今天公司突然上傳了一個網頁有上傳圖片功能，但是WebView沒有支援，沒辦法只能再寫些程式碼。然後就ok了，效果如下圖所示：

實現關鍵程式碼如下所示：

    @SuppressLint("NewApi")
    private void initmWebView() {
        mWebView.getSettings().setJavaScriptEnabled(true); // enable javascript
        //支援H5本地儲存 enable local storage
        mWebView.getSettings().setDatabaseEnabled(true
 
);
        String path = getApplicationContext().getDir("cache", Context.MODE_PRIVATE).getPath();
        mWebView.getSettings().setDatabasePath(path);

        mWebView.getSettings().setDomStorageEnabled(true);

        mWebView.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT);

        mWebView.getSettings().setUseWideViewPort(true
 
);
        mWebView.getSettings().setLoadWithOverviewMode(true);
        mWebView.getSettings().setSupportZoom(true);
        mWebView.getSettings().setBuiltInZoomControls(true);
        if (android.os.Build.VERSION.SDK_INT >= 11) {

            mWebView.getSettings().setDisplayZoomControls(false
 
);

        } else {
            // 3.0一下可用反射解決

        }
        mWebView.getSettings().setAppCacheEnabled(true);
        mWebView.requestFocus();

        mWebView.setWebChromeClient(wcc);
        mWebView.setDownloadListener(dl);
        mWebView.setWebViewClient(wvc);
        mWebView.loadUrl(url);
    }

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

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
        if (requestCode == FILECHOOSER_RESULTCODE) {
            if (null == mUploadMessage)
                return;
            Uri result = intent == null || resultCode != RESULT_OK ? null : intent.getData();
            mUploadMessage.onReceiveValue(result);
            mUploadMessage = null;

        }
    }

    private WebChromeClient wcc = new WebChromeClient() {

        @SuppressWarnings("unused")
        public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
            mUploadMessage = uploadMsg;
            Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
            intent.addCategory(Intent.CATEGORY_OPENABLE);
            intent.setType("image/*");
            startActivityForResult(Intent.createChooser(intent, "完成操作需要使用"), FILECHOOSER_RESULTCODE);

        }

        @SuppressWarnings("unused")
        public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {
            mUploadMessage = uploadMsg;
            Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
            intent.addCategory(Intent.CATEGORY_OPENABLE);
            intent.setType("image/*");
            startActivityForResult(Intent.createChooser(intent, "完成操作需要使用"), FILECHOOSER_RESULTCODE);
        }

        @SuppressWarnings("unused")
        public void openFileChooser(ValueCallback<Uri> uploadMsg) {
            mUploadMessage = uploadMsg;
            Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
            intent.addCategory(Intent.CATEGORY_OPENABLE);
            intent.setType("image/*");
            startActivityForResult(Intent.createChooser(intent, "完成操作需要使用"), FILECHOOSER_RESULTCODE);
        }
        //網頁進度情況
        public void onProgressChanged(WebView view, int newProgress) {
            if (newProgress < 100) {
                mBar.setVisibility(View.VISIBLE);
                mBar.setProgress(newProgress);
            } else {
                mBar.setVisibility(View.GONE);
            }
        };

        public boolean onJsAlert(WebView view, String url, String message, final android.webkit.JsResult result) {
            AlertDialog.Builder b2 = new AlertDialog.Builder(MainActivity.this).setTitle("溫馨提示").setMessage(message).setPositiveButton("確認", new AlertDialog.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    result.confirm();
                }
            });
            b2.setCancelable(false);
            b2.create();
            b2.show();
            return true;
        };

        public boolean onJsPrompt(WebView view, String url, final String message, String defaultValue, JsPromptResult result) {
            // webView.stopLoading();
            // webView.reload();
            // result.confirm(); //如果自己處理js 則最後必須result.confirm
            return false;
        };
    };

openFileChooser方法寫這麼多個就是為了適配不同的版本，需要的朋友們，可以看看。