【发布时间】：2014-10-21 07:27:28
【问题描述】：
我使用https://github.com/loopj/android-async-http，但我认为这可以应用于异步任务（本机任务）
AsyncHttpClient client = new AsyncHttpClient();
client.get("http://www.google.com", new AsyncHttpResponseHandler() {
@Override
public void onStart() {
// called before request is started
//Some debugging code here
}
@Override
public void onSuccess(int statusCode, Header[] headers, byte[] response) {
// called when response HTTP status is "200 OK"
//here is the interesting part
}
@Override
public void onFailure(int statusCode, Header[] headers, byte[] errorResponse, Throwable e) {
// called when response HTTP status is "4XX" (eg. 401, 403, 404)
//Some debugging code here, show retry dialog, feedback etc.
}
@Override
public void onRetry(int retryNo) {
//Some debugging code here-------
}
});
我在很多单独的课程中经常使用它。 onStart、onFailure 和 onRetry 到处都是一样的，只是复制粘贴，只是 onSuccess 不一样。
我想保持我的代码尽可能干净并重用我已经编写的内容，所以我的问题是，我如何在单独的“文件”中进行自定义，然后重用它。我只需要“OnSuccess”功能。谢谢
--------------------------------------
GET & POST 的解决方案（感谢 furkan3ayraktar）
第一个文件请求监听器
package com.classicharmony.krakenmessages.utils.AsyncHttp;
import org.apache.http.Header;
public interface RequestListener {
public void onSuccess(int statusCode, Header[] headers, byte[] response);
}
第二个文件请求处理程序
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.util.Log;
import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.AsyncHttpResponseHandler;
import org.apache.http.Header;
import org.apache.http.entity.StringEntity;
import java.io.UnsupportedEncodingException;
public class RequestHandler {
private static RequestHandler instance;
private AsyncHttpClient client;
private static final boolean SHOW_DEBUG_ALERT_DIALOG = true;
private RequestHandler() {
client = new AsyncHttpClient();
}
public static RequestHandler getInstance() {
if (instance == null) {
instance = new RequestHandler();
}
return instance;
}
public void make_get_Request(final Context context, final String url, final RequestListener listener) {
client.get(url, new AsyncHttpResponseHandler() {
@Override
public void onStart() {
Log.v("▒▒▒▒▒▒▒ GET ", url);
}
@Override
public void onSuccess(int statusCode, Header[] headers, byte[] response) {
listener.onSuccess(statusCode, headers, response);
}
@Override
public void onFailure(int statusCode, Header[] headers, byte[] errorResponse, Throwable e) {
Log.e("▒▒▒▒▒▒▒ GET FAILED ", url);
Log.e("▒▒▒▒▒▒▒ GET FAILED ", e.getLocalizedMessage());
if (DUtils.isDebuggable(context) && SHOW_DEBUG_ALERT_DIALOG) {
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("▒▒▒▒▒ ERROR ▒▒▒▒▒");
String error_msg;
if (errorResponse != null) {
try {
error_msg = String.valueOf(new String(errorResponse, "UTF-8"));
} catch (UnsupportedEncodingException e1) {
error_msg = e.getLocalizedMessage();
}
} else {
error_msg = e.getLocalizedMessage();
}
builder.setMessage(context.getClass().getSimpleName() + " -> " + error_msg)
.setCancelable(true)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.dismiss();
}
});
AlertDialog alert = builder.create();
alert.show();
}
}
@Override
public void onRetry(int retryNo) {
Log.e("▒▒▒▒▒▒▒ RETRYING ", "....." + String.valueOf(retryNo));
}
});
}
public void make_post_Request(final Context context, final StringEntity entity, final String url, final RequestListener listener) {
client.post(context, url, entity, "application/json", new AsyncHttpResponseHandler() {
@Override
public void onStart() {
Log.v("▒▒▒▒▒▒▒ POST ", url);
}
@Override
public void onSuccess(int statusCode, Header[] headers, byte[] response) {
listener.onSuccess(statusCode, headers, response);
}
@Override
public void onFailure(int statusCode, Header[] headers, byte[] errorResponse, Throwable e) {
Log.e("▒▒▒▒▒▒▒ POST FAILED ", url);
Log.e("▒▒▒▒▒▒▒ POST FAILED ", context.getClass().getSimpleName() + " -> " + e.getLocalizedMessage());
if (DUtils.isDebuggable(context) && SHOW_DEBUG_ALERT_DIALOG) {
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("▒▒▒▒▒ ERROR ▒▒▒▒▒");
String error_msg;
if (errorResponse != null) {
try {
error_msg = String.valueOf(new String(errorResponse, "UTF-8"));
} catch (UnsupportedEncodingException e1) {
error_msg = e.getLocalizedMessage();
}
} else {
error_msg = e.getLocalizedMessage();
}
builder.setMessage(context.getClass().getSimpleName() + " -> " + error_msg)
.setCancelable(true)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.dismiss();
}
});
AlertDialog alert = builder.create();
alert.show();
}
}
@Override
public void onRetry(int retryNo) {
Log.e("▒▒▒▒▒▒▒ RETRYING ", "....." + String.valueOf(retryNo));
}
});
}
}
第三个“实用程序”是否显示对话框。
public static boolean isDebuggable(Context ctx) {
boolean debuggable = false;
X500Principal DEBUG_DN = new X500Principal("CN=Android Debug,O=Android,C=US");
try {
PackageInfo pinfo = ctx.getPackageManager().getPackageInfo(ctx.getPackageName(), PackageManager.GET_SIGNATURES);
Signature signatures[] = pinfo.signatures;
CertificateFactory cf = CertificateFactory.getInstance("X.509");
for (int i = 0; i < signatures.length; i++) {
ByteArrayInputStream stream = new ByteArrayInputStream(signatures[i].toByteArray());
X509Certificate cert = (X509Certificate) cf.generateCertificate(stream);
debuggable = cert.getSubjectX500Principal().equals(DEBUG_DN);
if (debuggable)
break;
}
} catch (PackageManager.NameNotFoundException e) {
//debuggable variable will remain false
} catch (CertificateException e) {
//debuggable variable will remain false
}
return debuggable;
}
示例如何为 POST 调用它：
JSONObject jsonParams = new JSONObject();
StringEntity entity;
try {
jsonParams.put("from_user_id", "dan");
jsonParams.put("to_user_id", "vili");
jsonParams.put("message", "hello world");
entity = new StringEntity(jsonParams.toString());
} catch (JSONException e) {
e.printStackTrace();
return;
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
return;
}
RequestHandler handler = RequestHandler.getInstance();
handler.make_post_Request(getActivity(), entity, "http://your_server/api/etc", new RequestListener() {
@Override
public void onSuccess(int statusCode, Header[] headers, byte[] response) {
try {
String server_response = String.valueOf(new String(response, "UTF-8"));
Log.v("Server response",server_response);
} catch (UnsupportedEncodingException e1) {
}
}
});
【问题讨论】：
-
非常感谢......它就像一个魅力......非常感谢......顺便说一句，它是在 2014 年编辑的......这一定是老式的。请告诉我您现在是否正在使用其他任何东西或相同的东西。再次感谢。
-
好吧..有更新的方法...更容易....但如果它有效，然后使用它。在几个手机和版本上测试它，如果它完成了工作，就这样吧。
-
AYE.. 只是想知道.. 到目前为止我发现的最简单的方法。
标签： java android android-asynctask