0.效果图
效果图依次为发现界面顶部，包含首页轮播图，水平滚动的按钮，推荐歌单；然后是发现界面推荐单曲，点击单曲就是直接进入播放界面；最后是全局播放控制条上点击播放列表按钮显示的播放列表弹窗。
1.整体分析
整体使用RecycerView实现，每个不同的块是一个Item，例如：轮播图是一个Item，按钮也是，推荐歌单和下面的歌单是，推荐单曲，还有最后的自定义首页那块也是一样。
提示：之所以把推荐歌单下面的歌单和推荐歌单标题放一个Item，主要是首页要实现自定义顺序功能，更方便管理。
2.轮播图
2.1 布局
<?xml version="1.0" encoding="utf-8"?><androidx.constraintlayout.widget.ConstraintLayout xmlns:android="/apk/res/android"android:layout_width="match_parent"xmlns:app="/apk/res-auto"android:layout_height="wrap_content"android:layout_margin="@dimen/padding_outer"><com.youth.banner.Bannerandroid:id="@+id/banner"android:layout_width="0dp"android:layout_height="0dp"app:layout_constraintDimensionRatio="H,0.389"app:layout_constraintLeft_toLeftOf="parent"app:layout_constraintRight_toRightOf="parent"app:layout_constraintTop_toTopOf="parent" /></androidx.constraintlayout.widget.ConstraintLayout>
2.2 显示数据
//bannerBannerData data = (BannerData) d;Banner bannerView = holder.getView(R.id.banner);BannerImageAdapter<Ad> bannerImageAdapter = new BannerImageAdapter<Ad>(data.getData()) {@Overridepublic void onBindView(BannerImageHolder holder, Ad data, int position, int size) {ImageUtil.show(getContext(), (ImageView) holder.itemView, data.getIcon());}};bannerView.setAdapter(bannerImageAdapter);bannerView.setOnBannerListener(onBannerListener);bannerView.setBannerRound(DensityUtil.dip2px(getContext(), 10));//添加生命周期观察者bannerView.addBannerLifecycleObserver(fragment);bannerView.setIndicator(new CircleIndicator(getContext()));
按钮
3.1 布局
<?xml version="1.0" encoding="utf-8"?><HorizontalScrollView xmlns:android="/apk/res/android"android:layout_width="match_parent"android:layout_height="wrap_content"android:paddingVertical="@dimen/padding_outer"android:scrollbars="none"><LinearLayoutandroid:id="@+id/container"android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"android:paddingHorizontal="@dimen/padding_meddle"></LinearLayout></HorizontalScrollView>
3.2 显示数据
LinearLayout container = holder.getView(R.id.container);if (container.getChildCount() > 0) {//已经添加了return;}//横向显示5个半float containerWidth = ScreenUtil.getScreenWith(container.getContext()) - DensityUtil.dip2px(container.getContext(), 10 * 2);int itemWidth = (int) (containerWidth / 5.5);DiscoveryButtonBinding binding;LinearLayout.LayoutParams layoutParams;for (IconTitleButtonData it : data.getData()) {binding = DiscoveryButtonBinding.inflate(LayoutInflater.from(getContext()));binding.icon.setImageResource(it.getIcon());binding.title.setText(it.getTitle());if (it.getIcon() == R.drawable.day_recommend) {SuperViewUtil.show(binding.more);//显示日期binding.more.setText(String.valueOf(SuperDateUtil.currentDay()));}//设置点击事件binding.getRoot().setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {}});layoutParams = new LinearLayout.LayoutParams(itemWidth, ViewGroup.LayoutParams.WRAP_CONTENT);container.addView(binding.getRoot(), layoutParams);}
4.推荐歌单
4.1 布局
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="/apk/res/android"android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical"><include layout="@layout/item_discovery_title" /><androidx.recyclerview.widget.RecyclerViewandroid:id="@+id/list"android:layout_width="match_parent"android:layout_height="wrap_content"android:paddingHorizontal="@dimen/padding_outer"android:paddingBottom="@dimen/d5" /></LinearLayout>
4.2 显示数据
