我正在为Android编写游戏,当GC运行时,我每隔几秒就会有明显的暂停。我已将分配减少到最小,剩下的唯一分配(根据分配跟踪器)由Bitmap.createBitmap(..)
,onTouchEvent
和onKeyEvent
生成。每帧调用Bitmap.createBitmap(..)
两次,无法删除。
现在问我的问题:是否有另一种方法来读取事件和另一种创建位图的方法?或者预先分配操作所需的内存的方法以及告诉他们使用它的方法?
InputHandler类(包含侦听器):
public class InputHandler {
private ISwarmInput mGame;
// Declare input types
public static final int USE_TOUCH = 0;
public static final int USE_MOTION = 1;
public static final int USE_KEY = 2;
public static final int USE_TOUCH_AND_KEY = 3;
private int mInputType;
public OrientationEventListener mOrientationListener;
public OnTouchListener mTouchListener;
public OnKeyListener mKeyListener;
public InputHandler(Context context, ISwarmInput game) {
mGame = game;
mTouchListener = createTouchListener();
mKeyListener = createKeyListener();
}
public OrientationEventListener createTiltListener(Context context) {
return new OrientationEventListener(context) {
@Override
public void onOrientationChanged(int orientation) {
if (mInputType == USE_MOTION) {
mGame.setAngle(orientation);
}
}
};
}
public OnTouchListener createTouchListener() {
return new OnTouchListener() {
public boolean onTouch(View v, MotionEvent event){
if (mInputType == USE_TOUCH || mInputType == USE_TOUCH_AND_KEY) {
if (readPointIn(event.getX(), event.getY())) {
mGame.addNewPoint((int) event.getX(),
(int) event.getY());
}
}
return true;
}
};
}
public OnKeyListener createKeyListener() {
return new OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (mInputType == USE_KEY || mInputType == USE_TOUCH_AND_KEY) {
switch (keyCode) {
case KeyEvent.KEYCODE_DPAD_UP:
mGame.setAngle(-90);
break;
case KeyEvent.KEYCODE_DPAD_LEFT:
mGame.setAngle(180);
break;
case KeyEvent.KEYCODE_DPAD_DOWN:
mGame.setAngle(90);
break;
case KeyEvent.KEYCODE_DPAD_RIGHT:
mGame.setAngle(0);
break;
}
}
return false;
}
};
}
}
位图创建部分
public void drawHead(Canvas canv) {
mat.reset();
nextFrame();
setRotationAndFlip(mat);
this.bmp = Bitmap.createBitmap(SPRITESHEET, Bird.mCurFrame * BIG_W[mUseBird], 0,
BIG_W[mUseBird], BIG_H[mUseBird], mat, true);
super.drawPlaceable(canv);
mat.preScale((float)0.6, (float)0.6);
this.bmp = Bitmap.createBitmap(SPRITESHEET, Bird.mCurFrame * BIG_W[mUseBird], 0,
BIG_W[mUseBird], BIG_H[mUseBird], mat, true);
}
游戏类似于蛇,你是一只鸟,你吃的每一只虫子都会让你的小鸟慢慢吞下。第二个位图适用于以下小鸟。
答案 0 :(得分:0)
对于可重复使用的输入事件,您可能需要查看此实现:http://code.google.com/p/libgdx/source/browse/trunk/backends/gdx-backend-android/src/com/badlogic/gdx/backends/android/AndroidInput.java
关于位图...也许你应该制作一些相同大小的精灵,这样你就可以重用你的位图。