編輯:關於Android編程
導包:com.loopj.android android-async-http1.4.5
import com.loopj.android.http.*;創建一個AsyncHttpClient 對象並發送一個請求:
client.get(http://www.google.com, new AsyncHttpResponseHandler() { @Override public void onStart() { // called before request is started } @Override public void onSuccess(int statusCode, Header[] headers, byte[] response) { // called when response HTTP status is 200 OK } @Override public void onFailure(int statusCode, Header[] headers, byte[] errorResponse, Throwable e) { // called when response HTTP status is 4XX (eg. 401, 403, 404) } @Override public void onRetry(int retryNo) { // called when request is retried } });
import com.loopj.android.http.*; public class TwitterRestClient { private static final String BASE_URL = http://api.twitter.com/1/; private static AsyncHttpClient client = new AsyncHttpClient(); public static void get(String url, RequestParams params, AsyncHttpResponseHandler responseHandler) { client.get(getAbsoluteUrl(url), params, responseHandler); } public static void post(String url, RequestParams params, AsyncHttpResponseHandler responseHandler) { client.post(getAbsoluteUrl(url), params, responseHandler); } private static String getAbsoluteUrl(String relativeUrl) { return BASE_URL + relativeUrl; } }
import org.json.*; import com.loopj.android.http.*; class TwitterRestClientUsage { public void getPublicTimeline() throws JSONException { TwitterRestClient.get(statuses/public_timeline.json, null, new JsonHttpResponseHandler() { @Override public void onSuccess(int statusCode, Header[] headers, JSONObject response) { // If the response is JSONObject instead of expected JSONArray } @Override public void onSuccess(int statusCode, Header[] headers, JSONArray timeline) { // Pull out the first event on the public timeline JSONObject firstEvent = timeline.get(0); String tweetText = firstEvent.getString(text); // Do something with the response System.out.println(tweetText); } }); } }
PersistentCookieStore
,這個類是Apache HttpClient CookieStore 接口的實現,它可以自動將cookies保存到SharedPreferences 。 如果你需要使用cookie保持認證會話,這將是特別重要的,因為即使用戶關掉了應用仍然可以登錄狀態。 首先,創建一個AsyncHttpClient對象:
AsyncHttpClient myClient = new AsyncHttpClient();
PersistentCookieStore myCookieStore = new PersistentCookieStore(this); myClient.setCookieStore(myCookieStore);
BasicClientCookie newCookie = new BasicClientCookie(cookiesare, awesome); newCookie.setVersion(1); newCookie.setDomain(mydomain.com); newCookie.setPath(/); myCookieStore.addCookie(newCookie);
RequestParams params = new RequestParams(); params.put(key, value); params.put(more, data);2.創建一個帶有一對參數的RequestParams
RequestParams params = new RequestParams(single, value);3.創建一個帶有Map的RequestParams
HashMap詳情請參考:RequestParams JavadocparamMap = new HashMap (); paramMap.put(key, value); RequestParams params = new RequestParams(paramMap);
InputStream myInputStream = blah; RequestParams params = new RequestParams(); params.put(secret_passwords, myInputStream, passwords.txt);2.File方式
File myFile = new File(/path/to/file.png); RequestParams params = new RequestParams(); try { params.put(profile_picture, myFile); } catch(FileNotFoundException e) {}3.byte數組形式
byte[] myByteArray = blah; RequestParams params = new RequestParams(); params.put(soundtrack, new ByteArrayInputStream(myByteArray), she-wolf.mp3);
AsyncHttpClient client = new AsyncHttpClient(); client.get(http://example.com/file.png, new FileAsyncHttpResponseHandler() { @Override public void onSuccess(int statusCode, Header[] headers, File response) { // Do something with the file `response` } });
AsyncHttpClient client = new AsyncHttpClient(); client.setBasicAuth(username,password/token); client.get(http://example.com);
AsyncHttpClient client = new AsyncHttpClient(); client.setBasicAuth(username,password, new AuthScope(example.com, 80, AuthScope.ANY_REALM)); client.get(http://example.com);
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