Android-多列表的项目(Rxjava+Rtrofit+Recyclerview+Glide+Adapter封装)之(一)项目架构.doc

Android-多列表的项目（Rxjava+Rtrofit+Recyclerview+Glide+Adapter封装）之（一）项目架构项目介绍：1.这是一个简易使用的网络请求封装项目，可快速移植实现安卓网络层的开发；2.这是一个常见的app模板，使用较好的app架构，并实现一系列的优化。先上几张图看看如例子的两个页面可以看到就是想这样的样式，以及请求，我们在android应用开发中经常遇到。好了，废话不多说，下面开始正文。文章结构：（1）整个应用的架构模式；（2）Activity和Fragment的封装；一、 整个应用的架构模式：M层就是我的bean包了，C层则由activity来担当，V层则由自定义view以及xml文件来担当。contronller（控制器）是一个中间桥梁的作用，通过接口通信来协同 View（视图）和Model（模型）工作，起到了两者之间的通信作用。二、 Activity和Fragment的封装：可以看到，我封装了三层抽象activity，各自负责不同的业务。这个是很常见的app的activity封装。1.BaseActivity是app设计中的最高父类，则由它处理一些加载的优化，以及使用了模板模式，制定一系列的抽象方法，管理相关的app整体功能（如退出整个app）。public abstract class BaseActivity extends AppCompatActivity /存储全部activity private static List activities = new ArrayList(); Override protected void onCreate(Nullable Bundle savedInstanceState) super.onCreate(savedInstanceState); Logger.i(Activity- + getClass().getSimpleName(); addActivity(this); if (getLayoutId() != 0) setContentView(getLayoutId(); else throw new IllegalArgumentException(返回一个正确的ContentView); ButterKnife.bind(this);/ButterKnife必须在这里bing，也就是初始化，那么其余activity就不用顾及这个了 initView();/模板模式 initEvent(); loadData(); protected abstract int getLayoutId(); protected abstract void initView(); protected abstract void initEvent(); protected abstract void loadData(); Override protected void onPause() super.onPause(); removeActivity(this);/释放所有资源 / 添加Activity到容器中 private void addActivity(Activity activity) if (activity != null & !activities.contains(activity) activities.add(activity); private void removeActivity(Activity activity) if (activity != null & activities.contains(activity) activities.remove(activity); / 退出整个APP public static void exit() if (activities != null & activities.size() 0) for (Activity activity : activities) activity.finish(); System.exit(0); 2.ToolbarActivity是每个activity需要标题栏封装；主要是为了节省代码，并使得继承此activity的activity得以逻辑更加清晰。public abstract class ToolbarActivity extends BaseActivity BindView(R.id.toolbar) Toolbar toolbar; BindView(R.id.title) public TextView title; Override protected void onCreate(Nullable Bundle savedInstanceState) super.onCreate(savedInstanceState); toolbar.setTitle();/节省代码啦，以后app的activity不用再为标题烦恼 setSupportActionBar(toolbar); if (getSupportActionBar() != null) getSupportActionBar().setDisplayHomeAsUpEnabled(true);/决定左上角的图标是否可以点击 toolbar.setNavigationOnClickListener(new View.OnClickListener() Override public void onClick(View v) finish(); ); 3.DrawerActivity是抽屉activity；这样写的话，让MainActivity去继承就会使main的代码更加简洁，并且可以复用代码public abstract class DrawerActivity extends ToolbarActivity implements NavigationView.OnNavigationItemSelectedListener BindView(R.id.navigation_view) NavigationView navigationView; BindView(R.id.drawer_layout) DrawerLayout drawerLayout; Override protected void onCreate(Nullable Bundle savedInstanceState) super.onCreate(savedInstanceState); ActionBarDrawerToggle drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.drawer_open, R.string.drawer_close); drawerToggle.syncState();/该方法会自动和actionBar关联, 将开关的图片显示在了action上，如果不设置，也可以有抽屉的效果，不过是默认的图标 drawerLayout.setDrawerListener(drawerToggle); drawerToggle.setDrawerIndicatorEnabled(false); toolbar.setNavigationIcon(R.drawable.toolbar_navigation);/设置那个抽屉图片，主要看美工了，美工要规定那个图片大小，我这里是随便放的 toolbar.setNavigationOnClickListener(new View.OnClickListener() Override public void onClick(View v) drawerLayout.openDrawer(Gravity.LEFT); ); navigationView.setNavigationItemSelectedListener(this); Override public boolean onNavigationItemSelected(MenuItem item) switch (item.getItemId() case R.id.publish: /跳转的activity在这里建立/ startActivity(new Intent(this, PublishActivity.class); drawerLayout.closeDrawers(); return true; case R.id.published:/ startActivity(new Intent(this, PublishedActivity.class); drawerLayout.closeDrawers(); return true; case R.id.growth:/ startActivity(new Intent(this, GrowthActivity.class); drawerLayout.closeDrawers(); break; case R.id.collect:/ startActivity(new Intent(this, CollectionActivity.class); drawerLayout.closeDrawers(); return true; case R.id.setting:/ startActivity(new Intent(this, SettingActivity.class); drawerLayout.closeDrawers(); return true; return super.onContextItemSelected(item); 所以继承DrawerActivity的MainActivity的代码就十分的简洁了，而且其他的activity也可以继承ToolbarActivity从而实现复用了。public class MainActivity extends DrawerActivity private static final int PAGE_LIMIT = 4;/这里是限定预加载的页面个数，不用Fragment重新去onCreate。