public class ParameterConfig {public static final String  GANHOST = "http://101.226.197.11"; //服务器地址ip（根据自己替换）/*** 微信*/<span style="white-space:pre">   </span> //appidpublic static final String WX_APP_ID = "";// 自己填写自己项目的// 商户号public static final String WX_MCH_ID = "";// 自己填写自己项目的// API密钥，在商户平台设置public static final String WX_API_KEY = "";// 自己填写自己项目的//服务器回调接口public static final String WX_notifyUrl = GANHOST+"/service/orderComplete";// 用于微信支付成功的回调（按自己需求填写）/*** 支付宝*/// 商户PIDpublic static final String PARTNER = "";//自己填写自己项目的// 商户收款账号public static final String SELLER = "";//自己填写自己项目的// 商户私钥，pkcs8格式public static final String RSA_PRIVATE = "";//自己填写自己项目的public static final String aliPay_notifyURL = GANHOST+"/service/alipay/orderComplete";//支付宝支付成功的回调}

1.微信支付的集成前提条件

 a.用户权限

 <uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

b.activity配置这里必须要这么配置

@ContentView(R.layout.activity_main)
public class MainActivity extends Activity {private Goods goods;private String username;private String mobile;private String adress;private int count;@ViewInject(R.id.product_ordsubmit_username)private TextView usernameTV;@ViewInject(R.id.product_ordsubmit_phone)private TextView phoneTV;@ViewInject(R.id.product_ordsubmit_adress)private TextView adressTV;@ViewInject(R.id.product_ordsubmit_desc)private TextView descTV;@ViewInject(R.id.product_ordsubmit_price)private TextView priceTV;@ViewInject(R.id.product_ordsubmit_intg)private TextView intgTV;@ViewInject(R.id.product_ordsubmit_count1)private TextView countTV1;@ViewInject(R.id.product_ordsubmit_count)private TextView countTV;@ViewInject(R.id.product_ordsubmit_intgtotal1)private TextView intgtotal1TV;@ViewInject(R.id.product_ordsubmit_intgtotal2)private TextView intgtotal2TV;@ViewInject(R.id.product_ordsubmit_pricetotal1)private TextView pricetotal1TV;@ViewInject(R.id.product_ordsubmit_pricetotal2)private TextView pricetotal2TV;@ViewInject(R.id.product_ordsubmit_counttotal)private TextView counttotalTV;@ViewInject(R.id.product_ordsubmit_ok)private Button okBtn;@ViewInject(R.id.product_ordsubmit_say_et)private TextView sayEt;@ViewInject(R.id.product_ordsubmit_img)private ImageView img;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);ViewUtils.inject(this);goods = new Goods();goods.costprice=100;goods.productid=692356222;goods.producttypeid=11;goods.productname="测试商品";goods.discountprice=0.01;goods.productdescription="商品描述";goods.companydesc="测试商户简单描述";goods.comanyadress="商户地址未知";goods.companyname="测试商户";goods.score=1;goods.status=1;goods.stock=300;count=1;initData();initView();}private void initData() {username ="客户名称";mobile = "13800380038";adress="客户地址";}private void initView() {    usernameTV.setText("收货人:"+username);phoneTV.setText(mobile+"");adressTV.setText(adress);descTV.setText(goods.productdescription);priceTV.setText("￥"+goods.discountprice);intgTV.setText("积分:"+goods.score);countTV1.setText("X"+count);countTV.setText(count+"");intgtotal1TV.setText("共得到"+count*goods.score+"积分");intgtotal2TV.setText("积分:"+count*goods.score);counttotalTV.setText("共"+count+"件");pricetotal1TV.setText("￥"+Arith.mul(goods.discountprice, count));pricetotal2TV.setText("￥"+Arith.mul(goods.discountprice, count));//ImageLoader.getInstance().displayImage(goods.pic1, img);}/*** 增加数量* @param v*/@OnClick(R.id.product_ordsubmit_count_add)public void add(View v) {count++;countTV1.setText("X"+count);countTV.setText(count+"");intgtotal1TV.setText("共得到"+count*goods.score+"积分");intgtotal2TV.setText("积分:"+count*goods.score);counttotalTV.setText("共"+count+"件");pricetotal1TV.setText("￥"+Arith.mul(goods.discountprice, count));pricetotal2TV.setText("￥"+Arith.mul(goods.discountprice, count));}/*** 减少数量* @param v*/@OnClick(R.id.product_ordsubmit_count_sub)public void sub(View v) {if (count>1) {count--;countTV1.setText("X"+count);countTV.setText(count+"");intgtotal1TV.setText("共得到"+count*goods.score+"积分");intgtotal2TV.setText("积分:"+count*goods.score);counttotalTV.setText("共"+count+"件");pricetotal1TV.setText("￥"+Arith.mul(goods.discountprice, count));pricetotal2TV.setText("￥"+Arith.mul(goods.discountprice, count));}}/*** 提交订单* @param v*/@OnClick(R.id.product_ordsubmit_ok)public void submit(View v) {final OrderInfo orderInfo=new OrderInfo();orderInfo.userid=13752;orderInfo.areacode=23;orderInfo.buildno="10";orderInfo.roomno="1001";orderInfo.producttypeid=goods.producttypeid;orderInfo.productid=goods.productid;orderInfo.amount=goods.discountprice;//单价orderInfo.account=count;//数量orderInfo.totalamount=Arith.mul(goods.discountprice, count);//double offsetamount;//抵扣金额orderInfo.score=count*goods.score;//int assessitem;//评价项//int assesslevel;//评价级别//String assesscontent;//评价内容//long payid=;//支付编号orderInfo.status=2;//支付状态待付款orderInfo.type=11;//日用品orderInfo.usermemo =sayEt.getText().toString();//业主备注orderInfo.address =adress;orderInfo.productname =goods.productname;//orderInfo.desccontext =goods.productdescription;//orderInfo.outtradeno=System.currentTimeMillis()+""+orderInfo.userid;orderInfo.merchantid=goods.companyid;submitorder(orderInfo);}/*** 订单提交成功，进入付款界面* @param orderInfo * @return*/private void submitorder(OrderInfo orderInfo) {Intent intent=new Intent(this, SelectPayTypeActivity.class);intent.putExtra("data", orderInfo);startActivity(intent);}
}

