android通過webview調起支付寶app支付
webview在載入網頁的時候會預設調起手機自帶的瀏覽器載入網頁,使用者體驗不好。但當用戶設定瀏覽器客戶端(setWebViewClient)設定這樣的監聽事件之後,當請求url的時候就不會開啟手機自帶的瀏覽器。
webview.setWebViewClient(new WebViewClient() { @Override public void onPageStarted(WebView view, String url, Bitmap favicon) { super.onPageStarted(view, url, favicon); } @Overridepublic void onPageFinished(WebView view, String url) { super.onPageFinished(view, url); LoadingDialog.closeDialog(); } });
在此方法中可以監聽瀏覽器開始載入網頁和載入網頁結束。
今天著重講的並不是上邊的兩個方法而是下面的這位
putinmoney_webview.setWebViewClient(new WebViewClient() { @Overridepublic boolean shouldOverrideUrlLoading(WebView view, String url) { } });
shouldOverrideUrlLoading並不是每次都在onPageStarted之前開始呼叫的,只有在呼叫webview.loadURL的時候才會呼叫。
webview.loadUrl("https://qr.alipay.com/bax05351pgjhc4yegd2y2084");
但發起請求的時候後,webview的連續動作是先後請求兩個url
1.https://mobilecodec.alipay.com/client_download.htm?qrcode=bax05351pgjhc4yegd2y2084
2.https://ds.alipay.com/from=mobilecodec&scheme=alipayqr%3A%2F%2Fplatformapi%2Fstartapp%3FsaId%3D10000007%26clientVersion%3D3.7.0.0718%26qrcode%3Dhttps%253A%252F%252Fqr.alipay.com%252Fbax05351pgjhc4yegd2y2084%253F_s%253Dweb-other
之後返回一個意圖,也是用這個意圖來開啟支付寶app
intent://platformapi/startapp?saId=10000007&clientVersion=3.7.0.0718&qrcode=https%3A%2F%2Fqr.alipay.com%2Fbax05351pgjhc4yegd2y2084%3F_s%3Dwebother&_t=1474448799004#Intent;scheme=alipayqr;package=com.eg.android.AlipayGphone;end
webview.setWebViewClient(new WebViewClient(){ @Override public void onPageStarted(WebView view, String url, Bitmap favicon) { // TODO Auto-generated method stub super.onPageStarted(view, url, favicon); } @Override public void onPageFinished(WebView view, String url) { // TODO Auto-generated method stub super.onPageFinished(view, url); } @Override public boolean shouldOverrideUrlLoading(WebView view, String url) { Log.e(TAG, "訪問的url地址:" + url); if (parseScheme(url)) { try { Uri uri = Uri.parse(url); Intent intent; intent = Intent.parseUri(url, Intent.URI_INTENT_SCHEME); intent.addCategory("android.intent.category.BROWSABLE"); intent.setComponent(null); // intent.setSelector(null); startActivity(intent); } catch (Exception e) { } } else { view.loadUrl(url); } return true; } });
關於"android.intent.category.BROWSABLE"參考:
http://blog.csdn.net/gf771115/article/details/7827833
此外要對webview設定下:
WebSettings webSettings = webview.getSettings(); webSettings.setJavaScriptEnabled(true); // 設定可以訪問檔案 webSettings.setAllowFileAccess(true); // 設定支援縮放 webSettings.setBuiltInZoomControls(true); webSettings.setCacheMode(WebSettings.LOAD_NO_CACHE); // webSettings.setDatabaseEnabled(true); // 使用localStorage則必須開啟 webSettings.setDomStorageEnabled(true); webSettings.setGeolocationEnabled(true);
例項下載地址:https://github.com/reachchen/loadurltoali.git