位置在 android 中不断更新，而不是一次

Posted 2023-04-14

【中文标题】位置在 android 中不断更新，而不是一次

【英文标题】：Location updates constantly in android instead of once

【发布时间】：2021-01-30 17:04:05

【问题描述】：

我正在关注如何获取用户位置的教程，问题是我应该在发送位置时只获取一次位置坐标，而不是无限次，但我一直在获取位置坐标。

只有当他发送位置而不是经常喜欢我时，教程人才会获取位置。 为什么会发生这种情况，我该如何解决？

当用户更改位置时，我只想在日志中获取一次位置数据，而不是无限次。请帮忙。

我正在使用：- android Studio 版本：- 4.0.1

AVD：- 像素 2 API 26

这里是代码：-

public class MainActivity extends AppCompatActivity 

    LocationManager locationManager;
    LocationListener locationListener;

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) 
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);

        if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) 

            if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) 

                locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
            
        
    

    @Override
    protected void onCreate(Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);

        locationListener = new LocationListener() 
            @Override
            public void onLocationChanged(Location location) 
                Log.i("Location",location.toString());
            

            @Override
            public void onStatusChanged(String s, int i, Bundle bundle) 

            

            @Override
            public void onProviderEnabled(String s) 

            

            @Override
            public void onProviderDisabled(String s) 

            
        ;

        if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) 
            ActivityCompat.requestPermissions(this, new String[]Manifest.permission.ACCESS_FINE_LOCATION,1);
         else 
            locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
        
    
 

这是来自 android studio 的 logcat：-

2020-10-16 12:39:46.237 15537-15537/com.example.locationdemo2fortesting I/Location: Location[gps 40.331100,-122.390442 hAcc=20 et=+1d8h27m56s930ms alt=0.0 vAcc=??? sAcc=??? bAcc=??? Bundle[mParcelledData.dataSize=40]]
2020-10-16 12:39:46.240 15537-15537/com.example.locationdemo2fortesting I/Location: Location[gps 40.331100,-122.390442 hAcc=20 et=+1d8h27m56s930ms vel=0.0 bear=0.0 vAcc=??? sAcc=??? bAcc=??? Bundle[mParcelledData.dataSize=40]]
2020-10-16 12:39:47.238 15537-15537/com.example.locationdemo2fortesting I/Location: Location[gps 40.331100,-122.390442 hAcc=20 et=+1d8h27m57s930ms alt=0.0 vAcc=??? sAcc=??? bAcc=??? Bundle[mParcelledData.dataSize=40]]
2020-10-16 12:39:47.243 15537-15537/com.example.locationdemo2fortesting I/Location: Location[gps 40.331100,-122.390442 hAcc=20 et=+1d8h27m57s931ms vel=0.0 bear=0.0 vAcc=??? sAcc=??? bAcc=??? Bundle[mParcelledData.dataSize=40]]
2020-10-16 12:39:48.245 15537-15537/com.example.locationdemo2fortesting I/Location: Location[gps 40.331100,-122.390442 hAcc=20 et=+1d8h27m58s931ms vel=0.0 bear=0.0 vAcc=??? sAcc=??? bAcc=??? Bundle[mParcelledData.dataSize=40]]
2020-10-16 12:39:48.248 15537-15537/com.example.locationdemo2fortesting I/Location: Location[gps 40.331100,-122.390442 hAcc=20 et=+1d8h27m58s928ms alt=0.0 vAcc=??? sAcc=??? bAcc=??? Bundle[mParcelledData.dataSize=40]]
2020-10-16 12:39:49.238 15537-15537/com.example.locationdemo2fortesting I/Location: Location[gps 40.331100,-122.390442 hAcc=20 et=+1d8h27m59s928ms alt=0.0 vAcc=??? sAcc=??? bAcc=??? Bundle[mParcelledData.dataSize=40]]
2020-10-16 12:39:49.241 15537-15537/com.example.locationdemo2fortesting I/Location: Location[gps 40.331100,-122.390442 hAcc=20 et=+1d8h27m59s930ms vel=0.0 bear=0.0 vAcc=??? sAcc=??? bAcc=??? Bundle[mParcelledData.dataSize=40]]
2020-10-16 12:39:50.231 15537-15537/com.example.locationdemo2fortesting I/Location: Location[gps 40.331100,-122.390442 hAcc=20 et=+1d8h28m0s926ms alt=0.0 vAcc=??? sAcc=??? bAcc=??? Bundle[mParcelledData.dataSize=40]]
2020-10-16 12:39:50.235 15537-15537/com.example.locationdemo2fortesting I/Location: Location[gps 40.331100,-122.390442 hAcc=20 et=+1d8h28m0s927ms vel=0.0 bear=0.0 vAcc=??? sAcc=??? bAcc=??? Bundle[mParcelledData.dataSize=40]]
2020-10-16 12:39:51.236 15537-15537/com.example.locationdemo2fortesting I/Location: Location[gps 40.331100,-122.390442 hAcc=20 et=+1d8h28m1s928ms alt=0.0 vAcc=??? sAcc=??? bAcc=??? Bundle[mParcelledData.dataSize=40]]
2020-10-16 12:39:51.243 15537-15537/com.example.locationdemo2fortesting I/Location: Location[gps 40.331100,-122.390442 hAcc=20 et=+1d8h28m1s929ms vel=0.0 bear=0.0 vAcc=??? sAcc=??? bAcc=??? Bundle[mParcelledData.dataSize=40]]
2020-10-16 12:39:52.237 15537-15537/com.example.locationdemo2fortesting I/Location: Location[gps 40.331100,-122.390442 hAcc=20 et=+1d8h28m2s929ms vel=0.0 bear=0.0 vAcc=??? sAcc=??? bAcc=??? Bundle[mParcelledData.dataSize=40]]
2020-10-16 12:39:52.240 15537-15537/com.example.locationdemo2fortesting I/Location: Location[gps 40.331100,-122.390442 hAcc=20 et=+1d8h28m2s928ms alt=0.0 vAcc=??? sAcc=??? bAcc=??? Bundle[mParcelledData.dataSize=40]]
2020-10-16 12:39:52.273 15537-15537/com.example.locationdemo2fortesting I/Location: Location[gps 40.356222,-122.415847 hAcc=20 et=+1d8h28m2s967ms alt=0.0 vAcc=??? sAcc=??? bAcc=??? Bundle[mParcelledData.dataSize=40]]
2020-10-16 12:39:52.277 15537-15537/com.example.locationdemo2fortesting I/Location: Location[gps 40.356222,-122.415847 hAcc=20 et=+1d8h28m2s967ms vel=0.0 bear=0.0 vAcc=??? sAcc=??? bAcc=??? Bundle[mParcelledData.dataSize=40]]
2020-10-16 12:39:53.237 15537-15537/com.example.locationdemo2fortesting I/Location: Location[gps 40.356222,-122.415847 hAcc=20 et=+1d8h28m3s929ms alt=0.0 vAcc=??? sAcc=??? bAcc=??? Bundle[mParcelledData.dataSize=40]]

【参考方案1】：

没有办法做到这一点。您所能做的就是在其上方编写包装器并在值更改时发送位置坐标。

【讨论】：

这不是问题，这是标准行为