Screen Shot # 1 - Android Studio Gradle Project Build View
Screen Shot # 2 - Android Studio Gradle Project View Sync
After going through the "Fundamentals of Android Studio 2.2 Development" and following the instructions in chapter 3. Everything was fine until I completed the task in the book "Fundamentals of Development" (chapter 3, page 24 in the book), which said:
As you can see from the hierarchy of the component tree, the user interface layout consists of a parent layout with one child in the form of a TextView object. If Android Studio uses the RelativeLayout manager for the project, the first step is to convert it to ConstraintLayout. ConstraintLayout is a new flexible layout that is used in most projects in this book. To achieve this conversion goal, right-click the content_android_sample entry in the Component Tree and select Convert RelativeLayout to ConstraintLayout Option, as shown below:
After completing the above training task (in Chapter 3 of Essentials), an error was presented:
Error: Failed to execute: com.android.support.constraint: constraint-layout: 1.0.0-alpha1
A rendering error was also indicated, which said:
Rendering problems The following classes were not found: - android.support.constraint.ConstraintLayout (adding a design binding library dependency, fixing the build path, editing XML, creating the class)
Any thoughts on how to fix this? See Screenshots (see above). I am new to Android Studio.
Thanks so much for your time.
I use the following OS and Android Studio versions below:
Win7 Professional 64-bit
Android Studio 2.2
Assembly # AI-145.3330264, built on October 6, 2016