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how to send data from one activity to another in android?

I am trying to send my web service response from one activity to another .when I move one activity to another activity without response it work fine .but when I send response it give me error .could you please help me removing this exception ..
Actually I am sending like this:I think problem in this line i.putExtra("test", data);
I do like this..
10-25 21:13:47.619: E/AndroidRuntime(962): FATAL EXCEPTION: main
10-25 21:13:47.619: E/AndroidRuntime(962): java.lang.RuntimeException: Unable to start activity
ComponentInfo{com.firstgroup.applicationload/com.firstgroup.ui.screens.Departuredashboardscreen}: java.lang.NullPointerException
10-25 21:13:47.619: E/AndroidRuntime(962): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
10-25 21:13:47.619: E/AndroidRuntime(962): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
10-25 21:13:47.619: E/AndroidRuntime(962): at android.app.ActivityThread.access$600(ActivityThread.java:141)
10-25 21:13:47.619: E/AndroidRuntime(962): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
10-25 21:13:47.619: E/AndroidRuntime(962): at android.os.Handler.dispatchMessage(Handler.java:99)
10-25 21:13:47.619: E/AndroidRuntime(962): at android.os.Looper.loop(Looper.java:137)
10-25 21:13:47.619: E/AndroidRuntime(962): at android.app.ActivityThread.main(ActivityThread.java:5041)
10-25 21:13:47.619: E/AndroidRuntime(962): at java.lang.reflect.Method.invokeNative(Native Method)
10-25 21:13:47.619: E/AndroidRuntime(962): at java.lang.reflect.Method.invoke(Method.java:511)
10-25 21:13:47.619: E/AndroidRuntime(962): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
10-25 21:13:47.619: E/AndroidRuntime(962): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
10-25 21:13:47.619: E/AndroidRuntime(962): at dalvik.system.NativeStart.main(Native Method)
10-25 21:13:47.619: E/AndroidRuntime(962): Caused by: java.lang.NullPointerException
10-25 21:13:47.619: E/AndroidRuntime(962): at android.os.Parcel.readListInternal(Parcel.java:2237)
10-25 21:13:47.619: E/AndroidRuntime(962): at android.os.Parcel.readList(Parcel.java:1531)
10-25 21:13:47.619: E/AndroidRuntime(962): at com.firstgroup.dto.deparaturedaseboarddto.<init>(deparaturedaseboarddto.java:209)
10-25 21:13:47.619: E/AndroidRuntime(962): at com.firstgroup.dto.deparaturedaseboarddto.<init>(deparaturedaseboarddto.java:193)
10-25 21:13:47.619: E/AndroidRuntime(962): at com.firstgroup.dto.deparaturedaseboarddto$1.createFromParcel(deparaturedaseboarddto.java:185)
10-25 21:13:47.619: E/AndroidRuntime(962): at com.firstgroup.dto.deparaturedaseboarddto$1.createFromParcel(deparaturedaseboarddto.java:1)
10-25 21:13:47.619: E/AndroidRuntime(962): at android.os.Parcel.readParcelable(Parcel.java:2103)
10-25 21:13:47.619: E/AndroidRuntime(962): at android.os.Parcel.readValue(Parcel.java:1965)
10-25 21:13:47.619: E/AndroidRuntime(962): at android.os.Parcel.readMapInternal(Parcel.java:2226)
10-25 21:13:47.619: E/AndroidRuntime(962): at android.os.Bundle.unparcel(Bundle.java:223)
10-25 21:13:47.619: E/AndroidRuntime(962): at android.os.Bundle.getParcelable(Bundle.java:1173)
10-25 21:13:47.619: E/AndroidRuntime(962): at android.content.Intent.getParcelableExtra(Intent.java:4330)
10-25 21:13:47.619: E/AndroidRuntime(962): at com.firstgroup.ui.screens.Departuredashboardscreen.onCreate(Departuredashboardscreen.java:21)
10-25 21:13:47.619: E/AndroidRuntime(962): at android.app.Activity.performCreate(Activity.java:5104)
10-25 21:13:47.619: E/AndroidRuntime(962): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
10-25 21:13:47.619: E/AndroidRuntime(962): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
