我是Android的新手，我正在编写一个应用程序，它会发送一些带有短信的地理位置并接收它，并将其显示在地图上。 它在SMSReceiver中获取短信并将部分sms放入bundle中并调用MapActivity。 问题是MapActivity不显示任何地理位置。 我在SMSReceiver中获得了祝酒。所以我认为没有任何问题，MapActivity运行但我没有得到任何标记......有没有人知道问题出在哪里???
这是我的SMSReceiver：
public class SMSReceiver extends BroadcastReceiver {
private static final String ACTION = "android.provider.Telephony.SMS_RECEIVED";;
private static final String GEOPINTS = "geoPoints";
Long user_id;
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(ACTION)) {
Bundle bundle = intent.getExtras();
android.telephony.SmsMessage[] msg = null;
long sender = -1;
String geoPoints = null;
if (bundle != null) {
Object[] pdus = (Object[]) bundle.get("pdus");
msg = new android.telephony.SmsMessage[pdus.length];
int i;
for (i = 0; i < msg.length; i++) {
msg[i] = SmsMessage.createFromPdu((byte[]) pdus[i]);
if (msg[i].getMessageBody().startsWith(GEOPINTS)) {
Toast.makeText(context, "geoPoints received.", Toast.LENGTH_SHORT).show();
// abortBroadcast();
String number = msg[i].getOriginatingAddress();
number = number.substring(3);
sender = Long.parseLong(number);
geoPoints = msg[i].getMessageBody();
geoPoints = geoPoints.substring(9);
Intent mapActivityIntent = new Intent(context, MapActivity.class);
mapActivityIntent.putExtra("GEOPOINTS", geoPoints);
mapActivityIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(mapActivityIntent);
}
}
}
}
}}
这是我的MapActivity：
public class MapActivity extends FragmentActivity implements ConnectionCallbacks, OnConnectionFailedListener,
LocationListener {
private static final long ONE_MIN = 1000 * 60;
private static final long TWO_MIN = ONE_MIN * 2;
private static final long FIVE_MIN = ONE_MIN * 5;
private static final long MEASURE_TIME = 1000 * 30;
private static final long POLLING_FREQ = 1000 * 10;
private static final long FASTES_UPDATE_FREQ = 1000 * 2;
private static final float MIN_ACCURACY = 25.0f;
private static final float MIN_LAST_READ_ACCURACY = 500.0f;
private Location mBestReading;
private Location mCurrentLocation;
LocationRequest mLocationRequest;
private LocationClient mLocationClient;
private final String TAG = "MapActivity";
private GoogleMap googleMap;
Long user_id;
String user_name;
String friend_name;
ImageView imageView;
private static String USER_ID = "USER_ID";
ArrayList<Person> friends = new ArrayList<Person>();
ArrayList<LatLng> points = new ArrayList<LatLng>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_map);
Intent i = new Intent();
Bundle bundle = i.getExtras();
final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
user_id = Long.valueOf(prefs.getLong(USER_ID, 0L));
imageView = (ImageView) findViewById(R.id.tinyImage);
TextView userNameText = (TextView) findViewById(R.id.tinyUserName);
DataBaseAdapter db = new DataBaseAdapter(this);
User user = new User();
user = db.getUserId(user_id);
user_name = user.getName();
userNameText.setText(user_name);
byte[] image = null;
Bitmap bitmap = null;
image = user.getImage();
if (image != null) {
ByteArrayInputStream imageStream = new ByteArrayInputStream(image);
bitmap = BitmapFactory.decodeStream(imageStream);
imageView.setImageBitmap(bitmap);
} else {
Bitmap bm = BitmapFactory.decodeResource(getResources(), R.drawable.image_default);
imageView = (ImageView) findViewById(R.id.tinyImage);
imageView.setImageBitmap(bm);
}
if (bundle != null && bundle.containsKey("GEOPOINTS")) {
String geoPoints = bundle.getString("GEOPOINTS");
if (geoPoints != null) {
String latlng = "";
Double lat = null;
Double lng = null;
LatLng point = null;
do {
latlng = geoPoints.substring(0, geoPoints.indexOf("\n"));
lat = Double.parseDouble(latlng.substring(0, latlng.indexOf(" ")));
lng = Double.parseDouble(latlng.substring(latlng.indexOf(" ") + 1));
