Android gps位置值不打印

在这段代码中，我想得到经度和纬度，并将它们转换为字符串 在屏幕上使用它 还有短信 那我该怎么处理呢 我应该上新课吗？或者这个代码只是被修改了

我该怎么做才能让它工作 我使用了所有位置的许可证

public class MainActivity extends Activity implements LocationListener  {

    Location location; // location

    LocationManager locationManager;
    public String LatTxt;
    public String LonTxt;
    public Double latitude; // latitude
    public Double longitude; // longitude
    TextView latTextView = (TextView) findViewById(R.id.Latitude_Txt);
    TextView lonTextView = (TextView) findViewById(R.id.Longitude_Txt);
    // The minimum distance to change Updates in meters
    private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters
    // The minimum time between updates in milliseconds
    private static final long MIN_TIME_BW_UPDATES = (long) (1000 * 60 * 0.25); // 0.25
                                                                                // minute

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

        LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        LocationListener locListener = new MyLocationListener();
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES,locListener);

        lonTextView.setText(" " + location.getLongitude());
        latTextView.setText(" " + location.getLatitude());

    }

    @Override
    public void onLocationChanged(Location location) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onProviderDisabled(String provider) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onProviderEnabled(String provider) {
        // TODO Auto-generated method stub
        latitude = location.getLatitude();
        LatTxt = latitude.toString();
        longitude = location.getLongitude();
        LonTxt = longitude.toString();
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        // TODO Auto-generated method stub

    }

}






<TextView
                    android:id="@+id/Latitude_Txt"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:background="@android:color/white"
                    android:gravity="center_horizontal"
                    android:text="Latitude"
                    android:textColor="@android:color/black"
                    android:textSize="16sp" />
            </LinearLayout>

public类MainActivity扩展活动实现LocationListener{
位置；//位置
地点经理地点经理；
公共字符串；
公共字符串LonTxt；
公共双纬度；//纬度
公共双经度；//经度
TextView latTextView=（TextView）findViewById（R.id.Latitude_Txt）；
TextView lonTextView=（TextView）findViewById（R.id.Longitude_Txt）；
//更改更新的最小距离（以米为单位）
私有静态最终长最小距离更改更新=10；//10米
//更新之间的最短时间（以毫秒为单位）
私有静态最终长最小时间更新=（长）（1000*60*0.25）；//0.25
//分钟
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
LocationManager LocationManager=（LocationManager）getSystemService（Context.LOCATION\u服务）；
LocationListener locListener=新建MyLocationListener（）；
locationManager.RequestLocationUpdate（locationManager.GPS\u提供程序、最短时间\u BW\u更新、最短距离\u更改\u更新、LocationListener）；
lonTextView.setText（“+location.getLongitude（））；
latTextView.setText（“+location.getLatitude（））；
}
@凌驾
已更改位置上的公共无效（位置）{
//TODO自动生成的方法存根
}
@凌驾
公共无效onProviderDisabled（字符串提供程序）{
//TODO自动生成的方法存根
}
@凌驾
公共无效onProviderEnabled（字符串提供程序）{
//TODO自动生成的方法存根
纬度=位置。getLatitude（）；
LATXT=纬度.toString（）；
longitude=location.getLongitude（）；
LonTxt=经度.toString（）；
}
@凌驾
public void onStatusChanged（字符串提供程序、int状态、Bundle extra）{
//TODO自动生成的方法存根
}
}

Put

到

您尝试在以下位置打印

location

：

protectedvoid onCreate（Bundle savedInstanceState）

，但

location

未启动

顺便说一句，在行之前添加：

 lonTextView.setText(" " + location.getLongitude());
 latTextView.setText(" " + location.getLatitude());

此代码，用于初始化旧位置

locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES,this); 
Criteria criteria = new Criteria();

locationManager.getLastKnownLocation(provider);
String provider = locationManager.getBestProvider(criteria, false);
location = locationManager.getLastKnownLocation(provider);