10-25 21:13:47.619: E/AndroidRuntime(962): ... 11 more
#Override
public void getWebserviceResponse(String result) {
// TODO Auto-generated method stub
//JSONObject js=new Jso(result);
deparaturedaseboarddto data = new Gson().fromJson(result, deparaturedaseboarddto.class);
/*listView=(ListView)findViewById(R.id.listView1);
adapter = new CustomListAdapter(this, data.getData());
listView.setAdapter(adapter);*/
Intent i = new Intent(Appliacationload.this,Departuredashboardscreen.class);
i.putExtra("test", data);
startActivity(i);
finish();
Log.d("----", "========");
}
Second Activity:
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.departure_dashboard);
Intent i = getIntent();
deparaturedaseboarddto myParcelableObject = (deparaturedaseboarddto) i.getParcelableExtra("test");
Log.d("===", "hhhh");
}
**Model class :**
public class deparaturedaseboarddto implements Parcelable{
ArrayList<deparaturedaseboarddto> data;
public ArrayList<deparaturedaseboarddto> getData() {
return data;
}
public void setData(ArrayList<deparaturedaseboarddto> data) {
this.data = data;
}
#SerializedName("alertsId")
int alertsId;
#SerializedName("destExpArrival")
String destExpArrival;
#SerializedName("destSchArrival")
String destSchArrival;
#SerializedName("expDepart")
String expDepart;
#SerializedName("filteredStation")
String filteredStation;
#SerializedName("platformNo")
String platformNo;
#SerializedName("rid")
String rid;
#SerializedName("schDepart")
String schDepart;
#SerializedName("toc")
String toc;
#SerializedName("toExpArrival")
String toExpArrival;
#SerializedName("toSchArrival")
String toSchArrival;
#SerializedName("trainID")
String trainID;
#SerializedName("trainLastReportedAt")
String trainLastReportedAt;
#SerializedName("destinationStation")
DestinationStation destinationStation;
public deparaturedaseboarddto(String trainID,String toc,String trainLastReportedAt, String platformNo, String schDepart, String expDepart, int alertsId, String rid, String destSchArrival, String filteredStation, String destExpArrival, String toSchArrival, String toExpArrival,DestinationStation destinationStation){
super();
this.trainID=trainID;
this.toc=toc;
this.trainLastReportedAt=trainLastReportedAt;
this.platformNo=platformNo;
this.schDepart=schDepart;
this.expDepart=expDepart;
this.alertsId=alertsId;
this.destinationStation=destinationStation;
this.toExpArrival=toExpArrival;
this.toSchArrival=toSchArrival;
this.destExpArrival=destExpArrival;
this.filteredStation=filteredStation;
this.destSchArrival=destSchArrival;
this.rid=rid;
}
public DestinationStation getDestinationStation() {
return destinationStation;
}
public void setDestinationStation(DestinationStation destinationStation) {
this.destinationStation = destinationStation;
}
public int getAlertsId() {
return alertsId;
}
public void setAlertsId(int alertsId) {
this.alertsId = alertsId;
}
public String getDestExpArrival() {
return destExpArrival;
}
public void setDestExpArrival(String destExpArrival) {
this.destExpArrival = destExpArrival;
}
public String getDestSchArrival() {
return destSchArrival;
}
public void setDestSchArrival(String destSchArrival) {
this.destSchArrival = destSchArrival;
}
public String getExpDepart() {
return expDepart;
}
public void setExpDepart(String expDepart) {
this.expDepart = expDepart;
}
public String getFilteredStation() {
return filteredStation;
}
public void setFilteredStation(String filteredStation) {
this.filteredStation = filteredStation;
}
public String getPlatformNo() {
return platformNo;
}
public void setPlatformNo(String platformNo) {
this.platformNo = platformNo;
}
public String getRid() {
return rid;
}
public void setRid(String rid) {
this.rid = rid;
}
public String getSchDepart() {
return schDepart;
}
public void setSchDepart(String schDepart) {
this.schDepart = schDepart;
}
public String getToc() {
return toc;
}
public void setToc(String toc) {
this.toc = toc;
}
public String getToExpArrival() {
return toExpArrival;
}
public void setToExpArrival(String toExpArrival) {
this.toExpArrival = toExpArrival;
}
public String getToSchArrival() {
return toSchArrival;
}
public void setToSchArrival(String toSchArrival) {
this.toSchArrival = toSchArrival;
}
public String getTrainID() {
return trainID;
}
public void setTrainID(String trainID) {
this.trainID = trainID;
}
public String getTrainLastReportedAt() {
return trainLastReportedAt;
}
public void setTrainLastReportedAt(String trainLastReportedAt) {
this.trainLastReportedAt = trainLastReportedAt;
}
#Override
public int describeContents() {
// TODO Auto-generated method stub
return 0;
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(alertsId);
dest.writeString(destExpArrival);
dest.writeString(destSchArrival);
dest.writeString(expDepart);
dest.writeString(filteredStation);
dest.writeString(platformNo);
dest.writeString(rid);
dest.writeString(schDepart);
dest.writeString(toc);
dest.writeString(toExpArrival);
dest.writeString(toSchArrival);
dest.writeString(trainID);
dest.writeString(trainLastReportedAt);
dest.writeParcelable(this.destinationStation, flags);
dest.writeList(data);
}
public static final Parcelable.Creator<deparaturedaseboarddto> CREATOR = new Parcelable.Creator<deparaturedaseboarddto>() {
public deparaturedaseboarddto createFromParcel(Parcel in) {
return new deparaturedaseboarddto(in);
}
public deparaturedaseboarddto[] newArray(int size) {
return new deparaturedaseboarddto[size];
}
};
private deparaturedaseboarddto(Parcel in) {
this.alertsId=in.readInt();
this.destExpArrival=in.readString();
this.destSchArrival=in.readString();
this.expDepart=in.readString();
this.filteredStation=in.readString();
this.platformNo=in.readString();
this.rid=in.readString();
this.schDepart=in.readString();
this.toc=in.readString();
this.toExpArrival=in.readString();
this.toSchArrival=in.readString();
this.trainID=in.readString();
this.trainLastReportedAt=in.readString();
this.destinationStation = in.readParcelable(DestinationStation.class.getClassLoader());
in.readList(data,deparaturedaseboarddto.class.getClassLoader());
}
}
package com.firstgroup.dto;
import android.os.Parcel;
import android.os.Parcelable;
import com.google.gson.annotations.SerializedName;
public class DestinationStation implements Parcelable {
#SerializedName("crsCode")
String crsCode;
#SerializedName("stationName")
String stationName;
public DestinationStation(String crsCode, String stationName) {
// TODO Auto-generated constructor stub
super();
this.crsCode=crsCode;
this.stationName=stationName;
}
public String getCrsCode() {
return crsCode;
}
public void setCrsCode(String crsCode) {
this.crsCode = crsCode;
}
public String getStationName() {
return stationName;
}
public void setStationName(String stationName) {
this.stationName = stationName;
}
#Override
public int describeContents() {
// TODO Auto-generated method stub
return 0;
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(crsCode);
dest.writeString(stationName);
}
public static final Parcelable.Creator<DestinationStation> CREATOR = new Parcelable.Creator<DestinationStation>() {
public DestinationStation createFromParcel(Parcel in) {
return new DestinationStation(in);
}
public DestinationStation[] newArray(int size) {
return new DestinationStation[size];
}
};
private DestinationStation(Parcel in) {
this.crsCode=in.readString();
this.stationName=in.readString();
}
}
Updated one..
