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in Technique[技术] by (71.8m points)

android - Wait for other view animation end

I have the following layout snippet:

    <LinearLayout
        android:id="@+id/tagContainer"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:animateLayoutChanges="true" >

    </LinearLayout>

    <TextView
        android:id="@+id/commentLabel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/tagContainer" />

As you can see, animateLayoutChanges is set to true on the LinearLayout, so when an item is added to it, it animates the addition. This ok, but there are problems with the removal. If i remove an item, the animation still plays well, but the TextView below pops up immediately and does not wait for the animation to finish. How can i achieve this, or even better, make the TextView animate up synchronized with the LinearLayout animation?

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by (71.8m points)

You can retrieve the LayoutTransition from the view in following way:

mLinearLayout = findViewById(R.id.myLayout);
LayoutTransition layoutTransition = mLinearLayout.getLayoutTransition();
layoutTransition.addTransitionListener(new TransitionListener(){

            @Override
            public void endTransition(LayoutTransition arg0, ViewGroup arg1,
                    View arg2, int arg3) {
                switch(arg2.getId()){
                                //....
                                }
            }

            @Override
            public void startTransition(LayoutTransition transition,
                    ViewGroup container, View view, int transitionType) {
                switch(view.getId()){
                                //....
                                }

            }});

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