由网友(伱的心,被莪扣押了)分享简介:我想从汉堡抽屉图标,动画一个箭头,反之亦然手动,不仅当抽屉被拖动,这可能吗?我使用的是支持库appcompat-V7:21。 I want to animate the drawer icon from a burger to an arrow and vice versa manually, not only wh...
我想从汉堡抽屉图标,动画一个箭头,反之亦然手动,不仅当抽屉被拖动,这可能吗?我使用的是支持库appcompat-V7:21。
I want to animate the drawer icon from a burger to an arrow and vice versa manually, not only when drawer is being dragged, is it possible? I'm using support library appcompat-v7:21.
另外,我找不到android.support.v7.app.ActionBarDrawerToggle源$ C $ C这将有所帮助。
Also I can't find the source code of android.support.v7.app.ActionBarDrawerToggle which would helpful.
推荐答案
我找到了一种方法来制作具有简单ValueAnimator图标和 .onDrawerSlide
方法。
I found a way to animate the icon with a simple ValueAnimator and .onDrawerSlide
method.
ValueAnimator anim = ValueAnimator.ofFloat(start, end);
anim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
float slideOffset = (Float) valueAnimator.getAnimatedValue();
drawerToggle.onDrawerSlide(drawerLayout, slideOffset);
}
});
anim.setInterpolator(new DecelerateInterpolator());
anim.setDuration(300);
anim.start();
不过,也许有更好的解决方案。
But maybe there is a better solution.
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