Android Question Class Not Found customlistview error!

techknight · Jan 8, 2019

So, I am playing around with the BLE example app, and I keep running into a weird error.

I changed the build config from b4a.example to b4a.ble But it keeps crashing with this:

B4X:

Logger connected to:  Google Pixel
--------- beginning of main
*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
Class not found: b4a.example.customlistview, trying: b4a.ble.customlistview
main_activity_create (java line: 349)
java.lang.RuntimeException: java.lang.ClassNotFoundException: b4a.ble.customlistview
    at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:170)
    at anywheresoftware.b4a.objects.ActivityWrapper.LoadLayout(ActivityWrapper.java:209)
    at b4a.ble.main._activity_create(main.java:349)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:191)
    at b4a.ble.main.afterFirstLayout(main.java:104)
    at b4a.ble.main.access$000(main.java:17)
    at b4a.ble.main$WaitForLayout.run(main.java:82)
    at android.os.Handler.handleCallback(Handler.java:873)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:193)
    at android.app.ActivityThread.main(ActivityThread.java:6680)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: java.lang.ClassNotFoundException: b4a.ble.customlistview
    at java.lang.Class.classForName(Native Method)
    at java.lang.Class.forName(Class.java:453)
    at java.lang.Class.forName(Class.java:378)
    at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayoutHelper(LayoutBuilder.java:390)
    at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayoutHelper(LayoutBuilder.java:454)
    at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:148)
    ... 14 more
Caused by: java.lang.ClassNotFoundException: Didn't find class "b4a.ble.customlistview" on path: DexPathList[[zip file "/system/framework/org.apache.http.legacy.boot.jar", zip file "/data/app/b4a.ble-ncdiSR6k_VlAvYAxe4XasA==/base.apk"],nativeLibraryDirectories=[/data/app/b4a.ble-ncdiSR6k_VlAvYAxe4XasA==/lib/arm64, /system/lib64, /vendor/lib64]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    ... 20 more
--------- beginning of crash
*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
Class not found: b4a.example.customlistview, trying: b4a.ble.customlistview
main_activity_create (java line: 349)
java.lang.RuntimeException: java.lang.ClassNotFoundException: b4a.ble.customlistview
    at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:170)
    at anywheresoftware.b4a.objects.ActivityWrapper.LoadLayout(ActivityWrapper.java:209)
    at b4a.ble.main._activity_create(main.java:349)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:191)
    at b4a.ble.main.afterFirstLayout(main.java:104)
    at b4a.ble.main.access$000(main.java:17)
    at b4a.ble.main$WaitForLayout.run(main.java:82)
    at android.os.Handler.handleCallback(Handler.java:873)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:193)
    at android.app.ActivityThread.main(ActivityThread.java:6680)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: java.lang.ClassNotFoundException: b4a.ble.customlistview
    at java.lang.Class.classForName(Native Method)
    at java.lang.Class.forName(Class.java:453)
    at java.lang.Class.forName(Class.java:378)
    at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayoutHelper(LayoutBuilder.java:390)
    at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayoutHelper(LayoutBuilder.java:454)
    at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:148)
    ... 14 more
Caused by: java.lang.ClassNotFoundException: Didn't find class "b4a.ble.customlistview" on path: DexPathList[[zip file "/system/framework/org.apache.http.legacy.boot.jar", zip file "/data/app/b4a.ble-ncdiSR6k_VlAvYAxe4XasA==/base.apk"],nativeLibraryDirectories=[/data/app/b4a.ble-ncdiSR6k_VlAvYAxe4XasA==/lib/arm64, /system/lib64, /vendor/lib64]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    ... 20 more
*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
Class not found: b4a.example.customlistview, trying: b4a.ble.customlistview
main_activity_create (java line: 349)
java.lang.RuntimeException: java.lang.ClassNotFoundException: b4a.ble.customlistview
    at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:170)
    at anywheresoftware.b4a.objects.ActivityWrapper.LoadLayout(ActivityWrapper.java:209)
    at b4a.ble.main._activity_create(main.java:349)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:191)
    at b4a.ble.main.afterFirstLayout(main.java:104)
    at b4a.ble.main.access$000(main.java:17)
    at b4a.ble.main$WaitForLayout.run(main.java:82)
    at android.os.Handler.handleCallback(Handler.java:873)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:193)
    at android.app.ActivityThread.main(ActivityThread.java:6680)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: java.lang.ClassNotFoundException: b4a.ble.customlistview
    at java.lang.Class.classForName(Native Method)
    at java.lang.Class.forName(Class.java:453)
    at java.lang.Class.forName(Class.java:378)
    at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayoutHelper(LayoutBuilder.java:390)
    at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayoutHelper(LayoutBuilder.java:454)
    at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:148)
    ... 14 more
Caused by: java.lang.ClassNotFoundException: Didn't find class "b4a.ble.customlistview" on path: DexPathList[[zip file "/system/framework/org.apache.http.legacy.boot.jar", zip file "/data/app/b4a.ble-FkpxDEs4WNF-pgmYKo2tuQ==/base.apk"],nativeLibraryDirectories=[/data/app/b4a.ble-FkpxDEs4WNF-pgmYKo2tuQ==/lib/arm64, /system/lib64, /vendor/lib64]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    ... 20 more
*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
Class not found: b4a.example.customlistview, trying: b4a.ble.customlistview
main_activity_create (java line: 349)
java.lang.RuntimeException: java.lang.ClassNotFoundException: b4a.ble.customlistview
    at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:170)
    at anywheresoftware.b4a.objects.ActivityWrapper.LoadLayout(ActivityWrapper.java:209)
    at b4a.ble.main._activity_create(main.java:349)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:191)
    at b4a.ble.main.afterFirstLayout(main.java:104)
    at b4a.ble.main.access$000(main.java:17)
    at b4a.ble.main$WaitForLayout.run(main.java:82)
    at android.os.Handler.handleCallback(Handler.java:873)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:193)
    at android.app.ActivityThread.main(ActivityThread.java:6680)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: java.lang.ClassNotFoundException: b4a.ble.customlistview
    at java.lang.Class.classForName(Native Method)
    at java.lang.Class.forName(Class.java:453)
    at java.lang.Class.forName(Class.java:378)
    at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayoutHelper(LayoutBuilder.java:390)
    at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayoutHelper(LayoutBuilder.java:454)
    at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:148)
    ... 14 more
Caused by: java.lang.ClassNotFoundException: Didn't find class "b4a.ble.customlistview" on path: DexPathList[[zip file "/system/framework/org.apache.http.legacy.boot.jar", zip file "/data/app/b4a.ble-jo6nN43Wq7whM3BlNEw__w==/base.apk"],nativeLibraryDirectories=[/data/app/b4a.ble-jo6nN43Wq7whM3BlNEw__w==/lib/arm64, /system/lib64, /vendor/lib64]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    ... 20 more

