First Kotlin Project (Android Development)

MPOP Reverse II (Ryann Kim Sesgundo)

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Introduction

It is just a scratch program where I want to explore kotlin for some reasons. In this way, may I use Java and Kotlin in terms of android development. Big credits to my college school to allow me to have android studio on my device from one of their professors.

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Adjustements and some conversions

I use this kind of method in Java

class MainActivity extends Activity{
    @Override
    public void onCreate(Bundle bundle){
        super.onCreate(bundle);
        LinearLayout base = new LinearLayout(this);
        // ...
        setContentView(base);
    }
}

This process is what I called Params Method or a method of avoiding the use of XML for creating some layouts. In this way, we may avoid the modifications of the application from the layout up to its design. But in Kotlin I use this kind of method now.

class MainActivity : Activity() {
    override fun onCreate(bundle: Bundle?){
        super.onCreate(bundle)
        val base = LinearLayout(this)
        // ...
        setContentView(base)
    }
}

It almost look like the java, but it make some adjustments for me. Another one is by using a context into an interface.

button.setOnClickListener(new OnClickListener(){
    @Override
    public void onClick(View v){
        AlertDialog.Builder alert = new AlertDialog.Builder(MainActivity.this);
    }
})

But in Kotlin, it looks like this

button.setOnClickListener(object: OnClickListener{
    override fun onClick(v: View){
        val alert = new AlertDialog.Builder(this@MainActivity);
    }
})

So to have this solution, I'd asked to the internet, but later on, I use the auto complete hint in android studio.