安卓学习记录（五）——体温表APP.2
一、项目结构
二、源码
1.数据层
db+dao+bean
package com.example.tem.db; import android.content.Context; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteOpenHelper; import androidx.annotation.Nullable; public class DBHelper extends SQLiteOpenHelper{ public DBHelper(@Nullable Context context){ super(context,"temperature",null,3);//库名“temperature” } @Override public void onCreate(SQLiteDatabase db){ db.execSQL("create table info(id INTEGER PRIMARY KEY AUTOINCREMENT,name VARCHAR(50) NOT NULL,sex VARCHAR(20) NOT NULL,date VARCHAR(50) NOT NULL,heat VARCHAR(20) NOT NULL,place CARCHAR(500) NOT NULL)"); //表名“info” } @Override public void onUpgrade(SQLiteDatabase db,int oldVersion,int newVersion){ } }
package com.example.tem.dao; import android.content.ContentValues; import android.content.Context; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import com.example.tem.db.DBHelper; import com.example.tem.bean.TemBean; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List; public class TemDao { private DBHelper helper; public TemDao(Context context){ helper = new DBHelper(context); } public boolean insert(TemBean temBean){//增 SQLiteDatabase db = helper.getReadableDatabase(); Date date0 = new Date(); SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd"); String date = simpleDateFormat.format(date0); ContentValues values = new ContentValues(); values.put("name",temBean.getName()); values.put("sex",temBean.getSex()); values.put("date",date); values.put("heat",temBean.getHeat()); values.put("place",temBean.getPlace()); long insert = db.insert("info",null,values); //System.out.println(temBean.getPlace()); return insert>0; } public boolean update(TemBean temBean){//改 SQLiteDatabase db = helper.getReadableDatabase(); ContentValues values = new ContentValues(); values.put("name",temBean.getName()); values.put("sex",temBean.getSex()); values.put("date",temBean.getDate()); values.put("heat",temBean.getHeat()); values.put("place",temBean.getPlace()); long update = db.update("info",values,"id=?",new String[]{temBean.getId()+""}); System.out.println(temBean.getId()); return update>0; } public List<TemBean> queryAll(){//查 List<TemBean> list = new ArrayList<>(); TemBean bean = null; SQLiteDatabase db = helper.getReadableDatabase(); Cursor c = db.query("info",null,null,null,null,null,null); if(c != null && c.getCount()>0){ list = new ArrayList<>(); while(c.moveToNext()){ bean = new TemBean(); bean.setId(c.getInt(c.getColumnIndex("id"))); bean.setName(c.getString(c.getColumnIndex("name"))); bean.setSex(c.getString(c.getColumnIndex("sex"))); bean.setDate(c.getString(c.getColumnIndex("date"))); bean.setHeat(c.getString(c.getColumnIndex("heat"))); bean.setPlace(c.getString(c.getColumnIndex("place"))); list.add(bean); } } return list; } }
package com.example.tem.bean; import java.io.Serializable; public class TemBean implements Serializable{ public Integer id;//设置id便于对数据进行操作 public String name; public String sex; public String date; public String heat; public String place; public TemBean() { } @Override public String toString() { return "TemBean{" + "id='" + id + ",name='" + name + '\'' + ",sex='" + sex + '\'' + ", date='" + date + '\'' + ", heat='" + heat + '\'' + ", place='" + place + '\'' + '}'; } public Integer getId(){ return id; } public void setId(Integer id){ this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getSex(){ return sex; } public void setSex(String sex){ this.sex = sex; } public String getDate() { return date; } public void setDate(String date) { this.date = date; } public String getHeat() { return heat; } public void setHeat(String heat) { this.heat = heat; } public String getPlace() { return place; } public void setPlace(String place) { this.place = place; } public TemBean(Integer id,String name,String sex,String date,String heat,String place){ this.id = id; this.name = name; this.sex = sex; this.date = date; this.heat = heat; this.place = place; } }
2.适配器
