SharedPreferences 保存到本地全局调用

 private void readSharedPreferences() {
        SharedPreferences sp = this.getSharedPreferences(
                "UUIDnumber", Context.MODE_PRIVATE);
        String name = sp.getString("uuid_number", "无值");
        Log.d("存储到本地的用户名", name);
    }

    // 写入记录到本地
    private void wrtieSharedPreferences() {
        SharedPreferences shared = this.getSharedPreferences(
                "UUIDnumber", Context.MODE_PRIVATE);
        SharedPreferences.Editor edit = shared.edit();
        s = UUID.randomUUID().toString().replace("-", "");
        edit.putString("uuid_number", s);
        // 提交
        edit.commit();
    }

 case R.id.open:
                readSharedPreferences();
                wrtieSharedPreferences();
                Log.e(TAG, "onClick: " + s);
                Intent i = new Intent(OpenCreditActivity.this, FaceOcrActivity.class);
                startActivity(i);
                break;

 SharedPreferences sp = getActivity().getSharedPreferences(
                "UUIDnumber", Context.MODE_PRIVATE);
        String name = sp.getString("uuid_number", "无值");
        Log.d("存储到本地的用户名", name);
        String key = "对比照" + name + ".JPEG";