解决安卓webview不支持input type=file问题

前端页面中一句话，<input type="file" accept="image/*;capture=camera">，
IOS手机中，可以直接呼起相机和相册；
安卓手机则不行，部分浏览器没问题；


为解决问题，直接上代码；

亲测，华为、小米、三星、360、魅族都可以正常调用摄像头及相册

webview.setWebChromeClient(new WebChromeClient() {    @Override    public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, FileChooserParams fileChooserParams) {        mUploadCallbackAboveL = filePathCallback;        take();        return true;    }    //<3.0    public void openFileChooser(ValueCallback<Uri> uploadMsg) {        mUploadMessage = uploadMsg;        take();    }    //>3.0+    public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {        mUploadMessage = uploadMsg;        take();    }    //>4.1.1    public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {        mUploadMessage = uploadMsg;        take();    }});@Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        if (requestCode == FILECHOOSER_RESULTCODE) {            if (null == mUploadMessage && null == mUploadCallbackAboveL) return;            Uri result = data == null || resultCode != RESULT_OK ? null : data.getData();            if (mUploadCallbackAboveL != null) {                onActivityResultAboveL(requestCode, resultCode, data);            } else if (mUploadMessage != null) {                Log.e("result", result + "");                if (result == null) {                    mUploadMessage.onReceiveValue(imageUri);                    mUploadMessage = null;                    Log.e("imageUri", imageUri + "");                } else {                    mUploadMessage.onReceiveValue(result);                    mUploadMessage = null;                }            }        }    }SuppressWarnings("null")@TargetApi(Build.VERSION_CODES.LOLLIPOP)private void onActivityResultAboveL(int requestCode, int resultCode, Intent data) {    if (requestCode != FILECHOOSER_RESULTCODE || mUploadCallbackAboveL == null) {        return;    }    Uri[] results = null;    if (resultCode == Activity.RESULT_OK) {        if (data == null) {            results = new Uri[]{imageUri};        } else {            String dataString = data.getDataString();            ClipData clipData = data.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)};        }    }    if (results != null) {        mUploadCallbackAboveL.onReceiveValue(results);        mUploadCallbackAboveL = null;    } else {        results = new Uri[]{imageUri};        mUploadCallbackAboveL.onReceiveValue(results);        mUploadCallbackAboveL = null;    }    return;}private void take() {    File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "MyApp");    if (!imageStorageDir.exists()) {        imageStorageDir.mkdirs();    }    File file = new File(imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg");    imageUri = Uri.fromFile(file);    final List<Intent> cameraIntents = new ArrayList<Intent>();    final Intent captureIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);    final PackageManager packageManager = getPackageManager();    final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0);    for (ResolveInfo res : listCam) {        final String packageName = res.activityInfo.packageName;        final Intent i = new Intent(captureIntent);        i.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));        i.setPackage(packageName);        i.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);        cameraIntents.add(i);    }    Intent i = new Intent(Intent.ACTION_GET_CONTENT);    i.addCategory(Intent.CATEGORY_OPENABLE);    i.setType("image/*");    Intent chooserIntent = Intent.createChooser(i, "Image Chooser");    chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, cameraIntents.toArray(new Parcelable[]{}));    startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE);}private ValueCallback<Uri> mUploadMessage;// 表单的数据信息private ValueCallback<Uri[]> mUploadCallbackAboveL;private final static int FILECHOOSER_RESULTCODE = 1;// 表单的结果回调private Uri imageUri;