Menu (1), menu (

Menu (1), menu (

Package com. example. menutest; import android. app. activity; import android. content. intent; import android. OS. bundle; import android. view. menu; import android. view. menuItem; public class MainActivity extends Activity {@ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. activity_main) ;}@ Overridepublic boolean onCreateOptionsMenu (Menu menu) {// getMenuInflater (). inflate (R. menu. main, menu); // load the menu definition method // use java code to create a menu, in Android, a maximum of six menus can be displayed. // The second parameter is the unique menu identifier MenuItem menuItem = menu. add (1001,100, 1, "System Menu"); // menuItem. setIcon (R. drawable. ic_launcher); // after running, the icon cannot be displayed. It is not recommended to add the icon menuItem in the later version. setTitle ("menu 1"); MenuItem menuItem2 = menu. add (1001,101, 2, "user menu"); menuItem2.setTitle ("menu 2"); MenuItem menuItem3 = menu. add (1001,102, 3, "customer menu"); menuItem3.setTitle ("menu 3"); // menuItem3.setShortcut ('C', 'C '); // set the shortcut key return true for the specified menu;} @ Overridepublic boolean onOptionsItemSelected (MenuItem item) {Intent intent = new Intent (); intent. setClass (MainActivity. this, TestActivity. class); switch (item. getItemId () {case 100: intent. putExtra ("number", 1); item. setIntent (intent); // Toast. makeText (MainActivity. this, "Select menu 1", Toast. LENGTH_SHORT ). show (); break; case 101: intent. putExtra ("number", 2); item. setIntent (intent); // Toast. makeText (MainActivity. this, "menu 2 selected", Toast. LENGTH_SHORT ). show (); break; case 102: intent. putExtra ("number", 3); item. setIntent (intent); // Toast. makeText (MainActivity. this, "menu 3 selected", Toast. LENGTH_SHORT ). show (); break; default: break;} return super. onOptionsItemSelected (item );}}

Menu jump page

Package com. example. menutest; import android. app. activity; import android. content. intent; import android. OS. bundle; import android. widget. textView; public class TestActivity extends Activity {@ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. test); TextView textView = (TextView) findViewById (R. id. textView1); Intent intent = getIntent (); int number = intent. getIntExtra ("number", 0); textView. setText ("You have clicked the menu" + number );}}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <TextView        android:id="@+id/textView1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="TextActivity"         android:textSize="30sp"/></LinearLayout>

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.menutest"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="14"        android:targetSdkVersion="17" />    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name=".MainActivity"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <activity android:name="com.example.menutest.TestActivity"></activity>    </application></manifest>

Source code download