关于相机拍照获取图片onActivityResult返回data 为null的问题

/**
     * capture new image
     */
    protected void selectPicFromCamera() {
        if (!EaseCommonUtils.isSdcardExist()) {
            Toast.makeText(getActivity(), R.string.sd_card_does_not_exist, Toast.LENGTH_SHORT).show();
            return;
        }

        cameraFile = new File(PathUtil.getInstance().getImagePath(), EMClient.getInstance().getCurrentUser()
                + System.currentTimeMillis() + ".jpg");
        //noinspection ResultOfMethodCallIgnored
        cameraFile.getParentFile().mkdirs();

        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N){
            intent.putExtra(MediaStore.EXTRA_OUTPUT,
                    FileProvider.getUriForFile(getActivity(),"你的包名.fileprovider", cameraFile));
        }else {
            intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(cameraFile));
        }
        startActivityForResult(intent, REQUEST_CODE_CAMERA);

    }

@Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        //xqxhx add  避免data数据为null
        if (data==null){
            return;
        }
        if (resultCode == Activity.RESULT_OK) {
            if (requestCode == REQUEST_CODE_CAMERA) { // capture new image
                if (cameraFile != null && cameraFile.exists()) {
                    sendImageMessage(cameraFile.getAbsolutePath());
                }