removed redundant argument from StepAdapter's findStep method (issue #64)

Author: Piotr Zawadzki

material-stepper/src/main/java/com/stepstone/stepper/StepperLayout.java

@@ -574,7 +574,7 @@ private boolean isLastPosition(int position) {
     }
 
     private Step findCurrentStep() {
-        return mStepAdapter.findStep(mPager, mCurrentStepPosition);
+        return mStepAdapter.findStep(mCurrentStepPosition);
     }
 
     private void onPrevious() {
@@ -662,7 +662,7 @@ private void onUpdate(int newStepPosition, boolean animate) {
         mStepperType.showErrorStateOnBack(mShowErrorStateOnBack);
         mStepperType.onStepSelected(newStepPosition);
         mListener.onStepSelected(newStepPosition);
-        Step step = mStepAdapter.findStep(mPager, newStepPosition);
+        Step step = mStepAdapter.findStep(newStepPosition);
         if (step != null) {
             step.onSelected();
         }

material-stepper/src/main/java/com/stepstone/stepper/adapter/AbstractFragmentStepAdapter.java

@@ -23,8 +23,8 @@
 import android.support.v4.app.FragmentManager;
 import android.support.v4.app.FragmentPagerAdapter;
 import android.support.v4.view.PagerAdapter;
-import android.support.v4.view.ViewPager;
 
+import com.stepstone.stepper.R;
 import com.stepstone.stepper.Step;
 import com.stepstone.stepper.viewmodel.StepViewModel;
 
@@ -54,8 +54,8 @@ public final Fragment getItem(@IntRange(from = 0) int position) {
 
     /** {@inheritDoc} */
     @SuppressWarnings("unchecked")
-    public Step findStep(ViewPager viewPager, @IntRange(from = 0) int position) {
-        String fragmentTag =  "android:switcher:" + viewPager.getId() + ":" + this.getItemId(position);
+    public Step findStep(@IntRange(from = 0) int position) {
+        String fragmentTag =  "android:switcher:" + R.id.ms_stepPager + ":" + this.getItemId(position);
         return (Step) mFragmentManager.findFragmentByTag(fragmentTag);
     }
 

material-stepper/src/main/java/com/stepstone/stepper/adapter/StepAdapter.java

@@ -24,11 +24,10 @@ public interface StepAdapter {
     /**
      * Finds the given step without creating it.
      * @see FragmentPagerAdapter#makeFragmentName(int, long)
-     * @param viewPager view pager to use for displaying step fragments
      * @param position step position
      * @return step fragment
      */
-    Step findStep(ViewPager viewPager, @IntRange(from = 0) int position);
+    Step findStep(@IntRange(from = 0) int position);
 
     /**
      * Returns the view information to be used to display the step.

sample/src/main/java/com/stepstone/stepper/sample/adapter/SampleStepAdapter.java

@@ -3,7 +3,6 @@
 import android.content.Context;
 import android.support.annotation.IntRange;
 import android.support.annotation.NonNull;
-import android.support.v4.view.ViewPager;
 import android.util.SparseArray;
 import android.view.View;
 import android.view.ViewGroup;
@@ -46,7 +45,7 @@ public int getCount() {
     }
 
     @Override
-    public Step findStep(ViewPager viewPager, int position) {
+    public Step findStep(int position) {
         return pages.size() > 0 ? pages.get(position) : null;
     }