LocationListener
を使用してGPS速度を取得しようとしています。LocationListenerに速度の更新がありません
最初にアプリを起動するときに許可を求めます。許可が与えられ、「onLocationChanged()」はトーストをすぐに表示しますが、もう一度表示しません。
私は自分の携帯電話でロケーションを有効にしています。 しかし、私はこれ以上位置情報を更新しません。
私のコードをすべてダンプして申し訳ありませんが、何を表示するのかは分かりません。
私がここで紛失していることを知っている人はいますか? "onLocationChanged()"
package com.example.username.yaddayadda;
import android.Manifest;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationManager;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
import android.location.GpsStatus;
import android.location.LocationListener;
import android.location.Location;
import android.widget.Toast;
import java.util.Formatter;
import java.util.Locale;
@TargetApi(23)
public class MainActivity extends Activity implements LocationListener{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
try {
if (checkIfPermissionIsGranted()){
Toast toast = Toast.makeText(getApplicationContext(), "Permission is granted for fine and coarse location", Toast.LENGTH_LONG);
toast.show();
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, this);
}
else {
ActivityCompat.requestPermissions(this, new String[] {
Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.ACCESS_COARSE_LOCATION },
1);
if(checkIfPermissionIsGranted()){
Toast toast = Toast.makeText(getApplicationContext(), "Permission was granted for fine and coarse location", Toast.LENGTH_LONG);
toast.show();
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, this);
} else {
Toast toast = Toast.makeText(getApplicationContext(), "Permission was denied for fine and coarse location", Toast.LENGTH_LONG);
toast.show();
}
}
} catch(SecurityException e){
Context context = getApplicationContext();
CharSequence text = "Got exception: \n" + e.getMessage();
int duration = Toast.LENGTH_LONG;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
}
this.onLocationChanged(null);
}
private boolean checkIfPermissionIsGranted(){
return (ContextCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED
&& ContextCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED);
}
@Override
public void onLocationChanged(Location location) {
TextView txt = (TextView) this.findViewById(R.id.txtCurrentSpeed);
Toast toast = Toast.makeText(getApplicationContext(), "onLocationChanged()", Toast.LENGTH_SHORT);
toast.show();
if(location==null){
txt.setText("-.- m/s");
}
else {
if(location.hasSpeed()){
float nCurrentSpeed = location.getSpeed();
txt.setText(nCurrentSpeed + " m/s");
} else {
txt.setText("0.0 m/s");
}
}
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
Toast toast = Toast.makeText(getApplicationContext(), "onStatusChanged()", Toast.LENGTH_SHORT);
toast.show();
}
@Override
public void onProviderEnabled(String provider) {
Toast toast = Toast.makeText(getApplicationContext(), "onProviderEnabled()", Toast.LENGTH_SHORT);
toast.show();
}
@Override
public void onProviderDisabled(String provider) {
Toast toast = Toast.makeText(getApplicationContext(), "onProviderdisabled()", Toast.LENGTH_SHORT);
toast.show();
}
}
ありがとうございます! onRequestPermissionsResultは私が必要としていたものでした! – Starstepper
@Starstepper私は、私は、ハッピーコーディングを助けることができるとうれしい –