wwwwwww

app/src/main/java/com/oo/eye/db/DbManager.java

 package com.oo.eye.db;
 
 import android.content.Context;
+import android.database.Cursor;
 import android.database.sqlite.SQLiteDatabase;
 
+import com.app.baselibrary.commonUtil.CheckUtil;
+import com.oo.eye.bean.StudentBean;
 import com.oo.eye.gen.DaoMaster;
 import com.oo.eye.gen.DaoSession;
+import com.oo.eye.gen.StudentBeanDao;
+
+import java.util.ArrayList;
+import java.util.List;
 
 /**
  */
@@ -92,5 +99,64 @@ public class DbManager {
         return mDaoMaster;
     }
 
+    /**
+     * 获取班级名称
+     * @param context
+     * @return
+     */
+    public List<String> getClasses(Context context){
+        List<String> classes = new ArrayList<>();
+        Cursor cursor = DbManager.getWritableDatabase(context)
+                .rawQuery("select distinct(CLASSES) FROM STUDENT_BEAN GROUP BY CLASSES",null);
+        if(cursor != null){
+            for(cursor.moveToFirst();!cursor.isAfterLast();cursor.moveToNext()) {
+                String nameColumn = cursor.getString(0);
+                if(!CheckUtil.isEmpty(nameColumn)){
+                    classes.add(nameColumn);
+                }
+            }
+        }
+        return classes;
+    }
+
+    /**
+     * 获取学生
+     * @param context
+     * @param className
+     * @return
+     */
+    public List<StudentBean> getStudents(Context context,String className,boolean isA){
+        List<StudentBean> studentBeans = new ArrayList<>();
+        try {
+            if(!isA) {
+                if (!CheckUtil.isEmpty(className)) {
+                    studentBeans = DbManager.getDaoSession(context).getStudentBeanDao()
+                            .queryBuilder().where(StudentBeanDao.Properties.Classes.eq(className))
+                            .build().list();
+                } else {
+                    studentBeans = DbManager.getDaoSession(context).getStudentBeanDao()
+                            .queryBuilder()
+                            .build().list();
+                }
+            }else{
+                if (!CheckUtil.isEmpty(className)) {
+                    studentBeans = DbManager.getDaoSession(context).getStudentBeanDao()
+                            .queryBuilder().where(StudentBeanDao.Properties.Classes.eq(className),
+                                    StudentBeanDao.Properties.Left_eye.ge(5.0) ,
+                                    StudentBeanDao.Properties.Right_eye.ge(5.0))
+                            .build().list();
+                } else {
+                    studentBeans = DbManager.getDaoSession(context).getStudentBeanDao()
+                            .queryBuilder().where(
+                                    StudentBeanDao.Properties.Left_eye.ge(5.0) ,
+                                    StudentBeanDao.Properties.Right_eye.ge(5.0))
+                            .build().list();
+                }
+            }
+        }catch (Exception e){
+            e.printStackTrace();
+        }
+        return studentBeans;
+    }
 
 }