com.commonsware.cwac.crossport.demo.MainActivity.java Source code

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Here is the source code for com.commonsware.cwac.crossport.demo.MainActivity.java

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/***
 Copyright (c) 2016 CommonsWare, LLC
    
 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.commonsware.cwac.crossport.demo;

import android.app.Activity;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.PagerSnapHelper;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.SnapHelper;
import android.view.MenuItem;
import android.view.View;
import com.commonsware.cwac.crossport.v7.app.ActionBarDrawerToggle;
import com.commonsware.cwac.crossport.design.widget.Snackbar;
import com.commonsware.cwac.crossport.design.widget.TabLayoutLite;

public class MainActivity extends Activity {
    private static final String STATE_ADAPTER = "adapter";
    private static final int PERIOD = 5000;
    private PageAdapter adapter;
    private RecyclerView pager;
    private ActionBarDrawerToggle toggle;
    private final SnapHelper snapperCarr = new PagerSnapHelper();

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        pager = (RecyclerView) findViewById(R.id.pager);

        final LinearLayoutManager layoutManager = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL,
                false);

        pager.setLayoutManager(layoutManager);
        snapperCarr.attachToRecyclerView(pager);

        adapter = new PageAdapter(pager, getLayoutInflater());
        pager.setAdapter(adapter);

        final TabLayoutLite tabs = (TabLayoutLite) findViewById(R.id.tabs);

        for (int i = 0; i < adapter.getItemCount(); i++) {
            tabs.addTab(tabs.newTab().setText(adapter.getTabText(this, i)));
        }

        tabs.addOnTabSelectedListener(new TabLayoutLite.OnTabSelectedListener() {
            @Override
            public void onTabSelected(TabLayoutLite.Tab tab) {
                pager.smoothScrollToPosition(tab.getPosition());
            }

            @Override
            public void onTabUnselected(TabLayoutLite.Tab tab) {
                // unused
            }

            @Override
            public void onTabReselected(TabLayoutLite.Tab tab) {
                // unused
            }
        });

        pager.setOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                int tab = layoutManager.findFirstCompletelyVisibleItemPosition();

                if (tab >= 0 && tab < tabs.getTabCount()) {
                    tabs.getTabAt(tab).select();
                }
            }
        });

        pager.postDelayed(periodic, PERIOD);

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer);

        toggle = new ActionBarDrawerToggle(this, drawer, R.string.drawer_toggle_open, R.string.drawer_toggle_close);
        drawer.setDrawerListener(toggle);
        getActionBar().setDisplayHomeAsUpEnabled(true);
        getActionBar().setHomeButtonEnabled(true);
    }

    @Override
    protected void onSaveInstanceState(Bundle state) {
        super.onSaveInstanceState(state);

        Bundle adapterState = new Bundle();

        adapter.onSaveInstanceState(adapterState);
        state.putBundle(STATE_ADAPTER, adapterState);
    }

    @Override
    protected void onRestoreInstanceState(Bundle state) {
        super.onRestoreInstanceState(state);

        adapter.onRestoreInstanceState(state.getBundle(STATE_ADAPTER));
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        toggle.onConfigurationChanged(newConfig);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        return (toggle.onOptionsItemSelected(item));
    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);

        toggle.syncState();
    }

    private Runnable periodic = new Runnable() {
        @Override
        public void run() {
            pager.postDelayed(periodic, 5000);
            Snackbar.make(pager, R.string.hello, Snackbar.LENGTH_LONG)
                    .setAction(R.string.stop, new View.OnClickListener() {
                        @Override
                        public void onClick(View view) {
                            pager.removeCallbacks(periodic);
                        }
                    }).show();
        }
    };
}