Android第三方微信支付教程

<uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/><uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/><uses-permission android:name="android.permission.READ_PHONE_STATE"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <!-- 启动主页面 -->    <activity      android:name=".ui.activity.MainActivity"      android:label="@string/app_name" >      <intent-filter>        <action android:name="android.intent.action.MAIN" />        <category android:name="android.intent.category.LAUNCHER" />      </intent-filter>      <intent-filter>        <action android:name="android.intent.action.VIEW" />        <category android:name="android.intent.category.DEFAULT" />        <data android:scheme="wx487898a262d23df3" />      </intent-filter>    </activity>    <activity      android:name=".wxapi.WXPayEntryActivity"      android:exported="true"      android:label="@string/title_activity_wxpayentry"      android:launchMode="singleTop" />    <receiver      android:name=".wxpay.AppRegister"      android:permission="com.tencent.mm.plugin.permission.SEND" >      <intent-filter>        <action android:name="com.tencent.mm.plugin.openapi.Intent.ACTION_REFRESH_WXAPP" />      </intent-filter>    </receiver>  /**   * 首先调用接口，要把一些基本信息作为参数传给服务器   * 比如：金额fee，用户id,标题title等   * 调用成功之后会返回微信所需要的参数，如：   * appid，noncestr，package，partnerid，prepayid，   * timestamp，sign   * 微信支付   */  StringBuffer sb = new StringBuffer();  WeixinPay wpay;  private AlertDialog mDialog;  private AlertDialog.Builder builder;  public void weixinPay() {    // 通过WXAPIFactory工厂，获取IWXAPI的实例    api = WXAPIFactory.createWXAPI(this, Constants.APP_ID);    // 将该app注册到微信    api.registerApp(Constants.APP_ID);    // 调用接口    Params p = new Params();    p.put("fee",fee);    p.put("spbill_create_ip", NetWorkUtils.getLocalIpAddress(this));    String value = "商品标题 " + title;    try {      String title = new String(value.getBytes("UTF-8"));      p.put("body", title);    } catch (UnsupportedEncodingException e) {      e.printStackTrace();    }    p.put("userId", O.getUser().getId());    p.post(C.URL.WEIXIN_PAY, new ReHandler() {      @Override      public void onSuccess(NetEntity entity) {        wpay = entity.toObj(WeixinPay.class);        PayReq req = new PayReq();        req.appId = wpay.getAppid();// 微信appId        req.packageValue = wpay.getPackageValue();// 包        req.extData = "app data"; // optional        req.timeStamp = wpay.getTimeStamp();// 时间戳        req.partnerId = wpay.getPartnerId();// 商户号"        req.prepayId = wpay.getPrepayId();// 预支付订单号        req.nonceStr = wpay.getNonceStr();// 随机字符串        req.sign = wpay.getSign();// 后台返回的签名        // 本地再次签名        List<NameValuePair> signParams = new LinkedList<NameValuePair>();        signParams.add(new BasicNameValuePair("appid", req.appId));        signParams.add(new BasicNameValuePair("noncestr", req.nonceStr));        signParams.add(new BasicNameValuePair("package",req.packageValue));        signParams.add(new BasicNameValuePair("partnerid",req.partnerId));        signParams.add(new BasicNameValuePair("prepayid", req.prepayId));        signParams.add(new BasicNameValuePair("timestamp",req.timeStamp));        req.sign = genAppSign(signParams);        // 调微信支付        if(api.isWXAppInstalled()&&api.isWXAppSupportAPI()){          api.sendReq(req);        }else{          builder = new AlertDialog.Builder(WXPayEntryActivity.this);          builder.setNeutralButton("关闭",              new DialogInterface.OnClickListener() {                @Override                public void onClick(DialogInterface dialog, int which) {                  mDialog.dismiss();                }              }).setTitle("友情提醒").setMessage("请安装微信客户端");          mDialog = builder.create();          mDialog.show();        }      }      @Override      public void onStart() {      }      @Override      public void onFailure(String message) {      }    });  }  private String genAppSign(List<NameValuePair> params) {    StringBuilder sb = new StringBuilder();    for (int i = 0; i < params.size(); i++) {      sb.append(params.get(i).getName());      sb.append('=');      sb.append(params.get(i).getValue());      sb.append('&');    }    sb.append("key=");    sb.append(Constants.API_KEY);    this.sb.append("sign str/n" + sb.toString() + "/n/n");    String appSign = MD5.getMessageDigest(sb.toString().getBytes());    Log.e("orion", appSign);    return appSign;  }

@Override  public void onResp(BaseResp resp) {    Log.d(TAG, "onPayFinish, errCode = " + resp.errCode);    if (resp.getType() == ConstantsAPI.COMMAND_PAY_BY_WX) {      if(resp.errCode==-2){        Toast.makeText(this,"取消付款！", Toast.LENGTH_LONG).show();      }      if(resp.errCode==-1){        Toast.makeText(this,"支付错误！", Toast.LENGTH_LONG).show();      }      if(resp.errCode==0){        queryOrder();//查询接口调用后台服务器查询是否成功      }    }