步骤

1.在build.gradle 中引入包

implementation 'org.litepal.android:core:1.6.1'

2.在应用的Application 中使用LitePalApplication

3.新建AirBean类

package com.maxus.smartscene.beans;import org.litepal.crud.DataSupport;public class AirBean extends DataSupport {private int airTemp;private int airFanLevel;private int airFanDirection;private String timeDate;private String modeName;public int getAirTemp() {return airTemp;}public void setAirTemp(int airTemp) {this.airTemp = airTemp;}public int getAirFanLevel() {return airFanLevel;}public void setAirFanLevel(int airFanLevel) {this.airFanLevel = airFanLevel;}public int getAirFanDirection() {return airFanDirection;}public void setAirFanDirection(int airFanDirection) {this.airFanDirection = airFanDirection;}public String getTimeDate() {return timeDate;}public void setTimeDate(String timeDate) {this.timeDate = timeDate;}public String getModeName() {return modeName;}public void setModeName(String modeName) {this.modeName = modeName;}@Overridepublic String toString() {return "AirBean{" +"airTemp=" + airTemp +", airFanLevel=" + airFanLevel +", airFanDirection=" + airFanDirection +", timeDate='" + timeDate + '\'' +", modeName='" + modeName + '\'' +'}';}
}

4.在assets中建立litepal.xml，内容如下（AirBean的路径就是你需要操作数据实体类的全路径，上面黄色部分）

5.初始化

LitePal.getDatabase();//相当于调用onCreate()或者onUpgrade()

6.相关使用方法

 private void addBean() {
//        AirBean airBean = new AirBean();
//        airBean.setAirTemp(airTemp++);
//        airBean.setAirFanLevel(3);
//        airBean.setAirFanDirection(4);
//        airBean.save();
//
//    }
//
//    private void modifyBean() {
//        AirBean airBean = new AirBean();
//        airBean.setAirTemp(18);
//        airBean.saveOrUpdate("airTemp=?", "28");
//        // airBean.updateAll("airTemp=? and author=?","Android Studying","G");
//    }
//
//    private void deleteBean() {
//        DataSupport.deleteAll(AirBean.class, "airTempairBeans=DataSupport.where("airTemp>?","20").find(AirBean.class);
//
//        //List airBeans=DataSupport.select("airTemp=15").find(AirBean.class);
//        Log.d("AirBean", "size===" + airBeans.size());
//        for (int i = 0; i