com.h6ah4i.android.example.advrecyclerview.demo_s_legacy.RecyclerListViewFragment.java Source code

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Here is the source code for com.h6ah4i.android.example.advrecyclerview.demo_s_legacy.RecyclerListViewFragment.java

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/*
 *    Copyright (C) 2015 Haruki Hasegawa
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package com.h6ah4i.android.example.advrecyclerview.demo_s_legacy;

import android.graphics.drawable.NinePatchDrawable;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.content.ContextCompat;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.h6ah4i.android.example.advrecyclerview.R;
import com.h6ah4i.android.example.advrecyclerview.common.data.AbstractDataProvider;
import com.h6ah4i.android.widget.advrecyclerview.animator.GeneralItemAnimator;
import com.h6ah4i.android.widget.advrecyclerview.animator.SwipeDismissItemAnimator;
import com.h6ah4i.android.widget.advrecyclerview.decoration.ItemShadowDecorator;
import com.h6ah4i.android.widget.advrecyclerview.decoration.SimpleListDividerDecorator;
import com.h6ah4i.android.widget.advrecyclerview.swipeable.RecyclerViewSwipeManager;
import com.h6ah4i.android.widget.advrecyclerview.touchguard.RecyclerViewTouchActionGuardManager;
import com.h6ah4i.android.widget.advrecyclerview.utils.WrapperAdapterUtils;

public class RecyclerListViewFragment extends Fragment {
    private RecyclerView mRecyclerView;
    private RecyclerView.LayoutManager mLayoutManager;
    private RecyclerView.Adapter mAdapter;
    private RecyclerView.Adapter mWrappedAdapter;
    private RecyclerViewSwipeManager mRecyclerViewSwipeManager;
    private RecyclerViewTouchActionGuardManager mRecyclerViewTouchActionGuardManager;

    public RecyclerListViewFragment() {
        super();
    }

    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
            @Nullable Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_recycler_list_view, container, false);
    }

    @Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);

        //noinspection ConstantConditions
        mRecyclerView = (RecyclerView) getView().findViewById(R.id.recycler_view);
        mLayoutManager = new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false);

        // touch guard manager  (this class is required to suppress scrolling while swipe-dismiss animation is running)
        mRecyclerViewTouchActionGuardManager = new RecyclerViewTouchActionGuardManager();
        mRecyclerViewTouchActionGuardManager.setInterceptVerticalScrollingWhileAnimationRunning(true);
        mRecyclerViewTouchActionGuardManager.setEnabled(true);

        // swipe manager
        mRecyclerViewSwipeManager = new RecyclerViewSwipeManager();

        //adapter
        final MyLegacySwipeableItemAdapter myItemAdapter = new MyLegacySwipeableItemAdapter(getDataProvider());
        myItemAdapter.setEventListener(new MyLegacySwipeableItemAdapter.EventListener() {
            @Override
            public void onItemRemoved(int position) {
                ((LegacySwipeableExampleActivity) getActivity()).onItemRemoved(position);
            }

            @Override
            public void onItemPinned(int position) {
                ((LegacySwipeableExampleActivity) getActivity()).onItemPinned(position);
            }

            @Override
            public void onItemViewClicked(View v, boolean pinned) {
                onItemViewClick(v, pinned);
            }
        });

        mAdapter = myItemAdapter;

        mWrappedAdapter = mRecyclerViewSwipeManager.createWrappedAdapter(myItemAdapter); // wrap for swiping

        final GeneralItemAnimator animator = new SwipeDismissItemAnimator();

        // Change animations are enabled by default since support-v7-recyclerview v22.
        // Disable the change animation in order to make turning back animation of swiped item works properly.
        animator.setSupportsChangeAnimations(false);

        mRecyclerView.setLayoutManager(mLayoutManager);
        mRecyclerView.setAdapter(mWrappedAdapter); // requires *wrapped* adapter
        mRecyclerView.setItemAnimator(animator);

        // additional decorations
        //noinspection StatementWithEmptyBody
        if (supportsViewElevation()) {
            // Lollipop or later has native drop shadow feature. ItemShadowDecorator is not required.
        } else {
            mRecyclerView.addItemDecoration(new ItemShadowDecorator(
                    (NinePatchDrawable) ContextCompat.getDrawable(getContext(), R.drawable.material_shadow_z1)));
        }
        mRecyclerView.addItemDecoration(new SimpleListDividerDecorator(
                ContextCompat.getDrawable(getContext(), R.drawable.list_divider_h), true));

        // NOTE:
        // The initialization order is very important! This order determines the priority of touch event handling.
        //
        // priority: TouchActionGuard > Swipe > DragAndDrop
        mRecyclerViewTouchActionGuardManager.attachRecyclerView(mRecyclerView);
        mRecyclerViewSwipeManager.attachRecyclerView(mRecyclerView);

        // for debugging
        //        animator.setDebug(true);
        //        animator.setMoveDuration(2000);
        //        animator.setRemoveDuration(2000);
        //        mRecyclerViewSwipeManager.setMoveToOutsideWindowAnimationDuration(2000);
        //        mRecyclerViewSwipeManager.setReturnToDefaultPositionAnimationDuration(2000);
    }

    @Override
    public void onDestroyView() {
        if (mRecyclerViewSwipeManager != null) {
            mRecyclerViewSwipeManager.release();
            mRecyclerViewSwipeManager = null;
        }

        if (mRecyclerViewTouchActionGuardManager != null) {
            mRecyclerViewTouchActionGuardManager.release();
            mRecyclerViewTouchActionGuardManager = null;
        }

        if (mRecyclerView != null) {
            mRecyclerView.setItemAnimator(null);
            mRecyclerView.setAdapter(null);
            mRecyclerView = null;
        }

        if (mWrappedAdapter != null) {
            WrapperAdapterUtils.releaseAll(mWrappedAdapter);
            mWrappedAdapter = null;
        }
        mAdapter = null;
        mLayoutManager = null;

        super.onDestroyView();
    }

    private void onItemViewClick(View v, boolean pinned) {
        int position = mRecyclerView.getChildAdapterPosition(v);
        if (position != RecyclerView.NO_POSITION) {
            ((LegacySwipeableExampleActivity) getActivity()).onItemClicked(position);
        }
    }

    private boolean supportsViewElevation() {
        return (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP);
    }

    public AbstractDataProvider getDataProvider() {
        return ((LegacySwipeableExampleActivity) getActivity()).getDataProvider();
    }

    public void notifyItemChanged(int position) {
        mAdapter.notifyItemChanged(position);
    }

    public void notifyItemInserted(int position) {
        mAdapter.notifyItemInserted(position);
        mRecyclerView.scrollToPosition(position);
    }
}