package com.example.tem.adapter; import android.content.Context; import android.content.Intent; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.TextView; import androidx.annotation.NonNull; import androidx.recyclerview.widget.RecyclerView; import com.example.tem.MainActivity; import com.example.tem.R; import com.example.tem.bean.TemBean; import java.util.List; public class Temp extends RecyclerView.Adapter<Temp.TempViewHolder>{ private Context mContext; private List<TemBean> list; public Temp (Context context, List<TemBean> list){ this.mContext=context; this.list=list; } public void setList(List<TemBean> list) { this.list=list; } @NonNull @Override public TempViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) { TempViewHolder holder=new TempViewHolder(LayoutInflater.from(mContext).inflate(R.layout.item_view,parent,false)); return holder; } @Override public void onBindViewHolder(@NonNull TempViewHolder holder, int position) { TemBean temBean=list.get(position); holder.tv_name.setText("姓名:"+temBean.getName()); holder.tv_date.setText(temBean.getDate()); holder.tv_sex.setText("性别:"+temBean.getSex()); holder.tv_heat.setText(temBean.getHeat()); holder.tv_place.setText(temBean.getPlace()); holder.btn_edit.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent=new Intent(); intent.setClass(mContext, MainActivity.class); intent.putExtra("edititem",temBean); mContext.startActivity(intent); } }); } @Override public int getItemCount() { return list==null?0:list.size(); } //绑定单元格空间 class TempViewHolder extends RecyclerView.ViewHolder{ TextView tv_name; TextView tv_date; TextView tv_heat; TextView tv_sex; TextView tv_place; Button btn_edit; public TempViewHolder(@NonNull View itemView) { super(itemView); tv_name=itemView.findViewById(R.id.tv_name); tv_date=itemView.findViewById(R.id.tv_date); tv_sex=itemView.findViewById(R.id.tv_sex); tv_place=itemView.findViewById(R.id.tv_place); tv_heat=itemView.findViewById(R.id.tv_heat); btn_edit=itemView.findViewById(R.id.btn_edit); } } }
3.百度定位相关
package com.example.tem.location; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView; import com.baidu.location.BDAbstractLocationListener; import com.baidu.location.BDLocation; import com.baidu.location.Poi; import com.example.tem.MainActivity; import com.example.tem.R; import com.example.tem.location.LocationService; public class LocationActivity extends MainActivity { private LocationService locationService; private TextView mTextView; private Button button; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_location); mTextView = findViewById(R.id.textview); button = findViewById(R.id.button); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { if (button.getText().toString().equals("添加")) { locationService.start(); } else { locationService.stop(); button.setText("自动定位"); mTextView.setText(""); } } }); locationService = new LocationService(this); // 多个activity // locationService = ((App) getApplication()).locationService; locationService.registerListener(mListener); locationService.setLocationOption(locationService.getDefaultLocationClientOption()); } @Override protected void onDestroy() { super.onDestroy(); locationService.unregisterListener(mListener); //注销掉监听 locationService.stop(); //停止定位服务 } /***** * * 定位结果回调，重写onReceiveLocation方法，可以直接拷贝如下代码到自己工程中修改 * */ private BDAbstractLocationListener mListener = new BDAbstractLocationListener() { @Override public void onReceiveLocation(BDLocation location) { // TODO Auto-generated method stub if (null != location && location.getLocType() != BDLocation.TypeServerError) { //button.setText("停止定位"); StringBuilder sb = new StringBuilder(256); // sb.append("time : "); /** * 时间也可以使用systemClock.elapsedRealtime()方法 获取的是自从开机以来，每次回调的时间； * location.getTime() 是指服务端出本次结果的时间，如果位置不发生变化，则时间不变 */ // sb.append(location.getTime()); sb.append("\nlocType : ");// 定位类型 sb.append(location.getLocType()); sb.append("\nlocType description : ");// *****对应的定位类型说明***** sb.append(location.getLocTypeDescription()); // sb.append("\nlatitude : ");// 纬度 // sb.append(location.getLatitude()); // sb.append("\nlontitude : ");// 经度 // sb.append(location.getLongitude()); // sb.append("\nradius : ");// 半径 // sb.append(location.getRadius()); // sb.append("\nCountryCode : ");// 国家码 // sb.append(location.getCountryCode()); // sb.append("\nCountry : ");// 国家名称 // sb.append(location.getCountry()); // sb.append("\ncitycode : ");// 城市编码 // sb.append(location.getCityCode()); // sb.append("\ncity : ");// 城市 // sb.append(location.getCity()); // sb.append("\nDistrict : ");// 区 // sb.append(location.getDistrict()); // sb.append("\nStreet : ");// 街道 sb.append(location.getStreet()); sb.append("\naddr : ");// 地址信息 sb.append(location.getAddrStr()); // sb.append("\nUserIndoorState: ");// *****返回用户室内外判断结果***** // sb.append(location.getUserIndoorState()); // sb.append("\nDirection(not all devices have value): "); // sb.append(location.getDirection());// 方向 sb.append("\nlocationdescribe: "); sb.append(location.getLocationDescribe());// 位置语义化信息 // sb.append("\nPoi: ");// POI信息 // if (location.getPoiList() != null && !location.getPoiList().isEmpty()) { // for (int i = 0; i < location.getPoiList().size(); i++) { // Poi poi = (Poi) location.getPoiList().get(i); // sb.append(poi.getName() + ";"); // } // } if (location.getLocType() == BDLocation.TypeGpsLocation) {// GPS定位结果 sb.append("\nspeed : "); sb.append(location.getSpeed());// 速度 单位：km/h sb.append("\nsatellite : "); sb.append(location.getSatelliteNumber());// 卫星数目 sb.append("\nheight : "); sb.append(location.getAltitude());// 海拔高度 单位：米 sb.append("\ngps status : "); sb.append(location.getGpsAccuracyStatus());// *****gps质量判断***** sb.append("\ndescribe : "); sb.append("gps定位成功"); } else if (location.getLocType() == BDLocation.TypeNetWorkLocation) {// 网络定位结果 // 运营商信息 if (location.hasAltitude()) {// *****如果有海拔高度***** sb.append("\nheight : "); sb.append(location.getAltitude());// 单位：米 } sb.append("\noperationers : ");// 运营商信息 sb.append(location.getOperators()); sb.append("\ndescribe : "); sb.append("网络定位成功"); } else if (location.getLocType() == BDLocation.TypeOffLineLocation) {// 离线定位结果 sb.append("\ndescribe : "); sb.append("离线定位成功，离线定位结果也是有效的"); } else if (location.getLocType() == BDLocation.TypeServerError) { sb.append("\ndescribe : "); sb.append("服务端网络定位失败，可以反馈IMEI号和大体定位时间到loc-bugs@baidu.com，会有人追查原因"); } else if (location.getLocType() == BDLocation.TypeNetWorkException) { sb.append("\ndescribe : "); sb.append("网络不同导致定位失败，请检查网络是否通畅"); } else if (location.getLocType() == BDLocation.TypeCriteriaException) { sb.append("\ndescribe : "); sb.append("无法获取有效定位依据导致定位失败，一般是由于手机的原因，处于飞行模式下一般会造成这种结果，可以试着重启手机"); } logMsg(sb.toString()); } } }; /** * 显示请求字符串 */ public void logMsg(final String str) { try { new Thread(new Runnable() { @Override public void run() { mTextView.post(new Runnable() { @Override public void run() { mTextView.setText(str); } }); } }).start(); } catch (Exception e) { e.printStackTrace(); } } }
package com.example.tem.location; import android.content.Context; import com.baidu.location.BDAbstractLocationListener; import com.baidu.location.LocationClient; import com.baidu.location.LocationClientOption; import com.baidu.location.LocationClientOption.LocationMode; public class LocationService { private LocationClient client = null; private LocationClientOption mOption,DIYoption; private Object objLock = new Object(); public LocationService(Context locationContext){ synchronized (objLock) { if(client == null){ client = new LocationClient(locationContext); client.setLocOption(getDefaultLocationClientOption()); } } } // 注册 public boolean registerListener(BDAbstractLocationListener listener){ boolean isSuccess = false; if(listener != null){ client.registerLocationListener(listener); isSuccess = true; } return isSuccess; } // 注销 public void unregisterListener(BDAbstractLocationListener listener){ if(listener != null){ client.unRegisterLocationListener(listener); } } //设置配置 public boolean setLocationOption(LocationClientOption option){ boolean isSuccess = false; if(option != null){ if(client.isStarted()) client.stop(); DIYoption = option; client.setLocOption(option); } return isSuccess; } //默认Option设置 public LocationClientOption getDefaultLocationClientOption(){ if(mOption == null){ mOption = new LocationClientOption(); mOption.setLocationMode(LocationMode.Hight_Accuracy);//可选，默认高精度，设置定位模式，高精度，低功耗，仅设备 mOption.setCoorType("bd09ll");//可选，默认gcj02，设置返回的定位结果坐标系，如果配合百度地图使用，建议设置为bd09ll; mOption.setScanSpan(3000);//可选，默认0，即仅定位一次，设置发起连续定位请求的间隔需要大于等于1000ms才是有效的 mOption.setIsNeedAddress(true);//可选，设置是否需要地址信息，默认不需要 mOption.setIsNeedLocationDescribe(true);//可选，设置是否需要地址描述 mOption.setNeedDeviceDirect(false);//可选，设置是否需要设备方向结果 mOption.setLocationNotify(false);//可选，默认false，设置是否当gps有效时按照1S1次频率输出GPS结果 mOption.setIgnoreKillProcess(true);//可选，默认true，定位SDK内部是一个SERVICE，并放到了独立进程，设置是否在stop的时候杀死这个进程，默认不杀死 mOption.setIsNeedLocationDescribe(true);//可选，默认false，设置是否需要位置语义化结果，可以在BDLocation.getLocationDescribe里得到，结果类似于“在北京天安门附近” mOption.setIsNeedLocationPoiList(true);//可选，默认false，设置是否需要POI结果，可以在BDLocation.getPoiList里得到 