Paypal-Express Checkout快捷支付方式的android端開發心得（二）

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一、前置

上一篇講的不是非常好，這裡再又一次講一下。

Paypal手機支付有2種形式：

1.Mobile Express Checkout，MEC，快捷支付

2.MPL

假設採用MEC支付方式，這樣的方式點擊Checkoutbutton之後的頁面一直到付款結束都是url的形式，必須先有Web網站的支付，所以僅僅能通過WebView的形式進行記載,使用起來和Web網站效果一樣,假設載入的頁面中有些內容不想顯示，能夠隱藏。

二、MEC支付案例

package com.sound.chinabuye.activity;import http.HttpUrls;import java.util.List;import org.apache.http.cookie.Cookie;import tool.NewTokenCallBack;import tool.TokenTools;import tool.UserInfo;import android.app.Activity;import android.app.AlertDialog;import android.app.AlertDialog.Builder;import android.app.ProgressDialog;import android.content.DialogInterface;import android.content.Intent;import android.graphics.Bitmap;import android.os.Bundle;import android.util.Log;import android.view.KeyEvent;import android.webkit.CookieManager;import android.webkit.CookieSyncManager;import android.webkit.JsResult;import android.webkit.WebChromeClient;import android.webkit.WebSettings;import android.webkit.WebView;import android.webkit.WebViewClient;import android.widget.Toast;import com.sound.chinabuye.R;import com.sound.chinabuye.bean.BroadAction;public class CheckoutActivity2 extends Activity {public static final String TAG = "CheckoutActivity2";private WebView webView;private List<Cookie> cookies;private ProgressDialog dialog;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);manageActivity();webView = new WebView(this);webView.setWebViewClient(new MyWebViewClient());webView.setWebChromeClient(new MyChromeClient());WebSettings webSettings = webView.getSettings();webSettings.setJavaScriptEnabled(true);webSettings.setUseWideViewPort(false);webSettings.setSupportZoom(false);setContentView(webView);dialog = new ProgressDialog(this);dialog.setMessage(getString(R.string.loading));dialog.setCancelable(false);// 請求獲得cookiesrequestData();}private void requestData() {TokenTools.requestNewToken(CheckoutActivity2.this, new NewTokenCallBack() {@Overridepublic void getNewTokenSuccess(String newAccessToken) {if (newAccessToken != null) {String customerid = UserInfo.getUserInfoInstance().getUserid();String url = "http://www.chinabuye.com/service/product/listcartweb" + "?productid=64396&qty=1&customerid=" + customerid + "&ACCESSTOKEN=" + newAccessToken;webView.loadUrl(url);}}});}@Overrideprotected void onDestroy() {super.onDestroy();CookieSyncManager.createInstance(CheckoutActivity2.this);CookieManager cookieManager = CookieManager.getInstance();cookieManager.removeAllCookie();CookieSyncManager.getInstance().sync();}private void setCookiesVia2Url(String fromUrl, String toUrl) {CookieSyncManager.createInstance(CheckoutActivity2.this);CookieManager cookieManager = CookieManager.getInstance();String value = cookieManager.getCookie(fromUrl);cookieManager.setCookie(toUrl, value);CookieSyncManager.getInstance().sync();}private void manageActivity() {ActivityInstanceManager.getActivityInstanceManager().addActivity(this);}private class MyWebViewClient extends WebViewClient {private String currentUrl;@Overridepublic void onPageStarted(WebView view, String url, Bitmap favicon) {Log.e(TAG, "start:" + url);currentUrl = url;// 開始跳轉Paypal登入介面if (url.contains("http://www.chinabuye.com/service/product/listcartweb")) {dialog.show();}// 開始載入Place Order，包括從其它頁面返回的情況和開始提交訂單的情況if (url.contains("http://www.chinabuye.com/m/paypal/express/saveOrder") || url.contains("PayerID") || url.contains("http://www.chinabuye.com/m/paypal/express/review")) {if (dialog.isShowing()) {dialog.dismiss();}dialog.show();}// 開始載入 下單成功的介面if (url.contains("http://www.chinabuye.com/m/checkout/onepage/success")) {dialog.show();}super.onPageStarted(view, url, favicon);}@Overridepublic boolean shouldOverrideUrlLoading(WebView view, String url) {Log.e(TAG, "load:" + url);/** 這裡不做不論什麼攔截操作 ***/// view.loadUrl(url);// return true;return super.shouldOverrideUrlLoading(view, url);}@Overridepublic void onPageFinished(WebView view, String url) {Log.e(TAG, "finish:" + url);if (url.contains("customerid")) {String url2 = "http://www.chinabuye.com/m/checkout/cart";// 這個直接使用Web購物車，測試沒問題String url3 = "http://www.chinabuye.com/paypal/express/shortcut";// 這個直接攔截到登入介面，臨時沒發現問題setCookiesVia2Url(url, url3);view.loadUrl(url3);}// paypal登入介面載入完成if (url.contains("https://www.paypal.com/au/cgi-bin/webscr") && url.contains("#m")) {dialog.dismiss();}// Place Order介面載入完成if (url.contains("http://www.chinabuye.com/m/paypal/express/review")) {// 雖然在這之前已經進行了隱藏操作，可是偶爾還是會出現沒有隱藏的情況，這裡又一次載入一次hidePlaceOrderJS(view);dialog.dismiss();}// 下單成功的介面載入完成if (url.contains("http://www.chinabuye.com/m/checkout/onepage/success")) {// 