我在FAB按钮上设置了一个共享元素转换，它与圆形显示相结合。它启动并正常工作，但是当我想回到之前的活动时，FAB按钮消失并返回此错误。
这是我的第一个活动
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
android:layout_marginTop="?attr/actionBarSize"
android:background="@color/off_white" />
<android.support.design.widget.TabLayout
android:id="@+id/detail_tabs"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_gravity="bottom"
android:background="?attr/colorPrimary"
app:layout_anchor="@+id/appbar"
app:layout_anchorGravity="bottom"
app:tabGravity="fill"
app:tabTextColor="@color/tab_unselected_text_color"
app:tabSelectedTextColor="@color/tab_selected_text_color"
android:layoutDirection="rtl"
app:tabMode="scrollable" />
<android.support.design.widget.AppBarLayout
android:id="@+id/appbar"
android:layout_width="match_parent"
android:layout_height="256dp"
android:fitsSystemWindows="true"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="@+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginEnd="64dp"
app:expandedTitleMarginStart="48dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/backdrop"
android:transitionName="profile1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax"
android:contentDescription="" />
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/gradiant"/>
</FrameLayout>
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:transitionName="@string/transition_reveal1"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
app:layout_anchor="@id/appbar"
app:layout_anchorGravity="bottom|left"
android:src="@mipmap/ic_map"
android:layout_margin="@dimen/fab_margin"
android:clickable="true"
app:backgroundTint="@android:color/holo_blue_bright" />
这是它的类
FloatingActionButton fab=(FloatingActionButton)findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
transitionToActivity(ActivityMAp.class, v,R.string.transition_reveal1);
}
});
////
private void transitionToActivity(Class target, View viewHolder, int transitionName) {
final Pair<View, String>[] pairs = TransitionHelper.createSafeTransitionParticipants(this, false,
new Pair<>(viewHolder, this.getString(transitionName)));
startActivity(target, pairs);
}
private void startActivity(Class target, Pair<View, String>[] pairs) {
Intent i = new Intent(this, target);
Bundle b = new Bundle();
b.putString("EXTRA_MALLid",mall.getMallId());
b.putString("EXTRA_FLOORID","1");
b.putString("EXTRA_SHOP_ID","1");
i.putExtras(b);
ActivityOptionsCompat transitionActivityOptions = ActivityOptionsCompat.makeSceneTransitionAnimation(this, pairs);
this.startActivity(i, transitionActivityOptions.toBundle());
}
这是第二项活动
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:id="@+id/CoordinatorLayout01"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<FrameLayout
android:id="@+id/root_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/blue">
<android.support.v4.view.ViewPager
android:id="@+id/Tabviewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:visibility="gone" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/shared_target"
android:src="@drawable/circle_24dp"
android:transitionName="@string/transition_reveal1"
android:layout_height="48dp"
android:layout_width="48dp"
android:backgroundTint="@color/blue"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="110dp" />
</RelativeLayout>
及其类
public class ActivityMAp extends AppCompatActivity {
private String mMall;
private String mFloor;
private String mShop;
private FrameLayout rootLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle bundle = getIntent().getExtras();
mMall = bundle.getString("EXTRA_MALLid");
mFloor = bundle.getString("EXTRA_FLOORID");
mShop = bundle.getString("EXTRA_SHOP_ID");
setContentView(R.layout.activity_map);
ViewPager TabviewPager = (ViewPager) findViewById(R.id.Tabviewpager);
if (TabviewPager != null) {
setupViewPager(TabviewPager);
}
rootLayout = (FrameLayout) findViewById(R.id.root_layout);
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) {
setupWindowAnimations();
}
}
private Interpolator interpolator;
private void setupWindowAnimations() {
interpolator = AnimationUtils.loadInterpolator(this, android.R.interpolator.linear_out_slow_in);
setupEnterAnimations();
setupExitAnimations();
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void setupEnterAnimations() {
Transition transition = null;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) {
transition = TransitionInflater.from(this).inflateTransition(R.transition.changebounds_with_arcmotion);
getWindow().setSharedElementEnterTransition(transition);
transition.addListener(new Transition.TransitionListener() {
@Override
public void onTransitionStart(Transition transition) {
}
@Override
public void onTransitionEnd(Transition transition) {
// Removing listener here is very important because shared element transition is executed again backwards on exit. If we don't remove the listener this code will be triggered again.
