The transition of the ugly fragment to the surface with the overlay

Question

In my application, one of the fragments draws a map as a surface with an overlay for buttons and text.

Most of the other snippets are lists. My problem is that during the transition between the map and another fragment, the ugly black rectangles are visible on the map where the text and buttons are placed. This becomes more pronounced when moving to the map, although this happens in both directions. I use slide-left / slide-right animation, which works great in all other respects. I tried other animations and animations. Setting text and buttons invisible before the transition also does not help, since the views are still present in the overlay.

If anyone has ideas on how to achieve a clean fragment transition, this will be greatly appreciated. I use the support fragment manager.

Here is my code (there are significantly more text and buttons than shown below):

layout xml file:

<?xml version="1.0" encoding="utf-8"?>


<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/mapframeview"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
 >


<com.mypackage.MapView 
    android:id="@+id/maptileview"  
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
</com.mypackage.MapView>

<RelativeLayout  xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/mapoverlay"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" >

   <TextView
    android:id="@+id/titletext"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_alignParentTop="true"
    android:paddingTop="10dp"
    android:textColor="#FFFFFF"
    android:textSize="24dp"
    android:textStyle="bold" />

    <ImageButton
    android:id="@+id/bookButton"
    android:onClick="onClickBookButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_alignParentRight="true"
    android:paddingTop="15dp"
    android:paddingRight="15dp"
    android:background="@android:color/transparent"
    android:src="@drawable/bookbutton">
    </ImageButton>

  </RelativeLayout>

 </FrameLayout>        

fragment transition code:

 private void startNextFragment(Fragment newFragment, String fragment tag) {

FragmentManager fragmentManager = getSupportFragmentManager();

    FragmentTransaction transaction = 
            fragmentManager.beginTransaction();

    transaction.setCustomAnimations(R.layout.slideinright,
                                        R.layout.slideoutleft,  
                                        R.layout.slideinleft, 
                                        R.layout.slideoutright);

    transaction.replace(R.id.fragment_container, newFragment, fragmentTag);
    transaction.addToBackStack(null);

    // Commit the transaction
    transaction.commit();
}

xmls animation:

<?xml version="1.0" encoding="utf-8"?>
<!--
/* //device/apps/common/res/anim/slide_in_right.xml */
-->

<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="50%p" android:toXDelta="0"
        android:duration="@android:integer/config_mediumAnimTime"/>
<alpha android:fromAlpha="0.0" android:toAlpha="1.0"
        android:duration="@android:integer/config_mediumAnimTime" />
</set>

<?xml version="1.0" encoding="utf-8"?>
<!--
/* //device/apps/common/res/anim/slide_out_left.xml*/
-->

<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="0" android:toXDelta="-50%p"
        android:duration="@android:integer/config_mediumAnimTime"/>
<alpha android:fromAlpha="1.0" android:toAlpha="0.0"
        android:duration="@android:integer/config_mediumAnimTime" />
</set>

Answer 1

If you are using SurfaceView, make the background transparent.

android:background="@android:color/transparent"

It worked for me, the flicker disappeared.