android liveData更新UI数据

public class ModelBean extends LiveData {
private int flag;
private String time;
private String batteryStr;
private int battery;
//蓝牙连接状态
private int resourceId;
private Boolean isConnected;
private String mDeviceName;
//测量无信号，请重新测量
private double xro;
//数据分析
private List ecgList;
private boolean isInterrupt;
//跳转详情报告
private SUMMARYDATA reportDetail;
private Record record;
private ArrayList drawEcgListCopy;
//后台数据
private ArrayList ecgList2;
public int getFlag() {
return flag;
}
public void setFlag(int flag) {
this.flag = flag;
postValue(this);
}
public String getTime() {
return time;
}
public void setTime(String time) {
this.time = time;
postValue(this);
}
public String getBatteryStr() {