一、前导
前面讲到了MEC支付，是在Web端集成好的，在手机端仅仅需通过WebView进行载入就可以，不须要不论什么Paypal第三方架包。以下将的是MPL支付。须要架包。
这样的支付的形式能够參考以下的演示：
https://www.paypal-biz.com/product/demo/product/mobile-payment/index.html
二、MPL支付案例
PaymentBean
package com.example.paypaldemo;
public class PaymentBean {
private float unitPrice;
private int quantity;
private float discount;
public float getUnitPrice() {
return unitPrice;
}
public void setUnitPrice(float unitPrice) {
this.unitPrice = unitPrice;
}
public int getQuantity() {
return quantity;
}
public void setQuantity(int quantity) {
this.quantity = quantity;
}
public float getDiscount() {
return discount;
}
public void setDiscount(float discount) {
this.discount = discount;
}
public PaymentBean(float unitPrice, int quantity, float discount) {
super();
this.unitPrice = unitPrice;
this.quantity = quantity;
this.discount = discount;
}
}
PizzaMain
package com.example.paypaldemo;
/**
* https://www.paypal-biz.com/product/demo/product/mobile-payment/index.html
*/
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.RelativeLayout;
import android.widget.RelativeLayout.LayoutParams;
import android.widget.Toast;
import com.paypal.android.MEP.CheckoutButton;
import com.paypal.android.MEP.PayPal;
import com.paypal.android.MEP.PayPalActivity;
import com.paypal.android.MEP.PayPalInvoiceData;
import com.paypal.android.MEP.PayPalInvoiceItem;
import com.paypal.android.MEP.PayPalPayment;
public class PizzaMain extends Activity implements OnClickListener {
private boolean _paypalLibraryInit;
private static final String TAG = "PizzaMain";
// APP-80W284485P519543T
private CheckoutButton launchPayPalButton;
private int PAYPAL_BUTTON_ID = 1341515;
private List<PaymentBean> list = new ArrayList<PaymentBean>();;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initLibrary();
showPayPalButton();
}
public void initLibrary() {
PayPal pp = PayPal.getInstance();
if (pp == null) { // Test to see if the library is already initialized
// This main initialization call takes your Context, AppID, and
// target server
pp = PayPal.initWithAppID(this, "APP-80W284485P519543T", PayPal.ENV_NONE);
// Required settings:
// Set the language for the library
pp.setLanguage("en_US");
// Some Optional settings:
// Sets who pays any transaction fees. Possible values are:
// FEEPAYER_SENDER, FEEPAYER_PRIMARYRECEIVER, FEEPAYER_EACHRECEIVER,
// and FEEPAYER_SECONDARYONLY
pp.setFeesPayer(PayPal.FEEPAYER_EACHRECEIVER);
// true = transaction requires shipping
pp.setShippingEnabled(true);
_paypalLibraryInit = true;
}
}
@Override
protected void onResume() {
super.onResume();
showPayPalButton();
}
private void showPayPalButton() {
// Generate the PayPal checkout button and save it for later use
PayPal pp = PayPal.getInstance();
// Paypal按钮类型：CheckoutButton.TEXT_DONATE捐赠，CheckoutButton.TEXT_PAY付款
launchPayPalButton = pp.getCheckoutButton(this, PayPal.BUTTON_278x43, CheckoutButton.TEXT_PAY);
// The OnClick listener for the checkout button
launchPayPalButton.setOnClickListener(this);
// Add the listener to the layout
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
params.bottomMargin = 10;
launchPayPalButton.setLayoutParams(params);
launchPayPalButton.setId(PAYPAL_BUTTON_ID);
((RelativeLayout) findViewById(R.id.RelativeLayout01)).addView(launchPayPalButton);
((RelativeLayout) findViewById(R.id.RelativeLayout01)).setGravity(Gravity.CENTER_HORIZONTAL);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (resultCode) {
// The payment succeeded
case Activity.RESULT_OK:
Toast.makeText(this, "transact successful,has submit infomation to PayPal", Toast.LENGTH_SHORT).show();
