Step 1: Download the source code of print hello - Download
Step 2: Now open directory HelloToLivewallpaper>app>src>main>java>com>example>hellotolivewallpaper>
package com.example.hellotolivewallpaper; import android.util.DisplayMetrics; import android.util.Log; import android.view.WindowManager; import org.andengine.engine.camera.Camera; import org.andengine.engine.options.EngineOptions; import org.andengine.engine.options.ScreenOrientation; import org.andengine.engine.options.resolutionpolicy.RatioResolutionPolicy; import org.andengine.entity.scene.IOnSceneTouchListener; import org.andengine.entity.scene.Scene; import org.andengine.entity.scene.background.Background; import org.andengine.entity.sprite.AnimatedSprite; import org.andengine.extension.ui.livewallpaper.BaseLiveWallpaperService; import org.andengine.input.touch.TouchEvent; import org.andengine.opengl.texture.TextureOptions; import org.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlas; import org.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlasTextureRegionFactory; import org.andengine.opengl.texture.region.ITiledTextureRegion; import org.andengine.util.adt.color.Color; import java.io.IOException; public class HelloToLiveWallpaperService extends BaseLiveWallpaperService implements IOnSceneTouchListener { private static final String TAG = "HelloTo"; private static float CAMERA_WIDTH = 480; private static float CAMERA_HEIGHT = 800; private Scene mScene; private ITiledTextureRegion mCircleTR; @Override public EngineOptions onCreateEngineOptions() { try { final DisplayMetrics displayMetrics = new DisplayMetrics(); WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE); wm.getDefaultDisplay().getMetrics(displayMetrics); wm.getDefaultDisplay().getRotation(); CAMERA_WIDTH = displayMetrics.widthPixels; CAMERA_HEIGHT = displayMetrics.heightPixels; } catch (Exception e) { Log.e(TAG, "onCreateEngineOptions " + e.toString()); } //create a camera Camera mCamera = new Camera(0, 0, CAMERA_WIDTH, CAMERA_HEIGHT); //engine options return new EngineOptions(true, ScreenOrientation.PORTRAIT_FIXED, new RatioResolutionPolicy(CAMERA_WIDTH, CAMERA_HEIGHT), mCamera); } @Override public void onCreateResources(OnCreateResourcesCallback pOnCreateResourcesCallback) throws IOException { //create texture BitmapTextureAtlas textureAtlas = new BitmapTextureAtlas(getTextureManager(), 216, 72, TextureOptions.BILINEAR); this.mCircleTR = BitmapTextureAtlasTextureRegionFactory.createTiledFromAsset(textureAtlas, getAssets(), "gfx/circle_rgb.png", 0, 0, 3, 1); this.getEngine().getTextureManager().loadTexture(textureAtlas); pOnCreateResourcesCallback.onCreateResourcesFinished(); } @Override public void onCreateScene(OnCreateSceneCallback pOnCreateSceneCallback) throws IOException { //create a scene mScene = new Scene(); //create a white background mScene.setBackground(new Background(Color.WHITE)); //create red sprites AnimatedSprite mRedSprite = new AnimatedSprite(CAMERA_WIDTH / 3, CAMERA_HEIGHT / 2, mCircleTR, this.getVertexBufferObjectManager()) { @Override public boolean onAreaTouched(TouchEvent pSceneTouchEvent, float pTouchAreaLocalX, float pTouchAreaLocalY) { mScene.setBackground(new Background(Color.RED)); return true; } }; //create green sprite AnimatedSprite mGreenSprite = new AnimatedSprite(CAMERA_WIDTH / 2, CAMERA_HEIGHT / 2, mCircleTR, this.getVertexBufferObjectManager()) { @Override public boolean onAreaTouched(TouchEvent pSceneTouchEvent, float pTouchAreaLocalX, float pTouchAreaLocalY) { mScene.setBackground(new Background(Color.GREEN)); return true; } }; //create blue sprite AnimatedSprite mBlueSprite = new AnimatedSprite(2 * CAMERA_WIDTH / 3, CAMERA_HEIGHT / 2, mCircleTR, this.getVertexBufferObjectManager()) { @Override public boolean onAreaTouched(TouchEvent pSceneTouchEvent, float pTouchAreaLocalX, float pTouchAreaLocalY) { mScene.setBackground(new Background(Color.BLUE)); return true; } }; //set particular texture tiles mRedSprite.setCurrentTileIndex(0); mGreenSprite.setCurrentTileIndex(1); mBlueSprite.setCurrentTileIndex(2); //attach our sprites to the scene mScene.attachChild(mRedSprite); mScene.attachChild(mGreenSprite); mScene.attachChild(mBlueSprite); //register sprites touch areas mScene.registerTouchArea(mRedSprite); mScene.registerTouchArea(mGreenSprite); mScene.registerTouchArea(mBlueSprite); //register scene touch listener mScene.setOnSceneTouchListener(this); pOnCreateSceneCallback.onCreateSceneFinished(mScene); } @Override public void onPopulateScene(Scene pScene, OnPopulateSceneCallback pOnPopulateSceneCallback) throws IOException { pOnPopulateSceneCallback.onPopulateSceneFinished(); } @Override public boolean onSceneTouchEvent(Scene pScene, TouchEvent pSceneTouchEvent) { //handling scene touch event if (pScene == mScene) { mScene.setBackground(new Background(Color.WHITE)); } return false; } }
Step 3: Now replace the code of HelloToLiveWallpaperService.java with this code.
circle_rgb.png
Step 4: Add graphical resources in HelloToLivewallpaper>app>src>main>assets>gfx>
Run the app...
Output:
HAPPY CODING...
