MicrophoneRecorderView.java 文件源码

public void hide(float x) {
  this.lastPositionX = x;

  float offset          = getOffset(x);
  int   widthAdjustment = getWidthAdjustment();

  AnimationSet animation = new AnimationSet(false);
  Animation scaleAnimation = new ScaleAnimation(1, 0.5f, 1, 0.5f,
                                                Animation.RELATIVE_TO_SELF, 0.5f,
                                                Animation.RELATIVE_TO_SELF, 0.5f);

  Animation translateAnimation = new TranslateAnimation(Animation.ABSOLUTE, offset + widthAdjustment,
                                                        Animation.ABSOLUTE, widthAdjustment,
                                                        Animation.RELATIVE_TO_SELF, -.25f,
                                                        Animation.RELATIVE_TO_SELF, -.25f);

  scaleAnimation.setInterpolator(new AnticipateOvershootInterpolator(1.5f));
  translateAnimation.setInterpolator(new DecelerateInterpolator());
  animation.addAnimation(scaleAnimation);
  animation.addAnimation(translateAnimation);
  animation.setDuration(ANIMATION_DURATION);
  animation.setFillBefore(true);
  animation.setFillAfter(false);
  animation.setInterpolator(new AnticipateOvershootInterpolator(1.5f));

  recordButtonFab.setVisibility(View.GONE);
  recordButtonFab.clearAnimation();
  recordButtonFab.startAnimation(animation);
}