Android之使用Android-query框架开发实战（二）

String url = "http://www.google.com/uds/GnewsSearch?q=Obama&v=1.0";    aq.ajax(url, JSONObject.class, new AjaxCallback<JSONObject>() {    @Override    public void callback(String url, JSONObject json, AjaxStatus status) {            if(json != null){        //successful ajax call, show status code and json content        Toast.makeText(aq.getContext(), status.getCode() + ":" + json.toString(), Toast.LENGTH_LONG).show();            }else{        //ajax error, show error code        Toast.makeText(aq.getContext(), "Error:" + status.getCode(), Toast.LENGTH_LONG).show();      }    } }); 

public void asyncJson(){    //perform a Google search in just a few lines of code    String url = "http://www.google.com/uds/GnewsSearch?q=Obama&v=1.0";      aq.ajax(url, JSONObject.class, this, "jsonCallback");  }public void jsonCallback(String url, JSONObject json, AjaxStatus status){    if(json != null){        //successful ajax call     }else{       //ajax error  }} 

public void xml_ajax(){     String url = "https://picasaweb.google.com/data/feed/base/featured?max-results=8";      aq.ajax(url, XmlDom.class, this, "picasaCb");   }

public void picasaCb(String url, XmlDom xml, AjaxStatus status){ // 返回一系列为entry的结点,并把其add进list  List<XmlDom> entries = xml.tags("entry");      List<String> titles = new ArrayList<String>();    String imageUrl = null;    for(XmlDom entry: entries){    titles.add(entry.text("title")); //循环把第一个结点为title的文本放进title    imageUrl = entry.tag("content", "type", "image/jpeg").attr("src");//把第一个结点为content,属性为type,属性值为image/jpeg的src属性值赋予给imageUri  }      aq.id(R.id.image).image(imageUrl);}   

String url = "https://picasaweb.google.com/data/feed/base/featured?max-results=16";    File ext = Environment.getExternalStorageDirectory();File target = new File(ext, "aquery/myfolder/photos.xml");    aq.progress(R.id.progress).download(url, target, new AjaxCallback<File>(){    public void callback(String url, File file, AjaxStatus status) {        if(file != null){      showResult("File:" + file.length() + ":" + file, status);    }else{      showResult("Failed", status);    }  } });

private void aync_multipart(){    String url = "https://graph.facebook.com/me/photos";    Map<String, Object> params = new HashMap<String, Object>();  params.put("message", "Message");    //Simply put a byte[] to the params, AQuery will detect it and treat it as a multi-part post  byte[] data = getImageData();  params.put("source", data);    //Alternatively, put a File or InputStream instead of byte[]  //File file = getImageFile();     //params.put("source", file);    AQuery aq = new AQuery(getApplicationContext());  aq.auth(handle).ajax(url, params, JSONObject.class, this, "photoCb");  }

String url = "http://www.google.com";// 返回最近15分钟内的缓存副本,如果expire为-1,内容将会立即更新且缓存long expire = 15 * 60 * 1000;aq.ajax(url, String.class, expire, new AjaxCallback<String>() { @Override public void callback(String url, String html, AjaxStatus status) {    showResult(html); }  });

public void callback(String url, JSONObject json, AjaxStatus status) {   if(json != null){    if("1".equals(json.optString("status"))){      //do something    }else{      // 不缓存      status.invalidate();    }  }}

String url = "http://www.google.com/uds/GnewsSearch?q=Obama&v=1.0";  AjaxCallback<JSONObject> cb = new AjaxCallback<JSONObject>();   cb.url(url).type(JSONObject.class);   aq.sync(cb);JSONObject jo = cb.getResult();AjaxStatus status = cb.getStatus();