开小花苞好爽紧嫩,免费无码成人AV在线播放不卡,最近中文字幕MV第一季歌词

上路傳送眼：

Android練手小項(xiàng)目（KTReader）基于mvp架構(gòu)（四）

GIthub地址: https://github.com/yiuhet/KTReader

上篇文章中我們完成了豆瓣模塊。
而這次我們要做的的就是圖片模塊。

效果圖奉上：

效果圖.gif

總覽一下圖片模塊我們完成的功能有：

圖片瀏覽（三種排序方式）
圖片關(guān)鍵字搜索
圖片詳情查看
圖片下載（可查看和選擇圖片質(zhì)量）
下拉刷新，上拉加載

所用到的一些知識(shí)點(diǎn)有：

Rxjava2 + Retrofit2 + OKhttp3 實(shí)現(xiàn)網(wǎng)絡(luò)請(qǐng)求
下載文件的FileOutputStream用法
下載文件的大小獲取回調(diào)
AlertDialog的適配器視圖和Items視圖
Spinner的簡(jiǎn)單使用
RecycleView的瀑布流布局實(shí)現(xiàn)和踩坑(item重排)
SwipeRefreshLayout布局

可完善和加強(qiáng)的內(nèi)容或功能有：

收藏圖片
圖片詳情頁的美化
下載列表的實(shí)現(xiàn)
下載圖片時(shí)通知欄的進(jìn)度提醒
隨意推薦一張圖片

大體上介紹完畢之后，下面就說說具體的實(shí)現(xiàn)：

1. API的獲取

想要做一個(gè)圖片模塊，數(shù)據(jù)是必不可少的，這里我們直接使用免費(fèi)的api就行了，話說我百度出來的圖片api為啥都是美女圖啊喂，雖然很福利！為嘛找個(gè)綜合圖片的api那么麻煩啊，總之找了好久終于找到了個(gè)好用的api,分享給大家：Unsplash（唯一的不足就是沒有中文的開發(fā)者文檔，不過其實(shí)里面的英語挺好懂的，實(shí)在不行還可以劃詞翻譯嘛）。
另外附上我找資源時(shí)發(fā)現(xiàn)的一個(gè)好東西，以后找api時(shí)可以直接先在這搜：

public-apis
http://apis.io/

總之，注冊(cè)好開發(fā)者賬號(hào)和看了開發(fā)者文檔后就可以直接寫接口了。

api.TupianApi

public interface TupianApi {
    /*
     *Get a single page from the list of all photos.
     * 參數(shù)分別為appId,頁碼，每頁個(gè)數(shù)，排序規(guī)則 (Valid values: latest, oldest, popular; default: latest)
     */
    @GET("photos")
    Observable<List<UnsplashPhotosList>> getUnsplashPhotosList
        (@Query("client_id") String clientId,@Query("page") int page,@Query("per_page") int perPage,
         @Query("order_by") String orderBy);

    @GET("/search/photos")
    Observable<UnsplashPhotoSearch> getSearchUnsplashPhotosList
            (@Query("client_id") String clientId,@Query("query") String query,@Query("page") int page,
             @Query("per_page") int perPage);

    @GET("photos/random")
    Observable<UnsplashPhoto> getUnsplashRandomPhoto(@Query("client_id") String clientId);

    @GET("photos/{id}")
    Observable<UnsplashPhoto> getUnsplashPhoto
        (@Path("id")  String id, @Query("client_id") String clientId);

    @GET("photos/{id}/download")
    Observable<UnsplashUrl> getPhotoDownloadUrl(
            @Path("id")  String id, @Query("client_id") String clientId);

    @GET
    Observable<ResponseBody> getPhotoDownload(@Url String url);