Toast.makeText(getApplicationContext(), "lat = " + lat + " lng = " + lng, Toast.LENGTH_SHORT)
.show();
point = new LatLng(lat, lng);
points.add(point);
if (geoPoints.indexOf("\n") != geoPoints.indexOf(geoPoints.length())) {
geoPoints = geoPoints.substring(geoPoints.indexOf("\n") + 1);
} else {
geoPoints = "";
}
} while (!geoPoints.equals(""));
}
}
// Check if google play service , GPS & network is enabled
if (!servicesAvailable())
finish();
// Create new Location Client. This class will handle call backs
mLocationClient = new LocationClient(this, this, this);
// Create and define the LocationRequest
mLocationRequest = LocationRequest.create();
// Use high accuracy
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
// Update every 10 seconds
mLocationRequest.setInterval(POLLING_FREQ);
// Receive updates no more often than every 2 seconds
mLocationRequest.setFastestInterval(FASTES_UPDATE_FREQ);
}
private void addDirectionMarker() {
if (points != null) {
for (LatLng point : points) {
googleMap.addMarker(new MarkerOptions().position(point).icon(
BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_GREEN)));
}
}
}
private void initilizeMap() {
if (googleMap == null) {
googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
}
if (googleMap == null) {
Toast.makeText(getApplicationContext(), "Sorry! unable to create maps", Toast.LENGTH_SHORT).show();
}
googleMap.setMyLocationEnabled(true);
googleMap.setOnInfoWindowClickListener(new OnInfoWindowClickListener() {
@Override
public void onInfoWindowClick(Marker mark) {
if (!mark.getTitle().equals("You are here!") && !mark.getTitle().equals(null)) {
friend_name = mark.getTitle();
Intent i = new Intent(getApplicationContext(), ChoiceActivity.class);
i.putExtra("FRIEND_NAME", friend_name);
startActivity(i);
}
}
});
}
@Override
protected void onStart() {
super.onStart();
// Connect to LocationServices
mLocationClient.connect();
}
@Override
protected void onStop() {
// Stop updates
mLocationClient.removeLocationUpdates(this);
// Disconnect from LocationServices
mLocationClient.disconnect();
super.onStop();
}
// Get the last known location from all providers
// return best reading that is as accurate as minAccuracy and
// was taken no longer then minAge milliseconds ago. If none,
// return null.
private Location bestLastKnownLocation(float minAccuracy, long maxAge) {
Location bestResult = null;
float bestAccuracy = Float.MAX_VALUE;
long bestTime = Long.MIN_VALUE;
// Get the best most recent location currently available
mCurrentLocation = mLocationClient.getLastLocation();
if (mCurrentLocation != null) {
float accuracy = mCurrentLocation.getAccuracy();
long time = mCurrentLocation.getTime();
if (accuracy < bestAccuracy) {
bestResult = mCurrentLocation;
bestAccuracy = accuracy;
bestTime = time;
}
}
// Return best reading or null
if (bestAccuracy > minAccuracy || (System.currentTimeMillis() - bestTime) > maxAge) {
return null;
} else {
return bestResult;
}
}
private boolean servicesAvailable() {
// Check that Google Play Services are available
int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
// If Google Play services is available
return (ConnectionResult.SUCCESS == resultCode);
}
@Override
protected void onResume() {
super.onResume();
initilizeMap();
addFriendsMarker();
addDirectionMarker();
}
public void setUserLocation(Location location) {
DataBaseAdapter db = new DataBaseAdapter(getApplicationContext());
User user = new User();
user.setId(user_id);
com.bhproj.test.gpstrackertest.model.Location loc = new com.bhproj.test.gpstrackertest.model.Location(
location.getLatitude(), location.getLongitude());
user.setLocation(loc);
db.updateLocUser(user);
MarkerOptions marker = new MarkerOptions()
.position(new LatLng(location.getLatitude(), location.getLongitude())).title("You are here!")
