javaobject

Hi, I've been trying to get the deezer sdk working in B4A (some functions work ok, but no sound yet). Can someone point me in the right direction here ? I don't know any Java. Java (I did manage to get it working here, but doing the whole thing in Java is not what I would prefer): String...

Hi, I just want to set path effect to the canvas paint object. Here is the code: Original Java Code: mCanvas.setPathEffect(new CornerPathEffect(10)); My Code: Dim drawingCanvas As Canvas drawingCanvas.Initialize(panelArtwork) Dim pathEffect As JavaObject...

I seem to be having a bit of a problem with the execution of this code which is in my service: Sub IsStreamActive(Stream As Int) As Boolean Dim jo As JavaObject Return jo.InitializeStatic("android.media.AudioSystem").RunMethod("isStreamActive", _ Array(Stream, 0)) End Sub I'm...

Hi, I've to integrate my app with a library that manage the communication of a device with a POS. I initialize my class object with javaObject and run methods without problems. But the lib needs a method "Register(callbacksClass)" where I pass my activity istance to manage the callbacks methods...

Greetings everyone, How do you call the following code under the .RunMethod of a JavaObject: myDoc = collection.find(eq("i", 71)).first(); The above code is an example given for mongodb tutorial in Java. I tried the following code in B4J to follow the above code: cursor =...

I have a class file name funcs, and there is a code like this Public Sub statusBarColor(color As Int) If ph.SdkVersion >= 21 Then Dim jObj As JavaObject jObj.InitializeContext Dim window As JavaObject = jObj.RunMethodJO("getWindow", Null)...

hi, when i use file explorer lib (https://www.b4x.com/android/forum/threads/class-file-explorer-with-visualization.19003/), i get diffrent path for the same selected file. for example : /mnt/sdcard/1.txt , /sdcard/1.txt, /storage/sdcard/1.txt ... above all is the same file. so i can't using...

Now and then there are JavaObject code snippets posted in the forum. Usually there are permissions required listed together with the code, but not always. Which could be because none are needed. (This very small tutorial sprung out of this thread.) This is how one determines what permissions...

I'm creating a wrapper for VBox and HBox (along with LinearLayout and UIStackView). I've completed VBox however, I have an issue with the TextField control: When I add one to the VBox, the VBox ignores its "PrefWidth" property. I'm creating the wrappers instead of using the designer because...

Hello, I'be been trying to use the JavaObject to access a Java API for a rfid reader sdk. The fist code I tried is below : #Region Project Attributes #ApplicationLabel: Test RFID #VersionCode: 1 #VersionName: 'SupportedOrientations possible values: unspecified, landscape or...

Code: #if java public static void foo() { try { @SuppressWarnings("unused") String command = "c:\\windows\\system32\\net.exe use f: " + x ; Process p = Runtime.getRuntime().exec(command); System.out.print("does not = 1"); } catch (Exception name) {...

Error: Waiting for debugger to connect... Program started. Type Network Path: example(\\Server\SharedFolder) Error occurred on line: 61 (Main) java.lang.IllegalArgumentException: object is not an instance of declaring class at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)...