Android Studio - Gradle build failing - Java Heap Space

I noticed that when I open the gradle.properties folder in my Android Studios project, and hovered over any line, it gave a warning about "unused property". That put me on the path to do another google search for "Android Studio gradle.properties unused property" and I found this:

gradle.properties. Unused property

and this:

JVM arguments gradle cannot be set in gradle.properties file for Android Studio 2.1.1

The issue is that, at least for me, Windows+Android Studio seems to ignore the gradle.properties file in my project. You need to create one here: C:\Users\<username>\.gradle\gradle.properties

Then, as suggested in other threads such as the one linked to by @Kevin Tan above, I was able to increase the memory by adding a line such as this:

org.gradle.jvmargs=-XX:MaxHeapSize=256m -Xmx256m

Now I no longer hit the issue

Use this in gradle.properties

org.gradle.parallel=true
org.gradle.daemon=true
org.gradle.jvmargs=-Xmx12800M
org.gradle.configureondemand=true

Worked for me.

By default, Android Studio has a maximum heap size of 1280MB. If you are working on a large project, or your system has a lot of RAM, you can improve performance by increasing the maximum heap size for Android Studio processes, such as the core IDE, Gradle daemon, and Kotlin daemon.

If you use a 64-bit system that has at least 5 GB of RAM, you can also adjust the heap sizes for your project manually. To do so, follow these steps:

Click File > Settings from the menu bar (or Android Studio > Preferences on macOS). Click Appearance & Behavior > System Settings > Memory Settings.

For more Info click

https://developer.android.com/studio/intro/studio-config