AndroidView v2.0 - Creating a Layout in Resource File

This section provides a tutorial example on how to create a LinearLayout object with 2 Button objects in the layout resource file. No layout objects are create in this example.

As I mentioned earlier, UI components can also be defined in layout resource files. Now let's try to build AndroidView version 2 with the LinearLayout and Button objects defined in a layout resource file.

First modify the main layout resource file, .\res\layout\main.xml:

<?xml version="1.0" encoding="utf-8"?>
<!-- AndroidView_layout.xml
 - Version 2.0 - Using layout resource file
 - Copyright (c) 2015, HerongYang.com, All Rights Reserved.
-->
<LinearLayout
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   >
   <Button
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="Submit"
   />
   <Button
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="Cancel"
   />
</LinearLayout>

Then modify the Java class code, .\src\com\herongyang\view\AndroidView.java:

/* AndroidView.java
 * Version 2.0 - Using layout resource file
 * Copyright (c) 2015, HerongYang.com, All Rights Reserved.
 */
package com.herongyang.view;

import android.app.Activity;
import android.os.Bundle;
public class AndroidView extends Activity {
   @Override
   public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);

      // Set the layout as the activity content
      setContentView(R.layout.main);
   }
}

Things to remember when using layout resource files:

After building and installing the project, what I see when running AndroidView on the emulator is similar to this:

AndroidView - Using Layout Resource Files
AndroidView - Using Layout Resource Files

Table of Contents

 About This Book

 Installing JDK 1.8 on Windows System

 Installation of Android SDK R24 and Emulator

 Installing Apache Ant 1.9 on Windows System

 Developing First Android Application - HelloAndroid

 Android Application Package (APK) Files

 Android Debug Bridge (adb) Tool

 Android File Systems

 Android 4.0.3 File Systems

 AboutAndroid - Application to Retrieve System Information

 android.app.Activity Class and Activity Lifecycle

View Objects and Layout Resource Files

 android.view.View Class - Base of User Interface Components

 View, ViewGroup, Layout, and Widget

 What Is Layout Resource File?

 AndroidView v1.0 - Creating a Layout in Java Class

AndroidView v2.0 - Creating a Layout in Resource File

 AndroidView v3.0 - Referencing Views in Resource Files

 AndroidView v3.1 - Layouts with Vertical Orientation

 AndroidView v3.2 - Layouts with Horizontal Orientation

 AndroidView v4.0 - Inserting Views to Parent Layout

 Using "adb logcat" Command for Debugging

 Build Process and Package File Content

 Building Your Own Web Browser

 Android Command Line Shell

 Samsung Galaxy Tab 3 Mini Tablet

 USB Debugging Applications on Samsung Tablet

 Android Tablet - LG-V905R

 USB Debugging Applications on LG-V905R Tablet

 Android Phone - LG-P925g

 USB Debugging Applications on LG-P925g Phone

 Outdated Tutorials

 References

 Full Version in PDF/EPUB