雖然在這之前已經進行了隱藏操作，可是偶爾還是會出現沒有隱藏的情況，這裡又一次載入一次hideSaveOrderJS(view);dialog.dismiss();// 發送廣播,清空購物車Intent intent = new Intent();intent.setAction(BroadAction.EMPTY);CheckoutActivity2.this.sendBroadcast(intent);Log.e("sendbroad", "buy.success");}// 使用者郵箱資訊為空白if (url.contains("http://www.chinabuye.com/m/customer/account/edit")) {Toast.makeText(CheckoutActivity2.this, "Invalid email address NULL", 0).show();}super.onPageFinished(view, url);}// 處理在瀏覽器中的按鍵事件@Overridepublic boolean shouldOverrideKeyEvent(WebView view, KeyEvent event) {if (event.equals(KeyEvent.KEYCODE_BACK) && view.canGoBack()) {view.goBack();return true;} else if (event.equals(KeyEvent.KEYCODE_BACK)) {CheckoutActivity2.this.finish();return true;}return super.shouldOverrideKeyEvent(view, event);}// 載入頁面資源時會調用，比方載入圖片時，每載入一張圖片會調用一次@Overridepublic void onLoadResource(WebView view, String url) {// Log.e(TAG, "loadResource:" + url);// Web購物車if (currentUrl.contains("http://www.chinabuye.com/m/checkout/cart")) {hideMCartJS(view);}// Place Orderif (currentUrl.contains("http://www.chinabuye.com/m/paypal/express/review")) {hidePlaceOrderJS(view);}// 下單成功的頁面if (currentUrl.contains("http://www.chinabuye.com/m/checkout/onepage/success")) {hideSaveOrderJS(view);}// 改動地址的時候，最先調用的是該方法，為了體驗好，這裡先顯示對話方塊if (url.contains("http://www.chinabuye.com/m/paypal/express/ajaxEditAddress")) {dialog.show();}super.onLoadResource(view, url);}}// 隱藏M Cart介面的頭部和底部private void hideMCartJS(WebView view) {view.loadUrl("javascript:window.handler.show(document.getElementById('topheader').style.display='none');");view.loadUrl("javascript:window.handler.show(document.getElementById('footer').style.display='none');");}// 隱藏Place Order介面private void hidePlaceOrderJS(WebView view) {// 隱藏使用者和logo資訊view.loadUrl("javascript:window.handler.show(document.getElementById('topheader').style.display='none');");// 隱藏placeorder之後view.loadUrl("javascript:window.handler.show(document.getElementById('iph_menu').style.display='none');");// 隱藏最底部聯絡我們等資訊view.loadUrl("javascript:window.handler.show(document.getElementById('footer').style.display='none');");// 隱藏Review Review Order和Shipping Reminders資訊view.loadUrl("javascript:window.handler.show(document.getElementById('paypal_page_head').style.display='none');");view.loadUrl("javascript:window.handler.show(document.getElementById('paypal_important').style.display='none');");// 細節隱藏// view.loadUrl("javascript:window.handler.show(document.getElementById('paypal_change_shipping_address').style.display='none');");view.loadUrl("javascript:window.handler.show(document.getElementById('paypal_change_payment_method').style.display='none');");view.loadUrl("javascript:window.handler.show(document.getElementById('paypal_edit_shopping_cart').style.display='none');");}// 隱藏Save Order介面private void hideSaveOrderJS(WebView view) {view.loadUrl("javascript:window.handler.show(document.getElementById('topheader').style.display='none');");view.loadUrl("javascript:window.handler.show(document.getElementById('footer').style.display='none');");view.loadUrl("javascript:window.handler.show(document.getElementById('iph_menu').style.display='none');");view.loadUrl("javascript:window.handler.show(document.getElementsByClassName('button-set')[0].style.display='none');");}private class MyChromeClient extends WebChromeClient {// 處理javascript中的confirm，確認// 登入介面有該對話方塊// 繼續頁面有該對話方塊@Overridepublic boolean onJsConfirm(WebView view, String url, String message, final JsResult result) {Builder builder = new Builder(CheckoutActivity2.this);builder.setTitle("Confirm Dialog");builder.setMessage("Cancle the purchase and return to the ShoppingCart");Log.e(TAG, "Mesage:" + message);Log.e(TAG, "JsResult:" + result.toString());builder.setPositiveButton(R.string.ok, new AlertDialog.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// result.confirm();// 攔截確定buttonIntent intent = new Intent(CheckoutActivity2.this, CartActivity.class);startActivity(intent);finish();}});builder.setNegativeButton(R.string.cancel, new AlertDialog.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// 攔截取消buttonresult.cancel();}});builder.setCancelable(false);builder.create();builder.show();return true;}}@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {if(keyCode == KeyEvent.KEYCODE_BACK){//這樣會出現非常多奇怪的問題，還是直接結束//if(webView.canGoBack()){//webView.goBack();//}else{//CheckoutActivity2.this.finish();//}CheckoutActivity2.this.finish();return true;}return super.onKeyDown(keyCode, event);}}

上面這個案例是我在app中實際使用到的，沒有發現有什麼問題。做MEC支付，主要思想是過濾URL，進行對話方塊的顯示和消失、頁面隱藏操作等，中間涉及JS。

Paypal-Express Checkout快捷支付方式的android端開發心得（二）