Preview not working

[fundroid]

Hi，

when try previewing with preview_demo_ui.xml, following exception happens：
（AndroidStudio 3.5.3）

java.lang.ClassNotFoundException: com.louiscad.splittiessample.demo.DemoUi
	at org.jetbrains.android.uipreview.ModuleClassLoader.load(ModuleClassLoader.java:201)
	at com.android.tools.idea.rendering.RenderClassLoader.findClass(RenderClassLoader.java:61)
	at org.jetbrains.android.uipreview.ModuleClassLoader.findClass(ModuleClassLoader.java:135)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at org.jetbrains.android.uipreview.ModuleClassLoader.loadClass(ModuleClassLoader.java:235)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:264)
	at splitties.views.dsl.idepreview.UiPreView.<init>(UiPreView.kt:60)
	at splitties.views.dsl.idepreview.UiPreView.<init>(UiPreView.kt:43)
	at splitties.views.dsl.idepreview.UiPreView.<init>(UiPreView.kt)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.jetbrains.android.uipreview.ViewLoader.createNewInstance(ViewLoader.java:403)
	at org.jetbrains.android.uipreview.ViewLoader.loadClass(ViewLoader.java:186)
	at org.jetbrains.android.uipreview.ViewLoader.loadView(ViewLoader.java:144)
	at com.android.tools.idea.rendering.LayoutlibCallbackImpl.loadView(LayoutlibCallbackImpl.java:309)
	at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:418)
	at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:429)
	at android.view.BridgeInflater.createViewFromTag(BridgeInflater.java:333)
	at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
	at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
	at android.view.LayoutInflater.inflate(LayoutInflater.java:394)
	at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:323)
	at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:394)
	at com.android.tools.idea.layoutlib.LayoutLibrary.createSession(LayoutLibrary.java:200)
	at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:572)
	at com.android.tools.idea.rendering.RenderTask.lambda$inflate$5(RenderTask.java:698)
	at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1590)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

I have run a full build，and how should I do to make preview working?

[Louis CAD]

You said you ran a full build. Did you try to refresh the layout preview afterwards?

If not, please, can you tell me which Splitties version your are using, and which Android Studio version as well?

[fundroid]

You said you ran a full build. Did you try to refresh the layout preview afterwards?

Yes，I did

If not, please, can you tell me which Splitties version your are using, and which Android Studio version as well?

ran with the source (commit: 0ec1a31),
Android Studio：3.5.3

[fundroid]

after branch changed to develop , problem is solved，close