如何在android中解析复杂的JSON文件

概述我需要解析这个json字符串{"results":{"result":[{"cover":"http://ia.media-imdb.com/images/M/MV5BMjMyOTM4MDMxNV5BMl5BanBnXkFtZTcwNjIyNzExOA@@._V1._SX54_CR0,0,54,74_.jpg","title

我需要解析这个Json字符串

 {"results": {    "result": [        {            "cover": "http://ia.media-imdb.com/images/M/MV5BMjMyOTM4MDMxNV5BMl5BanBnXkFtZTcwNjIyNzExOA@@._V1._SX54_CR0,0,54,74_.jpg",            "Title": "The Amazing SpIDer-Man",            "year": "(2012",            "director": "marc Webb",            "rating": "7.3",            "details": "http://www.imdb.com/Title/tt0948470/"        },        {            "cover": "http://i.media-imdb.com/images/SF1f0a42ee1aa08d477a576fbbf7562eed/realm/feature.gif",            "Title": "The Amazing SpIDer-Man 2",            "year": "(2014",            "director": "N/A",            "rating": "N/A",            "details": "http://www.imdb.com/Title/tt1872181/"        },        {            "cover": "http://ia.media-imdb.com/images/M/MV5BMzk3MTE5MDU5NV5BMl5BanBnXkFtZTYwMjY3NTY3._V1._SX54_CR0,0,54,74_.jpg",            "Title": "SpIDer-Man",            "year": "(2002",            "director": "Sam Raimi",            "rating": "7.3",            "details": "http://www.imdb.com/Title/tt0145487/"        },        {            "cover": "http://ia.media-imdb.com/images/M/MV5BODUwMDc5Mzc5M15BMl5BanBnXkFtZTcwNDgzOTY0MQ@@._V1._SX54_CR0,0,54,74_.jpg",            "Title": "SpIDer-Man 3",            "year": "(2007",            "director": "Sam Raimi",            "rating": "6.3",            "details": "http://www.imdb.com/Title/tt0413300/"        },        {            "cover": "http://ia.media-imdb.com/images/M/MV5BMjE1ODcyODYxMl5BMl5BanBnXkFtZTcwNjA1NDE3MQ@@._V1._SX54_CR0,0,54,74_.jpg",            "Title": "SpIDer-Man 2",            "year": "(2004",            "director": "Sam Raimi",            "rating": "7.5",            "details": "http://www.imdb.com/Title/tt0316654/"        }    ]}}

我得到了所有的数据…但我无法显示我从“封面”标签获得的图像网址…从这里开始做什么最简单的方法..？ http://ia.media-imdb.com/images/M/MV5BMjMyOTM4MDMxNV5BMl5BanBnXkFtZTcwNjIyNzExOA@@._V1._SX54_CR0,0,54,74_.jpg

我已经从http Json数据在ListvIEw中实现了AndroID Lazy Loading图像和文本,现在我想让列表项可以点击,我无法弄清楚如何为这个案例做到这一点

