Develop Reference

NativeScript Build - Error executing Static Binding Generator: Class not found android.support.v4.view.ViewPager.OnPageChangeListener

I'm new to NativeScript and took over a project recently upgraded from NativeScript 4 to 6. Here is my environment detials:
Windows 10
Node v16.6.1
NativeScript 8.0.2
Android Studio 11 (with al
the recommended updates to date)
VS Code 1.58.2
I can create a new Native script project with "tns create" and build/run it in the simulator just fine. However, when I try to run the project the build throws the following error:
java.lang.RuntimeException: Class not found android.support.v4.view.ViewPager.OnPageChangeListener
at org.nativescript.staticbindinggenerator.Generator.getClass(Generator.java:551)
at org.nativescript.staticbindinggenerator.Generator.getInterfacesFromCache(Generator.java:534)
at org.nativescript.staticbindinggenerator.Generator.writeBinding(Generator.java:283)
at org.nativescript.staticbindinggenerator.Generator.generateBinding(Generator.java:171)
at org.nativescript.staticbindinggenerator.Generator.processRows(Generator.java:234)
at org.nativescript.staticbindinggenerator.Generator.generateBindings(Generator.java:121)
at org.nativescript.staticbindinggenerator.Generator.writeBindings(Generator.java:97)
at org.nativescript.staticbindinggenerator.Main.main(Main.java:55)
Here is the run command I'm using: "tns run android --emulator"
I have tried tons of things and searches but no luck resolving this issue.

So I had an idea and searched with a different search engine than I normally use. I did find some ideas which helped me resolved the issue.
I had previously searched in VSCode for variations on "android.support.v4.view.ViewPager.OnPageChangeListener", but only found the log file with the error. Then I learned you have to change the filter options of the find in file search otherwise the files you are looking for can be excluded from the search results. I also used Baregrep to confirm I was getting everything.
I fixed the issue by replacing all occurrences of:
android.support.v4.view.ViewPager with androidx.viewpager.widget.ViewPager
Also you may need to install widgets:npm i tns-core-modules-widgets
Since the files where I made the changes were all non-project files (many of them in the node_modules directory) there is probably something else that involves updating Node or NativeScript that may solve this as well.
If someone else figures that out, I'll be watching this thread for updates, and thanks in advance!
Fissh

Error while compiling Web RTC for Android

I am developing app of video chat in Web RTC.
I am going through documentation of Web RTC.
I have followed all steps mentioned for Getting the Code
export GYP_DEFINES="OS=android"
fetch --nohooks webrtc_android
gclient sync
I have all src code of web rtc in my root directory. As per documentation say we have to compile source to use in our application. Here i got error while compiling source using following command.
$ gn gen out/Default --args='target_os="android" target_cpu="arm"'
ERROR at //build/config/android/internal_rules.gni:636:3: Can't load input file.
import("//third_party/ijar/ijar.gni")
^-----------------------------------
Unable to load:
/Users/c86/webrtc-checkout/src/third_party/ijar/ijar.gni
I also checked in the secondary tree for:
/Users/c86/webrtc-checkout/src/build/secondary/third_party/ijar/ijar.gni
See //build/config/android/rules.gni:8:1: whence it was imported.
import("//build/config/android/internal_rules.gni")
^-------------------------------------------------
See //webrtc/examples/BUILD.gn:12:3: whence it was imported.
import("//build/config/android/rules.gni")
^----------------------------------------
See //BUILD.gn:13:5: which caused the file to be included.
"//webrtc/examples",
^------------------
How can I solve this? Am I going in right direction to develop app of video chat on Web RTC?

Building WebRTC for Android is only supported on Ubuntu(14 / 16).
Currently not supported in macOS.

Xamarin Forms Ui project (Multiplatform)

I am making this UI for a multiplatform app using Xamarin on my Macbook.
I have set FormsUI as startup project.
Xamarin gives errors when i try to run the project on ios simulator.
/Library/Frameworks/Mono.framework/External/xbuild/Xamarin/iOS/Xamarin.iOS.Common.targets:
Error: Failed to load output manifest for ibtool: Unrecognized property list format. (XPlatformFormsUI.iOS)
/Library/Frameworks/Mono.framework/External/xbuild/Xamarin/iOS/Xamarin.iOS.Common.targets:
Error: Output manifest contents: (XPlatformFormsUI.iOS)

This particular error has been mentioned in the Xamarin Forms forum; basically, something in one of the iOS assets (e.g. a storyboard) is the cause. Unfortunately, you don't get much information regarding WHICH asset it was in the error. Try creating a brand new solution and gradually introduce your changes until you hit the error.

Android NDK LoadLibrary("KERNEL32.DLL")

Is there a way to Load the kernel32.dll library in the Android NDK?
I'm trying to extract the GetTickCount and GetTickCount64 functions out of it, and I get this error when trying to run the LoadLibrary("KERNEL32.DLL"):
Function 'LoadLibrary' could not be resolved
Any suggestions to get the GetTickCount and GetTickCount64?

Android is Linux, not Windows. You need to use Linux APIs. Use clock_gettime instead of GetTickCount (example).

How to play Audio file in Android QT?

i developed my application in QT, i am trying to port for android. my application working fine in android with few issues. the main issue is, i am not able to play the audio file when i am trying to put the audio file play Code i am getting error
QSound::play(FilePath);
Error: : -1: error: error: cannot find -lQtMultimediaKit
D:\Projects\test\demo.cpp:996: error: undefined reference to 'QSound::play(QString const&)'
my config: QT 4.8,QT Creator 2.5.83 and necessitas and windows XP
i am able to include the QSound Header file and using intellisense to type the QSound::Play no issue while typing when i am getting error on compilation. so i tried to look into the source folder and i found QSound.h header also.
How to play the Audio file in Android using QT?

in may case it works properly with no errors
my code:
player->setMedia(QUrl("qrc:/new/prefix1/1.mp3"));
// ok it works on windows
//also works on android

Stumblend in this one while searching info, this looks useful: http://qt-project.org/doc/qt-5/qml-qtmultimedia-mediaplayer.html

While the support of Audio for Android in QT is there, it's a journey through hell with the current release. If you want it stable in the end you'll end-up searching for external libraries anyway Take a look here

this works for me
file .pro
QTPLUGIN += qtaudio_coreaudio
QT += androidextras
QT += widgets
QT += quickcontrols2
file in Resources:
player2->setMedia(QUrl("qrc:/new/prefix1/folder_x/file.mp3"));
player2->play();