-1
この質問は何度もここに頼まれ、私はすべての答えを試みたが、それらのどれも働きました。 私はこのエラーに遭遇しています。 Mapsactivity：エラー膨張クラスsupportMapFragmentとフラグメントとfragmentactivity
package com.example.gio.autostop;
import android.Manifest;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Geocoder;
import android.location.Location;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.toolbox.Volley;
import com.google.android.gms.location.LocationListener;
import android.location.LocationManager;
import android.os.Build;
import android.provider.Settings;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.support.v4.app.FragmentManager;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.net.NetworkInterface;
import java.text.DateFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
import java.util.List;
public class MapsActivity extends FragmentActivity implements LocationListener,
GoogleApiClient.OnConnectionFailedListener, OnMapReadyCallback, GoogleMap.OnMyLocationButtonClickListener,
GoogleApiClient.ConnectionCallbacks {
public int permissionRequestCounter;
public GoogleApiClient mGoogleApiClient;
public Boolean startedLocationUpdate;
public LocationRequest locationRequest;
public Location mCurrentLocation;
public LocationManager mLocationManager;
public final static int MILISECONDS_PER_SECOND = 1000;
public final static int REQUEST_FINE_LOCATION = 0;
public final static int MINUTE = 60 * MILISECONDS_PER_SECOND;
protected String mLastUpdateTime;
protected final static String REQUESTING_LOCATION_UPDATES_KEY = "requesting-location-updates-key";
protected final static String LOCATION_KEY = "location-key";
protected static final String ADDRESS_REQUESTED_KEY = "address-request-pending";
protected static final String LOCATION_ADDRESS_KEY = "location-address";
protected static final String TAG = "main-activity";
public address_fragment address_fragment;
private GoogleMap mMap;// Might be null if Google Play services APK is not available.
private Button checkInButton,checkOutButton;
private ArrayList<Marker> markerCollection = new ArrayList<>();
private Marker markerForDeletion;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
setUpMapIfNeeded();
checkInButton = (Button) findViewById(R.id.button2);
checkOutButton=(Button)findViewById(R.id.button3);
SupportMapFragment mapFragment =
(SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
address_fragment address_fragment=(address_fragment)getSupportFragmentManager().findFragmentById(R.id.address_fragment);
address_fragment.setMapsActivity(this);
startedLocationUpdate = false;
permissionRequestCounter = 0;
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
locationRequest = new LocationRequest();
locationRequest.setInterval(MINUTE);
locationRequest.setFastestInterval(15 * MILISECONDS_PER_SECOND);
locationRequest.setPriority(com.google.android.gms.location.LocationRequest.PRIORITY_HIGH_ACCURACY);
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
checkGps();
}
deviceUniqueNumber();
updateValuesFromBundle(savedInstanceState);
checkInButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
checkInCurrentPosition();
checkInButton.setClickable(false);
checkOutButton.setClickable(true);
}
});
checkOutButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
deletePosition();
markerForDeletion.remove();
checkOutButton.setClickable(false);
checkInButton.setClickable(true);
}
});
checkOutButton.setClickable(false);
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Log.i(TAG, "Connection failed: ConnectionResult.getErrorCode() = " + connectionResult.getErrorCode());
}
@Override
protected void onStart() {
super.onStart();
mGoogleApiClient.connect();
}
@Override
protected void onResume() {
super.onResume();
setUpMapIfNeeded();
if (mGoogleApiClient.isConnected() && !startedLocationUpdate)
startLocationUpdates();
}
@Override
public void onConnected(Bundle bundle) {
if (!startedLocationUpdate)
startLocationUpdates();
if (mCurrentLocation != null) {
if (!Geocoder.isPresent()) {
Toast.makeText(this, R.string.no_geocoder_available, Toast.LENGTH_SHORT).show();
return;
}
address_fragment gettingAddressFragment=(address_fragment)getSupportFragmentManager().findFragmentById(R.id.map);
if (gettingAddressFragment.mAddressRequested) {
gettingAddressFragment.startIntentService();
}
}
}
@Override
public void onConnectionSuspended(int i) {
mGoogleApiClient.connect();
}
@Override
protected void onStop() {
super.onStop();
mGoogleApiClient.disconnect();
}
private void setUpMapIfNeeded() {
// Do a null check to confirm that we have not already instantiated the map.
if (mMap == null) {
// Try to obtain the map from the SupportMapFragment.
mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
.getMap();
// Check if we were successful in obtaining the map.