<span style="white-space:pre">    </span>activty_main.xml

<pre name="code" class="html"><?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><ScrollView android:layout_width="match_parent"android:layout_height="0dp"android:background="@color/igray"android:layout_weight="1"><LinearLayout android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical"><LinearLayout android:layout_width="match_parent"android:layout_height="wrap_content"android:paddingLeft="15dp"android:paddingRight="15dp"android:paddingTop="10dp"android:paddingBottom="10dp"android:orientation="vertical"android:background="@color/white"><LinearLayout android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"><TextView android:id="@+id/product_ordsubmit_username"android:layout_width="0dp"android:layout_height="wrap_content"android:layout_weight="1"android:textSize="14sp"android:gravity="center_vertical"android:textColor="@color/black"android:text="收货人:"/> <TextView android:id="@+id/product_ordsubmit_phone"android:layout_width="0dp"android:layout_height="wrap_content"android:layout_weight="1"android:textSize="14sp"android:gravity="center_vertical|right"android:textColor="@color/igray_et"android:text="13862325641"/> </LinearLayout><LinearLayout android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical"><TextView android:layout_width="match_parent"android:layout_height="wrap_content"android:textSize="14sp"android:gravity="center_vertical"android:textColor="@color/igray_et"android:text="收货地址:"/> <TextView android:id="@+id/product_ordsubmit_adress"android:layout_width="match_parent"android:layout_height="wrap_content"android:textSize="14sp"android:textColor="@color/igray_et"android:drawableRight="@drawable/next"android:text="上海市徐汇区浦北路中星城15号"/> </LinearLayout></LinearLayout><View android:layout_width="match_parent"android:layout_height="5dp"android:background="@color/igray"/><LinearLayout android:layout_width="match_parent"android:layout_height="wrap_content"android:background="@color/white"android:paddingLeft="15dp"android:paddingRight="15dp"android:orientation="vertical"><LinearLayout android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"><ImageViewandroid:id="@+id/product_ordsubmit_img"   android:layout_width="100dp"android:layout_height="100dp"android:scaleType="centerCrop"android:src="@drawable/user_head" /><LinearLayout android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><TextView android:id="@+id/product_ordsubmit_desc"android:layout_width="match_parent"android:layout_height="0dp"android:layout_weight="1"android:textSize="14sp"android:text="商品描述"android:layout_margin="10dp"android:textColor="@color/black"/><LinearLayout android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"><TextView android:id="@+id/product_ordsubmit_price"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="￥49"android:textSize="18sp"android:textColor="@color/Orange"android:layout_margin="5dp"/><TextView android:id="@+id/product_ordsubmit_intg"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="积分:2"android:textSize="14sp"android:layout_margin="5dp"android:textColor="@color/igray_et"/><View android:layout_width="0dp"android:layout_height="0dp"android:layout_weight="1"/><TextView android:id="@+id/product_ordsubmit_count1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="X2"android:textSize="14sp"android:layout_margin="5dp"android:textColor="@color/igray_et"/></LinearLayout></LinearLayout></LinearLayout><LinearLayout android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"android:paddingTop="5dp"android:gravity="center_vertical"android:paddingBottom="5dp"><TextView android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="购买数量"android:textColor="@color/black"android:textSize="14sp"/><View android:layout_width="0dp"android:layout_height="match_parent"android:layout_weight="1"/><ImageView android:id="@+id/product_ordsubmit_count_sub"android:layout_width="25dp"android:layout_height="25dp"android:src="@drawable/sub_orange"/><TextViewandroid:id="@+id/product_ordsubmit_count"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="3"android:textColor="@color/black"android:layout_marginLeft="10dp"android:layout_marginRight="10dp"android:textSize="18sp"/><ImageView android:id="@+id/product_ordsubmit_count_add"android:layout_width="25dp"android:layout_height="25dp"android:src="@drawable/add_orange"/></LinearLayout><LinearLayout android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"android:paddingTop="5dp"android:focusableInTouchMode="true"android:gravity="center_vertical"android:paddingBottom="5dp"><TextView android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="业主留言:"android:textColor="@color/black"android:textSize="14sp"/><EditText android:id="@+id/product_ordsubmit_say_et"android:layout_width="wrap_content"android:layout_height="wrap_content"android:hint="选填,可以填你对卖家一致达成的要求"android:textColor="@color/igray_et"android:layout_marginLeft="10dp"android:singleLine="true"android:layout_marginRight="10dp"android:textSize="14sp"/></LinearLayout><LinearLayout android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"android:paddingTop="5dp"android:gravity="center_vertical"android:paddingBottom="5dp"><TextView android:id="@+id/product_ordsubmit_intgtotal1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="共得到6积分"android:textColor="@color/igray_et"android:textSize="14sp"/><View android:layout_width="0dp"android:layout_height="match_parent"android:layout_weight="1"/><TextView android:id="@+id/product_ordsubmit_counttotal"android:layout_width="wrap_content"android:layout_height="wrap_content"android:textSize="14sp"android:textColor="@color/black"android:text="共3件"/><TextView android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="合计:"android:textColor="@color/black"android:layout_marginLeft="10dp"android:textSize="14sp"/><TextView android:id="@+id/product_ordsubmit_pricetotal1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:textSize="18sp"android:textColor="@color/Orange"android:text="￥127"/></LinearLayout></LinearLayout></LinearLayout></ScrollView><LinearLayout android:layout_width="match_parent"android:layout_height="44dp"android:paddingLeft="15dp"android:paddingRight="15dp"android:paddingTop="5dp"android:paddingBottom="5dp"android:gravity="right|center_vertical"android:background="@color/white"><TextView android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="合计:"android:textColor="@color/black"android:textSize="14sp"/><TextView android:id="@+id/product_ordsubmit_pricetotal2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:textSize="14sp"android:textColor="@color/Orange"android:text="￥127"/><TextView android:id="@+id/product_ordsubmit_intgtotal2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="积分:6"android:textColor="@color/igray_et"android:layout_marginLeft="10dp"android:layout_marginRight="10dp"android:textSize="12sp"/><Button android:id="@+id/product_ordsubmit_ok"android:layout_width="wrap_content"android:layout_height="wrap_content"android:background="@drawable/shape_btn_oval_orange_bg2"android:text="确认"/></LinearLayout></LinearLayout>