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_CYAN));
googleMap.addMarker(marker);
googleMap.animateCamera(
CameraUpdateFactory.newCameraPosition(CameraPosition.builder()
.target(new LatLng(location.getLatitude(), location.getLongitude())).build()), 2000, null);
}
public void addFriendsMarker() {
DataBaseAdapter db = new DataBaseAdapter(getApplicationContext());
List<Person> persons = db.getFriends(user_id);
if (persons != null) {
for (Person friend : persons) {
friends.add(friend);
}
if (friends != null) {
for (Person i : friends) {
googleMap.addMarker(new MarkerOptions()
.position(new LatLng(i.getLocation().getLatitude(), i.getLocation().getLongitude()))
.title(i.getName())
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_ROSE)));
}
}
}
}
public void goToUserPageOnClickListener(View v) {
Intent i = new Intent(getApplicationContext(), UserPageActivity.class);
startActivity(i);
}
@Override
public void onLocationChanged(Location location) {
// Determine whether new location is better than current best
// estimate
if (null == mBestReading || location.getAccuracy() < mBestReading.getAccuracy()) {
// Update best estimate
mBestReading = location;
// Update display
googleMap.clear();
setUserLocation(location);
addFriendsMarker();
if (mBestReading.getAccuracy() < MIN_ACCURACY)
mLocationClient.removeLocationUpdates(this);
}
}
@Override
public void onConnectionFailed(ConnectionResult arg0) {
Log.i(TAG, "Connection Failed. Try again later.");
}
@Override
public void onConnected(Bundle arg0) {
// Get first reading. Get additional location updates if necessary
if (servicesAvailable()) {
// Get best last location measurement meeting criteria
mBestReading = bestLastKnownLocation(MIN_LAST_READ_ACCURACY, FIVE_MIN);
// Display last reading information
if (null != mBestReading) {
googleMap.clear();
setUserLocation(mBestReading);
addFriendsMarker();
// } else {
//
// Toast.makeText(getApplicationContext(),
// "No Initial Reading Available", Toast.LENGTH_LONG).show();
}
if (null == mBestReading || mBestReading.getAccuracy() > MIN_LAST_READ_ACCURACY
|| mBestReading.getTime() < System.currentTimeMillis() - TWO_MIN) {
mLocationClient.requestLocationUpdates(mLocationRequest, this);
// Schedule a runnable to unregister location listeners
Executors.newScheduledThreadPool(1).schedule(new Runnable() {
@Override
public void run() {
mLocationClient.removeLocationUpdates(MapActivity.this);
}
}, MEASURE_TIME, TimeUnit.MILLISECONDS);
}
}
}
@Override
public void onDisconnected() {
Log.i(TAG, "Disconnected. Try again later.");
}}
答案 0 :(得分：0)
使用
Intent i = getIntent();
相反，如果Intent i = new Intent();从startActivity
BroadcastReceiver传递的Intent
答案 1 :(得分：0)
在你的broadcasereceiver中做这样的事情:(使用那个意图）
public class SMSReceiver extends BroadcastReceiver {
public static final String NOTIFICATION = "receiver_sms";
@Override
public void onReceive(Context context, Intent intent) {
Log.i("onReceive methode", "new SMS Comming");
Bundle myBundle = intent.getExtras();
SmsMessage[] messages = null;
String strMessage = "", address = "";
abortBroadcast();
if (myBundle != null) {
// get message in pdus format(protocol description unit)
Object[] pdus = (Object[]) myBundle.get("pdus");
// create an array of messages
messages = new SmsMessage[pdus.length];
Log.i("onReceive methode", "new SMS Comming");
for (int i = 0; i < messages.length; i++) {
// Create an SmsMessage from a raw PDU.
messages[i] = SmsMessage.createFromPdu((byte[]) pdus[i]);
// get the originating address (sender) of this SMS message in
// String form or null if unavailable
address = messages[i].getOriginatingAddress();
// get the message body as a String, if it exists and is text
// based.
strMessage += messages[i].getMessageBody();
strMessage += "\n";
}
// show message in a Toast
}
// this is what you need
Intent broadcast = new Intent(NOTIFICATION);
broadcast.putExtra("data", strMessage);
LocalBroadcastManager.getInstance(context).sendBroadcast(broadcast);
}
然后在你的活动中注册你的接收者
public BroadcastReceiver receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
Log.e(tag, "SMS Received.");
Bundle b = intent.getBundleExtra("SMS");
String str = intent.getStringExtra("data");
parseSMSData(str);
}
};
然后在onResume（）：
@Override
protected void onResume() {
super.onResume();
LocalBroadcastManager.getInstance(this).registerReceiver(receiver,
new IntentFilter(SMSReceiver.NOTIFICATION));
}
并且在onDestroy（）中你必须注销这个接收器：
@Override
protected void onDestroy() {
// Unregister since the activity is about to be closed.
LocalBroadcastManager.getInstance(this).unregisterReceiver(receiver);
super.onDestroy();
}
并且也不要忘记在应用程序标记中的清单文件中添加它：
<receiver android:name=".SMSBroadcastReceiver">
<intent-filter>
<action android:name="android.provider.Telephony.SMS_RECEIVED"></action>
</intent-filter>
</receiver>