问题
I'm using CoordinatorLayout in my project . It works fine but there is a problem I need to fix .I'm using white actionbar icons and When the CoordinatorLayout is expanded and the background color is white, I can't see any of those icons .
I saw this in an application . when the CoordinatorLayout is expanded , the icons are dark and when scrolling down, they begin to change into white .
as you can see, when it's expanded the icons are dark and when it closes , the icons becomes white .
it begins to change when scroll down until it completely convert from dark icons to white icons
sorry for not attaching the code , here is my codes :
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.AppBarLayout
android:id="@+id/app_bar_layout"
android:layout_width="match_parent"
android:layout_height="240dp"
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="#FF4548"
app:expandedTitleMarginEnd="64dp"
app:expandedTitleMarginStart="48dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<RelativeLayout
android:id="@+id/slidelayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingTop="?attr/actionBarSize"
android:background="#fff">
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<com.viewpagerindicator.CirclePageIndicator
android:id="@+id/indicator"
android:layout_width="fill_parent"
android:layout_height="10dp"
android:layout_alignParentBottom="true"
android:layout_marginBottom="7dp" />
</RelativeLayout>
<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" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:paddingLeft="3dp"
android:layout_gravity="top"
android:paddingRight="3dp"
app:layout_collapseMode="pin">
<ImageView
android:id="@+id/imgsearch"
android:layout_width="wrap_content"
android:layout_height="?attr/actionBarSize"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginRight="2dp"
android:paddingBottom="5dp"
android:src="@drawable/ic_action_search"
android:visibility="visible" />
<ImageView
android:id="@+id/imgshare"
android:layout_width="wrap_content"
android:layout_height="?attr/actionBarSize"
android:layout_alignParentTop="true"
android:layout_marginLeft="5dp"
android:layout_toRightOf="@+id/imgsearch"
android:paddingBottom="5dp"
android:src="@drawable/ic_action_share"
android:visibility="visible" />
<ImageView
android:id="@+id/imglike"
android:layout_width="wrap_content"
android:layout_height="?attr/actionBarSize"
android:layout_alignParentTop="true"
android:layout_marginLeft="5dp"
android:layout_toRightOf="@+id/imgshare"
android:paddingBottom="5dp"
android:src="@drawable/ic_action_favorite"
android:visibility="visible" />
<RelativeLayout
android:id="@+id/sabadkharidslayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_toRightOf="@+id/imglike"
android:visibility="gone">
<ImageView
android:id="@+id/img_sabad"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginRight="10dp"
android:src="@drawable/sabad" />
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="15dp"
android:layout_marginRight="10dp"
android:background="@drawable/circle">
<TextView
android:id="@+id/text_numkharid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:gravity="right"
android:includeFontPadding="false"
android:singleLine="true"
android:textColor="#fff"
android:textSize="12sp" />
</RelativeLayout>
</RelativeLayout>
<ImageView
android:id="@+id/back"
android:layout_width="wrap_content"
android:layout_height="?attr/actionBarSize"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_marginRight="5dp"
android:paddingBottom="5dp"
android:rotationY="180"
android:src="@drawable/ic_action_back"
android:visibility="visible" />
<TextView
android:id="@+id/textVieww1"
android:layout_width="wrap_content"
android:layout_height="?attr/actionBarSize"
android:layout_marginRight="5dp"
android:layout_toLeftOf="@+id/back"
android:gravity="right|center_vertical"
android:shadowColor="#eee"
android:shadowDx="2"
android:shadowDy="2"
android:shadowRadius="4"
android:singleLine="true"
android:textColor="#fff"
android:textSize="17sp" />
<AutoCompleteTextView
android:id="@+id/editText1"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginRight="10dp"
android:layout_toLeftOf="@+id/textVieww1"
android:layout_toRightOf="@+id/sabadkharidslayout"
android:background="#fff"
android:completionThreshold="1"
android:dropDownWidth="match_parent"
android:ems="10"
android:singleLine="true"
android:gravity="right"
android:paddingBottom="5dp"
android:paddingTop="5dp"
android:textSize="12sp"
android:visibility="gone">
<requestFocus />
</AutoCompleteTextView>
</RelativeLayout>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
How can I do so ?
回答1:
You can do this similar to as shown in this Stack Overflow post. Thanks to tachyonflux
final Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
final CollapsingToolbarLayout collapsingToolbar = (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);
AppBarLayout appBar = (AppBarLayout) findViewById(R.id.appbar);
appBar.addOnOffsetChangedListener(new AppBarLayout.OnOffsetChangedListener() {
@Override
public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
if ((collapsingToolbar.getHeight() + verticalOffset) < (2 * ViewCompat.getMinimumHeight(collapsingToolbar))) {
toolbar.getNavigationIcon().setColorFilter(getResources().getColor(R.color.white), PorterDuff.Mode.SRC_ATOP);
} else {
toolbar.getNavigationIcon().setColorFilter(getResources().getColor(R.color.black), PorterDuff.Mode.SRC_ATOP);
}
}
});
Similarly you can apply it for any drawable or images within toolbar or collapsing toolbar layout.
来源：https://stackoverflow.com/questions/32809602/how-to-change-toolbar-icons-color-on-collapsing