2.在mainactivty中点击确认按钮调用支付方式选择页面SelectPayTypeActivity，用来发起支付选择

SelectPayTypeActivity.java

<pre name="code" class="java">@ContentView(R.layout.activity_select_pay_type)
public class SelectPayTypeActivity extends Activity {@ViewInject(R.id.paytype_of_weixin_ck)private CheckBox weixinCK;@ViewInject(R.id.paytype_of_zhifubao_ck)private CheckBox zhifubaoCK;@ViewInject(R.id.last_pay_count_tv)private TextView payCountTv;private OrderInfo orderInfo;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);ViewUtils.inject(this);initData();initView();}private void initView() {payCountTv.setText("￥"+orderInfo.totalamount);}private void initData() {orderInfo=(OrderInfo) getIntent().getSerializableExtra("data");}@Overrideprotected void onNewIntent(Intent intent) {super.onNewIntent(intent);int code=intent.getIntExtra("result", 1);switch (code) {case 0://表示成功finish();break;case -1://表示失败finish();       break;case -2:表示取消finish();break;case 1://未知不做处理break;default:break;}}@OnClick(R.id.paytype_of_weixin)public void wx(View v) {if (zhifubaoCK.isChecked()) {zhifubaoCK.setChecked(false);}if (!weixinCK.isChecked()) {weixinCK.setChecked(true);}}@OnClick(R.id.paytype_of_zhifubao)public void zfb(View v) {if (weixinCK.isChecked()) {weixinCK.setChecked(false);}if (!zhifubaoCK.isChecked()) {zhifubaoCK.setChecked(true);}}@OnClick(R.id.paytype_of_weixin_ck)public void wxck(View v) {if (zhifubaoCK.isChecked()) {zhifubaoCK.setChecked(false);}if (!weixinCK.isChecked()) {weixinCK.setChecked(true);}}@OnClick(R.id.paytype_of_zhifubao_ck)public void zfbck(View v) {if (weixinCK.isChecked()) {weixinCK.setChecked(false);}if (!zhifubaoCK.isChecked()) {zhifubaoCK.setChecked(true);}}@OnClick(R.id.btn_pay_submit)public void paysubmit(View v) {if (weixinCK.isChecked()) {if (!isWeixinAvilible(this)) {Toast.makeText(this, "请先安装微信或者选择其他支付方式",0).show();return;}//微信支付payByWX(handler,orderInfo);}else{if (!isZfbAvilible(this)) {Toast.makeText(this, "请先安支付宝或者选择其他支付方式",0).show();return;}//支付宝支付payByzfb(handler,orderInfo);}}Handler handler=new Handler(){@Overridepublic void handleMessage(Message msg) {switch (msg.what) {case 9000://支付宝支付成功Intent it;finish();break;case 8000://支付宝支付失败finish();break;default:break;}}};/*** 调用支付宝支付* @param handler* @param order */private void payByzfb(Handler handler, OrderInfo order) {AlipayUtil alipay=new AlipayUtil(this,order,handler);}/*** 调用微信支付* @param handler* @param orderInfo2 */private void payByWX(Handler handler, OrderInfo order) {WXpayUtil wxpay=new WXpayUtil(this,order);}/*** 检查微信是否存在* @param context* @return*/public  boolean isWeixinAvilible(Context context) {PackageManager packageManager = context.getPackageManager();// 获取packagemanagerList<PackageInfo> pinfo = packageManager.getInstalledPackages(0);// 获取所有已安装程序的包信息if (pinfo != null) {for (int i = 0; i < pinfo.size(); i++) {String pn = pinfo.get(i).packageName;System.out.println(pinfo.get(i).packageName);if (pn.equals("com.tencent.mm")) {return true;}}}return false;}/*** 检查支付包是否存在* @param context* @return*/private boolean isZfbAvilible(Context context) {PackageManager packageManager = context.getPackageManager();// 获取packagemanagerList<PackageInfo> pinfo = packageManager.getInstalledPackages(0);// 获取所有已安装程序的包信息if (pinfo != null) {for (int i = 0; i < pinfo.size(); i++) {String pn = pinfo.get(i).packageName;System.out.println(pinfo.get(i).packageName);if (pn.equals("com.alipay.android.app")) {return true;}}}return false;}
}

