clean up playback interface and a few other classes

app/src/main/java/com/dkanada/gramophone/misc/CustomFragmentStatePagerAdapter.java

@@ -68,7 +68,6 @@ import java.util.List;
  * complete}
  */
 public abstract class CustomFragmentStatePagerAdapter extends PagerAdapter {
-
     public static final String TAG = CustomFragmentStatePagerAdapter.class.getSimpleName();
     private static final boolean DEBUG = false;
 
@@ -83,9 +82,6 @@ public abstract class CustomFragmentStatePagerAdapter extends PagerAdapter {
         mFragmentManager = fm;
     }
 
-    /**
-     * Return the Fragment associated with a specified position.
-     */
     public abstract Fragment getItem(int position);
 
     @Override
@@ -117,9 +113,11 @@ public abstract class CustomFragmentStatePagerAdapter extends PagerAdapter {
                 fragment.setInitialSavedState(fss);
             }
         }
+
         while (mFragments.size() <= position) {
             mFragments.add(null);
         }
+
         fragment.setMenuVisibility(false);
         fragment.setUserVisibleHint(false);
         mFragments.set(position, fragment);
@@ -135,11 +133,13 @@ public abstract class CustomFragmentStatePagerAdapter extends PagerAdapter {
         if (mCurTransaction == null) {
             mCurTransaction = mFragmentManager.beginTransaction();
         }
+
         if (DEBUG) Log.v(TAG, "Removing item #" + position + ": f=" + object
                 + " v=" + ((Fragment) object).getView());
         while (mSavedState.size() <= position) {
             mSavedState.add(null);
         }
+
         mSavedState.set(position, mFragmentManager.saveFragmentInstanceState(fragment));
         mFragments.set(position, null);
 
@@ -158,6 +158,7 @@ public abstract class CustomFragmentStatePagerAdapter extends PagerAdapter {
                 fragment.setMenuVisibility(true);
                 fragment.setUserVisibleHint(true);
             }
+
             mCurrentPrimaryItem = fragment;
         }
     }
@@ -185,6 +186,7 @@ public abstract class CustomFragmentStatePagerAdapter extends PagerAdapter {
             mSavedState.toArray(fss);
             state.putParcelableArray("states", fss);
         }
+
         for (int i = 0; i < mFragments.size(); i++) {
             Fragment f = mFragments.get(i);
             if (f != null && f.isAdded()) {
@@ -195,6 +197,7 @@ public abstract class CustomFragmentStatePagerAdapter extends PagerAdapter {
                 mFragmentManager.putFragment(state, key, f);
             }
         }
+
         return state;
     }
 
@@ -211,6 +214,7 @@ public abstract class CustomFragmentStatePagerAdapter extends PagerAdapter {
                     mSavedState.add((Fragment.SavedState) fs);
                 }
             }
+
             Iterable<String> keys = bundle.keySet();
             for (String key : keys) {
                 if (key.startsWith("f")) {
@@ -234,6 +238,7 @@ public abstract class CustomFragmentStatePagerAdapter extends PagerAdapter {
         if (position < mFragments.size() && position >= 0) {
             return mFragments.get(position);
         }
+
         return null;
     }
 }