String payKey = data.getStringExtra(PayPalActivity.EXTRA_PAY_KEY);
String transactionID = data.getStringExtra(PayPalActivity.EXTRA_CORRELATION_ID);// 交易号
String paymentInfo = data.getStringExtra(PayPalActivity.EXTRA_PAYMENT_INFO);// 交易信息
String status = data.getStringExtra(PayPalActivity.EXTRA_PAYMENT_STATUS);// 交易状态
Log.e(TAG, "payKey:" + payKey + ",transactionID:" + transactionID + ",paymentInfo" + paymentInfo + ",status" + status);
break;
// The payment was canceled
case Activity.RESULT_CANCELED:
Toast.makeText(this, "cancle", Toast.LENGTH_SHORT).show();
break;
// The payment failed, get the error from the EXTRA_ERROR_ID and
// EXTRA_ERROR_MESSAGE
case PayPalActivity.RESULT_FAILURE:
Toast.makeText(this, "error", Toast.LENGTH_SHORT).show();
String errorID = data.getStringExtra(PayPalActivity.EXTRA_ERROR_ID);
String errorMessage = data.getStringExtra(PayPalActivity.EXTRA_ERROR_MESSAGE);
}
}
// 点击按钮之后的操作都是在Payment中进行的，也就是在PayActivity中进行的，交易完成后，会返回到当前Activity
@Override
public void onClick(View arg0) {
PayPalPayment payment = new PayPalPayment();
// 设置货币种类，默认是USD
payment.setCurrencyType("USD");
// 收件人信息：email或者phone number
payment.setRecipient("admin@chinabuye.com");
// 设置物品描写叙述。默觉得空
payment.setDescription("");
// 显示给买家看的商户名称， 假设没有设置则显示收款方email
payment.setMerchantName("ChinaBuye");
// 设置付款类型,捐款、个人、商品
// PAYMENT_TYPE_SERVICE, PAYMENT_TYPE_PERSONAL, or PAYMENT_TYPE_NONE
payment.setPaymentType(PayPal.PAYMENT_TYPE_GOODS);
// 交易结果还会调用web远端的一个地址传递交易数据
payment.setIpnUrl("http://www...../.../x.php");
// 设置交易备注信息,千万别写中文。否则怎么错的都不知道
payment.setMemo("Note: please give me the invoice");
// PayPalInvoiceData can contain tax and shipping amounts, and an
// ArrayList of PayPalInvoiceItem that you can fill out.
// These are not required for any transaction.
PayPalInvoiceData invoice = new PayPalInvoiceData();
// 设置税
invoice.setTax(new BigDecimal(2f));
list.clear();
// 向购物车中加入一个产品
PayPalInvoiceItem item1 = new PayPalInvoiceItem();
item1.setName("gadget");
item1.setID("01");
// 单位价格和数量的问题
// 这里有个问题。就是价格格式必须xx#.##的形式。否则交易不成功，解决方式參考formatPrice()
float unitPrice = 12.22f;
int quantity = 2;
float discount = 1;
PaymentBean bean1 = new PaymentBean(unitPrice, quantity, discount);
list.add(bean1);
item1.setTotalPrice(formatTotalPrice(unitPrice, quantity, discount));// 单位价格*数量
item1.setUnitPrice(formatUnitPrice(unitPrice));// 单位价格
item1.setQuantity(2); // 数量
invoice.getInvoiceItems().add(item1); // 加入item到购物篮
// 设置付款金额，不含税和运费
payment.setSubtotal(formatSubtotal());
Intent paypalIntent = PayPal.getInstance().checkout(payment, this);
this.startActivityForResult(paypalIntent, 1);
// 以下这样的方法报错
// Intent paypalIntent = new Intent(this, PayPalActivity.class);
// paypalIntent.putExtra(PayPalActivity.EXTRA_PAYMENT_INFO, payment);
// this.startActivityForResult(paypalIntent, 1);
}
// 格式化付款金额
private BigDecimal formatSubtotal() {
float subTotal = 0;
for (int x = 0; x < list.size(); x++) {
PaymentBean bean = list.get(x);
subTotal += bean.getQuantity() * bean.getUnitPrice() * bean.getDiscount();
}
return formatUnitPrice(subTotal);
}
// 格式化单个商品的总价价格
private BigDecimal formatTotalPrice(float unitPrice, int quantity, float discount) {
DecimalFormat dfm = new DecimalFormat("#.##");
float price = unitPrice * discount;
BigDecimal big = new BigDecimal(dfm.format(price * quantity));
return big;
}
// 格式化单个商品的单位价格
private BigDecimal formatUnitPrice(float unitPrice) {
DecimalFormat dfm = new DecimalFormat("#.##");
BigDecimal big = new BigDecimal(dfm.format(unitPrice));
return big;
}
}
项目结构例如以下：