activty_selecte_pay_type.xml

<pre name="code" class="html"><?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:background="@color/white"android:orientation="vertical" ><LinearLayout android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"android:padding="10dp"android:gravity="center_vertical"><TextView android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="10dp"android:textSize="18sp"android:textColor="@color/black"android:text="需支付:"/><TextView android:id="@+id/last_pay_count_tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginLeft="10dp"android:textSize="22sp"android:textColor="@color/Orange"android:text="￥152"/></LinearLayout><View android:layout_width="match_parent"android:layout_height="5dp"android:background="@color/igray"/><LinearLayout android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:paddingLeft="10dp"android:paddingRight="10dp"android:paddingBottom="10dp"><LinearLayout android:id="@+id/paytype_of_weixin" android:layout_width="match_parent"android:layout_height="wrap_content"android:padding="10dp"android:orientation="horizontal"android:gravity="center_vertical"><ImageView android:layout_width="44dp"android:layout_height="44dp"android:src="@drawable/icon64_wx"/><TextView android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="微信支付"android:layout_marginLeft="10dp"android:layout_marginRight="10dp"android:textSize="20sp"/><View android:layout_width="0dp"android:layout_height="match_parent"android:layout_weight="1"/><CheckBox android:id="@+id/paytype_of_weixin_ck" android:layout_width="wrap_content"android:checked="true"android:layout_height="wrap_content"android:focusable="false"/></LinearLayout><Viewandroid:layout_width="match_parent"android:layout_height="1dp"android:background="@color/igray"/><LinearLayout android:id="@+id/paytype_of_zhifubao"  android:layout_width="match_parent"android:layout_height="wrap_content"android:padding="10dp"android:orientation="horizontal"android:gravity="center_vertical"><ImageView android:layout_width="44dp"android:layout_height="44dp"android:src="@drawable/zfb_icon_120"/><TextView android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="支付宝"android:layout_marginLeft="10dp"android:layout_marginRight="10dp"android:textSize="20sp"/><View android:layout_width="0dp"android:layout_height="match_parent"android:layout_weight="1"/><CheckBox android:id="@+id/paytype_of_zhifubao_ck"  android:layout_width="wrap_content"android:layout_height="wrap_content"android:focusable="false"/></LinearLayout><View android:layout_width="match_parent"android:layout_height="1dp"android:background="@color/igray"/><RelativeLayout android:layout_width="match_parent"android:layout_height="match_parent"><Button android:id="@+id/btn_pay_submit"  android:layout_width="match_parent"android:layout_height="40dp"android:text="支付"android:textColor="@color/white"android:layout_marginBottom="10dp"android:layout_marginLeft="40dp"android:layout_marginRight="40dp"android:layout_alignParentBottom="true"android:background="@drawable/shape_btn_oval_orange_bg2"/></RelativeLayout></LinearLayout></LinearLayout>