    public class MainActivity extends Activity {ListVIEw mListVIEw;@OverrIDepublic voID onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentVIEw(R.layout.activity_main);        final TextVIEw txts=(TextVIEw) findVIEwByID(R.ID.textVIEw1);    String URL1=getIntent().getExtras().getString("URL");    // URL to the JsON data     String strUrl = URL1;    // Creating a new non-ui thread task to download Json data     DownloadTask downloadTask = new DownloadTask();    // Starting the download process    downloadTask.execute(strUrl);    // Getting a reference to ListVIEw of activity_main    mListVIEw = (ListVIEw) findVIEwByID(R.ID.lv_countrIEs);   }    /** A method to download Json data from url */    private String downloadUrl(String strUrl) throws IOException{    String data = "";    inputStream iStream = null;    try{            URL url = new URL(strUrl);            // Creating an http connection to communicate with url             httpURLConnection urlConnection = (httpURLConnection) url.openConnection();            // Connecting to url             urlConnection.connect();            // Reading data from url             iStream = urlConnection.getinputStream();            BufferedReader br = new BufferedReader(new inputStreamReader(iStream));            StringBuffer sb  = new StringBuffer();            String line = "";            while( ( line = br.readline())  != null){                sb.append(line);            }            data = sb.toString();            br.close();    }catch(Exception e){            Log.d("Exception while downloading url", e.toString());    }finally{            iStream.close();    }    return data;      }      /** AsyncTask to download Json data */     private class DownloadTask extends AsyncTask<String, Integer, String>{    String data = null;            @OverrIDe            protected String doInBackground(String... url) {                    try{                        data = downloadUrl(url[0]);                    }catch(Exception e){                        Log.d("Background Task",e.toString());                    }                    return data;            }            @OverrIDe            protected voID onPostExecute(String result) {                    // The parsing of the xml data is done in a non-ui thread                     ListVIEwLoaderTask ListVIEwLoaderTask = new ListVIEwLoaderTask();                    // Start parsing xml data                    ListVIEwLoaderTask.execute(result);            }      }    /** AsyncTask to parse Json data and load ListVIEw */     private class ListVIEwLoaderTask extends AsyncTask<String, VoID, SimpleAdapter>{    JsONObject jObject;    // Doing the parsing of xml data in a non-ui thread     @OverrIDe    protected SimpleAdapter doInBackground(String... strjson) {        try{            jObject = new JsONObject(strjson[0]);            CountryJsONParser countryJsonParser = new CountryJsONParser();            countryJsonParser.parse(jObject);        }catch(Exception e){            Log.d("JsON Exception1",e.toString());        }        // Instantiating Json parser class        CountryJsONParser countryJsonParser = new CountryJsONParser();        // A List object to store the parsed countrIEs List        List<HashMap<String, Object>> countrIEs = null;        try{            // Getting the parsed data as a List construct            countrIEs = countryJsonParser.parse(jObject);        }catch(Exception e){            Log.d("Exception",e.toString());        }                  // Keys used in Hashmap         String[] from = { "country","flag","details"};        // IDs of vIEws in ListvIEw_layout        int[] to = { R.ID.tv_country,R.ID.iv_flag,R.ID.tv_country_details};        // Instantiating an adapter to store each items        // R.layout.ListvIEw_layout defines the layout of each item                 SimpleAdapter adapter = new SimpleAdapter(getBaseContext(), countrIEs,                return adapter;    }    /** Invoked by the AndroID on "doInBackground" is executed */    @OverrIDe    protected voID onPostExecute(SimpleAdapter adapter) {        // Setting adapter for the ListvIEw        mListVIEw.setAdapter(adapter);        for(int i=0;i<adapter.getCount();i++){            HashMap<String, Object> hm = (HashMap<String, Object>) adapter.getItem(i);            String imgurl = (String) hm.get("flag_path");            ImageLoaderTask imageLoaderTask = new ImageLoaderTask();            HashMap<String, Object> hmDownload = new HashMap<String, Object>();            hm.put("flag_path",imgurl);            hm.put("position", i);            // Starting ImageLoaderTask to download and populate image in the ListvIEw             imageLoaderTask.execute(hm);        }    }       }   /** AsyncTask to download and load an image in ListVIEw */  private class ImageLoaderTask extends AsyncTask<HashMap<String, Object>, VoID, HashMap<St    @OverrIDe    protected HashMap<String, Object> doInBackground(HashMap<String, Object>... hm) {        inputStream iStream=null;        String imgurl = (String) hm[0].get("flag_path");        int position = (Integer) hm[0].get("position");        URL url;        try {            url = new URL(imgurl);            // Creating an http connection to communicate with url            httpURLConnection urlConnection = (httpURLConnection) url.openConnection();            // Connecting to url                            urlConnection.connect();            // Reading data from url             iStream = urlConnection.getinputStream();            // Getting Caching directory             file cacheDirectory = getBaseContext().getCacheDir();            // Temporary file to store the downloaded image             file tmpfile = new file(cacheDirectory.getPath() + "/wpta_"+position+".png");                           // The fileOutputStream to the temporary file            fileOutputStream fOutStream = new fileOutputStream(tmpfile);            // Creating a bitmap from the downloaded inputstream            Bitmap b = BitmapFactory.decodeStream(iStream);                         // Writing the bitmap to the temporary file as png file            b.compress(Bitmap.CompressFormat.PNG,100, fOutStream);                          // Flush the fileOutputStream            fOutStream.flush();            //Close the fileOutputStream            fOutStream.close();                         // Create a hashmap object to store image path and its position in the ListvIEw            HashMap<String, Object> hmBitmap = new HashMap<String, Object>();            // Storing the path to the temporary image file            hmBitmap.put("flag",tmpfile.getPath());            // Storing the position of the image in the ListvIEw            hmBitmap.put("position",position);                          // Returning the HashMap object containing the image path and position            return hmBitmap;                        }catch (Exception e) {                          e.printstacktrace();        }        return null;    }    @OverrIDe    protected voID onPostExecute(HashMap<String, Object> result) {        // Getting the path to the downloaded image        String path = (String) result.get("flag");                  // Getting the position of the downloaded image        int position = (Integer) result.get("position");        // Getting adapter of the ListvIEw        SimpleAdapter adapter = (SimpleAdapter ) mListVIEw.getAdapter();        // Getting the hashmap object at the specifIEd position of the ListvIEw        HashMap<String, Object> hm = (HashMap<String, Object>)   adapter.getItem(position);         // Overwriting the existing path in the adapter         hm.put("flag",path);        // Noticing ListvIEw about the dataset changes        adapter.notifyDataSetChanged();     }}    @OverrIDe   public boolean onCreateOptionsMenu(Menu menu) {    getMenuInflater().inflate(R.menu.activity_main, menu);    return true;  }  }

如何做呢 ？

解决方法:

首先请看一些教程,如：

http://www.androidhive.info/2012/01/android-json-parsing-tutorial/

http://www.vogella.com/articles/AndroidJSON/article.html

JsONObject response = new JsONObject(respString);ArrayList<Book> bookCollection = new ArrayList<Book>();//    if(response.has("results")){        if(response.has("result")){            JsONArray resultArray = response.getJsONArray("result");            for(int iCount=0; iCount<resultArray.length; iCount++){                JsONObject item = resultArray.getJsONObject(iCount);                Book book = new Book();                if(item.has("Title")){                    book.Title =item.getString("Title");                }                bookCollection.add(book);            }        }    }

填充的pojo

public Book{public String cover;public String Title;}

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