mOption.SetIgnoreCacheException(false);//可选，默认false，设置是否收集CRASH信息，默认收集 mOption.setOpenGps(true);//可选，默认false，设置是否开启Gps定位 mOption.setIsNeedAltitude(false);//可选，默认false，设置定位时是否需要海拔信息，默认不需要，除基础定位版本都可用 } return mOption; } //自定义Option设置 public LocationClientOption getOption(){ if(DIYoption == null) { DIYoption = new LocationClientOption(); } return DIYoption; } public void start(){ synchronized (objLock) { if(client != null && !client.isStarted()){ client.start(); } } } public void stop(){ synchronized (objLock) { if(client != null && client.isStarted()){ client.stop(); } } } public boolean isStart() { return client.isStarted(); } public boolean requestHotSpotState(){ return client.requestHotSpotState(); } }
4.布局
<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <solid android:color="#808080"> </solid> <size android:height="1dp"></size> </shape>
<?xml version="1.0" encoding="utf-8"?> <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".IndexActivity" android:background="@drawable/background"> <Button android:id="@+id/btn_add" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="1dp" android:layout_marginEnd="3dp" android:layout_marginRight="3dp" android:text="添加" android:background="@drawable/btn_right" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintTop_toTopOf="parent" /> <Button android:id="@+id/btn_back" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginStart="3dp" android:layout_marginLeft="3dp" android:layout_marginTop="1dp" android:text="退出" android:background="@drawable/btn_left" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" /> <TextView android:id="@+id/textView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginStart="85dp" android:layout_marginLeft="85dp" android:layout_marginTop="6dp" android:layout_marginEnd="85dp" android:layout_marginRight="85dp" android:text="体温统计" android:textSize="30dp" android:textColor="#F44336" app:layout_constraintEnd_toStartOf="@+id/btn_add" app:layout_constraintStart_toEndOf="@+id/btn_back" app:layout_constraintTop_toTopOf="parent" /> <androidx.constraintlayout.widget.Guideline android:id="@+id/guideline" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" app:layout_constraintGuide_begin="56dp" /> <androidx.recyclerview.widget.RecyclerView android:id="@+id/rec" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_marginTop="60dp" app:layout_constraintTop_toTopOf="parent" tools:layout_editor_absoluteX="17dp" /> </androidx.constraintlayout.widget.ConstraintLayout>
<?xml version="1.0" encoding="utf-8"?> <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".location.LocationActivity"> <TextView android:id="@+id/textview" android:layout_width="wrap_content" android:layout_height="wrap_content" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" /> <Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="打开定位" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" /> </androidx.constraintlayout.widget.ConstraintLayout>
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:background="@drawable/background"> <LinearLayout android:id="@+id/LinearLayout1" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_above="@+id/LinearLayout2" android:layout_marginBottom="48dp" android:gravity="center" android:orientation="horizontal"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="日期：" android:textColor="@color/black" android:textSize="20sp" /> <TextView android:id="@+id/tv_date" android:layout_width="220dp" android:layout_height="wrap_content" android:textSize="20sp" android:textColor="@color/black" /> </LinearLayout> <LinearLayout android:id="@+id/LinearLayout2" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_above="@+id/LinearLayout3" android:layout_marginBottom="48dp" android:gravity="center" android:orientation="horizontal"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="姓名：" android:textColor="@color/black" android:textSize="20sp" /> <EditText android:id="@+id/et_name" android:layout_width="220dp" android:layout_height="wrap_content" android:hint="请输入姓名" android:textColorHint="#D2E7F8" /> </LinearLayout> <LinearLayout