Android比例尺可绘制，无质量泄漏

Question

I have an image 1280x800 and put it to ImageView with

animationView.setScaleType(ScaleType.FIT_XY);

ImageView on the screen have dimensions 256x160

When i apply animation to this view, actually

    final AnimatorSet set = new AnimatorSet();
    set.
            play(ObjectAnimator.ofFloat(animationView, View.SCALE_X, 1f, xScale)).
            with(ObjectAnimator.ofFloat(animationView, View.SCALE_Y, 1f, yScale)).
            with(ObjectAnimator.ofFloat(animationView, View.TRANSLATION_X, currentLocation.x, screenSize.x / 2 - imageWidth / 2)).
            with(ObjectAnimator.ofFloat(animationView, View.TRANSLATION_Y, currentLocation.y - actionBarHeight, screenSize.y / 2 - imageHeight / 2)).
            with(ObjectAnimator.ofFloat(actionBarView, View.TRANSLATION_Y, 0, -actionBarHeight));
    set.setDuration(500);
    set.setInterpolator(new DecelerateInterpolator());
    set.start();

xScale and yScale equals ~ 7 of both values. When i scale up this view in 7 times i have a big trouble with quality of drawable inside this view. How can i fix that?

Answer 1

Just force your ImageView not to scale the resource when its loading it into the view. Use the following code for setting the ImageView 's resource:

Options options = new BitmapFactory.Options();
options.inScaled = false;
Bitmap bitmap = BitmapFactory.decodeResource(getContext().getResources(), resId, options);
mImageView.setImageBitmap(bitmap);

And remember to recycle the bitmap when your ImageView is no longer being used