AgentWeb嵌套h5 上傳圖片文件

隨着現在混合開發非常的普遍，很多html界面上會進行圖片和文件等的上傳，界面嵌套進android後，會發現無法調出手機本地圖片，這個時候需要我們主動進入圖庫調用圖片反饋給頁面。主要步驟就是重寫WebChromeClient中的onShowFileChooser方法

當前AgentWeb，或者是原生的webView設置自己寫的WebViewClient

    private ValueCallback<Uri> mValueCallback;
    private ValueCallback<Uri[]> mFilePathCallback;
    private final static int RESULT_CODE = 10000;

 mAgentWeb = AgentWeb.with(this)
                .setAgentWebParent(linWeb, new LinearLayout.LayoutParams(-1, -1))
                .useDefaultIndicator()
                .setWebChromeClient(mWebChromeClient)
                .setWebViewClient(mWebViewClient)
                .interceptUnkownUrl()
                .createAgentWeb()
                .ready()
                .go(url);

下面就是WebViewClient了，目前市面上android版本應該大部分都是5.0以上了，不過爲了保證萬無一失記得要適配多個android版本，所以要寫多個方法

private WebChromeClient mWebChromeClient = new WebChromeClient() {
        @Override
        public void onProgressChanged(WebView view, int newProgress) {
        }
        // 3.0以下版本
        public void openFileChooser(ValueCallback<Uri> valueCallback) {
            mValueCallback = valueCallback;
            openImageActivity();
        }
        //3.0以上版本
        public void openFileChooser(ValueCallback valueCallback, String acceptType) {
            mValueCallback = valueCallback;
            openImageActivity();
        }
        //4.1以上版本
        public void openFileChooser(ValueCallback<Uri> valueCallback, String acceptType,  String capture) {
            mValueCallback = valueCallback;
            openImageActivity();
        }
        // 5.0以上版本  主要版本
        @Override
        public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) {
            mFilePathCallback = filePathCallback;
            openImageActivity();
            return true;
        }

    };
    private void openImageActivity() {
        Intent i = new Intent(Intent.ACTION_GET_CONTENT);
        i.addCategory(Intent.CATEGORY_OPENABLE);
        i.setType("image/*");
        //調起手機圖庫
        startActivityForResult(Intent.createChooser(i, "Image Chooser"),     RESULT_CODE);
    }

    //處理手機返回的圖片
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == RESULT_CODE) { 
            if (null == mValueCallback && null == mFilePathCallback) return;
            Uri result = data == null || resultCode != RESULT_OK ? null : data.getData();
            if (mFilePathCallback != null) {
                onActivityResultAboveL(requestCode, resultCode, data);
            } else if (mValueCallback != null) {
                mValueCallback.onReceiveValue(result);
                mValueCallback = null;
            }
        }
    }



    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    private void onActivityResultAboveL(int requestCode, int resultCode, Intent intent) {
        if (requestCode != RESULT_CODE || mFilePathCallback == null)
            return;
        Uri[] results = null;
        if (resultCode == Activity.RESULT_OK) {
            if (intent != null) {
                String dataString = intent.getDataString();
                ClipData clipData = intent.getClipData();
                if (clipData != null) {
                    results = new Uri[clipData.getItemCount()];
                    for (int i = 0; i < clipData.getItemCount(); i++) {
                        ClipData.Item item = clipData.getItemAt(i);
                        results[i] = item.getUri();
                    }
                }
                if (dataString != null)
                    results = new Uri[]{Uri.parse(dataString)};
            }
        }
        mFilePathCallback.onReceiveValue(results);
        mFilePathCallback = null;
    }

到此應該就能順利上傳圖片了，上傳文件的話，也是類似這種方式。