if (mMap != null) {
setUpMap();
}
}
}
protected void stopLocationUpdates() {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
startedLocationUpdate = false;
}
@Override
protected void onPause() {
super.onPause();
if (mGoogleApiClient.isConnected() && startedLocationUpdate)
stopLocationUpdates();
}
private void startLocationUpdates() {
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.LOLLIPOP) {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, locationRequest, MapsActivity.this);
startedLocationUpdate = true;
} else {
if (permissionRequestCounter == 0) {
requestPermissions(new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, REQUEST_FINE_LOCATION);
permissionRequestCounter++;
}
}
}
}
@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
mMap.setOnMyLocationButtonClickListener(this);
enableMyLocation();
}
public void enableMyLocation() {
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.LOLLIPOP) {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
// Permission to access the location is missing.
if (permissionRequestCounter == 0) {
requestPermissions(new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, REQUEST_FINE_LOCATION);
permissionRequestCounter++;
}
} else if (mMap != null) {
// Access to the location has been granted to the app.
mMap.setMyLocationEnabled(true);
}
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
switch (requestCode) {
case REQUEST_FINE_LOCATION: {
if (grantResults.length == 1
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
enableMyLocation();
checkGps();
} else {
Toast.makeText(MapsActivity.this, "Permission was blocked", Toast.LENGTH_SHORT).show();
}
}
}
}
@Override
public boolean onMyLocationButtonClick() {
checkGps();
return false;
}
public void checkGps() {
final LocationManager manager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
if (!manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
buildAlertMessageNoGps();
}
}
@Override
public void onLocationChanged(Location location) {
mCurrentLocation = location;
mLastUpdateTime = DateFormat.getTimeInstance().format(new Date());
address_fragment.fetchAddressHandler();
}
private void setUpMap() {
Response.Listener<String> responseListener = new Response.Listener<String>() {
@Override
public void onResponse(String s) {
try {
JSONObject jsonResponse = new JSONObject(s);
boolean success = jsonResponse.getBoolean("success");
if (success) {
JSONArray jsonArray = jsonResponse.getJSONArray("data");
JSONObject jsonObject;
for (int i = 0; i < jsonArray.length(); i++) {
jsonObject = jsonArray.getJSONObject(i);
String mac = jsonObject.getString("mac");
String android_id = jsonObject.getString("android_id");
Double latitude = jsonObject.getDouble("latitude");
Double longitude = jsonObject.getDouble("longitude");
if (!isMarkerOnArray(markerCollection, latitude, longitude))
markerCollection.add(mMap.addMarker(new MarkerOptions().position(new LatLng(latitude, longitude))));
}
} else {
AlertDialog.Builder builder = new AlertDialog.Builder(MapsActivity.this);
builder.setMessage("Downloading position failed")
.setNegativeButton("retry", null)
.create()
.show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
};
DownloadPosition downloadPosition = new DownloadPosition(responseListener);
RequestQueue queue = Volley.newRequestQueue(MapsActivity.this);
queue.add(downloadPosition);
}
private boolean isMarkerOnArray(ArrayList<Marker> array, Double Latitude, Double Longitude) {
Marker current;
for (int c = 0; c < array.size(); c++) {
current = array.get(c);
if ((current.getPosition().latitude == Latitude) && (current.getPosition().longitude == Longitude))
return true;
}
return false;
}
private void buildAlertMessageNoGps() {
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("Your GPS seems to be disabled, do you want to enable it?")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(@SuppressWarnings("unused") final DialogInterface dialog, @SuppressWarnings("unused") final int id) {
startActivity(new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS));
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(final DialogInterface dialog, @SuppressWarnings("unused") final int id) {
dialog.cancel();
}
});
final AlertDialog alert = builder.create();
alert.show();
}
@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
savedInstanceState.putBoolean(REQUESTING_LOCATION_UPDATES_KEY, startedLocationUpdate);
savedInstanceState.putParcelable(LOCATION_KEY, mCurrentLocation);