}

然后在RetrofitManager類里添加個(gè)獲取圖片服務(wù)的方法
utils.RetrofitManager

private TupianApi tupianApi;
public TupianApi getTupianService(String url) {
        if (tupianApi == null) {
            tupianApi = new Retrofit.Builder()
                    .baseUrl(url) //必須以‘/’結(jié)尾
                    .addCallAdapterFactory(RxJava2CallAdapterFactory.create())//使用RxJava2作為CallAdapter
                    .client(client)//如果沒有添加,那么retrofit2會(huì)自動(dòng)給我們添加了一個(gè)。
                    .addConverterFactory(GsonConverterFactory.create())//Retrofit2可以幫我們自動(dòng)解析返回?cái)?shù)據(jù)，
                    .build().create(TupianApi.class);
        }
        return tupianApi;
    }

2. 實(shí)現(xiàn)M層

實(shí)體類老規(guī)矩直接GsonFormat生成，不過Unsplash返回的直接是數(shù)組類型，以至于工具生成的實(shí)體類為數(shù)組里的具體項(xiàng)，因此我們?cè)趯慳pi接口時(shí)類型要為L(zhǎng)ist類型，這樣才能解析出列表數(shù)據(jù)。

M層的接口
我們需要的功能為加載查詢的關(guān)鍵字圖片數(shù)據(jù)和默認(rèn)加載數(shù)據(jù)
model.UnsplashPhotoListModel

public interface UnsplashPhotoListModel {
    void loadSearchPhotoList(OnUnsplashPhotoListListener listener,String query);
    void loadPhotoList(OnUnsplashPhotoListListener listener);
}

M層的實(shí)現(xiàn)類
實(shí)現(xiàn)類里我們定義了挺多變量，是為了控制獲取的數(shù)據(jù)數(shù)量和類型。
分別有頁碼，每頁圖片數(shù)量，和排序方式等。
model.UnsplashPhotoListModelImp1

public class UnsplashPhotoListModelImp1 implements UnsplashPhotoListModel{

    private static final String UNSPLASH_APPLICATION_ID = "nideapplicationidya233";
    private static final String UNSPLASH_BASE_URL = "https://api.unsplash.com/";
    private int PAGE = 1;
    private int PAGE_SEARCH = 1;
    private int PER_PAGE = 10;
    private String[] ORDERBY = {"latest", "oldest", "popular"};
    //排序方式 ，0，1，2分別為"latest", "oldest", "popular"。
    private int STATE = 0;
    private TupianApi mTupianApi;

    public UnsplashPhotoListModelImp1() {
        mTupianApi = RetrofitManager
                .getInstence()
                .getTupianService(UNSPLASH_BASE_URL);
    }

    public void setState(int state) {
        STATE = state;
    }

    @Override
    public void loadSearchPhotoList(final OnUnsplashPhotoListListener listener, String query) {
        if (mTupianApi != null) {
            mTupianApi.getSearchUnsplashPhotosList(UNSPLASH_APPLICATION_ID, query, PAGE_SEARCH, PER_PAGE)
                    .subscribeOn(Schedulers.io())
                    .observeOn(AndroidSchedulers.mainThread())
                    .subscribe(new Observer<UnsplashPhotoSearch>() {
                        @Override
                        public void onSubscribe(@NonNull Disposable d) {
                        }

                        @Override
                        public void onNext(@NonNull UnsplashPhotoSearch unsplashPhotosLists) {
                            Log.d("testquery","onNext");
                            listener.onLoadSearchPhotoListSuccess(unsplashPhotosLists);
                            PAGE_SEARCH ++;
                        }

                        @Override
                        public void onError(@NonNull Throwable e) {
                            Log.d("testquery",e.toString());
                            listener.onLoadDataError(e.toString());
                        }

                        @Override
                        public void onComplete() {
                        }
                    });
        }
    }

    @Override
    public void loadPhotoList(final OnUnsplashPhotoListListener listener) {
        if (mTupianApi != null) {
            mTupianApi.getUnsplashPhotosList(UNSPLASH_APPLICATION_ID, PAGE, PER_PAGE, ORDERBY[STATE])
                    .subscribeOn(Schedulers.io())
                    .observeOn(AndroidSchedulers.mainThread())
                    .subscribe(new Observer<List<UnsplashPhotosList>>() {
                        @Override
                        public void onSubscribe(@NonNull Disposable d) {
                        }