private void bindSheetData(BaseViewHolder holder, SheetData data) {//设置标题，将标题放到每个具体的item上，好处是方便整体排序holder.setText(R.id.title, R.string.recommend_sheet);//显示更多容器holder.setVisible(R.id.more, true);holder.getView(R.id.more).setOnClickListener(v -> {});RecyclerView listView = holder.getView(R.id.list);if (listView.getAdapter() == null) {//设置显示3列GridLayoutManager layoutManager = new GridLayoutManager(listView.getContext(), 3);listView.setLayoutManager(layoutManager);sheetAdapter = new SheetAdapter(R.layout.item_sheet);//item点击sheetAdapter.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(@NonNull BaseQuickAdapter<?, ?> adapter, @NonNull View view, int position) {if (discoveryAdapterListener != null) {discoveryAdapterListener.onSheetClick((Sheet) adapter.getItem(position));}}});listView.setAdapter(sheetAdapter);GridDividerItemDecoration itemDecoration = new GridDividerItemDecoration(getContext(), (int) DensityUtil.dip2px(getContext(), 5F));listView.addItemDecoration(itemDecoration);}sheetAdapter.setNewInstance(data.getData());}
5. 底部
5.1 布局
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="/apk/res/android"xmlns:app="/apk/res-auto"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginVertical="@dimen/padding_outer"android:gravity="center_horizontal"android:orientation="vertical"><androidx.appcompat.widget.LinearLayoutCompatandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:gravity="center_vertical"><TextViewandroid:id="@+id/refresh_button"android:layout_width="wrap_content"android:layout_height="wrap_content"android:drawableLeft="@drawable/refresh"android:gravity="center_vertical"android:text="@string/click_refresh"android:textColor="@color/link"android:textSize="@dimen/text_small" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="@dimen/padding_small"android:text="@string/change_content"android:textColor="@color/black80"android:textSize="@dimen/text_small" /></androidx.appcompat.widget.LinearLayoutCompat><com.google.android.material.button.MaterialButtonandroid:id="@+id/custom"style="@style/Widget.MaterialComponents.Button.UnelevatedButton"android:layout_width="wrap_content"android:layout_height="@dimen/d30"android:layout_marginTop="@dimen/padding_outer"android:backgroundTint="?attr/colorSurface"android:insetTop="0dp"android:insetBottom="0dp"android:text="@string/custom_discovery"android:textColor="@color/black80"android:textSize="@dimen/text_small"app:cornerRadius="@dimen/d15"app:elevation="0dp"app:strokeColor="@color/black80"app:strokeWidth="@dimen/d0_5" /></LinearLayout>
5.2 显示数据
holder.getView(R.id.refresh_button).setOnClickListener(v -> discoveryAdapterListener.onRefreshClick());holder.getView(R.id.custom).setOnClickListener(v -> discoveryAdapterListener.onCustomDiscoveryClick());
6.迷你控制条
他是一个自定义Fragment，哪里要显示就放到哪里就行了。
7.播放列表弹窗
/*** 播放列表对话框*/public class MusicPlayListDialogFragment extends BaseViewModelBottomSheetDialogFragment<FragmentDialogAudioPlayListBinding> {...@Overrideprotected void initListeners() {super.initListeners();//删除所有按钮点击binding.deleteAll.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {//关闭对话框dismiss();//删除全部音乐getMusicListManager().deleteAll();}});//item中子控件点击//删除按钮点击adapter.addChildClickViewIds(R.id.delete);adapter.setOnItemChildClickListener(new OnItemChildClickListener() {@Overridepublic void onItemChildClick(BaseQuickAdapter adapter, View view, int position) {//由于这里只有一个按钮点击//所以可以不判断if (R.id.delete == view.getId()) {//删除按钮点击removeItem(position);}}});//循环模式点击binding.loopModel.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {//更改循环模式getMusicListManager().changeLoopModel();//显示循环模式showLoopModel();}});//设置item点击事件adapter.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(BaseQuickAdapter adapter, View view, int position) {//关闭dialog//可以根据具体的业务逻辑来决定是否关闭dismiss();//播放点击的这首音乐getMusicListManager().play(getMusicListManager().getDatum().get(position));}});}private void removeItem(int position) {adapter.removeAt(position);//从列表管理器中删除getMusicListManager().delete(position);showCount();}/*** 显示循环模式*/private void showLoopModel() {PlayListUtil.showLoopModel(getMusicListManager().getLoopModel(), binding.loopModel);}private void showCount() {binding.count.setText(String.format("(%d)", getMusicListManager().getDatum().size()));}}
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