3.根据支付方式调用对应工具类微信（WXpayUtil），支付宝（AlipayUtil）

WXpayUtil.java

public class WXpayUtil {private IWXAPI api;private OrderInfo order;private Context context;private PayReq req;private Map<String,String> resultunifiedorder;private static final String TAG = "ewuye.online.SelectPayTypeActivity";public WXpayUtil(Context mcontext,OrderInfo order){//初始化微信支付this.order=order;this.context=mcontext;if (TextUtils.isEmpty(ParameterConfig.WX_APP_ID) || TextUtils.isEmpty(ParameterConfig.WX_MCH_ID) || TextUtils.isEmpty(ParameterConfig.WX_API_KEY)) {new AlertDialog.Builder(context).setTitle("警告").setMessage("需要配置WX_APP_ID | WX_MCH_ID| WX_API_KEY\n请到ParameterConfig.java里配置").setPositiveButton("确定", new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialoginterface, int i) {//((Activity)context).finish();}}).show();return;}api = WXAPIFactory.createWXAPI(context, null);req = new PayReq();//生成prepay_idGetPrepayIdTask getPrepayId = new GetPrepayIdTask();getPrepayId.execute();}/*** 用于获取* @author 95**/private class GetPrepayIdTask extends AsyncTask<Void, Void, Map<String,String>> {private ProgressDialog dialog;@Overrideprotected void onPreExecute() {dialog = ProgressDialog.show(context, "提示", "正在获取预支付订单...");}@Overrideprotected void onPostExecute(Map<String,String> result) {if (dialog != null) {dialog.dismiss();}resultunifiedorder=result;genPayReq();}@Overrideprotected void onCancelled() {super.onCancelled();}@Overrideprotected Map<String,String>  doInBackground(Void... params) {String url = String.format("https://api.mch.weixin.qq.com/pay/unifiedorder");String entity = genProductArgs();Log.e("orion",entity);byte[] buf = httpPost(url, entity);String content = new String(buf);Log.e("orion", content);Map<String,String> xml=decodeXml(content);return xml;}}private void genPayReq() {req.appId = ParameterConfig.WX_APP_ID;req.partnerId = ParameterConfig.WX_MCH_ID;req.prepayId = resultunifiedorder.get("prepay_id");req.packageValue = "prepay_id="+resultunifiedorder.get("prepay_id");req.nonceStr = genNonceStr();req.timeStamp = String.valueOf(genTimeStamp());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);Log.e("orion", signParams.toString());sendPayReq();}private void sendPayReq() {api.registerApp(ParameterConfig.WX_APP_ID);api.sendReq(req);}private String genProductArgs() {StringBuffer xml = new StringBuffer();try {String    nonceStr = genNonceStr();xml.append("</xml>");List<NameValuePair> packageParams = new LinkedList<NameValuePair>();packageParams.add(new BasicNameValuePair("appid", ParameterConfig.WX_APP_ID));packageParams.add(new BasicNameValuePair("body", order.productname));packageParams.add(new BasicNameValuePair("mch_id", ParameterConfig.WX_MCH_ID));packageParams.add(new BasicNameValuePair("nonce_str", nonceStr));packageParams.add(new BasicNameValuePair("notify_url", ParameterConfig.WX_notifyUrl));packageParams.add(new BasicNameValuePair("out_trade_no",genOutTradNo()));packageParams.add(new BasicNameValuePair("spbill_create_ip","127.0.0.1"));packageParams.add(new BasicNameValuePair("total_fee", (int)(order.totalamount*100)+""));packageParams.add(new BasicNameValuePair("trade_type", "APP"));String sign = genPackageSign(packageParams);packageParams.add(new BasicNameValuePair("sign", sign));String xmlstring =toXml(packageParams);return new String(xmlstring.toString().getBytes(), "ISO8859-1");//return xmlstring;} catch (Exception e) {Log.e(TAG, "genProductArgs fail, ex = " + e.getMessage());return null;}}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(ParameterConfig.WX_API_KEY);String appSign = getMessageDigest(sb.toString().getBytes());Log.e("orion",appSign);return appSign;}private  HttpClient getNewHttpClient() { try { KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType()); trustStore.load(null, null); SSLSocketFactory sf = new SSLSocketFactoryEx(trustStore); sf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER); HttpParams params = new BasicHttpParams(); HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1); HttpProtocolParams.setContentCharset(params, HTTP.UTF_8); SchemeRegistry registry = new