                        @Override
                        public void onNext(@NonNull List<UnsplashPhotosList> unsplashPhotosLists) {
                            listener.onLoadPhotoListSuccess(unsplashPhotosLists);
                            PAGE++;
                        }

                        @Override
                        public void onError(@NonNull Throwable e) {
                            listener.onLoadDataError(e.toString());
                        }

                        @Override
                        public void onComplete() {
                        }
                    });
        }
    }
}

3. 實(shí)現(xiàn)V層

首先確定我們要實(shí)現(xiàn)的功能，大致分為4種:

開始獲取數(shù)據(jù)
獲取默認(rèn)數(shù)據(jù)成功
獲取查詢數(shù)據(jù)成功
獲取數(shù)據(jù)失敗

詳情代碼如下
view.UnsplashPhotoListView

public interface UnsplashPhotoListView {
    void onStartGetData();

    void onGetPhotoSuccess(List<UnsplashPhotosList> photosList);

    void onGetSearchPhotoSuccess(UnsplashPhotoSearch photosList);

    void onGetDataFailed(String error);
}

然后可以寫具體的界面
這里我們同樣分析一下界面需要如何實(shí)現(xiàn)：
首先我們需要個(gè)搜索欄和選擇欄，然后再來個(gè)recycleview來加載圖片，為了美觀我們采用瀑布流的布局，當(dāng)內(nèi)容拉到底部時(shí)，我們要加載更多的圖片，這是我們就需要個(gè)變量標(biāo)識(shí)我們需要加載更多的是用戶自己搜索的圖片還是默認(rèn)加載的圖片（哪種排序方式），同時(shí)這個(gè)標(biāo)識(shí)用于傳遞給P層通知它要加載的數(shù)據(jù)類型。

分析完成后就是具體代碼的實(shí)現(xiàn)：
ui.fragment.UnsplashListFragment

public class UnsplashListFragment extends BaseFragment<UnsplashPhotoListView, UnsplashPhotoListPresenterImp1> implements UnsplashPhotoListView, SwipeRefreshLayout.OnRefreshListener {

    private UnsplashListAdapter unsplashListAdapter;
    private int STATE = 0;//當(dāng)前的狀態(tài)
    //擁有的狀態(tài) ：latest", "oldest", "popular"，搜索狀態(tài)。
    private final int STATE_LATEST = 0;
    private final int STATE_OLDEST = 1;
    private final int STATE_POPULAR = 2;
    private final int STATE_SEARCH = 3;
    //記錄搜索狀態(tài)下的搜索項(xiàng)
    private String Query;

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View rootView = super.onCreateView(inflater, container, savedInstanceState);
        unbinder = ButterKnife.bind(this, rootView);
        init();
        return rootView;
    }

    private void init() {
        initRecycleView();
        //監(jiān)聽 SwipeRefreshLayout 事件 上拉就調(diào)用ReLoad方法。
        mContentSwipe.setOnRefreshListener(this);
        //監(jiān)聽 SearchView 事件
        mSvPhoto.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {
                Query = query;
                if (query != null){
                    STATE = STATE_SEARCH;
                } else {
                    STATE = STATE_LATEST;
                }
                ReLoad(query);
                return false;
            }

            @Override
            public boolean onQueryTextChange(String newText) {
                return false;
            }
        });
        //初始化加載數(shù)據(jù) Spinner 開始選擇latest
        mSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                STATE = position;
                ReLoad("");
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {

            }
        });
    }

    private void initRecycleView() {
        contentRecycle.setLayoutManager(new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL));
        contentRecycle.setHasFixedSize(true);
        contentRecycle.setItemAnimator(new DefaultItemAnimator());
        unsplashListAdapter = new UnsplashListAdapter(getContext());
        unsplashListAdapter.setOnItemClickListener(mOnItemClickListener);
        SpacesItemDecoration decoration = new SpacesItemDecoration(12);
        contentRecycle.addItemDecoration(decoration);
        contentRecycle.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                super.onScrollStateChanged(recyclerView, newState);
            }

            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                super.onScrolled(recyclerView, dx, dy);
                if (isSlideToBottom(recyclerView)) {
                    if (STATE == STATE_SEARCH) {
                        mPresenter.getSearchPhotoList(Query);
                    } else {
                        mPresenter.getPhotoList(STATE);
                    }
                }
            }
        });
        contentRecycle.setAdapter(unsplashListAdapter);
    }

    //判斷RecycleView是否到底部
    public static boolean isSlideToBottom(RecyclerView recyclerView) {
        if (recyclerView.computeVerticalScrollExtent() + recyclerView.computeVerticalScrollOffset()
                >= recyclerView.computeVerticalScrollRange()){
            return true;
        }
        return false;
    }

    //RecycleView的item監(jiān)聽事件 點(diǎn)擊item，跳轉(zhuǎn)到相應(yīng)的activity
    private UnsplashListAdapter.OnItemClickListener mOnItemClickListener = new UnsplashListAdapter.OnItemClickListener() {
        @Override
        public void onItemClick(String id,View view) {
            Intent intent = new Intent(getActivity(), UnsplashPhotoActivity.class);
            intent.putExtra("PHOTOID", id);
            CircularAnimUtil.startActivity(getActivity(), intent, view,
                    R.color.colorPrimary);
            toast("you touch me,my id:" + id);
        }
    };

    //重新加載數(shù)據(jù) ，首先清空數(shù)據(jù)，然后根據(jù)當(dāng)前狀態(tài)獲取數(shù)據(jù)
    public void ReLoad(String query) {
        unsplashListAdapter.clearData();
        if (STATE == STATE_SEARCH) {
            mPresenter.getSearchPhotoList(query);
        } else {
            mPresenter.getPhotoList(STATE);
        }
    }

    @Override
    public void onStartGetData() {
        if (mContentSwipe != null) {
            mContentSwipe.setRefreshing(true);
        }
    }

    @Override
    public void onGetPhotoSuccess(List<UnsplashPhotosList> photosList) {
        if (mContentSwipe != null && mContentSwipe.isRefreshing()) {
            mContentSwipe.setRefreshing(false);
        }
        unsplashListAdapter.addData(photosList);
    }

    @Override
    public void onGetSearchPhotoSuccess(UnsplashPhotoSearch photosList) {
        if (mContentSwipe != null && mContentSwipe.isRefreshing()) {
            mContentSwipe.setRefreshing(false);
        }
        unsplashListAdapter.addData(photosList.results);
    }

    @Override
    public void onGetDataFailed(String error) {
        if (mContentSwipe != null && mContentSwipe.isRefreshing()) {
            mContentSwipe.setRefreshing(false);
        }
        toast(error);
    }

    @Override
    protected int getLayoutRes() {
        return R.layout.fragment_unsplash;
    }

    @Override
    protected UnsplashPhotoListPresenterImp1 createPresenter() {
        return new UnsplashPhotoListPresenterImp1(this);
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
        unbinder.unbind();
    }

    @Override
    public void onRefresh() {
        ReLoad("");
    }
}

這里有個(gè)坑，當(dāng)RecycleView設(shè)置為StaggeredGridLayoutManager布局方式時(shí)，我們會(huì)發(fā)現(xiàn)RecycleView的item項(xiàng)會(huì)變位置，原來是每次其高度都隨機(jī)導(dǎo)致，這里我們?cè)赼dapter內(nèi)部維護(hù)一個(gè)高度數(shù)組，讓內(nèi)部的item有著不變的隨機(jī)高度。

