[Android Studio] kotlin to Java 변환하기

 

: 아래와 같은 코틀린 코드를 java 코드로 변환해 봤습니다.

class MainActivity2 : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            RC100_APPTheme {
                // A surface container using the 'background' color from the theme
                Surface(
                    modifier = Modifier.fillMaxSize(),
                    color = MaterialTheme.colors.background
                ) {
                    Greeting("Android")
                }
            }
        }
    }
}

@Composable
fun Greeting(name: String) {
    Text(text = "Hello $name!")
}

@Preview(showBackground = true)
@Composable
fun DefaultPreview() {
    RC100_APPTheme {
        Greeting("Android")
    }
}

 

▶ Tools 메뉴  Kotlin  ==>  "Show Kotlin Bytecode"  선택

 

 

▶   아래의  Kotlin Bytecode 메뉴에서 Decompile를 클릭해 줍니다.

 

 

▶  XXXXXXX.decompiled.java 파일이 생성이 됩니다.  ( MainActivity2.decompiled.java)

// MainActivity2.java
package com.xxx.rc100_app;

import android.os.Bundle;
import androidx.activity.ComponentActivity;
import androidx.activity.compose.ComponentActivityKt;
import androidx.compose.runtime.CompositionContext;
import kotlin.Metadata;
import kotlin.jvm.functions.Function0;
import org.jetbrains.annotations.Nullable;

@Metadata(
   mv = {1, 6, 0},
   k = 1,
   d1 = {"\u0000\u0018\n\u0002\u0018\u0002\n\u0002\u0018\u0002\n\u0002\b\u0002\n\u0002\u0010\u0002\n\u0000\n\u0002\u0018\u0002\n\u0000\u0018\u00002\u00020\u0001B\u0005¢\u0006\u0002\u0010\u0002J\u0012\u0010\u0003\u001a\u00020\u00042\b\u0010\u0005\u001a\u0004\u0018\u00010\u0006H\u0014¨\u0006\u0007"},
   d2 = {"Lcom/xxx/rc100_app/MainActivity2;", "Landroidx/activity/ComponentActivity;", "()V", "onCreate", "", "savedInstanceState", "Landroid/os/Bundle;", "app_debug"}
)
public final class MainActivity2 extends ComponentActivity {
   protected void onCreate(@Nullable Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      ComponentActivityKt.setContent$default(this, (CompositionContext)null, (Function0)null.INSTANCE, 1, (Object)null);
   }
}

import androidx.compose.material.TextKt;
import androidx.compose.runtime.Composable;
import androidx.compose.ui.Modifier;
import androidx.compose.ui.text.TextStyle;
import androidx.compose.ui.text.font.FontFamily;
import androidx.compose.ui.text.font.FontStyle;
import androidx.compose.ui.text.font.FontWeight;
import androidx.compose.ui.text.style.TextAlign;
import androidx.compose.ui.text.style.TextDecoration;
import com.xxx.rc100_app.ui.theme.ThemeKt;
import kotlin.Metadata;
import kotlin.jvm.functions.Function0;
import kotlin.jvm.functions.Function1;
import kotlin.jvm.internal.Intrinsics;
import org.jetbrains.annotations.NotNull;

@Metadata(
   mv = {1, 6, 0},
   k = 2,
   d1 = {"\u0000\u0010\n\u0000\n\u0002\u0010\u0002\n\u0002\b\u0002\n\u0002\u0010\u000e\n\u0000\u001a\b\u0010\u0000\u001a\u00020\u0001H\u0007\u001a\u0010\u0010\u0002\u001a\u00020\u00012\u0006\u0010\u0003\u001a\u00020\u0004H\u0007¨\u0006\u0005"},
   d2 = {"DefaultPreview", "", "Greeting", "name", "", "app_debug"}
)
public final class MainActivity2Kt {
   @Composable
   public static final void Greeting(@NotNull String name) {
      Intrinsics.checkNotNullParameter(name, "name");
      TextKt.Text-Vh6c2nE$default("Hello " + name + '!', (Modifier)null, 0L, 0L, (FontStyle)null, (FontWeight)null, (FontFamily)null, 0L, (TextDecoration)null, (TextAlign)null, 0L, 0, false, 0, (Function1)null, (TextStyle)null, 65534, (Object)null);
   }

   @Composable
   public static final void DefaultPreview() {
      ThemeKt.RC100_APPTheme$default(false, (Function0)null.INSTANCE, 1, (Object)null);
   }
}

 

 

그럼 수고하세요.