并删除您的

requestLocationUpdates

[编辑]

 public class MainActivity extends Activity implements LocationListener  {

Location location; // location

LocationManager locationManager;
public String LatTxt;
public String LonTxt;
public Double latitude; // latitude
public Double longitude; // longitude
TextView latTextView = (TextView) findViewById(R.id.Latitude_Txt);
TextView lonTextView = (TextView) findViewById(R.id.Longitude_Txt);
// The minimum distance to change Updates in meters
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters
// The minimum time between updates in milliseconds
private static final long MIN_TIME_BW_UPDATES = (long) (1000 * 60 * 0.25); // 0.25
                                                                            // minute

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

    LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    LocationListener locListener = this;
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES,locListener);



}

@Override
public void onLocationChanged(Location location) {

    // TODO Auto-generated method stub
    latitude = location.getLatitude();
    LatTxt = latitude.toString();
    longitude = location.getLongitude();
    LonTxt = longitude.toString();

    lonTextView.setText(" " + location.getLongitude());
    latTextView.setText(" " + location.getLatitude());
}

@Override
public void onProviderDisabled(String provider) {
    // TODO Auto-generated method stub

}

@Override
public void onProviderEnabled(String provider) {

}

@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
    // TODO Auto-generated method stub

 }
}

---

当接收到新的GPS坐标时。将调用onLocationChanged函数。您应该在那里执行GPS坐标操作

请参见我的编辑，我已修复您的代码，从提供的中删除所有我很抱歉它仍然崩溃09-12 14:34:52.690:W/ActivityThread（26906）：Application com.example.vehicletrackmaster正在端口8100上等待调试器。。。09-12 14:34:52.700:I/System.out（26906）：发送等待区块09-12 14:34:52.715:I/dalvikvm（26906）：调试器处于活动状态09-12 14:34:52.900:I/System.out（26906）：调试器已连接09-12 14:34:52.905:I/System.out（26906）：等待调试器解决。。。09-12 14:34:53.105:I/System.out（26906）：等待调试器解决…09-12 14:34:53.305:I/System.out（26906）：等待调试器解决。。。09-12 14:34:53.510:I/System.out（26906）：等待调试器解决。。。09-12 14:34:53.710:I/System.out（26906）：等待调试器解决。。。09-12 14:34:53.910:I/System.out（26906）：等待调试器解决。。。09-12 14:34:54.105:I/System.out（26906）：调试器已解决（1323）09-12 14:34:55.645:D/dalvikvm（26906）：threadid=1:撤消后仍挂起（sc=1 dc=1）日志在此txt文件中

locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES,this); 
Criteria criteria = new Criteria();

locationManager.getLastKnownLocation(provider);
String provider = locationManager.getBestProvider(criteria, false);
location = locationManager.getLastKnownLocation(provider);

 public class MainActivity extends Activity implements LocationListener  {

Location location; // location

LocationManager locationManager;
public String LatTxt;
public String LonTxt;
public Double latitude; // latitude
public Double longitude; // longitude
TextView latTextView = (TextView) findViewById(R.id.Latitude_Txt);
TextView lonTextView = (TextView) findViewById(R.id.Longitude_Txt);
// The minimum distance to change Updates in meters
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters
// The minimum time between updates in milliseconds
private static final long MIN_TIME_BW_UPDATES = (long) (1000 * 60 * 0.25); // 0.25
                                                                            // minute

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

    LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    LocationListener locListener = this;
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES,locListener);



}

@Override
public void onLocationChanged(Location location) {

    // TODO Auto-generated method stub
    latitude = location.getLatitude();
    LatTxt = latitude.toString();
    longitude = location.getLongitude();
    LonTxt = longitude.toString();

    lonTextView.setText(" " + location.getLongitude());
    latTextView.setText(" " + location.getLatitude());
}

@Override
public void onProviderDisabled(String provider) {
    // TODO Auto-generated method stub

}

@Override
public void onProviderEnabled(String provider) {

}

@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
    // TODO Auto-generated method stub

 }
}