其具體實(shí)現(xiàn)代碼我也貼出如下：
adapter.UnsplashListAdapter

public class UnsplashListAdapter extends RecyclerView.Adapter<UnsplashListAdapter.PhotoViewHolder>{

    private List<UnsplashPhotosList> mPhotoList;
    private Context mContext;
    private OnItemClickListener mItemClickListener;
    //用于每個(gè)item的布局
    private LayoutInflater mInflater;
    //瀑布流控制高度
    private List<Integer> mHeights;
    private int currentPos = 0;

    public UnsplashListAdapter(Context context) {
        mContext = context;
        mPhotoList = new ArrayList<>();
        mInflater = LayoutInflater.from(context);
        mHeights = new ArrayList<Integer>();
    }


    public void addData(List<UnsplashPhotosList> unsplashPhotosList) {
        currentPos += mPhotoList.size();
        for (UnsplashPhotosList photosList:unsplashPhotosList){
            mPhotoList.add(photosList);
        }
        for (int i = 0;i<unsplashPhotosList.size();i++){
            mHeights.add((int) (300+Math.random()*300));
        }
        //應(yīng)該局部 刷新 ，有個(gè)bug TODO: 2017/6/11  bug
        //notifyItemRangeChanged(currentPos,unsplashPhotosList.size());
        notifyDataSetChanged();
    }

    //清空數(shù)據(jù)
    public void clearData() {
        currentPos = 0;
        mPhotoList.clear();
        notifyDataSetChanged();
    }


    @Override
    public PhotoViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = mInflater.inflate(R.layout.item_photo, parent, false);
        PhotoViewHolder photoViewHolder = new PhotoViewHolder(view);
        return photoViewHolder;
    }

    @Override
    public void onBindViewHolder(final PhotoViewHolder holder, final int position) {

        ViewGroup.LayoutParams layoutParams = holder.itemView.getLayoutParams();
        layoutParams.height = mHeights.get(position);
        holder.itemView.setLayoutParams(layoutParams);
        Glide.with(mContext)
                .load(mPhotoList.get(position).urls.small)
                .diskCacheStrategy(DiskCacheStrategy.SOURCE)
                .centerCrop()
                .into(holder.mImage);
        holder.mImage.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mItemClickListener != null) {
                    mItemClickListener.onItemClick(mPhotoList.get(position).id,holder.itemView);
                }
            }
        });
    }

    @Override
    public int getItemCount() {
        return mPhotoList == null ? 0:mPhotoList.size();
    }

    class PhotoViewHolder extends RecyclerView.ViewHolder{
        @BindView(R.id.iv_photo)
        ImageView mImage;
        @BindView(R.id.tv_title)
        TextView mTitle;
        public PhotoViewHolder(View itemView) {
            super(itemView);
            ButterKnife.bind(this, itemView);
        }
    }

    public interface OnItemClickListener {
        void onItemClick(String id,View view);
    }

    public void setOnItemClickListener(OnItemClickListener listener) {
        mItemClickListener = listener;
    }

}

4. 實(shí)現(xiàn)P層

P層提供兩個(gè)供V層調(diào)用的方法

getPhotoList(int state)
getSearchPhotoList(String query)

M層在P層的回調(diào)接口
presenter.listener.OnUnsplashPhotoListListener

public interface OnUnsplashPhotoListListener {
    void onLoadPhotoListSuccess(List<UnsplashPhotosList> photosList);

    void onLoadSearchPhotoListSuccess(UnsplashPhotoSearch photosList);

    void onLoadDataError(String error);
}

P層接口
presenter.UnsplashPhotoListPresenter

public interface UnsplashPhotoListPresenter {
    void getPhotoList(int state);
    void getSearchPhotoList(String query);
}