savedInstanceState.putBoolean(ADDRESS_REQUESTED_KEY, address_fragment.mAddressRequested);
savedInstanceState.putString(LOCATION_ADDRESS_KEY, address_fragment.mAddressOutput);
super.onSaveInstanceState(savedInstanceState);
}
private void updateValuesFromBundle(Bundle savedInstanceState) {
if (savedInstanceState != null) {
if (savedInstanceState.keySet().contains(REQUESTING_LOCATION_UPDATES_KEY))
startedLocationUpdate = savedInstanceState.getBoolean(REQUESTING_LOCATION_UPDATES_KEY);
if (savedInstanceState.keySet().contains(LOCATION_KEY))
mCurrentLocation = savedInstanceState.getParcelable(LOCATION_KEY);
if (savedInstanceState.keySet().contains(ADDRESS_REQUESTED_KEY)) {
address_fragment.mAddressRequested = savedInstanceState.getBoolean(ADDRESS_REQUESTED_KEY);
}
if (savedInstanceState.keySet().contains(LOCATION_ADDRESS_KEY)) {
address_fragment.mAddressOutput = savedInstanceState.getString(LOCATION_ADDRESS_KEY);
address_fragment.displayAddressOutput();
}
}
}
public void checkInCurrentPosition() {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
mLocationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
Location locationGPS = mLocationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
Location locationNet = mLocationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
Location location;
long GPSLocationTime = 0;
if (null != locationGPS) { GPSLocationTime = locationGPS.getTime(); }
long NetLocationTime = 0;
if (null != locationNet) {
NetLocationTime = locationNet.getTime();
}
if (0 < GPSLocationTime - NetLocationTime) {
location=locationGPS;
}
else {
location=locationNet;
}
LatLng newLatLng = new LatLng(location.getLatitude(), location.getLongitude());
markerForDeletion=mMap.addMarker(new MarkerOptions().position(newLatLng).title(newLatLng.toString()));
String deviceId = Settings.Secure.getString(this.getContentResolver(), Settings.Secure.ANDROID_ID);
Positions position=new Positions(newLatLng.latitude,newLatLng.longitude,getWifiMacAddress(),deviceId);
Response.Listener<String> responseListener= new Response.Listener<String>() {
@Override
public void onResponse(String s) {
try {
JSONObject jsonResponse= new JSONObject(s);
boolean success=jsonResponse.getBoolean("success");
if(!success){
AlertDialog.Builder builder=new AlertDialog.Builder(MapsActivity.this);
builder.setMessage("uploading position failed")
.setNegativeButton("retry",null)
.create()
.show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
};
UploadPosition upload=new UploadPosition(position,responseListener);
RequestQueue queue= Volley.newRequestQueue(MapsActivity.this);
queue.add(upload);
}
public void deletePosition(){
String deviceId = Settings.Secure.getString(this.getContentResolver(), Settings.Secure.ANDROID_ID);
String mac=getWifiMacAddress();
Response.Listener<String> responseListener = new Response.Listener<String>(){
@Override
public void onResponse(String s) {
try {
JSONObject jsonResponse= new JSONObject(s);
boolean success=jsonResponse.getBoolean("success");
if(!success){
AlertDialog.Builder builder=new AlertDialog.Builder(MapsActivity.this);
builder.setMessage("uploading position failed")
.setNegativeButton("retry",null)
.create()
.show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
};
DeletePosition delete=new DeletePosition(mac,deviceId,responseListener);
RequestQueue queue=Volley.newRequestQueue(MapsActivity.this);
queue.add(delete);
}
public void deviceUniqueNumber(){
String deviceId = Settings.Secure.getString(this.getContentResolver(), Settings.Secure.ANDROID_ID);
Toast.makeText(this,deviceId+" "+getWifiMacAddress(),Toast.LENGTH_SHORT).show();
}
public static String getWifiMacAddress() {
try {
String interfaceName = "wlan0";
List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
for (NetworkInterface intf : interfaces) {
if (!intf.getName().equalsIgnoreCase(interfaceName)){
continue;
}
byte[] mac = intf.getHardwareAddress();
if (mac==null){
return "";
}
StringBuilder buf = new StringBuilder();
for (byte aMac : mac) {
buf.append(String.format("%02X:", aMac));
}
if (buf.length()>0) {
buf.deleteCharAt(buf.length() - 1);
}
return buf.toString();
}
} catch (Exception ex) {
Log.i("getWifiMacAddress","exception in getWifiMacAddress");
}
return "";
}
}
activity_maps.xml：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:orientation="horizontal">
<fragment class="com.example.gio.autostop.address_fragment"
