How to color floating action button in android studio?

Question

I have added a floating action button in my layout but using backgroundtilt, it doesn't change the color of background.

Here my code segment

   <android.support.design.widget.FloatingActionButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/AddNewButton"
        android:background="@drawable/add"
        android:layout_margin="15dp"
        app:rippleColor="@android:color/white"
        app:fabSize="normal"
        android:clickable="true"
        app:layout_anchor="@+id/HeaderSection"
        app:layout_anchorGravity="bottom|right|end"/>

Answer 1

Try something like (not tested)

<android.support.design.widget.FloatingActionButton
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@drawable/ic_add"
    app:backgroundTint="@color/orange"
    app:borderWidth="0dp"
    app:elevation="6dp"
    app:fabSize="normal" >

and use the function setBackgroundTintList to change ..

Refer the http://stackoverflow.com/questions/30969455/android-changing-floating-action-button-color thread for help

Comments

tried this method and it was not working.

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Can you provide more detail??

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I went to the link which astha had posted, check that answer and comment on the answer you will definitely get a clue.

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I have used android:backgroundTint="@android:color/transparent" it is showing following error,
java.lang.NullPointerException
    at android.graphics.drawable.LayerDrawable$ChildDrawable.<init>(LayerDrawable.java:1723)
    at android.graphics.drawable.LayerDrawable$LayerState.<init>(LayerDrawable.java:1792)
    at android.graphics.drawable.RippleDrawable$RippleState.<init>(RippleDrawable.java:981)
    at android.graphics.drawable.RippleDrawable.createConstantState(RippleDrawable.java:972)
    at android.graphics.drawable.RippleDrawable.createConstantState(RippleDrawable.java:96)
    at android.graphics.drawable.LayerDrawable.mutate(LayerDrawable.java:1652)
    at android.graphics.drawable.RippleDrawable.mutate(RippleDrawable.java:958)
    at android.view.View.applyBackgroundTint(View.java:17413)
    at android.view.View.setBackgroundDrawable(View.java:17289)
    at android.support.design.widget.FloatingActionButton.access$201(FloatingActionButton.java:58)
    at android.support.design.widget.FloatingActionButton$1.setBackgroundDrawable(FloatingActionButton.java:143)
    at android.support.design.widget.FloatingActionButtonLollipop.setBackgroundDrawable(FloatingActionButtonLollipop.java:75)
    at android.support.design.widget.FloatingActionButton.<init>(FloatingActionButton.java:160)
    at android.support.design.widget.FloatingActionButton.<init>(FloatingActionButton.java:102)
    at sun.reflect.GeneratedConstructorAccessor501.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
    at org.jetbrains.android.uipreview.ViewLoader.createNewInstance(ViewLoader.java:458)
    at org.jetbrains.android.uipreview.ViewLoader.loadClass(ViewLoader.java:170)
    at org.jetbrains.android.uipreview.ViewLoader.loadView(ViewLoader.java:103)
    at com.android.tools.idea.rendering.LayoutlibCallbackImpl.loadView(LayoutlibCallbackImpl.java:168)
    at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:247)
    at android.view.BridgeInflater.createViewFromTag(BridgeInflater.java:171)
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
    at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:835)
    at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:70)
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:811)
    at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:394)
    at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:223)
    at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:426)
    at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:350)
    at com.android.tools.idea.rendering.RenderTask$2.compute(RenderTask.java:510)
    at com.android.tools.idea.rendering.RenderTask$2.compute(RenderTask.java:498)
    at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:888)
    at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:498)
    at com.android.tools.idea.rendering.RenderTask.access$600(RenderTask.java:72)
    at com.android.tools.idea.rendering.RenderTask$3.call(RenderTask.java:610)
    at com.android.tools.idea.rendering.RenderTask$3.call(RenderTask.java:607)
    at com.android.tools.idea.rendering.RenderService.runRenderAction(RenderService.java:362)
    at com.android.tools.idea.rendering.RenderTask.render(RenderTask.java:607)
    at com.android.tools.idea.rendering.RenderTask.render(RenderTask.java:629)
    at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager.doRender(AndroidLayoutPreviewToolWindowManager.java:652)
    at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager.access$1700(AndroidLayoutPreviewToolWindowManager.java:80)
    at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager$7$1.run(AndroidLayoutPreviewToolWindowManager.java:594)
    at com.intellij.openapi.progress.impl.CoreProgressManager$2.run(CoreProgressManager.java:152)
    at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:452)
    at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:402)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
    at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:137)
    at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager$7.run(AndroidLayoutPreviewToolWindowManager.java:589)
    at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:320)
    at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:310)
    at com.intellij.util.ui.update.MergingUpdateQueue$2.run(MergingUpdateQueue.java:254)
    at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:269)
    at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:227)
    at com.intellij.util.ui.update.MergingUpdateQueue.run(MergingUpdateQueue.java:217)
    at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
    at com.intellij.util.Alarm$Request$1.run(Alarm.java:351)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

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I'll try to do using another possible way..Thank  you