日志如下: Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean com.baidu.ocr.sdk.model.AccessToken.hasExpired()' on a null object reference at com.baidu.ocr.sdk.OCR.getToken(OCR.java:600) at com.baidu.ocr.sdk.OCR.recognizeIDCard(OCR.java:348) at com.lgmshare.xyzj.ui.PreEditActivity.recIDCard(PreEditActivity.java:373) at com.lgmshare.xyzj.ui.PreEditActivity.onActivityResult(PreEditActivity.java:354) at android.app.Activity.dispatchActivityResult(Activity.java:6558) at ...