repositories {
        google()
        jcenter()
        maven { url 'https://jitpack.io' }
    }
}

implementation 'com.github.santosh-kumar-kaushal:EasyWorkManager:1.0'

override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        
       //Build Task scheduler with different options.
        TaskScheduler.Builder(this,this).
        setListener(this).setWorkType(WorkType.PERIODIC)
            .setPeriodicTime(min.toLong()).build()
        }

   override fun onTaskExecutionInProgress() {
       Log.e("MainActivity","onTaskExecutionInProgress...")
   }

   override fun onTaskExecutionCompleted() {
       Log.e("MainActivity","onTaskExecutionCompleted.")
   }

   override fun onTaskExecutionFailed() {
       Log.e("MainActivity","onTaskExecutionFailed.")
   }

   override fun startBackgroundTask() {
       Log.e("MainActivity","startBackgroundTask.")
   }

class MainActivity : AppCompatActivity(),ITaskExecutionCallback {
   override fun onCreate(savedInstanceState: Bundle?) {
       super.onCreate(savedInstanceState)
       val min=20*60000
       setContentView(R.layout.activity_main)

       //Build Task scheduler with different options.
       TaskScheduler.Builder(this,this).
       setListener(this).setWorkType(WorkType.PERIODIC)
           .setPeriodicTime(min.toLong()).build()
   }

   override fun onTaskExecutionInProgress() {
       Log.e("MainActivity","onTaskExecutionInProgress...")
   }

   override fun onTaskExecutionCompleted() {
       Log.e("MainActivity","onTaskExecutionCompleted.")
   }

   override fun onTaskExecutionFailed() {
       Log.e("MainActivity","onTaskExecutionFailed.")
   }

   @RequiresApi(Build.VERSION_CODES.N)
   override fun startBackgroundTask() {
       Log.e("MainActivity","startBackgroundTask.")
       fetchDataFromApi()
   }

class OwnTaskScheduler(
    context: Context,
    lifecycleOwner: LifecycleOwner,
    iTaskExecutionCallback: ITaskExecutionCallback,
    workType: WorkType
) : TaskScheduler(context, lifecycleOwner, iTaskExecutionCallback, workType) {

    private lateinit var oneTimeWorkRequest: OneTimeWorkRequest

    //Your own constraints.
    override var constraints: Constraints =
        Constraints.Builder().setRequiredNetworkType(NetworkType.CONNECTED).build()

    //Your own request type.
    override fun scheduleCustomRequest() {
        oneTimeWorkRequest =
            OneTimeWorkRequest.Builder(BackGroundWorker::class.java)
                .setConstraints(constraints)
                .build()
        workManager.enqueue(oneTimeWorkRequest)
        //Set the callbacks to listen to changes.
        listenToCallbacks(oneTimeWorkRequest.id)
    }
}

   Copyright (C) 2020 Santosh Kumar

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.