Android 动态壁纸模板。

/** * LiveWallpaper Launcher And Preference Template * The MIT License * copyright (c) 2011 mdlab.jp * @author itoz */ package jp.mdlab.livewallpaper.template; import android.content.SharedPreferences; import android.content.res.Resources; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.os.Handler; import android.service.wallpaper.WallpaperService; import android.view.SurfaceHolder; import android.widget.Toast; public class Main extends WallpaperService { // 設定画面クラスのパス public static final String SHARED_PREFS_NAME = "jp.mdlab.livewallpaper.Preference"; @Override public void onCreate() { super.onCreate(); } @Override public void onDestroy() { super.onDestroy(); } @Override public Engine onCreateEngine() { return new MyEngine(getResources()); } public class MyEngine extends Engine implements SharedPreferences.OnSharedPreferenceChangeListener { SharedPreferences prefs; private final Handler handler = new Handler(); private boolean visible; // ================================================================ /** * コンストラクタ */ public MyEngine(Resources r) { // 設定画面を取得 prefs = Main.this.getSharedPreferences(SHARED_PREFS_NAME, 0); // 設定画面の変更をリスナーする prefs.registerOnSharedPreferenceChangeListener(this); } // ================================================================ /** * 設定画面が変更されたときに呼ばれる */ @Override public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) { // --------------------------- // 設定パネルの値を取得する // --------------------------- // list_keyを取得 String listStr = prefs.getString("list_key", ""); // checkbox_keyを取得 Boolean checkboxStr = prefs.getBoolean("checkbox_key", false); // edittext_keyを取得 String edittextStr = prefs.getString("edittext_key", ""); // --------------------------- // 値を表示する // --------------------------- Toast.makeText(getApplicationContext(), "[設定値]" + "\nリスト=" + listStr + "\nチェックボックス=" + checkboxStr + "\nエディットテキスト=" + edittextStr, Toast.LENGTH_SHORT).show(); } // ================================================================ /** * 描画 */ void drawFrame() { SurfaceHolder holder = getSurfaceHolder(); Canvas c = holder.lockCanvas(); // --------------------------- // 描画処理など // --------------------------- Paint p = new Paint(); p.setTextSize(30); p.setAntiAlias(true); c.drawColor(Color.BLACK); c.drawText("HELLO!", 10, 150, p); c.drawText("LIVEWALLPAPER!", 10, 190, p); holder.unlockCanvasAndPost(c); handler.removeCallbacks(drawThread); if (visible) handler.postDelayed(drawThread, 25); } private final Runnable drawThread = new Runnable() { @Override public void run() { drawFrame(); } }; @Override public void onCreate(SurfaceHolder surfaceHolder) { super.onCreate(surfaceHolder); } @Override public void onDestroy() { super.onDestroy(); handler.removeCallbacks(drawThread); } @Override public void onVisibilityChanged(boolean visible) { this.visible = visible; if (visible) { drawFrame(); } else { handler.removeCallbacks(drawThread); } } @Override public void onSurfaceChanged(SurfaceHolder holder, int format, int width, int height) { super.onSurfaceChanged(holder, format, width, height); drawFrame(); } @Override public void onSurfaceCreated(SurfaceHolder holder) { super.onSurfaceCreated(holder); } @Override public void onSurfaceDestroyed(SurfaceHolder holder) { super.onSurfaceDestroyed(holder); visible = false; handler.removeCallbacks(drawThread); } @Override public void onOffsetsChanged(float xOffset, float yOffset, float xStep, float yStep, int xPixels, int yPixels) { drawFrame(); } @Override public void onDesiredSizeChanged(int desiredWidth, int desiredHeight) { drawFrame(); } } }