PagerSlidingTabStrip | interactive indicator to navigate | Widget library

I'm trying to transition from using AppcomatActivity to Fragment, because I'm updating my app but I've run into a problem. I get a "Unresolved reference: supportFragmentManager" and "Unresolved reference: setSupportActionBar"(That's all the Logcat shows me) when I try to run my app. Now I chose to switch to using fragments, because I also want to change the apps UI, usage is quicker than the previous version. Anyway here's my code:

Recorder Fragment

I am unable to upgrade code to gradle 3.5.3 when I tried a lot of error occurs.

here my old code app.gradle

I'm facing a weird issue with multidex. I've had my app multidexed for a long time, but lately I can't build it anymore. It started after configuring Kotlin in the project.

The 'run' option in Android Studio works: the app runs successfully in my device. However, if I try the "Build APK" option or run gradlew assembleDebug, the build fails with the usual exception:

I have a problem with gradle. it was working fine but all of sudden when I was rebuilding the project it gives me this error:

Error:Failed to resolve: support-vector-drawable

I can't find out what my problem is?

My app.gradle

Although many similar questions exist, I checked the answers to all and none of them worked for me!

Here is the error I'm facing while compiling the code:

I am getting dex merging error. I am using Android Studio 3.2.1. T\here are some more modules. But I guess these are the files from where error is generating. I tried to update Google Play services it didn't work.

I have two modules socket lib and iqsits lib. The iqsits lib is added in socket lib. When I don't add this in app gradle, running the code gives me error for iqsits package not found. When I add it in app gradle code gives me dex merging error.

project gradle:

I completed this move and worked out most of the kinks however there is one problem I've not been able to solve. Did a search and tried to make sense of the results, tried a few things but still no progress. The problem seems to be related to the Styles/Themes in the app.

Stack trace

Hi everyone, i just open my android studio and got these issues, tried research and not finding a way to get rid of this, kindly help me.

here is my gradle file

// Top-level build file where you can add configuration options common to all sub-projects/modules.

I added a few dependencies in my project and when I run it this error shows:

Error:Execution failed for task ':app:transformClassesWithMultidexlistForDebug'. > java.io.IOException: Can't write [D:\android\projects\android-client\app\build\intermediates\multi-dex\debug\componentClasses.jar] (Can't read [D:\android\projects\android-client\app\build\intermediates\transforms\desugar\debug\47.jar(;;;;;;**.class)] (Duplicate zip entry [47.jar:android/support/design/widget/CoordinatorLayout$Behavior.class]))

and here is my build.gradle file: