場所が変更されたときにXMLデータが更新されない

Question

画面上の特定の情報を更新した後にアプリを構築しています。私はxMLとJavaの両方のコードを追加しました。誰かが私にテキストビューとJavaコードが太字で正しいことを教えてもらえれば分かります。 DoubleとFloatの

XML

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity" android:padding="0dp"> 
    <ImageView android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/imageView" android:layout_alignParentTop="true" android:layout_alignParentStart="true" android:src="@drawable/background" android:scaleType="centerCrop" /> 
    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Hiker's Watch" android:id="@+id/textView" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" android:textSize="30sp" android:textColor="#f3202020" android:layout_marginTop="30dp" /> 

<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Latitude: " android:id="@+id/lat" android:layout_below="@+id/textView" android:layout_centerHorizontal="true" android:layout_marginTop="30dp" android:textSize="20sp" android:textColor="#151515" /> 

<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Longitude:" android:id="@+id/lng" android:layout_below="@+id/lat" android:layout_centerHorizontal="true" android:layout_marginTop="10dp" android:textSize="20sp" android:textColor="#151515" /> 
    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Accuracy: 20.0m" android:id="@+id/accuracy" android:layout_below="@+id/lng" android:layout_centerHorizontal="true" android:layout_marginTop="10dp" android:textSize="20sp" android:textColor="#151515" /> 

<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Speed:" android:id="@+id/speed" android:layout_below="@+id/accuracy" android:layout_centerHorizontal="true" android:layout_marginTop="20dp" android:textSize="20sp" android:textColor="#151515" /> 

<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Bearing: " android:id="@+id/bearing" android:layout_below="@+id/speed" android:layout_centerHorizontal="true" android:layout_marginTop="10dp" android:textSize="20sp" android:textColor="#151515" /> 

<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Altitude:" android:id="@+id/altitude" android:layout_below="@+id/bearing" android:layout_centerHorizontal="true" android:layout_marginTop="20dp" android:textSize="20sp" android:textColor="#151515" /> 

<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Address: \n" android:id="@+id/address" android:layout_below="@+id/altitude" android:layout_centerHorizontal="true" android:layout_marginTop="20dp" android:textSize="20sp" android:textColor="#151515" android:gravity="center_horizontal" /> 

</RelativeLayout> 

Java 

import android.app.Activity; 
import android.content.Context; 
import android.location.Address; 
import android.location.Criteria; 
import android.location.Geocoder; 
import android.location.Location; 
import android.location.LocationListener; 
import android.location.LocationManager; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.widget.TextView; 

import java.io.IOException; 
import java.util.List; 
import java.util.Locale; 

public class MainActivity extends Activity implements LocationListener { 

    LocationManager locationManager; 
    String provider; 

    TextView latTV; 
    TextView lngTV; 
    TextView accuracyTV; 
    TextView speedTV; 
    TextView bearingTV; 
    TextView altitudeTV; 
    TextView addressTV; 

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

     latTV = (TextView) findViewById(R.id.lat); 
     lngTV = (TextView) findViewById(R.id.lng); 
     accuracyTV = (TextView) findViewById(R.id.accuracy); 
     speedTV = (TextView) findViewById(R.id.speed); 
     bearingTV = (TextView) findViewById(R.id.bearing); 
     altitudeTV = (TextView) findViewById(R.id.altitude); 
     addressTV = (TextView) findViewById(R.id.address); 


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

     provider = locationManager.getBestProvider(new Criteria(), false); 

     Location location = locationManager.getLastKnownLocation(provider); 

     onLocationChanged(location); 



    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.menu_main, menu); 
     return true; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 

     //noinspection SimplifiableIfStatement 
     if (id == R.id.action_settings) { 
      return true; 
     } 

     return super.onOptionsItemSelected(item); 
    } 

    @Override 
    protected void onPause() { 
     super.onPause(); 

     locationManager.removeUpdates(this); 

    } 

    @Override 
    protected void onResume() { 
     super.onResume(); 

     locationManager.requestLocationUpdates(provider, 400, 1, this); 

    } 

    @Override 
    public void onLocationChanged(Location location) { 

     Double lat = location.getLatitude(); 
     Double lng = location.getLongitude(); 
     Double alt = location.getAltitude(); 
     Float bearing = location.getBearing(); 
     Float speed = location.getSpeed(); 
     Float accuracy = location.getAccuracy(); 

     Geocoder geocoder = new Geocoder(getApplicationContext(), Locale.getDefault()); 

     try { 
      List<Address> listAddresses = geocoder.getFromLocation(lat, lng, 1); 

      if (listAddresses != null && listAddresses.size() > 0) { 

       Log.i("PlaceInfo", listAddresses.get(0).toString()); 

       String addressHolder = ""; 

       for (int i = 0; i <= listAddresses.get(0).getMaxAddressLineIndex(); i++) { 

        addressHolder += listAddresses.get(0).getAddressLine(i) + "\n"; 

       } 

       addressTV.setText("Address:\n" + addressHolder); 

      } 

     } catch (IOException e) { 
      e.printStackTrace(); 
     } 

     latTV.setText("Latitude: " + lat.toString()); 
     lngTV.setText("Longitude: " + lng.toString()); 
     altitudeTV.setText("Altitude: " + alt.toString() + "m"); 
     bearingTV.setText("Bearing: " + bearing.toString()); 
     speedTV.setText("Speed: " + speed.toString() + "m/s"); 
     accuracyTV.setText("Accuracy: " + accuracy.toString() + "m"); 



    } 

    @Override 
    public void onStatusChanged(String provider, int status, Bundle extras) { 

    } 

    @Override 
    public void onProviderEnabled(String provider) { 

    } 

    @Override 
    public void onProviderDisabled(String provider) { 

    } 
} 

Answer 1

あなたString解析は.setText();内側正しくありません。

修正さ：

latTV.setText("Latitude: " + String.valueOf(lat)); 
lngTV.setText("Longitude: " + String.valueOf(lng)); 
altitudeTV.setText("Altitude: " + String.valueOf(alt) + "m"); 
bearingTV.setText("Bearing: " + Float.toString(bearing)); 
speedTV.setText("Speed: " + Float.toString(speed) + "m/s"); 
accuracyTV.setText("Accuracy: " + Float.toString(accuracy) + "m"); 

Answer 2

あなたはここでFused location api

public class MainActivity extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks, 
     GoogleApiClient.OnConnectionFailedListener, LocationListener { 


    TextView txtOutputLat, txtOutputLon; 
    Location mLastLocation; 
    private GoogleApiClient mGoogleApiClient; 
    private LocationRequest mLocationRequest; 
    String lat, lon; 


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


     txtOutputLat = (TextView) findViewById(R.id.textView); 
     txtOutputLon = (TextView) findViewById(R.id.textView2); 


     buildGoogleApiClient(); 
    } 


    @Override 
    public void onConnected(Bundle bundle) { 


     mLocationRequest = LocationRequest.create(); 
     mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY); 
     mLocationRequest.setInterval(100); // Update location every second 

     LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this); 


     mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
       mGoogleApiClient); 
     if (mLastLocation != null) { 
      lat = String.valueOf(mLastLocation.getLatitude()); 
      lon = String.valueOf(mLastLocation.getLongitude()); 

     } 
     updateUI(); 
    } 

    @Override 
    public void onConnectionSuspended(int i) { 

    } 

    @Override 
    public void onLocationChanged(Location location) { 
     lat = String.valueOf(location.getLatitude()); 
     lon = String.valueOf(location.getLongitude()); 
     //get other relevant data from location like bearing,address 
     updateUI(); 
    } 

    @Override 
    public void onConnectionFailed(ConnectionResult connectionResult) { 
     buildGoogleApiClient(); 
    } 

    synchronized void buildGoogleApiClient() { 
     mGoogleApiClient = new GoogleApiClient.Builder(this) 
       .addConnectionCallbacks(this) 
       .addOnConnectionFailedListener(this) 
       .addApi(LocationServices.API) 
       .build(); 


    } 

    @Override 
    protected void onStart() { 
     super.onStart(); 
     mGoogleApiClient.connect(); 
    } 

    @Override 
    protected void onDestroy() { 
     super.onDestroy(); 
     mGoogleApiClient.disconnect(); 
    } 

    void updateUI() { 
     txtOutputLat.setText(lat); 
     txtOutputLon.setText(lon); 
    } 
} 

を使用する必要がありますが、詳細の例です：Fused location provider APIについてhttp://www.androidwarriors.com/2015/10/fused-location-provider-in-android.html

最善のことは、あなたがおよそlocation更新を心配する必要はないということです最新の正確なlocationと最新のを提供します間隔の後にまたはlocationに変更します。

さらにFused location provider APIについてさらに1件お待ちください。locationはあなたのアンドロイドデバイスのハードウェアに適した最適なものを自動的に選択して、提供しています。