android通过webview调起支付宝app支付

傷城~ 2022-06-16 10:17 537阅读 0赞

android通过webview调起支付宝app支付  
webview在加载网页的时候会默认调起手机自带的浏览器加载网页，用户体验不好。但当用户设置浏览器客户端（setWebViewClient）设置这样的监听事件之后，当请求url的时候就不会打开手机自带的浏览器。

webview.setWebViewClient(new WebViewClient() \{

@Override
            public void onPageStarted(WebView view, String url, Bitmap favicon) {
                super.onPageStarted(view, url, favicon);
            }
    
            @Override
            public void onPageFinished(WebView view, String url) {
                super.onPageFinished(view, url);
                LoadingDialog.closeDialog();
            }
    
        });

在此方法中可以监听浏览器开始加载网页和加载网页结束。

今天着重讲的并不是上边的两个方法而是下面的这位

putinmoney\_webview.setWebViewClient(new WebViewClient() \{  
@Override  
public boolean shouldOverrideUrlLoading(WebView view, String url) \{\}  
\});

shouldOverrideUrlLoading并不是每次都在onPageStarted之前开始调用的，只有在调用webview.loadURL的时候才会调用。

webview.loadUrl(“[https://qr.alipay.com/bax05351pgjhc4yegd2y2084][https_qr.alipay.com_bax05351pgjhc4yegd2y2084]“);  
但发起请求的时候后，webview的连续动作是先后请求两个url

1.[https://mobilecodec.alipay.com/client\_download.htm?qrcode=bax05351pgjhc4yegd2y2084][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][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]

之后返回一个意图，也是用这个意图来打开支付宝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, "访问的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;
    
            }
    
        });

此外要对webview设置下：

WebSettings webSettings = webview.getSettings();  
webSettings.setJavaScriptEnabled(true);  
// 设置可以访问文件  
webSettings.setAllowFileAccess(true);  
// 设置支持缩放  
webSettings.setBuiltInZoomControls(true);  
webSettings.setCacheMode(WebSettings.LOAD\_NO\_CACHE);  
// webSettings.setDatabaseEnabled(true);

// 使用localStorage则必须打开  
webSettings.setDomStorageEnabled(true);

webSettings.setGeolocationEnabled(true);

实例下载地址：[https://github.com/reachchen/loadurltoali.git][https_github.com_reachchen_loadurltoali.git]

在项目中发现的问题在此修正：

发现一些手机（例如一些升级了7.0的手机）在请求后并没有返回intent，所以就会出现调不起支付宝的情况。但是用浏览器直接打开是可以的

兼容的思路如下：

新建一个线程，在用户发出请求后，如果10秒的时间没有收到调起的intent，就用浏览器直接调起。

代码如下：

public boolean parseScheme(String url) {
        if (url.contains("platformapi/startapp")){
            return true;
        } else if(url.contains("web-other")){
            return false;
        }else {
            return false;
        }
    }

[https_qr.alipay.com_bax05351pgjhc4yegd2y2084]: https://qr.alipay.com/bax05351pgjhc4yegd2y2084
[https_mobilecodec.alipay.com_client_download.htm_qrcode_bax05351pgjhc4yegd2y2084]: https://mobilecodec.alipay.com/client_download.htm?qrcode=bax05351pgjhc4yegd2y2084
[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]: 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
[https_github.com_reachchen_loadurltoali.git]: https://github.com/reachchen/loadurltoali.git