P層實(shí)現(xiàn)類
presenter.imp1.UnsplashPhotoListPresenterImp1

public class UnsplashPhotoListPresenterImp1 extends BasePresenter<UnsplashPhotoListView> implements UnsplashPhotoListPresenter,OnUnsplashPhotoListListener{

    private UnsplashPhotoListView mUnsplashPhotoListView;
    private UnsplashPhotoListModelImp1 mUnsplashPhotoListModelImp1;

    public UnsplashPhotoListPresenterImp1(UnsplashPhotoListView unsplashPhotoListView) {
        mUnsplashPhotoListView = unsplashPhotoListView;
        mUnsplashPhotoListModelImp1 = new UnsplashPhotoListModelImp1();
    }
    @Override
    public void getPhotoList(int state) {
        mUnsplashPhotoListView.onStartGetData();
        mUnsplashPhotoListModelImp1.setState(state);
        mUnsplashPhotoListModelImp1.loadPhotoList(this);
    }

    @Override
    public void getSearchPhotoList(String query) {
        mUnsplashPhotoListView.onStartGetData();
        mUnsplashPhotoListModelImp1.loadSearchPhotoList(this,query);
    }


    @Override
    public void onLoadPhotoListSuccess(List<UnsplashPhotosList> photosList) {
        mUnsplashPhotoListView.onGetPhotoSuccess(photosList);
    }

    @Override
    public void onLoadSearchPhotoListSuccess(UnsplashPhotoSearch photosList) {
        mUnsplashPhotoListView.onGetSearchPhotoSuccess(photosList);
    }

    @Override
    public void onLoadDataError(String error) {
        mUnsplashPhotoListView.onGetDataFailed(error);
    }
}

5. 圖片詳情界面

繁瑣的MVP各層代碼這里就不貼了，參照上面代碼實(shí)現(xiàn)，這只寫下具體的一些方法。

下載圖片
下載圖片的功能寫在M層的實(shí)現(xiàn)類里。
具體實(shí)現(xiàn)是兩個(gè)方法：
- downloadPhoto(final OnUnsplashPhotoListener listener, String id, final String photoName)
  傳的參數(shù)分別為回調(diào)接口，圖片下載url，保存文件名。
- DownloadImage(ResponseBody body,OnUnsplashPhotoListener listener,String photoName)
  傳的參數(shù)分別為網(wǎng)絡(luò)請(qǐng)求返回?cái)?shù)據(jù)，回調(diào)接口，保存文件名。方法內(nèi)部實(shí)現(xiàn)了將返回的字節(jié)流寫入文件的功能。

model.UnsplashPhotoModelImp1

 public void downloadPhoto(final OnUnsplashPhotoListener listener, String id, final String photoName) {
       if (mTupianApi != null) {
           mTupianApi.getPhotoDownload(id)
                   .subscribeOn(Schedulers.io())
                   .map(new Function<ResponseBody, Boolean>() {
                       @Override
                       public Boolean apply(@NonNull ResponseBody responseBody) throws Exception {
                           return DownloadImage(responseBody,listener,photoName);
                       }
                   })
                   .observeOn(AndroidSchedulers.mainThread())
                   .subscribe(new Observer<Boolean>() {
                       @Override
                       public void onSubscribe(@NonNull Disposable d) {

                       }

                       @Override
                       public void onNext(@NonNull Boolean aBoolean) {
                            if (aBoolean) {
                                listener.onDownloadSuccess();
                            }
                       }

                       @Override
                       public void onError(@NonNull Throwable e) {
                           listener.onLoadDataError(e.toString());
                       }

                       @Override
                       public void onComplete() {

                       }
                   });
        }
    }

 private boolean DownloadImage(ResponseBody body,OnUnsplashPhotoListener listener,String photoName) {
        try {
            InputStream in;
            in = null;
            FileOutputStream out = null;

            try {
                in = body.byteStream();
                //String dir = Environment.getExternalStorageDirectory() + "/KTReader/";
                out = new FileOutputStream(MyApplication.getAppCacheDir()+ File.separator + photoName + ".jpg");
                byte[] buf = new byte[1024];

                while ((in.read(buf)) != -1) {
                    out.write(buf);
                }