app/src/main/java/com/dkanada/gramophone/misc/DialogAsyncTask.java

@@ -1,89 +0,0 @@
-package com.dkanada.gramophone.misc;
-
-import android.app.Dialog;
-import android.content.Context;
-import android.os.Handler;
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-
-import java.lang.ref.WeakReference;
-
-public abstract class DialogAsyncTask<Params, Progress, Result> extends WeakContextAsyncTask<Params, Progress, Result> {
-    private final int delay;
-    private WeakReference<Dialog> dialogWeakReference;
-
-    private boolean supposedToBeDismissed;
-
-    public DialogAsyncTask(Context context) {
-        this(context, 0);
-    }
-
-    public DialogAsyncTask(Context context, int showDelay) {
-        super(context);
-        this.delay = showDelay;
-        dialogWeakReference = new WeakReference<>(null);
-    }
-
-    @Override
-    protected void onPreExecute() {
-        super.onPreExecute();
-        if (delay > 0) {
-            new Handler().postDelayed(this::initAndShowDialog, delay);
-        } else {
-            initAndShowDialog();
-        }
-    }
-
-    private void initAndShowDialog() {
-        Context context = getContext();
-        if (!supposedToBeDismissed && context != null) {
-            Dialog dialog = createDialog(context);
-            dialogWeakReference = new WeakReference<>(dialog);
-            dialog.show();
-        }
-    }
-
-    @SuppressWarnings("unchecked")
-    @Override
-    protected void onProgressUpdate(Progress... values) {
-        super.onProgressUpdate(values);
-        Dialog dialog = getDialog();
-        if (dialog != null) {
-            onProgressUpdate(dialog, values);
-        }
-    }
-
-    @SuppressWarnings("unchecked")
-    protected void onProgressUpdate(@NonNull Dialog dialog, Progress... values) {
-    }
-
-    @Nullable
-    protected Dialog getDialog() {
-        return dialogWeakReference.get();
-    }
-
-    @Override
-    protected void onCancelled(Result result) {
-        super.onCancelled(result);
-        tryToDismiss();
-    }
-
-    @Override
-    protected void onPostExecute(Result result) {
-        super.onPostExecute(result);
-        tryToDismiss();
-    }
-
-    private void tryToDismiss() {
-        supposedToBeDismissed = true;
-        try {
-            Dialog dialog = getDialog();
-            if (dialog != null)
-                dialog.dismiss();
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-    }
-
-    protected abstract Dialog createDialog(@NonNull Context context);
-}

app/src/main/java/com/dkanada/gramophone/misc/SimpleAnimatorListener.java

@@ -5,21 +5,17 @@ import android.animation.Animator;
 public abstract class SimpleAnimatorListener implements Animator.AnimatorListener {
     @Override
     public void onAnimationStart(Animator animation) {
-
     }
 
     @Override
     public void onAnimationEnd(Animator animation) {
-
     }
 
     @Override
     public void onAnimationCancel(Animator animation) {
-
     }
 
     @Override
     public void onAnimationRepeat(Animator animation) {
-
     }
 }

app/src/main/java/com/dkanada/gramophone/misc/WeakContextAsyncTask.java

@@ -1,20 +0,0 @@
-package com.dkanada.gramophone.misc;
-
-import android.content.Context;
-import android.os.AsyncTask;
-import androidx.annotation.Nullable;
-
-import java.lang.ref.WeakReference;
-
-public abstract class WeakContextAsyncTask<Params, Progress, Result> extends AsyncTask<Params, Progress, Result> {
-    private WeakReference<Context> contextWeakReference;
-
-    public WeakContextAsyncTask(Context context) {
-        contextWeakReference = new WeakReference<>(context);
-    }
-
-    @Nullable
-    protected Context getContext() {
-        return contextWeakReference.get();
-    }
-}

app/src/main/java/com/dkanada/gramophone/misc/WrappedAsyncTaskLoader.java

@@ -1,72 +0,0 @@
-
-package com.dkanada.gramophone.misc;
-
-import android.content.Context;
-import androidx.loader.content.AsyncTaskLoader;
-
-/**
- * <a href="http://code.google.com/p/android/issues/detail?id=14944">Issue
- * 14944</a>
- *
- * @author Alexander Blom
- */
-public abstract class WrappedAsyncTaskLoader<D> extends AsyncTaskLoader<D> {
-
-    private D mData;
-
-    /**
-     * Constructor of <code>WrappedAsyncTaskLoader</code>
-     *
-     * @param context The {@link Context} to use.
-     */
-    public WrappedAsyncTaskLoader(Context context) {
-        super(context);
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public void deliverResult(D data) {
-        if (!isReset()) {
-            this.mData = data;
-            super.deliverResult(data);
-        } else {
-            // An asynchronous query came in while the loader is stopped
-        }
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    protected void onStartLoading() {
-        super.onStartLoading();
-        if (this.mData != null) {
-            deliverResult(this.mData);
-        } else if (takeContentChanged() || this.mData == null) {
-            forceLoad();
-        }
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    protected void onStopLoading() {
-        super.onStopLoading();
-        // Attempt to cancel the current load task if possible
-        cancelLoad();
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    protected void onReset() {
-        super.onReset();
-        // Ensure the loader is stopped
-        onStopLoading();
-        this.mData = null;
-    }
-}