【好东西】android 手机集成支付宝 开发分享

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public class PartnerConfig {      //合作商户ID。用签约支付宝账号登录ms.alipay.com后，在账户信息页面获取。      public static final String PARTNER = "xxx" ;      //账户ID。用签约支付宝账号登录ms.alipay.com后，在账户信息页面获取。      public static final String SELLER = "xxx" ;      //商户（RSA）私钥 ,即rsa_private_key.pem中去掉首行，最后一行，空格和换行最后拼成一行的字符串      public static final String RSA_PRIVATE = "xxx" ;      //支付宝（RSA）公钥  用签约支付宝账号登录ms.alipay.com后，在密钥管理页面获取。      public static final String RSA_ALIPAY_PUBLIC = "xxx" ;      //下面的配置告诉应用去assets目录下找安装包      public static final String ALIPAY_PLUGIN_NAME = "alipay_plugin223_0309.apk" ; }

AlixDemo中代码是最终的调用代码在onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {}中，下面我们提取其中的核心代码。

6.提取核心调用代码
在AlixDemo.java同目录下新建AlixPay.java,来提取AlixDemo.java的核心代码：

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package com.tianxia.lib.baseworld.alipay; import java.net.URLEncoder; import java.text.SimpleDateFormat; import java.util.Date; import com.tianxia.lib.baseworld.R; import android.app.Activity; import android.app.ProgressDialog; import android.content.DialogInterface; import android.os.Handler; import android.os.Message; import android.view.KeyEvent; import android.widget.Toast; public class AlixPay {      static String TAG = "AlixPay" ;      private Activity mActivity;      public AlixPay(Activity activity) {          mActivity = activity;      }      private ProgressDialog mProgress = null ;      // the handler use to receive the pay result.      private Handler mHandler = new Handler() {          public void handleMessage(Message msg) {              try {                  String strRet = (String) msg.obj;                  switch (msg.what) {                  case AlixId.RQF_PAY: {                      closeProgress();                      BaseHelper.log(TAG, strRet);                      try {                          String memo = "memo=" ;                          int imemoStart = strRet.indexOf( "memo=" );                          imemoStart += memo.length();                          int imemoEnd = strRet.indexOf( ";result=" );                          memo = strRet.substring(imemoStart, imemoEnd);                          ResultChecker resultChecker = new ResultChecker(strRet);                          int retVal = resultChecker.checkSign();                          if (retVal == ResultChecker.RESULT_CHECK_SIGN_FAILED) {                              BaseHelper.showDialog(                                      mActivity,                                      "提示" ,                                      mActivity.getResources().getString(                                              R.string.check_sign_failed),                                      android.R.drawable.ic_dialog_alert);                          } else {                              BaseHelper.showDialog(mActivity, "提示" , memo,                                      R.drawable.infoicon);                          }                                                } catch (Exception e) {                          e.printStackTrace();                          BaseHelper.showDialog(mActivity, "提示" , strRet,                                  R.drawable.infoicon);                      }                  }                      break ;                  }                  super .handleMessage(msg);              } catch (Exception e) {                  e.printStackTrace();              }          }      };      // close the progress bar      void closeProgress() {          try {              if (mProgress != null ) {                  mProgress.dismiss();                  mProgress = null ;              }          } catch (Exception e) {              e.printStackTrace();          }      }      public void pay() {          MobileSecurePayHelper mspHelper = new MobileSecurePayHelper(mActivity);          boolean isMobile_spExist = mspHelper.detectMobile_sp();          if (!isMobile_spExist)              return ;          if (!checkInfo()) {              BaseHelper.showDialog(mActivity, "提示" ,                      "缺少partner或者seller，" , R.drawable.infoicon);              return ;          }          try {              // prepare the order info.              String orderInfo = getOrderInfo();              String signType = getSignType();              String strsign = sign(signType, orderInfo);              strsign = URLEncoder.encode(strsign);              String info = orderInfo + "&sign=" + "\"" + strsign + "\"" + "&"                      + getSignType();                            // start the pay.              MobileSecurePayer msp = new MobileSecurePayer();              boolean bRet = msp.pay(info, mHandler, AlixId.RQF_PAY, mActivity);                            if (bRet) {                  // show the progress bar to indicate that we have started paying.                  closeProgress();                  mProgress = BaseHelper.showProgress(mActivity, null , "正在支付" , false ,                          true );              } else                  ;          } catch (Exception ex) {              Toast.makeText(mActivity, R.string.remote_call_failed,                      Toast.LENGTH_SHORT).show();          }                }      private boolean checkInfo() {          String partner = PartnerConfig.PARTNER;          String seller = PartnerConfig.SELLER;          if (partner == null || partner.length() <= 0 || seller == null                  || seller.length() <= 0 )              return false ;          return true ;      }      // get the selected order info for pay.      String getOrderInfo() {          String strOrderInfo = "partner=" + "\"" + PartnerConfig.PARTNER + "\"" ;          strOrderInfo += "&" ;          strOrderInfo += "seller=" + "\"" + PartnerConfig.SELLER + "\"" ;          strOrderInfo += "&" ;          strOrderInfo += "out_trade_no=" + "\"" + getOutTradeNo() + "\"" ;          strOrderInfo += "&" ;          //这笔交易价钱          strOrderInfo += "subject=" + "\"" + mActivity.getString(R.string.donate_subject) + "\"" ;          strOrderInfo += "&" ;          //这笔交易内容          strOrderInfo += "body=" + "\"" + mActivity.getString(R.string.donate_body) + "\"" ;          strOrderInfo += "&" ;          //这笔交易价钱          strOrderInfo += "total_fee=" + "\"" + "10.00" + "\"" ;          strOrderInfo += "&" ;          strOrderInfo += "notify_url=" + "\""                  + "http://notify.java.jpxx.org/index.jsp" + "\"" ;          return strOrderInfo;      }      // get the out_trade_no for an order.      String getOutTradeNo() {          SimpleDateFormat format = new SimpleDateFormat( "MMddHHmmss" );          Date date = new Date();          String strKey = format.format(date);          java.util.Random r = new java.util.Random();          strKey = strKey + r.nextInt();          strKey = strKey.substring( 0 , 15 );          return strKey;      }      // get the sign type we use.      String getSignType() {          String getSignType = "sign_type=" + "\"" + "RSA" + "\"" ;          return getSignType;      }      // sign the order info.      String sign(String signType, String content) {          return Rsa.sign(content, PartnerConfig.RSA_PRIVATE);      }      // the OnCancelListener for lephone platform.      static class AlixOnCancelListener implements              DialogInterface.OnCancelListener {          Activity mcontext;          AlixOnCancelListener(Activity context) {              mcontext = context;          }          public void onCancel(DialogInterface dialog) {              mcontext.onKeyDown(KeyEvent.KEYCODE_BACK, null );          }      } }