            }
            catch (IOException e) {
                return false;
            }
            finally {
                if (in != null) {
                    in.close();
                }
                if (out != null) {
                    out.close();
                }
            }
            return true;

        } catch (IOException e) {
            listener.onLoadDataError(e.toString());
            return false;
        }
    }

在model層的實(shí)現(xiàn)類里還有一個(gè)獲取圖片大小的方法：
使用了Rxjava2的異步調(diào)用。

public void getPhotoSize(final OnUnsplashPhotoListener listener, final String urlString, final int pos) {
        Flowable.just(urlString)
                .subscribeOn(Schedulers.io())
                .map(new Function<String, Integer>() {
                    @Override
                    public Integer apply(@NonNull String s) throws Exception {
                        int size = -1;
                        try {
                            URL url = new URL(urlString);
                            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                            connection.setRequestMethod("GET");
                            size = connection.getContentLength();
                            return size;
                        }catch (Exception e) {
                            e.printStackTrace();
                        }
                        return size;
                    }
                })
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Consumer<Integer>() {
                    @Override
                    public void accept(@NonNull Integer s) throws Exception {
                        listener.onLoadSizeSuccess(s, pos);
                    }
                });

    }

這里最終返回的大小會(huì)在View層的彈出框中呈現(xiàn)，使得用戶可以根據(jù)自身需求下載不同質(zhì)量的圖片。

下面就說說view層的彈出框的寫法：

我們想要的功能是彈出對(duì)話框，然后呈現(xiàn)不同質(zhì)量圖片的大小，這就需要在對(duì)話框create之后更新視圖，這里我們選擇setAdapter的做法（還有一種我知道的是setView，然后更新view里的Textview等子布局），首先我們寫個(gè)簡(jiǎn)單的adapter：

    private String[] itemsSize = { "raw (大小正在計(jì)算中)","full (大小正在計(jì)算中)","regularl (大小正在計(jì)算中)","small (大小正在計(jì)算中)" };
    private String[] items = { "raw","full","regular","small" };
    ArrayAdapter<String> adapter;

final Context dialogContext = new ContextThemeWrapper(this,
                android.R.style.Theme_Light);
        final LayoutInflater dialogInflater = (LayoutInflater) dialogContext
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        adapter = new ArrayAdapter<String>(this,
                R.layout.item_dialog_list, itemsSize) {
            @Override
            public View getView(int position, View convertView, ViewGroup parent) {
                if (convertView == null) {
                    convertView = dialogInflater.inflate(
                            R.layout.item_dialog_list, parent, false);
                }

                final TextView text1 = (TextView) convertView
                        .findViewById(R.id.tv);
                final String display = this.getItem(position);
                text1.setText(display);

                return convertView;
            }
        };

然后構(gòu)建AlertDialog時(shí)傳進(jìn)adapter：

AlertDialog.Builder listDialog = new AlertDialog.Builder(this)
                .setTitle("選擇要下載的圖片質(zhì)量：")
                .setAdapter(adapter, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        toast("已添加進(jìn)下載任務(wù)，圖片質(zhì)量" + itemsSize[which] );
                        switch (which) {
                            case 0:
                                mPresenter.downLoadPhoto(mUnsplashPhoto.urls.raw,
                                        mUnsplashPhoto.id + "(" + items[which] + ")");
                                break;
                            case 1:
                                mPresenter.downLoadPhoto(mUnsplashPhoto.urls.full,
                                        mUnsplashPhoto.id + "(" + items[which] + ")");
                                break;
                            case 2:
                                mPresenter.downLoadPhoto(mUnsplashPhoto.urls.regular,
                                        mUnsplashPhoto.id + "(" + items[which] + ")");
                                break;
                            case 3:
                                mPresenter.downLoadPhoto(mUnsplashPhoto.urls.small,
                                        mUnsplashPhoto.id + "(" + items[which] + ")");
                                break;
                            default:
                                break;
                        }