SchemeRegistry(); registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80)); registry.register(new Scheme("https", sf, 443)); ClientConnectionManager ccm = new ThreadSafeClientConnManager(params, registry); return new DefaultHttpClient(ccm, params); } catch (Exception e) { return new DefaultHttpClient(); } }private class SSLSocketFactoryEx extends SSLSocketFactory {      SSLContext sslContext = SSLContext.getInstance("TLS");      public SSLSocketFactoryEx(KeyStore truststore) throws NoSuchAlgorithmException, KeyManagementException, KeyStoreException, UnrecoverableKeyException {      super(truststore);      TrustManager tm = new X509TrustManager() {      public X509Certificate[] getAcceptedIssuers() {      return null;      }      @Overridepublic void checkClientTrusted(X509Certificate[] chain, String authType) throws java.security.cert.CertificateException {}@Overridepublic void checkServerTrusted(X509Certificate[] chain, String authType) throws java.security.cert.CertificateException {}  };      sslContext.init(null, new TrustManager[] { tm }, null);      }      @Overridepublic Socket createSocket(Socket socket, String host, int port, boolean autoClose) throws IOException, UnknownHostException {return sslContext.getSocketFactory().createSocket(socket, host, port, autoClose);}@Overridepublic Socket createSocket() throws IOException {return sslContext.getSocketFactory().createSocket();} }  public  byte[] httpPost(String url, String entity) {if (url == null || url.length() == 0) {Log.e(TAG, "httpPost, url is null");return null;}HttpClient httpClient = getNewHttpClient();HttpPost httpPost = new HttpPost(url);try {httpPost.setEntity(new StringEntity(entity));httpPost.setHeader("Accept", "application/json");httpPost.setHeader("Content-type", "application/json");HttpResponse resp = httpClient.execute(httpPost);if (resp.getStatusLine().getStatusCode() != HttpStatus.SC_OK) {Log.e(TAG, "httpGet fail, status code = " + resp.getStatusLine().getStatusCode());return null;}return EntityUtils.toByteArray(resp.getEntity());} catch (Exception e) {Log.e(TAG, "httpPost exception, e = " + e.getMessage());e.printStackTrace();return null;}}private String genOutTradNo() {Random random = new Random();return getMessageDigest(String.valueOf(random.nextInt(10000)).getBytes());}public Map<String,String> decodeXml(String content) {try {Map<String, String> xml = new HashMap<String, String>();XmlPullParser parser = Xml.newPullParser();parser.setInput(new StringReader(content));int event = parser.getEventType();while (event != XmlPullParser.END_DOCUMENT) {String nodeName=parser.getName();switch (event) {case XmlPullParser.START_DOCUMENT:break;case XmlPullParser.START_TAG:if("xml".equals(nodeName)==false){//实例化student对象xml.put(nodeName,parser.nextText());}break;case XmlPullParser.END_TAG:break;}event = parser.next();}return xml;} catch (Exception e) {Log.e("orion",e.toString());}return null;}private String genNonceStr() {Random random = new Random();return getMessageDigest(String.valueOf(random.nextInt(10000)).getBytes());}private long genTimeStamp() {return System.currentTimeMillis() / 1000;}public  String getMessageDigest(byte[] buffer) {char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };try {MessageDigest mdTemp = MessageDigest.getInstance("MD5");mdTemp.update(buffer);byte[] md = mdTemp.digest();int j = md.length;char str[] = new char[j * 2];int k = 0;for (int i = 0; i < j; i++) {byte byte0 = md[i];str[k++] = hexDigits[byte0 >>> 4 & 0xf];str[k++] = hexDigits[byte0 & 0xf];}return new String(str);} catch (Exception e) {return null;}}/**生成签名*/private String genPackageSign(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(ParameterConfig.WX_API_KEY);String packageSign = getMessageDigest(sb.toString().getBytes()).toUpperCase();Log.e("orion",packageSign);return packageSign;}private String toXml(List<NameValuePair> params) {StringBuilder sb = new StringBuilder();sb.append("<xml>");for (int i = 0; i < params.size(); i++) {sb.append("<"+params.get(i).getName()+">");sb.append(params.get(i).getValue());sb.append("</"+params.get(i).getName()+">");}sb.append("</xml>");Log.e("orion",sb.toString());return sb.toString();}
}

