实例介绍
【实例简介】
【实例截图】
【核心代码】
package com.allen.http.framework; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.List; import java.util.Map; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.HttpStatus; import org.apache.http.NameValuePair; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPost; import org.apache.http.message.BasicNameValuePair; import org.apache.http.util.EntityUtils; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import android.app.Activity; import android.content.Context; import android.os.AsyncTask; import android.util.Log; /** * start http request from this,it extends AsyncTask * * */ public class HttpAsyncTaskManager implements Request { private Context context; private static final String TAG = HttpAsyncTaskManager.class .getSimpleName(); public HttpAsyncTaskManager(Context context) { this.context = context; } /** * get request * * @param url * @param handler * see the abstract class {@link TaskHandler},you can use the * subclass eg. {@link StringTaskHandler} and so on} */ public void request(String url, TaskHandler handler) { if (context != null) { synchronized (this) { new HttpTask(context, url, 0, null, handler).execute(""); } } } /** * post request * * @param url * @param params * url parameters,if not use null * @param handler * see the abstract class {@link TaskHandler},you can use the * subclass eg. {@link StringTaskHandler} and so on} */ public void request(String url, Map<String, String> params, TaskHandler handler) { if (context != null) { synchronized (this) { new HttpTask(context, url, 1, params, handler).execute(""); } } } /** task */ private static class HttpTask extends AsyncTask<String, Integer, InputStream> { Context context; String url; /** 0 is get,1 is post */ int type = 0; TaskHandler handler; Map<String, String> params; public HttpTask(Context context, String url, int type, Map<String, String> params, TaskHandler handler) { this.context = context; this.url = url; this.type = type; this.handler = handler; this.params = params; } @Override protected void onPreExecute() { if (!IOUtils.networkIsAvailable(context)) {// network is break handler.onNetError(); } } @Override protected InputStream doInBackground(String... param) { // TODO Auto-generated method stub InputStream in = null; if (IOUtils.networkIsAvailable(context)) {// network is well if (type == 0) {// get HttpEntity entity = null; HttpGet get = new HttpGet(url); try { HttpResponse res = HttpFactory.execute(context, get); final int statusCode = res.getStatusLine() .getStatusCode(); entity = res.getEntity(); if (statusCode == HttpStatus.SC_OK && entity != null) { in = entity.getContent(); return in; } else { get.abort(); } } catch (Exception e) { get.abort(); Log.e(TAG, "____get___" e.toString() "_____"); } } else {// post final HttpPost post = new HttpPost(url); HttpEntity entity = null; try { //add the url parameters List<NameValuePair> pair = new ArrayList<NameValuePair>(); if (params != null && !params.isEmpty()) { for (Map.Entry<String, String> entry : params .entrySet()) { pair.add(new BasicNameValuePair(entry.getKey(), entry.getValue())); } } post.setEntity(new UrlEncodedFormEntity(pair, "UTF-8")); final HttpResponse response = HttpFactory.execute( context, post); final int statusCode = response.getStatusLine() .getStatusCode(); if (statusCode == HttpStatus.SC_OK) { entity = response.getEntity(); if (entity != null) { in = entity.getContent(); return in; } } else { post.abort(); } } catch (Exception e) { post.abort(); Log.e(TAG, "____post___" e.toString() "_____"); } } } return in; } protected void onPostExecute(InputStream result) { if (result == null) { handler.onFail(); } else { handler.onSuccess(handler.parseResult(result)); } IOUtils.closeStream(result); } } }
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