add composition of click event stream observables into MainActivity for test

Author: EthanYoo

app/build.gradle

@@ -44,6 +44,10 @@ dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
     implementation "org.jetbrains.anko:anko:$anko_version"
 
+    // Lombok
+    compileOnly 'org.projectlombok:lombok:1.18.0'
+    annotationProcessor 'org.projectlombok:lombok:1.18.0'
+
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

app/src/main/java/com/buzzbil/rxandroidsample/activity/RxViewActivity.java

@@ -11,27 +11,28 @@
 import com.jakewharton.rxbinding2.widget.RxCompoundButton;
 
 import io.reactivex.Observable;
+import io.reactivex.disposables.CompositeDisposable;
 import io.reactivex.disposables.Disposable;
 import io.reactivex.functions.BiFunction;
 import io.reactivex.functions.Consumer;
 import io.reactivex.functions.Predicate;
 
 public class RxViewActivity extends AppCompatActivity {
 
+    CompositeDisposable compositeDisposable = new CompositeDisposable();
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_rx_view);
 
         Button button = findViewById(R.id.rx_view_btn);
         Observable<Object> clickObs = RxView.clicks(button);
-
-
         CheckBox checkBox = findViewById(R.id.rx_view_checkbox);
         Observable<Boolean> checkedTrueObs = RxCompoundButton.checkedChanges(checkBox)
                 .skipInitialValue();
 
-        Disposable subscribe = clickObs
+        Disposable disposable = clickObs
                 // 클릭 스트림에 체크 스트림의 마지막 값을 조합해서 새로운 스트림을 만든다.
                 .withLatestFrom(checkedTrueObs, new BiFunction<Object, Boolean, Boolean>() {
                     @Override
@@ -54,5 +55,13 @@ public void accept(Object o) throws Exception {
                         Toast.makeText(RxViewActivity.this, "result : " + o, Toast.LENGTH_SHORT).show();
                     }
                 });
+
+        compositeDisposable.add(disposable);
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        compositeDisposable.clear();
     }
 }

app/src/main/java/com/buzzbil/rxandroidsample/activity/RxViewKtActivity.kt

@@ -17,6 +17,7 @@ class RxViewKtActivity : AppCompatActivity() {
         setContentView(R.layout.activity_rx_view)
 
         val clicks = RxView.clicks(find(R.id.rx_view_btn))
+
         val checkedChanges = RxCompoundButton.checkedChanges(find(R.id.rx_view_checkbox))
 
         clicks