这个类的pay方法就是支付的方法，最简单的不设置的话，调用方法如下：

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1 2	AlixPay alixPay = new AlixPay(SettingTabActivity. this ); alixPay.pay();

如果没有安装支付宝，它会提示你安装，如果已经安装，它直接让你选择付款：

这说明已经配置成功了。
然后可以删掉那些示例java文件了： AlixDemo.java,ProductListAdapter.java,Products.java。 
你也可以通过调整参数来修改订单信息，如主题，价格等。
另外在BaseHelper的94行：

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1	dialog.setOnCancelListener( new AlixDemo.AlixOnCancelListener( (Activity)context ) );

需要修改为：

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1	dialog.setOnCancelListener( new AlixPay.AlixOnCancelListener( (Activity)context ) );

7.注意
我在测试的时候，调用的activity是框在一个ActivityGroup里的（与tabhost类似，据说tabhost也有这个问题），导致MobileSecurePayer.java的pay方法中调用服务的两行代码：

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mActivity.bindService( new Intent(IAlixPay. class .getName()), mAlixPayConnection, Context.BIND_AUTO_CREATE); mActivity.unbindService(mAlixPayConnection);

需要修改为：

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1 2	mActivity.getApplicationContext().bindService( new Intent(IAlixPay. class .getName()), mAlixPayConnection, Context.BIND_AUTO_CREATE); mActivity.getApplicationContext().unbindService(mAlixPayConnection);

不然会报错java.lang.ClassCastException: android.os.BinderProxy cannot be cast to com.android.server.am.ActivityRecord$Token...

8.小结
支付宝的集成比我想象的要复杂一些，比较麻烦，首先需要审核，然后代码需要提取，所以写出来与大家分享。 
在做集成配置的时候，一定要仔细认真，一个地方出错，可能要导致后面查错查很长时间。
因为本人是先集成成功后才写的这篇文章，难免会漏掉一些重要的细节或者步骤，如有不对，请留言指正。 

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