transition.removeListener(this);
hideTarget();
animateRevealShow(findViewById(R.id.shared_target));
animateButtonsIn();
}
@Override
public void onTransitionCancel(Transition transition) {
}
@Override
public void onTransitionPause(Transition transition) {
}
@Override
public void onTransitionResume(Transition transition) {
}
});
}
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void animateRevealShow(View viewRoot) {
// int cx = (viewRoot.getLeft()) ;
int cx = (viewRoot.getLeft() + viewRoot.getRight()) / 2;
// int cy = ( viewRoot.getBottom()) ;
int cy = (viewRoot.getTop() + viewRoot.getBottom()) / 2;
int finalRadius = Math.max(rootLayout.getWidth(), rootLayout.getHeight());
Animator anim = ViewAnimationUtils.createCircularReveal(viewRoot, cx, cy, 0, finalRadius);
// viewRoot.setVisibility(View.GONE);
anim.setDuration(getResources().getInteger(R.integer.anim_duration_long));
anim.setInterpolator(new AccelerateInterpolator());
anim.start();
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void setupExitAnimations() {
Fade returnTransition = new Fade();
getWindow().setReturnTransition(returnTransition);
returnTransition.setDuration(getResources().getInteger(R.integer.anim_duration_medium));
returnTransition.setStartDelay(getResources().getInteger(R.integer.anim_duration_medium));
returnTransition.addListener(new Transition.TransitionListener() {
@Override
public void onTransitionStart(Transition transition) {
transition.removeListener(this);
animateButtonsOut();
animateRevealHide(rootLayout);
}
@Override
public void onTransitionEnd(Transition transition) {
}
@Override
public void onTransitionCancel(Transition transition) {
}
@Override
public void onTransitionPause(Transition transition) {
}
@Override
public void onTransitionResume(Transition transition) {
}
});
}
private void hideTarget() {
findViewById(R.id.shared_target).setVisibility(View.GONE);
}
private void setupViewPager(ViewPager viewPager) {
bootomsheetcontent.Adapter adapter = new bootomsheetcontent.Adapter(getSupportFragmentManager());
// adapter.addFragment(new FragMalls(),getResources().getString( R.string.malls));
// adapter.addFragment(new FragBeacons(), getResources().getString(R.string.goods));
adapter.addFragment(new FragMap(), getResources().getString(R.string.map));
viewPager.setAdapter(adapter);
}
private void animateButtonsOut() {
for (int i = 0; i < rootLayout.getChildCount(); i++) {
View child = rootLayout.getChildAt(i);
child.animate()
.setStartDelay(i)
.setInterpolator(interpolator)
.alpha(0)
.scaleX(0f)
.scaleY(0f);
}
}
private static final int DELAY = 100;
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void animateRevealHide(final View viewRoot) {
int cx = (viewRoot.getLeft() + viewRoot.getRight()) / 2;
int cy = (viewRoot.getTop() + viewRoot.getBottom()) / 2;
int initialRadius = viewRoot.getWidth();
Animator anim = ViewAnimationUtils.createCircularReveal(viewRoot, cx, cy, initialRadius, 0);
anim.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
viewRoot.setVisibility(View.INVISIBLE);
}
});
anim.setDuration(getResources().getInteger(R.integer.anim_duration_medium));
anim.start();
}
private void animateButtonsIn() {
for (int i = 0; i < rootLayout.getChildCount(); i++) {
View child = rootLayout.getChildAt(i);
child.animate()
.setStartDelay(100 + i * DELAY)
.setInterpolator(interpolator)
.alpha(1)
.scaleX(1)
.scaleY(1);
}
}
}
事实上，当我点击fab时，它会打开一个新的活动并在循环显示运行后运行共享事务。这工作正常。但是当我再次按回按钮时，它会运行循环显示而不是交易。交易后FAb消失并发出错误。
Process: ir.gfpishro.signal, PID: 20087
java.lang.IllegalArgumentException: Rect should intersect with child's bounds.
at android.support.design.widget.CoordinatorLayout.offsetChildByInset(CoordinatorLayout.java:1319)
at android.support.design.widget.CoordinatorLayout.onChildViewsChanged(CoordinatorLayout.java:1257)
at android.support.design.widget.CoordinatorLayout$OnPreDrawListener.onPreDraw(CoordinatorLayout.java:1805)
at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:944)