after adding popupmenu to the item menu, the application is not loaded.

popup_menu.xml

<item android:id="@+id/lightTheme" android:orderInCategory="1" android:title="@string/lightTheme" android:checkable="false" /> <item android:id="@+id/darkTheme" android:orderInCategory="2" android:title="@string/darkTheme" android:checkable="false"/>

menu_main.xml

  <item android:id="@+id/themes" android:orderInCategory="1" android:title="@string/themes" app:showAsAction="never" android:checkable="false" android:onClick="showPopup" /> <item android:id="@+id/share" android:orderInCategory="2" android:title="@string/share" app:showAsAction="never" android:checkable="false"/> <item android:id="@+id/rate_app" android:orderInCategory="3" android:title="@string/rate_app" app:showAsAction="never" android:checkable="false"/> 

  @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.themes: showPopup(item.getActionView()); break; case R.id.share: Toast.makeText(this, "v razrabotke", Toast.LENGTH_SHORT).show(); break; case R.id.rate_app: Toast.makeText(this, "v razrabotke", Toast.LENGTH_SHORT).show(); break; } return super.onOptionsItemSelected(item); } public void showPopup(View v) { PopupMenu popupTheme = new PopupMenu(this, v); popupTheme.setOnMenuItemClickListener((PopupMenu.OnMenuItemClickListener) this); popupTheme.inflate(R.menu.popup_menu); popupTheme.show(); }

logs

 08-07 00:24:11.752 18343-18343/rrrrr.rrrrr E/AndroidRuntime: FATAL EXCEPTION: main Process: rodionova.lyubov.reminder, PID: 18343 android.view.InflateException: Couldn't resolve menu item onClick handler showPopup in class rodionova.lyubov.reminder.MainActivity at android.support.v7.view.SupportMenuInflater$InflatedOnMenuItemClickListener.<init>(SupportMenuInflater.java:253) at android.support.v7.view.SupportMenuInflater$MenuState.setItem(SupportMenuInflater.java:481) at android.support.v7.view.SupportMenuInflater$MenuState.addItem(SupportMenuInflater.java:529) at android.support.v7.view.SupportMenuInflater.parseMenu(SupportMenuInflater.java:205) at android.support.v7.view.SupportMenuInflater.inflate(SupportMenuInflater.java:127) at rodionova.lyubov.reminder.MainActivity.onCreateOptionsMenu(MainActivity.java:82) at android.app.Activity.onCreatePanelMenu(Activity.java:2926) at android.support.v4.app.FragmentActivity.onCreatePanelMenu(FragmentActivity.java:364) at android.support.v7.view.WindowCallbackWrapper.onCreatePanelMenu(WindowCallbackWrapper.java:93) at android.support.v7.app.AppCompatDelegateImplBase$AppCompatWindowCallbackBase.onCreatePanelMenu(AppCompatDelegateImplBase.java:332) at android.support.v7.view.WindowCallbackWrapper.onCreatePanelMenu(WindowCallbackWrapper.java:93) at android.support.v7.app.ToolbarActionBar.populateOptionsMenu(ToolbarActionBar.java:454) at android.support.v7.app.ToolbarActionBar$1.run(ToolbarActionBar.java:55) at android.os.Handler.handleCallback(Handler.java:815) at android.os.Handler.dispatchMessage(Handler.java:104) at android.os.Looper.loop(Looper.java:207) at android.app.ActivityThread.main(ActivityThread.java:5977) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:940) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:801) Caused by: java.lang.NoSuchMethodException: showPopup [interface android.view.MenuItem] at java.lang.Class.getMethod(Class.java:624) at java.lang.Class.getMethod(Class.java:603) at android.support.v7.view.SupportMenuInflater$InflatedOnMenuItemClickListener.<init>(SupportMenuInflater.java:249) at android.support.v7.view.SupportMenuInflater$MenuState.setItem(SupportMenuInflater.java:481) at android.support.v7.view.SupportMenuInflater$MenuState.addItem(SupportMenuInflater.java:529) at android.support.v7.view.SupportMenuInflater.parseMenu(SupportMenuInflater.java:205) at android.support.v7.view.SupportMenuInflater.inflate(SupportMenuInflater.java:127) at rodionova.lyubov.reminder.MainActivity.onCreateOptionsMenu(MainActivity.java:82) at android.app.Activity.onCreatePanelMenu(Activity.java:2926) at android.support.v4.app.FragmentActivity.onCreatePanelMenu(FragmentActivity.java:364) at android.support.v7.view.WindowCallbackWrapper.onCreatePanelMenu(WindowCallbackWrapper.java:93) at android.support.v7.app.AppCompatDelegateImplBase$AppCompatWindowCallbackBase.onCreatePanelMenu(AppCompatDelegateImplBase.java:332) at android.support.v7.view.WindowCallbackWrapper.onCreatePanelMenu(WindowCallbackWrapper.java:93) at android.support.v7.app.ToolbarActionBar.populateOptionsMenu(ToolbarActionBar.java:454) at android.support.v7.app.ToolbarActionBar$1.run(ToolbarActionBar.java:55) at android.os.Handler.handleCallback(Handler.java:815) at android.os.Handler.dispatchMessage(Handler.java:104) at android.os.Looper.loop(Looper.java:207) at android.app.ActivityThread.main(ActivityThread.java:5977) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:940) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:801)

    1 answer 1

    The click handler for a menu item declared in the xml attribute android:onClick="showPopup" should be a public Activity method with the specified name and a single parameter of type MenuItem :

     public void showPopup(MenuItem item) {...}

    And choose one thing - either the attribute and method, or the processing of this element in onOptionsItemSelected