Toby Toby - 6 months ago 45
Android Question

Setting CollapsingToolbarLayout image programmatically

I am using a

ScrollingActivity
which comes with a
CollapsingToolbarLayout
. I want to add an
ImageView
to this layout, and be able to toggle the image programmatically, but it doesn't seem to be doing anything.

XML of my layout:

<android.support.design.widget.CollapsingToolbarLayout
android:id="@+id/toolbar_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:layout_scrollFlags="scroll|exitUntilCollapsed">

<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/AppTheme.PopupOverlay" />

<ImageView
android:id="@+id/header_logo"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="center"
android:layout_gravity="center"
app:layout_collapseMode="parallax"
/>

</android.support.design.widget.CollapsingToolbarLayout>


When I try to do something like the following, on an event:

ImageView im = (ImageView)findViewById(R.id.toolbar_layout);
im.setBitmap(image_here);


But when I trigger this event, nothing happens. I know that my image is being parsed correctly because I'm not getting any exceptions from it, in fact; I'm not getting any exceptions at all throughout this process. Am I doing something wrong here? Is there a way to refresh this Toolbar to update the image?

Answer Source

Maybe because you are calling the layout id of Toolbar to ImageView

Try Changing

ImageView im = (ImageView)findViewById(R.id.toolbar_layout);
im.setBitmap(image_here);

to

ImageView im = (ImageView)findViewById(R.id.header_logo);
im.setBitmap(image_here);
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