Androind 2.2 Preview 1 - Using ConstraintsLayout with GuideLine app crashes

Question

I am trying to create layout using ContraintsLayout.

In my layout I have added horizontal GuideLine.

But when I run the app it crashes and if I remove the GuideLine it works.

I also checked the APK and there is a class java.awt.Rectagle

StackStrace

java.lang.NoClassDefFoundError: Failed resolution of: Ljava/awt/Rectangle;
 at android.support.constraint.solver.widgets.Guideline.<init>(Guideline.java:43)
 at android.support.constraint.ConstraintLayout.setChildrenConstraints(ConstraintLayout.java:128)
 at android.support.constraint.ConstraintLayout.updateHierarchy(ConstraintLayout.java:106)
 at android.support.constraint.ConstraintLayout.onFinishInflate(ConstraintLayout.java:87)
 at android.view.LayoutInflater.rInflate(LayoutInflater.java:867)
 at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
 at android.view.LayoutInflater.inflate(LayoutInflater.java:518)
 at android.view.LayoutInflater.inflate(LayoutInflater.java:426)
 at android.view.LayoutInflater.inflate(LayoutInflater.java:377)
 at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:280)
 at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
 at com.infostretch.app.MainActivity.onCreate(MainActivity.java:11)
 at android.app.Activity.performCreate(Activity.java:6669)
 at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
 at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2578)
 at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2686)
 at android.app.ActivityThread.-wrap12(ActivityThread.java)
 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1440)
 at android.os.Handler.dispatchMessage(Handler.java:102)
 at android.os.Looper.loop(Looper.java:154)
 at android.app.ActivityThread.main(ActivityThread.java:5969)
 at java.lang.reflect.Method.invoke(Native Method)
 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:801)
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:691)
Caused by: java.lang.ClassNotFoundException: Didn't find class "java.awt.Rectangle" on path: DexPathList[[zip file "/data/app/com.infostretch.app-1/base.apk"],nativeLibraryDirectories=[/data/app/com.infostretch.app-1/lib/x86_64, /system/lib64, /vendor/lib64]]
 at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
 at android.support.constraint.solver.widgets.Guideline.<init>(Guideline.java:43) 
 at android.support.constraint.ConstraintLayout.setChildrenConstraints(ConstraintLayout.java:128) 
 at android.support.constraint.ConstraintLayout.updateHierarchy(ConstraintLayout.java:106) 
 at android.support.constraint.ConstraintLayout.onFinishInflate(ConstraintLayout.java:87) 
 at android.view.LayoutInflater.rInflate(LayoutInflater.java:867) 
 at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821) 
 at android.view.LayoutInflater.inflate(LayoutInflater.java:518) 
 at android.view.LayoutInflater.inflate(LayoutInflater.java:426) 
 at android.view.LayoutInflater.inflate(LayoutInflater.java:377) 
 at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:280) 
 at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140) 
 at com.infostretch.app.MainActivity.onCreate(MainActivity.java:11) 
 at android.app.Activity.performCreate(Activity.java:6669) 
 at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118) 
 at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2578) 
 at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2686) 
 at android.app.ActivityThread.-wrap12(ActivityThread.java) 
 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1440) 
 at android.os.Handler.dispatchMessage(Handler.java:102) 
 at android.os.Looper.loop(Looper.java:154) 
 at android.app.ActivityThread.main(ActivityThread.java:5969) 
 at java.lang.reflect.Method.invoke(Native Method) 
 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:801) 
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:691) 

Layout xml file

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/constraintLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/white"
    android:orientation="vertical"
    tools:layout_editor_absoluteX="0dp"
    tools:layout_editor_absoluteY="80dp">


<ImageView
    android:id="@+id/imageView"
    android:layout_width="48dp"
    android:layout_height="48dp"
    android:layout_marginStart="16dp"
    android:layout_marginTop="16dp"
    android:src="@color/accent_material_light"
    app:layout_constraintLeft_toLeftOf="@+id/constraintLayout"
    app:layout_constraintTop_toTopOf="@+id/constraintLayout"
    tools:layout_constraintLeft_creator="0"
    tools:layout_constraintTop_creator="0"
    tools:layout_editor_absoluteX="16dp"
    tools:layout_editor_absoluteY="16dp" />

<TextView
    android:id="@+id/textView11"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginEnd="16dp"
    android:layout_marginStart="16dp"
    android:layout_marginTop="16dp"
    android:text="TextView"
    app:layout_constraintLeft_toRightOf="@+id/imageView"
    app:layout_constraintRight_toRightOf="@+id/constraintLayout"
    app:layout_constraintTop_toTopOf="@+id/constraintLayout"
    tools:layout_constraintLeft_creator="0"
    tools:layout_constraintRight_creator="0"
    tools:layout_constraintTop_creator="0"
    tools:layout_editor_absoluteX="80dp"
    tools:layout_editor_absoluteY="16dp" />

