android动画变成素材,如何在android素材设计中实现以下动画？

我没有测试过,但它应该工作.

将此依赖关系添加到您的应用程序毕业文件中&＃xff1a;

编译’com.github.ozodrukh&＃xff1a;CircularReveal&＃xff1a;1.1.1′

在活动开始时声明这些变量&＃xff1a;

LinearLayout mRevealView;

boolean hidden &＃61; true;

在你的onCreate方法中添加它&＃xff1a;

mRevealView &＃61; (LinearLayout) findViewById(R.id.reveal_items);

mRevealView.setVisibility(View.INVISIBLE);

在您的FAB的onClick方法中,添加&＃xff1a;

int cx &＃61; (mRevealView.getLeft() &＃43; mRevealView.getRight());

int cy &＃61; mRevealView.getTop();

int radius &＃61; Math.max(mRevealView.getWidth(), mRevealView.getHeight());

//Below Android LOLIPOP Version

if (Build.VERSION.SDK_INT

SupportAnimator animator &＃61;

ViewAnimationUtils.createCircularReveal(mRevealView, cx, cy, 0, radius);

animator.setInterpolator(new AccelerateDecelerateInterpolator());

animator.setDuration(700);

SupportAnimator animator_reverse &＃61; animator.reverse();

if (hidden) {

mRevealView.setVisibility(View.VISIBLE);

animator.start();

hidden &＃61; false;

} else {

animator_reverse.addListener(new SupportAnimator.AnimatorListener() {

&＃64;Override

public void onAnimationStart() {

}

&＃64;Override

public void onAnimationEnd() {

mRevealView.setVisibility(View.INVISIBLE);

hidden &＃61; true;

}

&＃64;Override

public void onAnimationCancel() {

}

&＃64;Override

public void onAnimationRepeat() {

}

});

animator_reverse.start();

}

}

// Android LOLIPOP And ABOVE Version

else {

if (hidden) {

Animator anim &＃61; android.view.ViewAnimationUtils.

createCircularReveal(mRevealView, cx, cy, 0, radius);

mRevealView.setVisibility(View.VISIBLE);

anim.start();

hidden &＃61; false;

} else {

Animator anim &＃61; android.view.ViewAnimationUtils.

createCircularReveal(mRevealView, cx, cy, radius, 0);

anim.addListener(new AnimatorListenerAdapter() {

&＃64;Override

public void onAnimationEnd(Animator animation) {

super.onAnimationEnd(animation);

mRevealView.setVisibility(View.INVISIBLE);

hidden &＃61; true;

}

});

anim.start();

}

}

将此方法添加到您的活动中&＃xff1a;

private void hideRevealView() {

if (mRevealView.getVisibility() &＃61;&＃61; View.VISIBLE) {

mRevealView.setVisibility(View.INVISIBLE);

hidden &＃61; true;

}

}

为显示创建一个新的xml布局,称之为reveal_layout.xml并添加&＃xff1a;

xmlns:android&＃61;"http://schemas.android.com/apk/res/android"

android:layout_width&＃61;"match_parent"

android:layout_height&＃61;"match_parent"

android:layout_marginTop&＃61;"?attr/actionBarSize">

//You can include whatever layout you want here

为了这个工作,您必须将其添加到活动布局的末尾&＃xff1a;

android:layout_width&＃61;"match_parent"

android:layout_height&＃61;"wrap_content">

希望这可以帮助.