autojs点赞按钮动画

drawBg(that.roundRectPaint, that.fraction, canvas, that.width, that.height);

function drawBg(paint, fraction, canvas, width, height) {
  let left = 0;
  let top = 0;
  let right = width;
  let bottom = height;
  // scale
  let scaleX = leap(1, 0.9, 1, fraction);
  let scaleY = scaleX;
  let pivotX = width / 2;
  let pivotY = height / 2;
  canvas.scale(scaleX, scaleY, pivotX, pivotY);
  let radius = 100;
  canvas.drawRoundRect(left, top, right, bottom, radius, radius, paint);
}

function drawBg(paint, fraction, canvas, width, height) 

function leap(a, b, c, fraction) {
  if (fraction <= 0.5) {
    return MathUtils.lerp(a, b, fraction * 2);
  } else {
    let tempFraction = fraction - 0.5;
    return MathUtils.lerp(b, c, tempFraction * 2);
  }
}

com.google.android.material.math.MathUtils.lerp

public static float lerp (float start, 
                float stop, 
                float amount)

CustomView.prototype.render = function () {
  let that = this;
  return JavaAdapter(
    android.view.View,
    {
      onDraw: function (canvas) {...}

onMeasure: function (widthMeasureSpec, heightMeasureSpec) {
  this.super$onMeasure(heightMeasureSpec, widthMeasureSpec);
  this.setMeasuredDimension(this.getMeasuredHeight(), this.getMeasuredWidth());
  that.width = this.getMeasuredWidth();
  that.height = this.getMeasuredHeight();
},onMeasure: function (widthMeasureSpec, heightMeasureSpec) {

let drawableId = "ic_favorite_black_48dp";
let imgId = resources.getIdentifier(drawableId, "drawable", context.getPackageName());
let drawable = resources.getDrawable(imgId);
let bitmap = drawable.getBitmap();

bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true);

var img = com.stardust.autojs.core.image.ImageWrapper.ofBitmap(bitmap);
let width = that.width;
let height = that.height;
let fx = 1;
if (width > height) {
  fx = height / img.width;
} else {
  fx = width / img.width;
}
let fy = fx;
let img2 = images.scale(img, fx, fy);

events.on("exit", function () {
  img2.recycle();
});
setTimeout(() => {
  img.recycle();
}, 666);

let srcInMode = PorterDuffXfermode(PorterDuff.Mode.SRC_IN);
// let drawableCanvas = Canvas(iconBitmap);
let drawableCanvas = null;
function tintBitmap(paint, iconBitmap) {
  // change to src in
  paint.xfermode = srcInMode;
  drawableCanvas.drawRect(0, 0, iconBitmap.width, iconBitmap.height, paint);
  paint.xfermode = null;
}

//  创建动画
function createAnimator(that) {
  //动画
  let animator = ValueAnimator.ofFloat(0, 1);
  animator.setDuration(config.duration);
  animator.setInterpolator(new BounceInterpolator());
  animator.addListener(
    new AnimatorListenerAdapter({
      onAnimationStart: function (animation) {
        that.uiState = UIState.Animating;
      },
      onAnimationEnd: function (animation) {
        that.uiState = that.uiStateStart == UIState.Like ? UIState.UnLike : UIState.Like;
      },
      onAnimationCancel: function (animation) {},
    })
  );
  animator.addUpdateListener(
    new ValueAnimator.AnimatorUpdateListener({
      onAnimationUpdate: function (valueAnimator) {
        let value = valueAnimator.getAnimatedValue();
        that.fraction = value;
        that.view.invalidate();
      },
    })
  );
  return animator;
}

canvas.scale(scaleX, scaleY, pivotX, pivotY);

animator.setInterpolator(new BounceInterpolator());

(function () {
  util.extend(CustomView, ui.Widget);
  function CustomView() {
    ui.Widget.call(this);
  }
  CustomView.prototype.render = function () {
    return JavaAdapter(
      android.view.View,
      {
        onDraw: function (canvas) {
          this.super$onDraw(canvas);
          ...
        },
        onMeasure: function (widthMeasureSpec, heightMeasureSpec) {
          this.super$onMeasure(heightMeasureSpec, widthMeasureSpec);
          this.setMeasuredDimension(this.getMeasuredHeight(), this.getMeasuredWidth());
        },
        onSizeChanged: function (w, h, oldW, oldH) {
          this.super$onSizeChanged(w, h, oldW, oldH);
        },
      },
      activity
    );
  };
  CustomView.prototype.onViewCreated = function (view) {};
  CustomView.prototype.onFinishInflation = function (view) {};
  ui.registerWidget("like-button", CustomView);
  return CustomView;
})();