android:id="@+id/address_fragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
<fragment
android:layout_width="match_parent"
android:layout_height="match_parent" android:id="@+id/map"
tools:context="com.example.gio.autostop.MapsActivity"
class="com.google.android.gms.maps.SupportMapFragment"
>
<include layout="@layout/map_interface"/>
</fragment>
</LinearLayout>
address_fragment.java：
package com.example.gio.autostop;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.ResultReceiver;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ProgressBar;
import android.widget.TextView;
public class address_fragment extends Fragment {
protected TextView mLocationAddressTextView;
protected String mAddressOutput;
private AddressResultReceiver mResultReceiver;
private ProgressBar mProgressBar;
protected boolean mAddressRequested;
private MapsActivity mapsActivity;
public address_fragment() {
// Required empty public constructor
}
class AddressResultReceiver extends ResultReceiver{
private int CREATOR;
public AddressResultReceiver(Handler handler) {
super(handler);
}
@Override
protected void onReceiveResult(int resultCode, Bundle resultData) {
mAddressOutput = resultData.getString(Constants.RESULT_DATA_KEY);
mAddressRequested = false;
updateUIWidgets();
super.onReceiveResult(resultCode, resultData);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_address_fragment, container, false);
}
public void setMapsActivity(MapsActivity mapsActivity){
this.mapsActivity=mapsActivity;
}
@Override
public void onSaveInstanceState(Bundle outState) {
outState.putString("mAddressOutput",mAddressOutput);
outState.putBoolean("mAddressRequested",mAddressRequested);
}
@Override
public void onStart() {
super.onStart();
View view = getView();
if(view!=null){
mProgressBar = (ProgressBar) view.findViewById(R.id.progress_bar);
mLocationAddressTextView=(TextView) view.findViewById(R.id.address);
displayAddressOutput();
}
}
public void displayAddressOutput(){
mLocationAddressTextView.setText(mAddressOutput);
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mResultReceiver = new AddressResultReceiver(new Handler());
mAddressRequested = false;
mAddressOutput = " ";
updateUIWidgets();
}
public void startIntentService() {
Intent intent = new Intent(getContext(), FetchAddressIntentService.class);
intent.putExtra(Constants.RECEIVER, mResultReceiver);
intent.putExtra(Constants.LOCATION_DATA_EXTRA, mapsActivity.mCurrentLocation);
mapsActivity.startService(intent);
}
public void fetchAddressHandler() {
if (mapsActivity.mGoogleApiClient.isConnected() && mapsActivity.mCurrentLocation != null) {
startIntentService();
}
mAddressRequested = true;
updateUIWidgets();
}
private void updateUIWidgets() {
if (mAddressRequested) {
mProgressBar.setVisibility(ProgressBar.VISIBLE);
} else {
mProgressBar.setVisibility(ProgressBar.GONE);
}
}
}
fragment_address_fragment：
<FrameLayout 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"
tools:context="com.example.gio.autostop.address_fragment"
android:background="@android:color/transparent">
<TextView
android:id="@+id/address"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:text=""
android:layout_centerHorizontal="true"
android:textSize="22sp"/>
</FrameLayout>
map_interface.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/check_in"
android:layout_marginTop="@dimen/layout_marginTop_button"
android:layout_gravity="end"
android:layout_alignParentBottom="true"
android:layout_weight="1"
/>
<Button
android:id="@+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/check_out"
android:layout_marginTop="@dimen/layout_marginTop_button"
android:layout_gravity="end"
android:layout_weight="1"
/>
<ProgressBar
android:id="@+id/progress_bar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true" />
</LinearLayout>
何が原因でエラーが発生していますか？ 更新： 完全なプロジェクト：おそらくhttps://github.com/giusha/Autostop
それは働いていなかった、同じエラーが登場。スタックトレース：http://pastie.org/10913052 あなたは、さらに研究を行うことを決定した場合、完全なプロジェクトを参照してください。 私は最初の投稿 – giusha9
のアップデートでそれをリンクさしかし、あなたのコードは、あなたが（あなたはまだあなたがidでそれを見つけるしようとしているレイアウトXMLでPROGRESS_BARビューを持っていない）の変更を行ったことを示していません。 'mProgressBar.setVisibility'と呼ぶコードをコメントアウトして、エラーがなくなるか、どのようなエラーが表示されるかを確認してください。 – ishmaelMakitla
私は変更されたコードでそれを走らせ、GitHubにアップロードする前よりも私はback.Nowを変更しました。私はmProgressBar.setVisibilityとprogresbarをfragment_address_fragmentに移したコードをコメントアウトしました。まだ1つのエラーがあります：ヌルオブジェクトリファレンスで仮想メソッド 'void android.widget.Button.setOnClickListener（android.view.View $ OnClickListener）'を呼び出そうとしました – giusha9