要求是：我有一個(gè)后臺(tái)服務(wù),在該服務(wù)中,我正在執(zhí)行REST調(diào)用以獲取JSON數(shù)據(jù).我想將JSON數(shù)據(jù)發(fā)送到UI并更新內(nèi)容.

我可以使用的一種方法是,將整個(gè)JSON字符串存儲(chǔ)在SharedPreferences中,然后在UI中進(jìn)行檢索,但我認(rèn)為這樣做并不高效.

有想法嗎？我在UI中添加了一個(gè)Handler來更新元素,但是我對(duì)使用它并不熟悉.

樣本REST調(diào)用代碼：

DefaultHttpClient httpClient = new DefaultHttpClient();

HttpPost httpPost = new HttpPost(DATA_URL);

httpPost.setHeader("Content-Type", "application/json");

//passes the results to a string builder/entity

StringEntity se = null;

try {

se = new StringEntity(RequestJSON.toString());

} catch (UnsupportedEncodingException e) {

e.printStackTrace();

}

//sets the post request as the resulting string

httpPost.setEntity(se);

//Handles what is returned from the page

ResponseHandler responseHandler = new BasicResponseHandler();

try {

HttpResponse response = (HttpResponse) httpClient.execute(httpPost, responseHandler);

// response will have JSON data that I need to update in UI

//Show notification

showNotification("Update Complete");

} catch (UnsupportedEncodingException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (ClientProtocolException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} finally {

// httpClient = null;

}

總結(jié)

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