当调用GetFieldID来恢复jni中的自定义Java类的成员ID时，卡在奇怪的崩溃上

如何解决当调用GetFieldID来恢复jni中的自定义Java类的成员ID时，卡在奇怪的崩溃上

这是一个自定义的Java类：

package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.graphics.PointF;
import android.graphics.Rect;


public class MainActivity extends AppCompatActivity {
public static class FaceShape {
        public PointF [] faceProfile;
        public PointF [] leftEyebrow;
        public PointF [] rightEyebrow;
        public PointF [] leftEye;
        public PointF [] rightEye;
        public PointF [] nose;
        public PointF [] mouth;
        public PointF [] pupil;

        float confidence;
    }

    public static class TrackedFace {
        public FaceShape faceShape;
        public Rect faceRect;

        public int frameId;
    }
...
}

现在，我想用本机代码恢复TrackedFace的所有成员的字段ID：

jclass clsTrackedFace = env->FindClass("com/example/myapplication/MainActivity$TrackedFace");
jfieldID faceShapeId = env->GetFieldID(clsTrackedFace,"faceShape","Lcom/example/myapplication/MainActivity/FaceShape;");
jfieldID faceRectId = env->GetFieldID(clsTrackedFace,"faceRect","Landroid/graphics/Rect;");

在设备上运行程序时，Android Studio的

logcat显示以下错误：

11-05 21:47:13.232 18792-18792/com.example.myapplication E/art: JNI DETECTED ERROR IN APPLICATION: JNI GetFieldID called with pending exception 'java.lang.NoSuchFieldError' thrown in unknown throw location
11-05 21:47:13.232 18792-18792/com.example.myapplication E/art:     in call to GetFieldID
11-05 21:47:13.232 18792-18792/com.example.myapplication E/art:     from java.lang.String com.example.myapplication.MainActivity.stringFromJNI()
11-05 21:47:13.232 18792-18792/com.example.myapplication E/art: "main" prio=5 tid=1 Runnable
11-05 21:47:13.232 18792-18792/com.example.myapplication E/art:   | group="main" sCount=0 dsCount=0 obj=0x7515afa8 self=0x7f8309a000
11-05 21:47:13.232 18792-18792/com.example.myapplication E/art:   | sysTid=18792 nice=0 cgrp=default sched=0/0 handle=0x7f8711de30
11-05 21:47:13.232 18792-18792/com.example.myapplication E/art:   | state=R schedstat=( 364733924 74412465 219 ) utm=31 stm=5 core=1 HZ=100
11-05 21:47:13.232 18792-18792/com.example.myapplication E/art:   | stack=0x7ffda7a000-0x7ffda7c000 stackSize=8MB
11-05 21:47:13.232 18792-18792/com.example.myapplication E/art:   | held mutexes= "mutator lock"(shared held)
11-05 21:47:13.232 18792-18792/com.example.myapplication E/art:     at com.example.myapplication.MainActivity.stringFromJNI(Native method)
11-05 21:47:13.232 18792-18792/com.example.myapplication E/art:     at com.example.myapplication.MainActivity.onCreate(MainActivity.java:58)

调试器可以帮助我确认是否从该行引发了异常：

jfieldID faceRectId = env->GetFieldID(clsTrackedFace,"Landroid/graphics/Rect;");

并且我注意到 faceShapeId为NULL ，所以我基本上可以确保恢复faceShape字段的字段ID时会出现一些错误，谁能帮帮我？