android:id="@+id/LinearLayout3" android:layout_width="match_parent" android:layout_height="30dp" android:layout_above="@+id/LinearLayout4" android:layout_marginBottom="48dp" android:gravity="center"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="性别：" android:textColor="@color/black" android:textSize="20sp" /> <RadioGroup android:id="@+id/rg_sex" android:layout_width="220dp" android:layout_height="wrap_content" android:orientation="horizontal"> <RadioButton android:id="@+id/rb_boy" android:layout_width="88dp" android:layout_height="wrap_content" android:text="男" /> <RadioButton android:id="@+id/rb_girl" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="女" /> </RadioGroup> </LinearLayout> <LinearLayout android:id="@+id/LinearLayout4" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_above="@+id/LinearLayout5" android:layout_marginBottom="48dp" android:gravity="center" android:orientation="horizontal"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="体温：" android:textColor="@color/black" android:textSize="20sp" /> <EditText android:id="@+id/et_heat" android:layout_width="220dp" android:layout_height="wrap_content" android:hint="请输入当前体温" android:textColorHint="#D2E7F8"/> </LinearLayout> <LinearLayout android:id="@+id/LinearLayout5" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_above="@+id/LinearLayout6" android:layout_marginBottom="48dp" android:gravity="center" android:orientation="horizontal"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="地点：" android:textColor="@color/black" android:textSize="20sp" /> <EditText android:id="@+id/et_place" android:layout_width="220dp" android:layout_height="wrap_content" android:hint="手动输入或点击自动定位" android:textColorHint="#D2E7F8"/> </LinearLayout> <LinearLayout android:id="@+id/LinearLayout8" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_above="@+id/LinearLayout6" android:layout_marginBottom="10dp" android:gravity="center" android:orientation="horizontal"> <Button android:id="@+id/btn_adr" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:text="获取定位" /> </LinearLayout> <LinearLayout android:id="@+id/LinearLayout6" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_marginBottom="80dp" android:gravity="center"> <Button android:id="@+id/btn_submit" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="完成" /> </LinearLayout> <LinearLayout android:id="@+id/LinearLayout7" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_above="@+id/LinearLayout1" android:layout_marginBottom="50dp" android:gravity="center" android:orientation="vertical"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="体温填报" android:textStyle="bold" android:textColor="@color/black" android:textSize="20sp" /> </LinearLayout> <Button android:id="@+id/btn_back" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="返回" /> </RelativeLayout>
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> </LinearLayout>
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:layout_weight="1" android:orientation="vertical" > <TextView android:id="@+id/tv_date" android:textSize="15sp" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="日期" android:textStyle="bold" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <TextView android:id="@+id/tv_name" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:textStyle="bold" android:text="姓名：" /> <TextView android:id="@+id/tv_sex" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:textStyle="bold" android:text="性别" /> <TextView android:id="@+id/tv_heat" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:textStyle="bold" android:text="体温" /> </LinearLayout> <TextView android:id="@+id/tv_place" android:layout_width="300dp" android:layout_height="wrap_content" android:layout_weight="1" android:textStyle="bold" android:text="地点" /> </LinearLayout> <Button android:id="@+id/btn_edit" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="编辑" /> </LinearLayout>
效果图：
遇到的几个问题：
1.在gradle的时候没有报错，但是调试就会闪退
（1）如果是打开软件就闪退，可能是初始布局有问题
（2）如果是点击某个按钮有问题，可能是跟按钮触发相应的语句有问题
2.与数据库有关的问题
（1）数据库为null，这个在gradle也不会报错，而且as的编辑器也没有报错
通过仔细检查，发现bean里写错了
可以发现虽然没有报错，但是‘sex’是灰色的，也就是没有用上，以后会注意这种问题，不一定标红线才是报错
（2）使用正常，但是name始终显示的是date
这个花了好久才发现在哪出了问题
name、date、sex这三个位置反了
因为前一个问题写了，sex获取有问题，这导致了sex为null。位置写反了，这导致了name获取了date，而date是自动获取不是手动输入的，最终导致了姓名一栏始终显示的是日期，而日期却还是正确日期
这个地方几个错误叠加，反而没看出来错误的本质，我之前一直以为是name一栏写成了date，检查后发现setText()写的并没有问题，
花了好久才发现原来是数据库这边位置反了。
GitHub上完整结构：https://github.com/Arisf0617/Android
有几个文件上传不进去，不知道是不是我的方法有问题
