com.blackmoon.english.MainActivity.java Source code

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Here is the source code for com.blackmoon.english.MainActivity.java

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/*
 * Copyright (C) 2015 Antonio Leiva
 *
 * 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.blackmoon.english;

import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.NavigationView;
import android.support.design.widget.Snackbar;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ImageView;

import com.yqritc.recyclerviewflexibledivider.HorizontalDividerItemDecoration;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity implements RecyclerViewAdapter.OnItemClickListener {
    private DrawerLayout drawerLayout;
    private View content;
    private RecyclerView recyclerView;
    private FloatingActionButton fab;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        initRecyclerView();
        initToolbar();
        setupDrawerLayout();

        content = findViewById(R.id.content);

        final ImageView avatar = (ImageView) findViewById(R.id.avatar);
        avatar.setScaleType(ImageView.ScaleType.CENTER_CROP);
        avatar.setImageResource(R.drawable.listening_english);
    }

    private void initRecyclerView() {
        recyclerView = (RecyclerView) findViewById(R.id.recycler);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        RecyclerViewAdapter adapter = new RecyclerViewAdapter(this);
        adapter.setOnItemClickListener(this);
        recyclerView.setAdapter(adapter);
        recyclerView.addItemDecoration(new HorizontalDividerItemDecoration.Builder(this).build());
    }

    private void initToolbar() {
        final Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        final ActionBar actionBar = getSupportActionBar();

        if (actionBar != null) {
            actionBar.setHomeAsUpIndicator(R.drawable.ic_menu_black_24dp);
            actionBar.setDisplayHomeAsUpEnabled(true);
        }

        // Toolbar height needs to be known before establishing the initial offset
        toolbar.post(new Runnable() {
            @Override
            public void run() {
                ScrollManager manager = new ScrollManager();
                manager.attach(recyclerView);
                manager.addView(toolbar, ScrollManager.Direction.UP);
                //manager.addView(fab, ScrollManager.Direction.DOWN);
                manager.setInitialOffset(toolbar.getHeight());
            }
        });
    }

    private void setupDrawerLayout() {
        drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);

        NavigationView view = (NavigationView) findViewById(R.id.navigation_view);
        view.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(MenuItem menuItem) {
                Snackbar.make(content, menuItem.getTitle() + " pressed", Snackbar.LENGTH_LONG).show();
                menuItem.setChecked(true);
                drawerLayout.closeDrawers();
                return true;
            }
        });
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case android.R.id.home:
            drawerLayout.openDrawer(GravityCompat.START);
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main_menu, menu);
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public void onItemClick(View view) {
        Intent intent = new Intent(this, Mp3PlayingActivity.class);
        startActivity(intent);
    }
}