我一直在試圖使一個簡單的動態壁紙出來的引導動畫。所以基本上我在我的可繪製文件夾中有大約50個.png。我可以將動畫設置爲10-20幀,效果很好。但是一旦我將其設置爲大約30幀...我會發生OutOfMemory錯誤。我希望也許有人可以看看我的代碼,也可以舉例說明如何實現更多框架?這將有助於這麼多,我一直在看這幾個小時> <動態壁紙OutOfMemory錯誤,當我有超過30幀
這裏是我的代碼:
package com.androidnetwork.animlivewp;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.os.Handler;
import android.os.SystemClock;
import android.service.wallpaper.WallpaperService;
import android.util.Log;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
public class AnimatedLiveWallpaper extends WallpaperService {
private final Handler mHandler = new Handler();
@Override
public void onCreate() {
super.onCreate();
}
@Override
public void onDestroy() {
super.onDestroy();
}
@Override
public Engine onCreateEngine() {
return new CubeEngine();
}
class CubeEngine extends Engine {
private final Paint mPaint = new Paint();
private float mPosY;
private boolean mAnime = true;
private Matrix mMatrix = new Matrix();
private final Runnable mDrawAnim = new Runnable() {
public void run() {
drawFrame();
}
};
private boolean mVisible;
private static final int NUM_RES = 30;
private final Bitmap[] mPics = new Bitmap[NUM_RES];
CubeEngine() {
Resources res = getResources();
for (int i = 0; i< NUM_RES; i++) {
int id = res.getIdentifier("boot_00" + (100 + (i + 1)), "drawable", "com.androidnetwork.animlivewp");
mPics[i] = BitmapFactory.decodeResource(res, id);
}
}
@Override
public void onCreate(SurfaceHolder surfaceHolder) {
super.onCreate(surfaceHolder);
setTouchEventsEnabled(false);
}
@Override
public void onDestroy() {
super.onDestroy();
mHandler.removeCallbacks(mDrawAnim);
}
@Override
public void onVisibilityChanged(boolean visible) {
mVisible = visible;
if (visible) {
drawFrame();
} else {
mHandler.removeCallbacks(mDrawAnim);
}
}
@Override
public void onSurfaceChanged(SurfaceHolder holder, int format, int width, int height) {
super.onSurfaceChanged(holder, format, width, height);
float w = mPics[0].getWidth();
float h = mPics[0].getHeight();
float s = width/(float)w;
mMatrix.reset();
mMatrix.setScale(s, s);
mPosY = (height - (h * s))/2f;
drawFrame();
}
@Override
public void onSurfaceCreated(SurfaceHolder holder) {
super.onSurfaceCreated(holder);
}
@Override
public void onSurfaceDestroyed(SurfaceHolder holder) {
super.onSurfaceDestroyed(holder);
mVisible = false;
mHandler.removeCallbacks(mDrawAnim);
}
@Override
public void onOffsetsChanged(float xOffset, float yOffset,
float xStep, float yStep, int xPixels, int yPixels) {
drawFrame();
}
@Override
public void onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_MOVE) {
mAnime = !mAnime;
}
super.onTouchEvent(event);
}
void drawFrame() {
final SurfaceHolder holder = getSurfaceHolder();
Canvas c = null;
try {
c = holder.lockCanvas();
if (c != null) {
// draw something
drawAnim(c);
//drawTouchPoint(c);
}
} finally {
if (c != null) holder.unlockCanvasAndPost(c);
}
// Reschedule the next redraw
mHandler.removeCallbacks(mDrawAnim);
if (mVisible && mAnime) {
mHandler.postDelayed(mDrawAnim, 1000/10);
}
}
private int idx = 0;
void drawAnim(Canvas c) {
c.save();
c.translate(0, mPosY);
c.drawBitmap(mPics[idx], mMatrix, mPaint);
if (mAnime) ++idx;
if (idx == NUM_RES) idx = 0;
c.restore();
}
}
}
這裏是一個logcat的,如果那會在所有幫助:
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): FATAL EXCEPTION: main
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): java.lang.OutOfMemoryError: bitmap size exceeds VM budget
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at android.graphics.Bitmap.nativeCreate(Native Method)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at android.graphics.Bitmap.createBitmap(Bitmap.java:468)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at android.graphics.Bitmap.createBitmap(Bitmap.java:435)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at android.graphics.Bitmap.createScaledBitmap(Bitmap.java:340)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at android.graphics.BitmapFactory.finishDecode(BitmapFactory.java:488)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:462)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:323)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at android.graphics.BitmapFactory.decodeResource(BitmapFactory.java:346)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at android.graphics.BitmapFactory.decodeResource(BitmapFactory.java:372)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at com.androidnetwork.animlivewp.AnimatedLiveWallpaper$CubeEngine.<init>(AnimatedLiveWallpaper.java:55)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at com.androidnetwork.animlivewp.AnimatedLiveWallpaper.onCreateEngine(AnimatedLiveWallpaper.java:32)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at android.service.wallpaper.WallpaperService$IWallpaperEngineWrapper.executeMessage(WallpaperService.java:814)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at com.android.internal.os.HandlerCaller$MyHandler.handleMessage(HandlerCaller.java:61)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at android.os.Handler.dispatchMessage(Handler.java:99)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at android.os.Looper.loop(Looper.java:123)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at android.app.ActivityThread.main(ActivityThread.java:4627)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at java.lang.reflect.Method.invokeNative(Native Method)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at java.lang.reflect.Method.invoke(Method.java:521)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
08-22 19:45:05.508: ERROR/AndroidRuntime(12277): at dalvik.system.NativeStart.main(Native Method)
[動態壁紙動畫強制關閉的可能重複當我添加超過10幀?](http://stackoverflow.com/questions/3539406/live-wallpaper-animation-force-closing-when-i-add-more-than-10-frames) – 2010-08-25 08:29:12
我回答了這個問題問題和你接受了答案。那你爲什麼再問一次? – 2010-08-25 08:30:58