AlipayUtil.java

public class AlipayUtil {private Activity context;private OrderInfo order;private Handler mhandler;private static final int SDK_PAY_FLAG = 1;public AlipayUtil(Activity context, OrderInfo order,Handler mhandler) {this.context=context;this.order=order;this.mhandler=mhandler;pay();}private void pay() {//判断是否注册商户到支付宝if (TextUtils.isEmpty(ParameterConfig.PARTNER) || TextUtils.isEmpty(ParameterConfig.RSA_PRIVATE) || TextUtils.isEmpty(ParameterConfig.SELLER)) {new AlertDialog.Builder(context).setTitle("警告").setMessage("需要配置PARTNER | RSA_PRIVATE| SELLER\n请到ParameterConfig.java里配置").setPositiveButton("确定", new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialoginterface, int i) {//((Activity)context).finish();}}).show();return;}String orderInfo = getOrderInfo(order);/*** 特别注意，这里的签名逻辑需要放在服务端，切勿将私钥泄露在代码中！*/String sign = sign(orderInfo);try {/*** 仅需对sign 做URL编码*/sign = URLEncoder.encode(sign, "UTF-8");} catch (UnsupportedEncodingException e) {e.printStackTrace();}/*** 完整的符合支付宝参数规范的订单信息*/final String payInfo = orderInfo + "&sign=\"" + sign + "\"&" + getSignType();Runnable payRunnable = new Runnable() {@Overridepublic void run() {// 构造PayTask 对象PayTask alipay = new PayTask(context);// 调用支付接口，获取支付结果String result = alipay.pay(payInfo, true);Message msg = new Message();msg.what = SDK_PAY_FLAG;msg.obj = result;mHandler.sendMessage(msg);}};// 必须异步调用Thread payThread = new Thread(payRunnable);payThread.start();}@SuppressLint("HandlerLeak")private Handler mHandler = new Handler() {@SuppressWarnings("unused")public void handleMessage(Message msg) {switch (msg.what) {case SDK_PAY_FLAG: {PayResult payResult = new PayResult((String) msg.obj);/*** 同步返回的结果必须放置到服务端进行验证（验证的规则请看https://doc.open.alipay.com/doc2/* detail.htm?spm=0.0.0.0.xdvAU6&treeId=59&articleId=103665&* docType=1) 建议商户依赖异步通知*/String resultInfo = payResult.getResult();// 同步返回需要验证的信息String resultStatus = payResult.getResultStatus();// 判断resultStatus 为“9000”则代表支付成功，具体状态码代表含义可参考接口文档if (TextUtils.equals(resultStatus, "9000")) {mhandler.sendEmptyMessage(9000);//Toast.makeText(context, "支付成功", Toast.LENGTH_SHORT).show();} else {// 判断resultStatus 为非"9000"则代表可能支付失败// "8000"代表支付结果因为支付渠道原因或者系统原因还在等待支付结果确认，最终交易是否成功以服务端异步通知为准（小概率状态）if (TextUtils.equals(resultStatus, "8000")) {Toast.makeText(context, "支付结果确认中", Toast.LENGTH_SHORT).show();} else {// 其他值就可以判断为支付失败，包括用户主动取消支付，或者系统返回的错误Toast.makeText(context, "支付宝支付失败", Toast.LENGTH_SHORT).show();}mhandler.sendEmptyMessage(8000);}break;}default:break;}};};/*** create the order info. 创建订单信息* */private String getOrderInfo(OrderInfo order) {// 签约合作者身份IDString orderInfo = "partner=" + "\"" + ParameterConfig.PARTNER + "\"";// 签约卖家支付宝账号orderInfo += "&seller_id=" + "\"" +ParameterConfig.SELLER + "\"";// 商户网站唯一订单号orderInfo += "&out_trade_no=" + "\"" + order.outtradeno + "\"";// 商品名称orderInfo += "&subject=" + "\"" + order.productname + "\"";// 商品详情orderInfo += "&body=" + "\"" + order.desccontext + "\"";// 商品金额orderInfo += "&total_fee=" + "\"" +  order.totalamount + "\"";// 服务器异步通知页面路径orderInfo += "¬ify_url=" + "\"" + ParameterConfig.aliPay_notifyURL + "\"";// 服务接口名称， 固定值orderInfo += "&service=\"mobile.securitypay.pay\"";// 支付类型， 固定值orderInfo += "&payment_type=\"1\"";// 参数编码， 固定值orderInfo += "&_input_charset=\"utf-8\"";// 设置未付款交易的超时时间// 默认30分钟，一旦超时，该笔交易就会自动被关闭。// 取值范围：1m～15d。// m-分钟，h-小时，d-天，1c-当天（无论交易何时创建，都在0点关闭）。// 该参数数值不接受小数点，如1.5h，可转换为90m。orderInfo += "&it_b_pay=\"30m\"";// extern_token为经过快登授权获取到的alipay_open_id,带上此参数用户将使用授权的账户进行支付// orderInfo += "&extern_token=" + "\"" + extern_token + "\"";// 支付宝处理完请求后，当前页面跳转到商户指定页面的路径，可空orderInfo += "&return_url=\"m.alipay.com\"";// 调用银行卡支付，需配置此参数，参与签名， 固定值 （需要签约《无线银行卡快捷支付》才能使用）// orderInfo += "&paymethod=\"expressGateway\"";return orderInfo;}/*** sign the order info. 对订单信息进行签名* * @param content*            待签名订单信息*/private String sign(String content) {return SignUtils.sign(content, ParameterConfig.RSA_PRIVATE);}/*** get the sign type we use. 获取签名方式* */private String getSignType() {return "sign_type=\"RSA\"";}
}