WTF?? It keeps looking for b4a.example, but it doesnt exist! there is no references to it anywhere. Why is this happening?

DonManfred · Jan 8, 2019

You are using an layout from another app. Maybe just copied.
edit the layout, remove the CLV and add it again. Save the layout. Try again.

techknight · Jan 8, 2019

Yea, but I dont see any b4a.example references inthe designer? Im confused.

DonManfred · Jan 8, 2019

techknight said:
b4a.example references inthe designer?

it is saved in the bal file. In your case you are using a layoutfile from an app with the packageme b4a.example in a app with packagename
b4a.ble.customlistview

techknight · Jan 8, 2019

Deleting and readding the CLV worked. But again, I dont know why it did. My guess is there is more abstraction that I cant see? This is going to cause a problem going forward for me in the future because I use the same layout in some of my other apps.

Erel · Jan 8, 2019

Can you upload the project?

techknight · Jan 8, 2019

It is the BLE Example that all I did was change the package name in the build config. that is what broke it.

Erel · Jan 8, 2019

I see it too. It is related to the layout file actually referencing the old code module CustomListView and not a library.

Will update the example with the same change you did. Remove the custom view and add a new one.

techknight · Jan 8, 2019

Ahhh See now that makes sense. Thanks.

Android Question Class Not Found customlistview error!

techknight

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Android Question Class Not Found customlistview error!

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