解决webview不支持input type=file

1.activity定义

    public ValueCallback<Uri> mUploadMessage;
    public final static int FILECHOOSER_RESULTCODE = 1;

2.扩展WebChromeClient

    WebChromeClient chromeClient = new WebChromeClientImpl();
    view.setWebChromeClient(chromeClient);

3实现WebChromeClientImpl类

 private class WebChromeClientImpl extends WebChromeClient{

        //扩展支持alert事件
        @Override
        public boolean onJsAlert(WebView view, String url, String message,JsResult result) {
            Builder builder = new Builder(view.getContext());
            builder.setTitle("商机通提示").setMessage(message).setPositiveButton("确定", null);
            builder.setCancelable(false);
            builder.setIcon(R.drawable.ic_launcher);
            AlertDialog dialog = builder.create();
            dialog.show();
            result.confirm();
            return true;
        }
         //扩展浏览器上传文件
        //3.0++版本
        public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {
            mUploadMessage = uploadMsg;
            Intent i = new Intent(Intent.ACTION_GET_CONTENT);
            i.addCategory(Intent.CATEGORY_OPENABLE);
            i.setType("*/*");
            activity.startActivityForResult(Intent.createChooser(i, "File Chooser"), FILECHOOSER_RESULTCODE);
        }
        //3.0--版本
        public void openFileChooser(ValueCallback<Uri> uploadMsg) {
            mUploadMessage = uploadMsg;
            Intent i = new Intent(Intent.ACTION_GET_CONTENT);
            i.addCategory(Intent.CATEGORY_OPENABLE);
            i.setType("*/*");
            activity.startActivityForResult(Intent.createChooser(i, "file Browser"),FILECHOOSER_RESULTCODE);
        }
    }