动态手势识别--操作数据库（一）

package com.example.gesture.database; import java.util.ArrayList; import java.util.List; import com.example.gesture.SensorData;//import 包名.类名 import android.content.Context; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; public class OperateDatabase { private CreateDatabase linkedDatabase; private SQLiteDatabase sdb; public OperateDatabase(Context context1) { linkedDatabase = new CreateDatabase(context1);//类CreateDatabase sdb = linkedDatabase.getWritableDatabase(); } /** * 添加sampleCollection数据到t_sampleCollection数据表中 * * */ public void addsampleCollection(List<List<sensordata>> sampleCollection) { int n = sampleCollection.size(); for (int i = 0; i < n; i++) { int m = sampleCollection.get(i).size(); for (int j = 0; j < m; j++) { String sql = "insert into t_sampleCollection(belongId,acc1,acc2,acc3,gyro1,gyro2,gyro3) values('" + i + "','" + samp