软件总结

今天总算把体温的软件给做出来了，总的来说，在做的过程中遇到了许多的问题，其中对我来说最大的问题不是代码的问题，而是数据库的问题，在写完代码之后我就开始在网上看怎么打开数据库，于是我就尝试着去打开我的sqlite数据库，结果遇到了各种各样的问题，比如：获取data文件夹需要权限，而弄权限则费了我大半天的时间才弄好。最后我才进入了数据库。在进入了数据库后结果发现自己的地址一栏是英文，也就是定位到国外去了，在那之后我用了半天的时间才将手机与电脑相连，经历了获取手机权限与获取data权限的过程。在最后的下午时间段里，我才终于把这个软件搞出来，虽然这个软件并不复杂，可是这也恰好反映出安卓开发的些许问题，以下是我的代码：

package com.example.myapplication;
import android.Manifest;
import android.app.Activity;
import android.content.ContentValues;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.core.app.ActivityCompat;

import com.baidu.location.BDAbstractLocationListener;
import com.baidu.location.BDLocation;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;

import java.util.Date;
public class MainActivity extends Activity {
    private shujuku shuju;
    public LocationClient myLocationClient = null;
    public MyLocationListener myLocationListener;
    private static final String TAG = "MainActivity";
    private long exitTime = 0; //退出时间变量值
    private TextView text;
    private TextView add;
    private TextView name;
    private TextView tiwen;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        shuju=new shujuku(MainActivity.this,"tiwenapp.db",null,1);
        havePermission();
        registerMyLocationListener();
        text=( TextView)findViewById(R.id.date);
        add=(TextView)findViewById(R.id.address);
        name=( TextView)findViewById(R.id.name);
        tiwen=(TextView)findViewById(R.id.tiwen);
        text.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v){
                Date date = new Date();
                String time = date.toLocaleString();
                text.setText(time);
            }
        });
    }
    private void havePermission() {
        if (ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE)
                != PackageManager.PERMISSION_GRANTED||
                ActivityCompat.checkSelfPermission(MainActivity.this,Manifest.permission.READ_EXTERNAL_STORAGE)
                        != PackageManager.PERMISSION_GRANTED){
            ActivityCompat.requestPermissions(MainActivity.this,new String[]{
                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
                    Manifest.permission.READ_EXTERNAL_STORAGE
            },100);
        }
    }
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        Log.d(TAG, "onRequestPermissionsResult: requestcode"+requestCode
                +"
"+permissions.toString()
                +"
"+grantResults[0]
        );
        if (grantResults[0]!=0){
            Toast.makeText(this, "要开启权限才能用软件哦，不然无法让您更好的体验", Toast.LENGTH_SHORT).show();
            this.finish();
        }
    }
    public void showLocation(View view) {
        startActivityForResult(new Intent(MainActivity.this, ShowLocationActivity.class),0x78);
    }
    public void tibia(View view) {
                String min=name.getText().toString();
                String ti=tiwen.getText().toString();
                String time=text.getText().toString();
                String address=add.getText().toString();
        insertdata(shuju.getReadableDatabase(),min,ti,time,address);
        Intent intent = new Intent();
        intent.setClass(MainActivity.this,Tijiao.class);
        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        startActivity(intent);
    }
private void insertdata(SQLiteDatabase bd,String name,String ti,String time,String address){
        ContentValues v=new ContentValues();
        v.put("name",name);
    v.put("tiwen",ti);
    v.put("date",time);
    v.put("address",address);
    bd.insert("app",null,v);
}
    @Override
    protected void onDestroy() {
        super.onDestroy();
        if(shuju!=null){
            shuju.close();
        }
    }
    private void getLocation() {
        LocationClientOption option = new LocationClientOption();
        option.setScanSpan(1000);
        option.setOpenGps(true);
        option.setLocationNotify(true);
        option.setLocationMode(LocationClientOption.LocationMode.Device_Sensors);
        option.setIgnoreKillProcess(false);
        option.SetIgnoreCacheException(false);
        option.setEnableSimulateGps(false);
        option.setIsNeedAddress(true);
        option.setIsNeedLocationDescribe(true);
        option.setIsNeedLocationPoiList(true);
        myLocationClient.setLocOption(option);
        myLocationClient.start();
    }
    public class MyLocationListener extends BDAbstractLocationListener {
        public void onReceiveLocation(BDLocation location) {
            MyLocationInfo.address = location.getAddrStr();
            MyLocationInfo.poiList = location.getPoiList();
        }
    }
    private void registerMyLocationListener() {
        myLocationClient = new LocationClient(getApplicationContext());
        myLocationListener = new MyLocationListener();
        myLocationClient.registerLocationListener(myLocationListener);
        getLocation();
    }
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
   super.onActivityResult(requestCode,resultCode,data);
   if(requestCode==0x11 && resultCode==0x11){
       Bundle bundle=data.getExtras();
       String date=bundle.getString("data");
       text.setText(date);
     }
        if(requestCode==0x78 && resultCode==0x78){
            Bundle bundle=data.getExtras();
            String date=bundle.getString("address");
            add.setText(date);
        }
    }
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            exit();
            return true;  //拦截返回键
        }
        return super.onKeyDown(keyCode, event);
    }
    public void exit() {
        if ((System.currentTimeMillis() - exitTime) > 2000) {
            Toast.makeText(getApplicationContext(), "再按一次退出程序", Toast.LENGTH_SHORT).show();
            exitTime = System.currentTimeMillis();
        } else {
            finish();
            System.exit(0);
        }
    }
}