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/** OptionsMenu_exerciseActivity.java */
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package com.chenyz.android.option_menu;
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import android.app.Activity;
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import android.os.Bundle;
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import android.view.Menu;
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import android.view.MenuInflater;
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import android.view.MenuItem;
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import android.view.View;
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import android.widget.Button;
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public class OptionsMenu_exerciseActivity extends Activity {
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Button btn1, btn2;
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/** Called when the activity is first created. */
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.main);
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btn1 = (Button) findViewById(R.id.button1);
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btn2 = (Button) findViewById(R.id.button2);
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btn1.setVisibility(View.INVISIBLE);
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btn2.setVisibility(View.INVISIBLE);
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}
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@Override
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public boolean onCreateOptionsMenu(Menu menu){
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super.onCreateOptionsMenu(menu);
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MenuInflater inflater = getMenuInflater();
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inflater.inflate(R.menu.menu, menu);
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return true;
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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// Handle item selection
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switch (item.getItemId()) {
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case R.id.chrome:
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btn1.setVisibility(View.VISIBLE);
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btn2.setVisibility(View.INVISIBLE);
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return true;
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case R.id.word:
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btn2.setVisibility(View.VISIBLE);
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btn1.setVisibility(View.INVISIBLE);
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return true;
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default:
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return super.onOptionsItemSelected(item);
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}
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}
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}
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<?xml version="1.0" encoding="utf-8"?>
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<!-- /res/menu/menu.xml -->
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<menu xmlns:android="http://schemas.android.com/apk/res/android" >
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<item
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android:id="@+id/word"
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android:icon="@drawable/word"
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android:title="@string/word"
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/>
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<item
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android:id="@+id/excel"
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android:icon="@drawable/exl"
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android:title="@string/excel"
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/>
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<item
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android:id="@+id/ppt"
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android:icon="@drawable/ppt"
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android:title="@string/powerpoint"
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/>
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<item
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android:id="@+id/chrome"
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android:icon="@drawable/chrome"
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android:title="@string/chrome"
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/>
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</menu>
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<?xml version="1.0" encoding="utf-8"?>
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<!-- /res/values/strings.xml -->
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<resources>
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<string name="hello">push menu button</string>
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<string name="app_name">OptionsMenu_exercise</string>
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<string name="word">Word</string>
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<string name="excel">Excel</string>
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<string name="chrome">Chrome</string>
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<string name="powerpoint">PowerPoint</string>
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</resources>
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<?xml version="1.0" encoding="utf-8"?>
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<!-- /res/layout/main.xml -->
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:layout_width="fill_parent"
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android:layout_height="fill_parent"
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android:orientation="vertical" >
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<TextView
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android:layout_width="fill_parent"
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android:layout_height="wrap_content"
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android:text="@string/hello" />
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<Button
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android:id="@+id/button1"
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android:layout_width="fill_parent"
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android:layout_height="wrap_content"
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/>
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<Button
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android:id="@+id/button2"
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android:layout_width="fill_parent"
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android:layout_height="wrap_content"
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/>
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</LinearLayout>
