BottomAppBar throws IllegalArgumentException

Question

I'm using the latest Material Design library for android and following the this documentation to create BottomAppBar.

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".fragments.ARFragment">

    <com.google.android.material.bottomappbar.BottomAppBar
        android:id="@+id/bar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:backgroundTint="@color/blue"/>

</androidx.coordinatorlayout.widget.CoordinatorLayout>

Here's the exception. Full log is here.

java.lang.IllegalArgumentException: Invalid Region.Op - only INTERSECT and DIFFERENCE are allowed
    at android.graphics.Canvas.checkValidClipOp(Canvas.java:779)
    at android.graphics.Canvas.clipRect(Canvas.java:826)
    at com.google.android.material.shape.MaterialShapeDrawable.prepareCanvasForShadow(MaterialShapeDrawable.java:850)
    at com.google.android.material.shape.MaterialShapeDrawable.draw(MaterialShapeDrawable.java:746)
    at android.view.View.getDrawableRenderNode(View.java:20463)
    at android.view.View.drawBackground(View.java:20399)

I saw the other StackOverFlow threads similar to this exception but there was no answer for me because the exception is in the library.

I'm testing on Android P.

Have you seen [this](https://stackoverflow.com/questions/50231950/what-is-the-best-alternative-to-canvas-cliprect-with-region-op-replace)? — Jordan, Nov 26 '18 at 04:31

score 1 · Accepted Answer · answered Nov 26 '18 at 04:56

Check this Include Google Maven repository in build.gradle.

allprojects {
repositories {
  jcenter()
  maven {
    url "https://maven.google.com"
  }
}
}

Place material components dependency in your build.gradle. Keep in mind that material version is regularly updating.

implementation 'com.google.android.material:material:1.0.0-alpha1'

Set compileSdkVersion, and targetSdkVersion to the latest API version targetting Android P which is 28.

android {
compileSdkVersion 28
defaultConfig {
    applicationId "com.xxx"
    minSdkVersion 19
    targetSdkVersion 28
    versionCode 0
    versionName "1"

}

The problem for me was not using the latest version. – Burak Nov 26 '18 at 16:49 — Burak, Nov 26 '18 at 16:49

BottomAppBar throws IllegalArgumentException

1 Answers1