priya5713 / K4Kotlin

A sweet, small set of Kotlin functions to reduce your android boilerplate code

K4Kotlin

A sweet, small set of Kotlin functions to reduce your android boilerplate code

Dependency

Add this in your project level build.gradle file (not your module build.gradle file):

allprojects {
	repositories {
        maven { url "https://jitpack.io" } // add this line
    }
}

Then, add the library to your module build.gradle

dependencies {
    compile 'com.github.kirtan403:K4Kotlin:0.1.3'
}

Usage

View

Set View's visibility to visible

Instead of

myView.setVisibility(View.VISIBLE);

use:

myView.show()

Set View's visibility to gone

Instead of

myView.setVisibility(View.GONE);

use:

myView.hide()

Set View's visibility to invsible

Instead of

myView.setVisibility(View.INVISIBLE);

use:

myView.invisible()

Toggle View's visibility between VISIBLE and GONE

Instead of

if(myView.getVisibility()  ==  View.VISIBLE)
    myView.setVisibility(View.GONE);
else
    myView.setVisibility(View.VISIBLE);

use:

myView.toggle()

To fade in a view

myView.fadeIn()
myView.fadeIn(1000) // Optional duration 

To fade out a view

myView.fadeOut()
myView.fadeOut(1000) // Optional duration 

Activity

Hide the keyboard

hideKeyboard() // Anywhere inside your activity

Context

hide/show multiple views

hideViews(myView1,myView2,myView3,.. myViewN)  // Sets all views visibility to GONE
showViews(myView1,myView2,myView3,.. myViewN)  // Sets all views visibility to VISIBLE

Number

Number?.orZero() method for all number types

if(myNumberVar?.orZero())  // return 0 if variable is null

Boolean

Boolean?.orFalse() method

if(myBooleanVar?.orFalse()) // return false if variable is null

EditText

Text watcher

var textWatcher = myEditText.addTextWatcher {
    Log.d(TAG, "text changed!")
}