<ImageView
    android:id="@+id/imageView2"
    android:layout_width="28dp"
    android:layout_height="28dp"
    android:layout_marginEnd="16dp"
    android:layout_marginTop="8dp"
    android:src="@color/abc_input_method_navigation_guard"
    app:layout_constraintRight_toRightOf="@+id/constraintLayout"
    app:layout_constraintTop_toBottomOf="@+id/textView11"
    tools:layout_constraintRight_creator="0"
    tools:layout_constraintTop_creator="0"
    tools:layout_editor_absoluteX="367dp"
    tools:layout_editor_absoluteY="40dp" />

<android.support.constraint.Guideline
    android:id="@+id/guideline"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:orientation="horizontal"
    app:relativeBegin="83dp"
    tools:layout_editor_absoluteX="0dp"
    tools:layout_editor_absoluteY="83dp" />

<LinearLayout
    android:id="@+id/linearLayout"
    android:layout_width="0dp"
    android:layout_height="120dp"
    android:layout_marginEnd="16dp"
    android:layout_marginStart="16dp"
    android:layout_marginTop="16dp"
    android:gravity="center"
    android:orientation="vertical"
    app:layout_constraintLeft_toLeftOf="@+id/constraintLayout"
    app:layout_constraintRight_toRightOf="@+id/constraintLayout"
    app:layout_constraintTop_toTopOf="@+id/guideline"
    tools:layout_constraintLeft_creator="0"
    tools:layout_constraintRight_creator="0"
    tools:layout_constraintTop_creator="0"
    tools:layout_editor_absoluteX="16dp"
    tools:layout_editor_absoluteY="99dp">

    <TextView
        android:id="@+id/textView12"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="MapView"
        tools:layout_editor_absoluteX="16dp"
        tools:layout_editor_absoluteY="230dp" />
</LinearLayout>

<LinearLayout
    android:id="@+id/linearLayout2"
    android:layout_width="0dp"
    android:layout_height="120dp"
    android:layout_marginEnd="16dp"
    android:layout_marginStart="16dp"
    android:layout_marginTop="8dp"
    android:gravity="center"
    android:orientation="vertical"
    app:layout_constraintLeft_toLeftOf="@+id/constraintLayout"
    app:layout_constraintRight_toRightOf="@+id/constraintLayout"
    app:layout_constraintTop_toBottomOf="@+id/linearLayout"
    tools:layout_constraintLeft_creator="0"
    tools:layout_constraintRight_creator="0"
    tools:layout_constraintTop_creator="0"
    tools:layout_editor_absoluteX="16dp"
    tools:layout_editor_absoluteY="227dp">

    <TextView
        android:id="@+id/textView13"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="Alert View"
        tools:layout_editor_absoluteX="16dp"
        tools:layout_editor_absoluteY="358dp" />
</LinearLayout>

<LinearLayout
    android:layout_width="0dp"
    android:layout_height="0dp"
    android:layout_marginBottom="8dp"
    android:layout_marginEnd="16dp"
    android:layout_marginStart="16dp"
    android:layout_marginTop="8dp"
    android:gravity="center"
    android:orientation="vertical"
    app:layout_constraintBottom_toTopOf="@+id/linearLayout3"
    app:layout_constraintLeft_toLeftOf="@+id/constraintLayout"
    app:layout_constraintRight_toRightOf="@+id/constraintLayout"
    app:layout_constraintTop_toBottomOf="@+id/linearLayout2"
    tools:layout_constraintBottom_creator="0"
    tools:layout_constraintLeft_creator="0"
    tools:layout_constraintRight_creator="0"
    tools:layout_constraintTop_creator="0"
    tools:layout_editor_absoluteX="16dp"
    tools:layout_editor_absoluteY="355dp">

    <TextView
        android:id="@+id/textView14"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="Recycler View"
        tools:layout_editor_absoluteX="16dp"
        tools:layout_editor_absoluteY="522dp" />
</LinearLayout>

<LinearLayout
    android:id="@+id/linearLayout3"
    android:layout_width="0dp"
    android:layout_height="48dp"
    android:orientation="horizontal"
    app:layout_constraintBottom_toBottomOf="@+id/constraintLayout"
    app:layout_constraintLeft_toLeftOf="@+id/constraintLayout"
    app:layout_constraintRight_toRightOf="@+id/constraintLayout"
    tools:layout_constraintBottom_creator="0"
    tools:layout_constraintLeft_creator="0"
    tools:layout_constraintRight_creator="0"
    tools:layout_editor_absoluteX="0dp"
    tools:layout_editor_absoluteY="554dp">

  </LinearLayout>
</android.support.constraint.ConstraintLayout>

Answer 1

Update:
This issue is fixed in Android Studio 2.2 preview 2 (download from this page).

Fixed guidelines crash on device

From the changelog.

Note that you will have to change app:orientation to android:orientation

Changed orientation attribute namespace from app to android to fix a conflict with GridLayout

(also mentioned in changelog).

---

The problem is that the Guideline class internally uses java.awt.Rectangle, and java.awt libraries are not available for android (apart from the java.awt.font class).

You cannot edit the Guideline class manually, and you shouldn't want to. The best thing for now is to report the issue at https://code.google.com/p/android/issues like Selvin said, and wait for a fix. In the meantime you cannot use the Guideline class.

Fortunately Guideline is more a convenience class so you should be able to live without it for now. If you really need something like this then you could temporarily use a regular View element that is 0dp thick and hook up constraints to that.