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有時我面臨這個問題，我的意圖服務崩潰，而我再次onReceive（）方法重新啓動它。 這是我的堆棧跟蹤。一些時間意圖服務崩潰在啓動服務再次響應Reciver
「顯示java.lang.NullPointerException：嘗試在android.app.ContextImpl.validateServiceIntent上的空對象引用 調用虛擬方法android.content.ComponentName android.content.Intent.getComponent（）'（ContextImpl .java：1207） at android.app.ContextImpl.startServiceCommon（ContextImpl.java:1238） at android.app.ContextImpl.startService（ContextImpl.java:1222） at android.content.ContextWrapper.startService（ContextWrapper.java ：581） at com.live.wheelz.MapFragmentPassenger $ ResponseReceiver $ 3.run（MapFragmentPassenger.java:3162） at android.os.Handler.handleCallback（Handler.java:739） a t android.os.Handler.dispatchMessage（Handler.java:95） at android.os.Looper.loop（Looper.java:148） at android.app.ActivityThread.main（ActivityThread.java:5417） at java .lang.reflect.Method.invoke（Native Method） at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:726） at com.android.internal.os.ZygoteInit.main（ZygoteInit。 Java的：616） 「 這裏是我的代碼
public class ResponseReceiver extends WakefulBroadcastReceiver {
public static final String ACTION_RESP = "com.live.ResponseReceiver.intent.action.MESSAGE_PROCESSED";
@Override
public void onReceive(Context context, Intent intent) {
if(!intent.getStringExtra("journeyState").equals("jr_droped") && !intent.getStringExtra("journeyState").equals("jr_canceled")) {
if(intent.getStringExtra("journeyState").equals("jr_arrived") && alertCounter==0) {
alertCounter=alertCounter+1;
popUp.dismisDialog();
soundAlert.initRigtone("Driver is arrived at your location");
// snack("Driver is arrived at your location","message","long");
}
if (sharedData.getisSimulation() == true) {
if (intent.getBooleanExtra("same", true) == false) {
double latc = intent.getDoubleExtra("pDriverLatitude", 0.0);
double lonc = intent.getDoubleExtra("pDriverLongitude", 0.0);
//dname.setText("Latitude:"+lat+"Longitude:"+lon);
if (driver != null) {
driver.remove();
}
//String address=getaddress(latpickup,lonpickup);
for (Marker oc : nearest_driver) {
oc.remove();
}
driver = googleMap.addMarker(new MarkerOptions()
.position(new LatLng(latc, lonc))
.title("Current location Driver").icon(BitmapDescriptorFactory.fromResource(R.drawable.bike_left))
.draggable(true));
if (markerlocation != null) {
markerlocation.remove();
}
markerlocation = googleMap.addMarker(new MarkerOptions()
.position(new LatLng(sharedData.getnewlat(), sharedData.getnewlon()))
.title("Passenger Current Location").icon(BitmapDescriptorFactory.fromResource(R.drawable.bluedot)));
if (sharedData.getisRating() == false) {
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
try {
startService(servicedriver);
}
catch (Exception ex)
{
System.out.print("");
}
}
}, sharedData.getPassenger_request_delay_time());
}
}
if (intent.getBooleanExtra("same", false) == true) {
if (markerlocation != null) {
markerlocation.remove();
}
markerlocation = googleMap.addMarker(new MarkerOptions()
.position(new LatLng(sharedData.getnewlat(), sharedData.getnewlon()))
.title("Passenger Current Location").icon(BitmapDescriptorFactory.fromResource(R.drawable.bluedot)));
if (sharedData.getisRating() == false) {
if (receiver != null) {
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
try {
startService(servicedriver);
}
catch (Exception ex)
{
System.out.print("");
}
//startService(servicedriver);
}
}, sharedData.getPassenger_request_delay_time());
}
}
}
}
if (sharedData.getisSimulation() == false) {
if (intent.getBooleanExtra("same", false) == false) {
if (intent.getBooleanExtra("connection_error", false) == false) {
latc = intent.getDoubleExtra("pDriverLatitude", 0.0);
lonc = intent.getDoubleExtra("pDriverLongitude", 0.0);
//snack("Driver Current lat:"+latc+" Driver Current lon:"+lonc, "message", " ");
//Ali Abbas Location Diffrnce Calc
double latDrvr = sharedData.getPickuplocationlat();
double lonDrvr = sharedData.getPickuplocationlon();
double distanceDiff = getDistanceInMiles(latc,lonc,latDrvr,lonDrvr);
double getDisrnce = sharedata.getDrvrPsngrRnge() ;
if(distanceDiff <= sharedata.getDrvrPsngrRnge() && intent.getStringExtra("journeyState").equals("jr_driverAccepted")) {
/*if (!ISPOPUPED) {
ISPOPUPED =true ;*/
fncDrvrArndPsngr();
//}
}else if(distanceDiff > sharedata.getDrvrPsngrRnge() && intent.getStringExtra("journeyState").equals("jr_driverAccepted")){
fncDrvrArndPsngrPopUpDismiss();
}
//Ali Abbas Distance Calc Ends
}
smoothly(latc, lonc);
if (sharedData.getisRating() == false) {
if (intent.getBooleanExtra("connection_error", true) == true) {
snack("Internet Connection Error", "message", " ");
fncDrvrArndPsngrPopUpDismiss();
} else {
AppAsynTaskAddress setaddress = new AppAsynTaskAddress(MapFragmentPassenger.this, latc, lonc, "driverlocation", false);
setaddress.execute();
//snack("Driver Arrived at:"+pickuplocationtext.getText().toString(), "message", " ");
}
if (receiver != null) {
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
try {
startService(servicedriver);
}
catch (Exception ex)
{
System.out.print("");
}
//startService(servicedriver);
}
}, sharedData.getPassenger_request_delay_time());//sharedData.getPassenger_request_delay_time()
}
} else {
googleMap.clear();
}
}
if (intent.getBooleanExtra("same", true) == true) {
if (sharedData.getisRating() == false) {
//snack("Same lat lon", "message", " ");
if (receiver != null) {
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
try {
startService(servicedriver);
}
catch (Exception ex)
{
System.out.print("");
}
// startService(servicedriver);
}
}, sharedData.getPassenger_request_delay_time());//sharedData.getPassenger_request_delay_time()
}
} else {
googleMap.clear();
}
}
}
}
if(intent.getStringExtra("journeyState").equals("jr_droped")) {
if(!sharedata.isOnRatingScreen()) {
Intent intSetPass = new Intent(MapFragmentPassenger.this, Ratingscreenpassenger.class);
intSetPass.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intSetPass);
}
}
if(intent.getStringExtra("journeyState").equals("jr_canceled")) {
sharedata.setJmode(false);
sharedata.setisRating(true);
//db.deleteBillingParameter();
db.deleteJourneyRating(sharedata.getDriver_rquested_journeyid(), "p");
changebutton();
snack("Journey Canceled","message","long");
soundAlert.initRigtone("Journey Canceled");
}
}
}
的可能的複製（HTTP [什麼是空指針異常，以及如何解決它？] //stackoverflow.com/questions/218384/what-is-a-nullpointerexception-and-how-do-i-fix-it） – 0X0nosugar