我有一个属性动画,但它并不流畅,即我在动画中跳跃。我尝试使用动画器的参数,例如插值器、持续时间和帧延迟,但无法获得平滑的效果。有没有人有一些技巧/例子?这是我当前设置动画师的代码:
rotationAnimator=new ObjectAnimator();
rotationAnimator.setTarget(rotationController);
rotationAnimator.setPropertyName("mapRotation");
rotationAnimator.setInterpolator(new LinearInterpolator());
ValueAnimator.setFrameDelay(24);
rotationAnimator.setDuration(ROTATION_DURATION);
rotationAnimator.setRepeatCount(ValueAnimator.INFINITE);
rotationAnimator.setRepeatMode(ValueAnimator.RESTART);
(还有一个调用setFloatValues
,但它在代码的后面,在我开始动画之前)
编辑:我被要求展示我正在制作的动画,所以这里是:
这是从动画中获取值的 setter 函数:
public void setMapRotation(float rotationDegrees)
{
if ((rotationAnimator!=null)&&(rotationAnimator.isRunning()))
rotationAnimator.cancel();
rotationDegrees%=360;
if (rotationDegrees<0) rotationDegrees+=360;
rotationView.setRotationDegrees(rotationDegrees);
if (rotationDegrees!=oldRotationDegrees)
{
notifyRotationListeners();
oldRotationDegrees=rotationDegrees;
}
}
如果您查看代码,您会看到另一个函数被调用 (setRotationDegrees),所以它是:
public void setRotationDegrees(float rotationDegrees)
{
this.rotationDegrees=rotationDegrees%360;
if (this.rotationDegrees<0) this.rotationDegrees+=360;
Log.i("MapView","View degrees: " + this.rotationDegrees);
invalidate();
}
这就是失效后发生的情况:
@Override protected void dispatchDraw(Canvas canvas)
{
Log.i("MapView","Redrawing");
int saveCount=canvas.save(Canvas.MATRIX_SAVE_FLAG);
canvas.rotate(rotationDegrees,getWidth()/2,getHeight()/2);
canvas.setDrawFilter(drawFilter);
canvas.getMatrix(rotationMatrix);
super.dispatchDraw(canvas);
canvas.restoreToCount(saveCount);
}
我不知道这里有没有特别重的东西,但我可能错了......