                    }
                })
                .setPositiveButton("取消下載", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                    }
                });
        listDialog.show();

以上AlertDialog的構(gòu)建我們封裝為方法showListDialog（）以方便調(diào)用；

最后我們?cè)谙鄳?yīng)的下載布局添加點(diǎn)擊事件讓P層調(diào)用M層的獲取大小方法并返回，然后更新AlertDialog的數(shù)據(jù)：

@OnClick({R.id.button_collect, R.id.button_detail, R.id.button_download})
    public void onViewClicked(View view) {
        switch (view.getId()) {
            case R.id.button_download:
                mPresenter.getPhotoSize(mUnsplashPhoto.urls.raw,0);
                mPresenter.getPhotoSize(mUnsplashPhoto.urls.full,1);
                mPresenter.getPhotoSize(mUnsplashPhoto.urls.regular,2);
                mPresenter.getPhotoSize(mUnsplashPhoto.urls.small,3);
                showListDialog();
                break;
        }
    }

最后我們?cè)诔晒卣{(diào)的函數(shù)里改變adapter的數(shù)據(jù)，然后更新adapter：

@Override
    public void onGetSizeSuccess(int size,int pos) {
        itemsSize[pos] = String.format(items[pos] + "       (圖片大約" + size/1024 + "K)");;
        adapter.notifyDataSetChanged();
    }

至此，我們的下載選擇彈出框功能就完成了。

而圖片的詳細(xì)內(nèi)容顯示我們?yōu)榱朔奖阃瑯邮褂肁lertDialog完成，這次簡(jiǎn)單的使用他的setItems方法，然后傳進(jìn)對(duì)應(yīng)數(shù)據(jù)就可以簡(jiǎn)單顯示了。

private void showPhotoDetail() {
        String[] detailItems = {
//                "標(biāo)題:  " + mUnsplashPhoto.location.title,
//                "作者:  " + mUnsplashPhoto.location.name,
                "拍攝時(shí)間:  " + mUnsplashPhoto.createdAt,
                "拍攝設(shè)備:  " + mUnsplashPhoto.exif.make,
                "寬度:  " + mUnsplashPhoto.width,
                "高度:  " + mUnsplashPhoto.height,
                "保存路徑:  " + MyApplication.getAppCacheDir()+ File.separator + mUnsplashPhoto.id + ".jpg"};
        AlertDialog.Builder builder = new AlertDialog.Builder(this)
                .setTitle("Photo 詳情")
                .setItems(detailItems, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                    }
                })
                .setPositiveButton("確定", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                    }
                });
        builder.show();
    }

以上，便是KTReader的圖片模塊，功能略單一，代碼也只是小白水平，如有批評(píng)建議，歡迎指正。

三个男躁一个女,国精产品一区一手机的秘密,麦子交换系列最经典十句话,欧美国产综合欧美视频

Android練手小項(xiàng)目（KTReader）基于mvp架構(gòu)（五）

Android練手小項(xiàng)目（KTReader）基于mvp架構(gòu)（五）

上路傳送眼：

1. API的獲取

2. 實(shí)現(xiàn)M層

3. 實(shí)現(xiàn)V層

4. 實(shí)現(xiàn)P層

5. 圖片詳情界面

推薦閱讀更多精彩內(nèi)容

三个男躁一个女,国精产品一区一手机的秘密,麦子交换系列最经典十句话,欧美 国产 综合 欧美 视频

Android練手小項(xiàng)目（KTReader）基于mvp架構(gòu)（五）

上路傳送眼：

1. API的獲取

2. 實(shí)現(xiàn)M層

3. 實(shí)現(xiàn)V層

4. 實(shí)現(xiàn)P層

5. 圖片詳情界面

推薦閱讀更多精彩內(nèi)容

三个男躁一个女,国精产品一区一手机的秘密,麦子交换系列最经典十句话,欧美国产综合欧美视频