Showing posts with label kotlin. Show all posts
Showing posts with label kotlin. Show all posts

Tuesday, 11 August 2020

Scrollable readonly EditView in Kotlin

 Scrollable readonly EditView in Kotlin


In the view xml file: 
<EditText
        android:id="@+id/etResult"
        android:layout_width="match_parent"
        android:layout_height="343dp"
        android:background="@color/backgroundColor"
        android:backgroundTint="#00000000"
        android:ems="10"
        android:enabled="true"
        android:fontFamily="sans-serif-condensed"
        android:gravity="start|top"
        android:hint="@string/blankfoldermessage"
        android:importantForAutofill="no"
        android:inputType="none"
        android:paddingTop="2dp"
        android:singleLine="false"
        tools:targetApi="o" />

in the kotlin file (init function): 
etResult.keyListener = null


this will allow the edit text to be multiline, not editable but scrollable. 

Wednesday, 5 August 2020

Simple use of Timer in Kotlin


the code below will set the button to clickable after 30 sec:

btnOk.isClickable=false
Timer().schedule(timerTask {

    btnOk.isClickable=true

}, 1000*30)

the above code runs in a separate thread, 
so the UI is responsive while running this code.

Working with UI controls from Non main thread in Kotlin


import org.jetbrains.anko.doAsync
import org.jetbrains.anko.uiThread


fun anyFunction(){
doAsync {
      // Normal code inside Async thread
      I=I+1
     If(I=100){

    uiThread {

        tvResult.setText =”I is now 100!!”
      }
    }
   //More code
   If(x==0){
     uiThread {

        tvResult.setText =”there’s some problem!”
      }
   }


}
}

Note: - you can include multiple uiThread inside same doAsync
          - you can include multiple doAsync inside any function

Permission request pop up in android

Request user to give permission to read external storage in Android - (Kotlin)


if (ContextCompat.checkSelfPermission(this,
        Manifest.permission.READ_EXTERNAL_STORAGE)
    != PackageManager.PERMISSION_GRANTED) {

    // Permission is not granted    // Should we show an explanation?    if (ActivityCompat.shouldShowRequestPermissionRationale(this,
            Manifest.permission.READ_EXTERNAL_STORAGE)) {

    } else {
        // No explanation needed, we can request the permission.        ActivityCompat.requestPermissions(this,
            arrayOf(Manifest.permission.READ_EXTERNAL_STORAGE),
            READ_STORAGE_CODE);

    }
} else {
    // Permission has already been granted}
NOTE: READ_STORAGE_CODE is just an int constant with fix value like 1001, or 2023
and is a variable in class level. 

How to find first weekday in the month in MSSQL

declare @n datetime = dateadd(mm,0,getDate())    declare @FirstWeekDayOfMonth int    SELECT @FirstWeekDayOfMonth= CASE          WHEN Dat...