Android异常 java.lang.IllegalStateException解决方法

android异常详情介绍

这种异常我遇到以下两种情况：
1. java.lang.illegalstateexception: no wrapped connection.
2.java.lang.illegalstateexception: adapter is detached.

原因：

1.单线程一次执行一个请求可以正常执行，如果使用多线程，同时执行多个请求时就会出现连接超时.
2.httpconnection没有连接池的概念，多少次请求就会建立多少个io，在访问量巨大的情况下服务器的io可能会耗尽。
3.通常是因为httpclient访问单一实例的不同的线程或未关闭inputstream的httpresponse。

解决方案：获得httpclient线程安全

解决前代码：

public httpclient httpclient = new defaulthttpclient();
 public void postnoresult(final context context, final string url, final map<string, string> maps, final string show) {
  new thread() {
   @override
   public void run() {
    try {
     httppost post = new httppost(url);
     list<namevaluepair> params = new arraylist<namevaluepair>();
     for (string key : maps.keyset()) {
      params.add(new basicnamevaluepair(key, maps.get(key)));
     }
     post.setentity(new urlencodedformentity(params, http.utf_8));
     httpresponse response = httpclient.execute(post);//报错位置
     if (response.getstatusline().getstatuscode() == 200) {
      looper.prepare();
      string r = entityutils.tostring(response.getentity());
      toastutil.print_log(r);
      if (show != null) {
       toastutil.show(context, show);
      }
      looper.loop();}
    } catch (unsupportedencodingexception e) {
     e.printstacktrace();
    } catch (clientprotocolexception e) {
     e.printstacktrace();
    } catch (ioexception e) {
     e.printstacktrace();
    }}}.start();
 }

解决后代码：

public httpclient httpclient = getthreadsafeclient();//获得httpclient线程安全。
public static defaulthttpclient getthreadsafeclient() {
//获得httpclient线程安全的方法
  defaulthttpclient client = new defaulthttpclient();
  clientconnectionmanager mgr = client.getconnectionmanager();
  httpparams params = client.getparams();
  client = new defaulthttpclient(new threadsafeclientconnmanager(params,
    mgr.getschemeregistry()), params);
  return client;
 }

  public void postnoresult(final context context, final string url, final map<string, string> maps, final string show) {
  new thread() {
   @override
   public void run() {
    try {
     httppost post = new httppost(url);
     list<namevaluepair> params = new arraylist<namevaluepair>();
     for (string key : maps.keyset()) {
      params.add(new basicnamevaluepair(key, maps.get(key)));
     }
     post.setentity(new urlencodedformentity(params, http.utf_8));
     httpresponse response = httpclient.execute(post);//报错位置
     if (response.getstatusline().getstatuscode() == 200) {
      looper.prepare();
      string r = entityutils.tostring(response.getentity());
      toastutil.print_log(r);
      if (show != null) {
       toastutil.show(context, show);
      }
      looper.loop();}
    } catch (unsupportedencodingexception e) {
     e.printstacktrace();
    } catch (clientprotocolexception e) {
     e.printstacktrace();
    } catch (ioexception e) {
     e.printstacktrace();
    }}}.start();
 }

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