使用这个就是去优化页面，从而viewpager去缓存view BindView(R.id.tab_layout) TabLayout tabLayout; BindView(R.id.viewpager) NoScrollViewPager viewPager; Override protected int getLayoutId() return R.layout.activity_main; Override protected void initView() Override protected void initEvent() if (Build.VERSION.SDK_INT = Build.VERSION_CODES.M) String packageName = getPackageName(); PowerManagerpm=(PowerManager) getSystemService(Context.POWER_SERVICE); if (!pm.isIgnoringBatteryOptimizations(packageName) Intent intent = w Intent(); intent.setAction(vider.Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS); intent.setData(Uri.parse(package: + packageName); startActivity(intent); Override protected void loadData() List fragments = new ArrayList(); fragments.add(new AbilityFragment(); fragments.add(new AttentionFragment(); fragments.add(new DiscoveryFragment(); fragments.add(new ArenaFragment(); ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager(), fragments); viewPager.setAdapter(adapter); viewPager.setOffscreenPageLimit(PAGE_LIMIT); tabLayout.setupWithViewPager(viewPager); for (int i = 0; i tabLayout.getTabCount(); i+) TabLayout.Tab tab = tabLayout.getTabAt(i); Drawable drawable = null; switch (i) case 0: drawable = ContextCompat.getDrawable(this, R.drawable.tab_item_home); break; case 1: drawable = ContextCompat.getDrawable(this, R.drawable.tab_item_attention); break; case 2: drawable = ContextCompat.getDrawable(this, R.drawable.tab_item_discovery); break; case 3: drawable = ContextCompat.getDrawable(this, R.drawable.tab_item_arena); break; if (tab != null) tab.setIcon(drawable); 同样的，我们可以看到我写了三个抽象fragment，分别负责不同的业务。1.BaseFragment。主要有模板模式的方法，fragment的懒加载解析懒加载： setUserVisibleHint方法用于告诉系统，这个Fragment的UI是否是可见的。所以我们只需要继承Fragment并重写该方法，即可实现在fragment可见时才进行数据加载操作，即Fragment的懒加载。public abstract class BaseFragment extends Fragment private Handler handler = new Handler(); private Runnable loadDataTask = new Runnable() Override public void run() loadData(); ; Nullable Override public View onCreateView(LayoutInflater inflater, Nullable ViewGroup container, Nullable Bndle savedInstanceState) View view = inflater.inflate(getLayoutId(), container, false); ButterKnife.bind(this, view); return view; Override public void onViewCreated(View view, Nullable Bundle savedInstanceState) initView(); initEvent(); / 延迟加载数据，减少卡顿 handler.postDelayed(loadDataTask, 500); Override public void setUserVisibleHint(boolean isVisibleToUser) super.setUserVisibleHint(isVisibleToUser); /做了个判断，判断isVisibleToUser只有为true，才去执行loadData()方法加载网络(或本地)数据。 if (!isVisibleToUser) handler.removeCallbacks(loadDataTask); protected abstract void initView(); protected abstract void initEvent(); protected abstract void loadData(); protected abstract int getLayoutId();2.RecyclerViewFragment，因为RecyclerView在多列表app中占很多部分，所以我抽离它作为一层fragment来编写，方便代码复用。还有此fragment还要完成下拉刷新的消息通知，子类实现复用。public abstract class RecyclerViewFragment extends BaseFragment implements SwipeRefreshLayout.OnRefreshListener protected static final int REFRESH = 0x101; BindView(R.id.recycler_view) RecyclerView recyclerView; BindView(R.id.swipeRefreshLayout) SwipeRefreshLayout swipeRefreshLayout; protected RecyclerView.Adapter adapter;/一个handle让子类覆写onrefresh去通知父类，然后父类调用handler实现复用。 private Handler handler = new Handler() Override public void handleMessage(Message msg) switch (msg.what) case REFRESH: swipeRefreshLayout.setRefreshing(false); break; ; Override protected void initView() FullyLinearLayoutManager layoutManager = new FullyLinearLayoutManager(getActivity(), LinearLayout.VERTICAL, false); layoutManager.setSmoothScrollbarEnabled(true); recyclerView.setLayoutManager(layoutManager); recyclerView.setNestedScrollingEnabled(false); swipeRefreshLayout.setSize(SwipeRefreshLayout.LARGE); swipeRefreshLayout.setColorSchemeResources(R.color.colorArenaGreen, R.color.colorAccent, R.color.colorMainDividerLine); Override protected void initEvent() swipeRefreshLayout.setOnRefreshListener(this); Override protected void loadData() adapterBuilder(); recyclerView.setAdapter(adapter); /子activity设置适配器 protected abstract void adapterBuilder(); Override public void onRefresh() /todo 网络请求任务 handler.sendEmptyMessageDelayed(REFRESH, 3000); 3.BannerFragment主要完成轮播图的封装，考虑广告众多app提供了一层。public abstract class BannerFragment extends RecyclerViewFragment implements OnItemClickListener private static final long LOOP_TIME = 5000;/此轮播使用的是第三方的控件，实际项目开发时为了方便而使用的一个库。 BindView(R.id.banner) ConvenientBanner convenientBanner; protected abstract List getBitmapList(); protected oid loadConvenientBanner() convenientBanner.setPages(new CBViewHolderCreator() Override public LocalImageHolderView createHolde