在。片段
//仍然可以从它的保存的状态创建的，但是有
//没有理由去尝试创建视图，因为它的层次结构
//将不被显示。请注意，这是没有必要 - 我们可以
//只需运行code以下，我们将创建并返回
//视图层次;它只是永远不会被使用。
返回null;
}
返回（的LinearLayout）inflater.inflate（R.layout.viewmessages_tab_fragment_layout，集装箱，假）;
}
@覆盖
公共无效onCreateOptionsMenu（功能菜单，MenuInflater充气）{
// TODO自动生成方法存根
super.onCreateOptionsMenu（菜单，充气）;
inflater.inflate（R.menu.askexperts_menu，菜单）;
}
@覆盖
公共布尔onOptionsItemSelected（菜单项项）{
//处理项目选择
开关（item.getItemId（））{
案例R.id.action_settings：
//做s.th.
返回true;
默认：
返回super.onOptionsItemSelected（项目）;
}
}
}
解决方案
您需要调用 setHasOptionsMenu（真）在的onCreate（）。
有关向后兼容性最好是尽可能晚地把这个调用在的onCreate（），甚至后来在 onActivityCreated（）或类似的东西。
请参阅：https://developer.android.com/reference/android/app/Fragment.html#setHasOptionsMenu(boolean)
I am trying to have a options menu in Android Fragments. ActionBar options menu are not displaying in my Fragments.
Here is my code and I have both onCreateOptionsMenu() and onOptionSelected() function. My code doesn't shows any error. But options menu are not displaying.
package org.reachout;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import org.general.R;
public class ViewMessageFragment extends Fragment {
/* (non-Javadoc)
* @see android.support.v4.app.Fragment#onCreateView(android.view.LayoutInflater, android.view.ViewGroup, android.os.Bundle)
*/
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
if (container == null) {
// We have different layouts, and in one of them this
// fragment's containing frame doesn't exist. The fragment
// may still be created from its saved state, but there is
// no reason to try to create its view hierarchy because it
// won't be displayed. Note this is not needed -- we could
// just run the code below, where we would create and return
// the view hierarchy; it would just never be used.
return null;
}
return (LinearLayout)inflater.inflate(R.layout.viewmessages_tab_fragment_layout, container, false);
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
// TODO Auto-generated method stub
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.askexperts_menu, menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// handle item selection
switch (item.getItemId()) {
case R.id.action_settings:
// do s.th.
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
解决方案
You need to call setHasOptionsMenu(true) in onCreate().
For backwards compatibility it's better to place this call as late as possible at the end of onCreate() or even later in onActivityCreated() or something like that.
See: https://developer.android.com/reference/android/app/Fragment.html#setHasOptionsMenu(boolean)
