Set the ShowAsAction attribute of the Menu of the Android learning notes, showasaction
(1) main. xml file under the res -- menu directory
<Menu xmlns: android = "http://schemas.android.com/apk/res/android"> <item android: id = "@ + id/file" android: orderInCategory = "100" android: showAsAction = "always" android: title = "file (F)"> <menu> <item android: id = "@ + id/create" android: title = "new"> </item> <item android: id = "@ + id/open" android: title = "open"> </item> </menu> </item> <item android: id = "@ + id/edit" android: orderInCategory = "100" android: showAsAction = "always" android: title = "Edit (E)"> <menu> <item android: id = "@ + id/create1" android: title = "new"> </item> <item android: id = "@ + id/open1" android: title = "open"> </item> </menu> </item> <item android: id = "@ + id/format" android: orderInCategory = "100" android: showAsAction = "always" android: title = "format (O)"> <menu> <item android: id = "@ + id/create2" android: title = "new"> </item> <item android: id = "@ + id/open2" android: title = "open"> </item> </menu>
(2) class files
package com.example.menu_showasaction;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.MenuItem;import android.widget.Toast;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}@Overridepublic boolean onMenuItemSelected(int featureId, MenuItem item) {switch (item.getItemId()) {case R.id.create:Toast.makeText(MainActivity.this, "create...", Toast.LENGTH_SHORT);break;default:break;}return super.onMenuItemSelected(featureId, item);}}