微信的回调actvity

WXPayEntryActivity.java

package com.gan.mypay.wxapi;
import com.gan.mypay.ParameterConfig;
import com.gan.mypay.R;
import com.gan.mypay.SelectPayTypeActivity;
import com.tencent.mm.sdk.constants.ConstantsAPI;
import com.tencent.mm.sdk.modelbase.BaseReq;
import com.tencent.mm.sdk.modelbase.BaseResp;
import com.tencent.mm.sdk.openapi.IWXAPI;
import com.tencent.mm.sdk.openapi.IWXAPIEventHandler;
import com.tencent.mm.sdk.openapi.WXAPIFactory;import android.app.Activity;
import android.app.AlertDialog;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;public class WXPayEntryActivity extends Activity implements IWXAPIEventHandler{private static final String TAG = "MicroMsg.SDKSample.WXPayEntryActivity";private IWXAPI api;// private TextView reulttv;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.wx_pay_result);api = WXAPIFactory.createWXAPI(this, ParameterConfig.WX_APP_ID);api.handleIntent(getIntent(), this);}@Overrideprotected void onNewIntent(Intent intent) {super.onNewIntent(intent);setIntent(intent);api.handleIntent(intent, this);}@Overridepublic void onReq(BaseReq req) {}@Overridepublic void onResp(BaseResp resp) {Log.d(TAG, "onPayFinish, errCode = " + resp.errCode);if (resp.getType() == ConstantsAPI.COMMAND_PAY_BY_WX) {AlertDialog.Builder builder = new AlertDialog.Builder(this);builder.setTitle("提示");//builder.setMessage(getString(R.string.pay_result_callback_msg, String.valueOf(resp.errCode)));builder.show();Intent intent;int code = resp.errCode;switch (code) {case 0:Toast.makeText(this, "支付成功",0).show();intent=new Intent(this,SelectPayTypeActivity.class);intent.putExtra("result", 0);startActivity(intent);finish();break;case -1:Toast.makeText(this, "支付失败",0).show();intent=new Intent(this,SelectPayTypeActivity.class);intent.putExtra("result", -1);startActivity(intent);finish();break;case -2:Toast.makeText(this, "支付取消",0).show();intent=new Intent(this,SelectPayTypeActivity.class);intent.putExtra("result", -2);startActivity(intent);finish();break;default:break;}}}
}

以上就是整个集合过程，不是很详细，可以看我的Demo源码