content: 
  package me.imid.swipebacklayout.lib.app;
  
  import android.os.Bundle;
  import android.support.v7.app.AppCompatActivity;
  import android.view.View;
  
  import me.imid.swipebacklayout.lib.SwipeBackLayout;
  import me.imid.swipebacklayout.lib.Utils;
  
  public class SwipeBackActivity extends AppCompatActivity implements SwipeBackActivityBase {
      private SwipeBackActivityHelper mHelper;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          mHelper = new SwipeBackActivityHelper(this);
          mHelper.onActivityCreate();
      }
  
      @Override
      protected void onPostCreate(Bundle savedInstanceState) {
          super.onPostCreate(savedInstanceState);
          mHelper.onPostCreate();
      }
  
      @Override
      public View findViewById(int id) {
          View v = super.findViewById(id);
          if (v == null && mHelper != null)
              return mHelper.findViewById(id);
          return v;
      }
  
      @Override
      public SwipeBackLayout getSwipeBackLayout() {
          return mHelper.getSwipeBackLayout();
      }
  
      @Override
      public void setSwipeBackEnable(boolean enable) {
          getSwipeBackLayout().setEnableGesture(enable);
      }
  
      @Override
      public void scrollToFinishActivity() {
          Utils.convertActivityToTranslucent(this);
          getSwipeBackLayout().scrollToFinishActivity();
      }
  }
  