Question

我尝试创建选项菜单，但是在switch语句中出现错误（所有Case语句中的错误，例如R.id.regid无法解决）。

@Override
    public boolean onOptionsItemSelected(MenuItem item)
    {
        switch(item.getItemId()){
         case R.id.regid:Toast.makeText(this,"You pressed the registration      menu",Toast.LENGTH_LONG).show();
                        return true;

        case R.id.enqid:Toast.makeText(this,"You pressed the Add Enquiry Menu",Toast.LENGTH_LONG).show();
                        return true;

        case R.id.searchid:Toast.makeText(this,"You pressed the Search Students Menu",Toast.LENGTH_LONG).show();
                        return true;

        case R.id.calid:Toast.makeText(this,"You pressed the calendar Menu for Upcoming batches",Toast.LENGTH_LONG).show();
                        return true;

        case R.id.timingsid:Toast.makeText(this,"You pressed the Batch Timings Menu for Current Batches",Toast.LENGTH_LONG).show();
                        return true;

        case R.id.courseid:Toast.makeText(this,"You pressed jlc Syllabus",Toast.LENGTH_LONG).show();
                            return true;

        case R.id.facultiesid:Toast.makeText(this,"You pressed the faculties details",Toast.LENGTH_LONG).show();
                        return true;

        default:return super.onOptionsItemSelected(item);
        }
     }

        }

Optionmenuitem.xml

 <menu xmlns:android="http://schemas.android.com/apk/res/android" >



 <item 
    android:id="@+id/regid"
    android:icon="@drawable/ic_menu_reg"
    android:title="@string/reg"
    android:alphabeticShortcut="R"
    />

 <item
    android:id="@+id/enqid"
    android:icon="@drawable/ic_enquiry"
    android:title="@string/enquiry"
    android:alphabeticShortcut="E"
    />

 <item 
    android:id="@+id/searchid"
    android:icon="@drawable/searchid"
    android:title="@string/search"
    android:alphabeticShortcut="S"

    />

 <item 
    android:id="@+id/calid"
    android:icon="@drawable/ic_calendar"
    android:title="@string/upcomingbatches"
    android:alphabeticShortcut="U"
    />
 <item
    android:alphabeticShortcut="T"
    android:id="@+id/timingsid"
    android:icon="@drawable/ic_clock"
    android:title="timings"
    />
 <item 
    android:id="@+id/courseid"
    android:alphabeticShortcut="C"

    android:title="JLC Syllabus"
    />
 <item 
    android:id="@+id/facultiesid"
    android:title="faculties"
    android:icon="@drawable/ic_faculties"
    android:alphabeticShortcut="F"
    />

 </menu>

以下是控制台中显示的错误消息。

 Error: No resource found that matches the given name (at 'icon' with value '@drawable/ic_menu_reg').
 Error: No resource found that matches the given name (at 'icon' with value '@drawable/ic_enquiry').
 Error: No resource found that matches the given name (at 'icon' with value '@drawable/searchid').
 Error: No resource found that matches the given name (at 'title' with value '@string/search').
 Error: No resource found that matches the given name (at 'icon' with value '@drawable/ic_calendar').
 Error: No resource found that matches the given name (at  Error: No resource found that matches the given name (at 'icon' with value '@drawable/ic_faculties').

  Error: No resource found that matches the given name (at 'icon' with value '@drawable/ic_menu_reg').
  Error: No resource found that matches the given name (at 'icon' with value '@drawable/ic_enquiry').
  Error: No resource found that matches the given name (at 'icon' with value '@drawable/searchid').
  Error: No resource found that matches the given name (at 'title' with value '@string/search').
  Error: No resource found that matches the given name (at 'icon' with value '@drawable/ic_calendar').
  Error: No resource found that matches the given name (at 'icon' with value '@drawable/ic_clock').
  Error: No resource found that matches the given name (at 'icon' with value '@drawable/ic_faculties').

Answer 1

如果您已导入android.R，请从导入中删除它。如果它仍然不起作用，请尝试清理项目（项目 - ＆gt;清洁...）

Answer 2

奥莱特！我猜测控制台中的错误与您的代码无关。
因此，您可以尝试以下步骤：

按 Ctrl + Shift + O

清理您的项目（菜单中项目 - ＆gt; 清洁）。

现在运行您的应用。它应该工作。

让我知道它是否适合你。

Android选项菜单

2 个答案: