android webview中嵌套的h5頁面下載apk

繼承一個接口，DownloadListener，然後加載 重載函數

 @Override
public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) {
    Uri uri = Uri.parse(url);
    Intent intent = new Intent(Intent.ACTION_VIEW, uri);
    startActivity(intent);
}

最後當然是註冊監聽：
webView.setDownloadListener(xxxx);