GPS Check是否启用

Question

我正在制作一个显示纬度值的应用程序，但我已获得所有代码，但我需要一个onPost恢复方法，该方法将检查GPS是否已启用（如果已启用），如果未启用，则它应该可以工作，否则应保留在除非可以启用GPS，否则请进行相同的操作，如果可以的话，请帮助我。

我只需要一个onResume方法和方法来检查GPS是否已启用，这就是要使用onPost简历中的方法，请帮帮我

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main3);

    textView1 = (TextView) findViewById(R.id.location_view);
    button1 = (Button) findViewById(R.id.camera);
    button2 = (Button) findViewById(R.id.upload);
    editText1 = (EditText) findViewById(R.id.remarks);
    imageView11 = (ImageView) findViewById(R.id.image1);

    button1.setOnClickListener(this);
    button2.setOnClickListener(this);

    locationText = (TextView) findViewById(R.id.location_view);

    if (ContextCompat.checkSelfPermission(getApplicationContext(),
            android.Manifest.permission.ACCESS_FINE_LOCATION)
            != PackageManager.PERMISSION_GRANTED && ActivityCompat
            .checkSelfPermission(getApplicationContext(),
                    android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission
                .ACCESS_FINE_LOCATION, android.Manifest.permission.ACCESS_COARSE_LOCATION}, 101);
    }

    getLocation();
}


@Override
public boolean onOptionsItemSelected(@NonNull MenuItem item) {
    switch (item.getItemId()) {
        case R.id.item1:
            Toast.makeText(getApplicationContext(), "Account Clicked", Toast.LENGTH_SHORT).show();
            return true;
        case R.id.item2:
            Toast.makeText(getApplicationContext(), "Account Clicked", Toast.LENGTH_SHORT).show();
            return true;
        case R.id.item3:

            AlertDialog.Builder alerDialogbuilder = new AlertDialog.Builder(Main3Activity.this);
            alerDialogbuilder.setTitle("Confirm Logout");
            alerDialogbuilder.setIcon(R.drawable.ic_error_black_24dp);
            alerDialogbuilder.setMessage("Are You Sure You Want to Logout ");
            alerDialogbuilder.setMessage("Logingout will need id password again");
            alerDialogbuilder.setCancelable(false);
            alerDialogbuilder.setPositiveButton("yes", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialogInterface, int i) {
                    Intent intents = new Intent(Main3Activity.this, MainActivity.class);
                    startActivity(intents);
                    Toast.makeText(getApplicationContext(), "Successfull Logout", Toast.LENGTH_SHORT).show();
                }
            });
            alerDialogbuilder.setNegativeButton("No", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialogInterface, int i) {
                    Toast.makeText(getApplicationContext(), "Logout Canceled", Toast.LENGTH_SHORT).show();
                }
            });
            AlertDialog alertDialog = alerDialogbuilder.create();
            alertDialog.show();
            return true;
        default:
            return super.onOptionsItemSelected(item);
    }
}

private void camera() {
    Intent intents = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    startActivityForResult(intents, CAMERA_REQUEST);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == CAMERA_REQUEST && resultCode == Activity.RESULT_OK) {
        Bitmap photo = (Bitmap) data.getExtras().get("data");
        imageView11.setImageBitmap(photo);
    }
}

private void upload() {
    AlertDialog.Builder alerDialogbuilder = new AlertDialog.Builder(Main3Activity.this);
    alerDialogbuilder.setTitle("Confirm Upload ?");
    alerDialogbuilder.setIcon(R.drawable.ic_error_black_24dp);
    alerDialogbuilder.setMessage("Are You Sure You Want to Upload Data");
    alerDialogbuilder.setCancelable(false);
    alerDialogbuilder.setPositiveButton("yes", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialogInterface, int i) {
            Toast.makeText(getApplicationContext(), "File Uploading...", Toast.LENGTH_SHORT).show();
        }
    });
    alerDialogbuilder.setNegativeButton("No", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialogInterface, int i) {
            Toast.makeText(getApplicationContext(), "Recheck Data", Toast.LENGTH_SHORT).show();
        }
    });
    AlertDialog alertDialog = alerDialogbuilder.create();
    alertDialog.show();
}

@Override
public void onClick(View view) {

    if (view == button1) {
        camera();
    } else if (view == button2) {
        upload();
    }
}

public void getLocation() {
    try {
        locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
        locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 2000, 10, (LocationListener) this);
    } catch (SecurityException e) {
        e.printStackTrace();
    }
}

@Override
public void onLocationChanged(Location location) {

    double lati = location.getLatitude();
    double longi = location.getLongitude();
    locationText.setText("Latitude: " + lati + "\n Longitude: " + longi);

}

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

    Toast.makeText(this, "Please Enable GPS and Internet", Toast.LENGTH_SHORT).show();
}

@Override
public void onProviderEnabled(String s) {

}

@Override
public void onProviderDisabled(String s) {
    AlertDialog.Builder alerDialogbuilder = new AlertDialog.Builder(Main3Activity.this);
    alerDialogbuilder.setTitle("Enable Gps to Continue");
    alerDialogbuilder.setIcon(R.drawable.ic_error_black_24dp);
    alerDialogbuilder.setMessage("If You Want To Enable Gps Go To Settings");
    alerDialogbuilder.setCancelable(false);
    alerDialogbuilder.setPositiveButton("Settings", new DialogInterface.OnClickListener() {

        @Override
        public void onClick(DialogInterface dialogInterface, int i) {

            Intent intent1 = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
            startActivity(intent1);
            Toast.makeText(getApplicationContext(), "Enable Gps..", Toast.LENGTH_SHORT).show();
            finish();
        }
    });


    alerDialogbuilder.setNegativeButton("No", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialogInterface, int i) {
            Toast.makeText(getApplicationContext(), "Uploading Failed,Enable Gps", Toast.LENGTH_SHORT).show();
            Intent intent = new Intent(Main3Activity.this, Main2Activity.class);
            startActivity(intent);
        }
    });
    AlertDialog alertDialog = alerDialogbuilder.create();
    alertDialog.show();
}
}