#Override
public void getWebserviceResponse(String result) {
// TODO Auto-generated method stub
//JSONObject js=new Jso(result);
deparaturedaseboarddto data = new Gson().fromJson(result, deparaturedaseboarddto.class);
/*listView=(ListView)findViewById(R.id.listView1);
adapter = new CustomListAdapter(this, data.getData());
listView.setAdapter(adapter);*/
Intent i = new Intent(Appliacationload.this,Departuredashboardscreen.class);
EventBus.getDefault().postSticky(data);
//i.putExtra("test", (Parcelable)data);
startActivity(i);
finish();
Log.d("----", "========");
}
Next Activity:
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.departure_dashboard);
Intent i = getIntent();
deparaturedaseboarddto myParcelableObject = (deparaturedaseboarddto) EventBus.getDefault().getStickyEvent(deparaturedaseboarddto.class);
Log.d("===", "hhhh");
}
Exception:
10-26 00:56:36.052: E/AndroidRuntime(806): FATAL EXCEPTION: AsyncTask #3
10-26 00:56:36.052: E/AndroidRuntime(806): java.lang.RuntimeException: An error occured while executing doInBackground()
10-26 00:56:36.052: E/AndroidRuntime(806): at android.os.AsyncTask$3.done(AsyncTask.java:299)
10-26 00:56:36.052: E/AndroidRuntime(806): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
10-26 00:56:36.052: E/AndroidRuntime(806): at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
10-26 00:56:36.052: E/AndroidRuntime(806): at java.util.concurrent.FutureTask.run(FutureTask.java:239)
10-26 00:56:36.052: E/AndroidRuntime(806): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
10-26 00:56:36.052: E/AndroidRuntime(806): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
10-26 00:56:36.052: E/AndroidRuntime(806): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
10-26 00:56:36.052: E/AndroidRuntime(806): at java.lang.Thread.run(Thread.java:856)
10-26 00:56:36.052: E/AndroidRuntime(806): Caused by: android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
10-26 00:56:36.052: E/AndroidRuntime(806): at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:4746)
10-26 00:56:36.052: E/AndroidRuntime(806): at android.view.ViewRootImpl.requestLayout(ViewRootImpl.java:823)
10-26 00:56:36.052: E/AndroidRuntime(806): at android.view.View.requestLayout(View.java:15473)
10-26 00:56:36.052: E/AndroidRuntime(806): at android.view.View.setFlags(View.java:8444)
10-26 00:56:36.052: E/AndroidRuntime(806): at android.view.View.setVisibility(View.java:5716)
10-26 00:56:36.052: E/AndroidRuntime(806): at android.app.Dialog.hide(Dialog.java:294)
10-26 00:56:36.052: E/AndroidRuntime(806): at com.firstgroup.webservice.RequestTask.doInBackground(RequestTask.java:66)
10-26 00:56:36.052: E/AndroidRuntime(806): at com.firstgroup.webservice.RequestTask.doInBackground(RequestTask.java:1)
10-26 00:56:36.052: E/AndroidRuntime(806): at android.os.AsyncTask$2.call(AsyncTask.java:287)
10-26 00:56:36.052: E/AndroidRuntime(806): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
10-26 00:56:36.052: E/AndroidRuntime(806): ... 4 more
10-26 00:56:40.424: E/WindowManager(806): Activity com.firstgroup.applicationload.Appliacationload has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{40f6b308 G.E..... R.....ID 0,0-729,324} that was originally added here
10-26 00:56:40.424: E/WindowManager(806): android.view.WindowLeaked: Activity com.firstgroup.applicationload.Appliacationload has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{40f6b308 G.E..... R.....ID 0,0-729,324} that was originally added here
10-26 00:56:40.424: E/WindowManager(806): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:354)
10-26 00:56:40.424: E/WindowManager(806): at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:216)
10-26 00:56:40.424: E/WindowManager(806): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
10-26 00:56:40.424: E/WindowManager(806): at android.app.Dialog.show(Dialog.java:281)
10-26 00:56:40.424: E/WindowManager(806): at com.firstgroup.webservice.RequestTask.onPreExecute(RequestTask.java:36)
10-26 00:56:40.424: E/WindowManager(806): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:586)
10-26 00:56:40.424: E/WindowManager(806): at android.os.AsyncTask.execute(AsyncTask.java:534)
10-26 00:56:40.424: E/WindowManager(806): at com.firstgroup.applicationload.Appliacationload.calldeparutureWebservice(Appliacationload.java:130)
10-26 00:56:40.424: E/WindowManager(806): at com.firstgroup.applicationload.Appliacationload.access$1(Appliacationload.java:126)
10-26 00:56:40.424: E/WindowManager(806): at com.firstgroup.applicationload.Appliacationload$2.onClick(Appliacationload.java:91)
10-26 00:56:40.424: E/WindowManager(806): at android.view.View.performClick(View.java:4204)
10-26 00:56:40.424: E/WindowManager(806): at android.view.View$PerformClick.run(View.java:17355)
10-26 00:56:40.424: E/WindowManager(806): at android.os.Handler.handleCallback(Handler.java:725)
10-26 00:56:40.424: E/WindowManager(806): at android.os.Handler.dispatchMessage(Handler.java:92)
10-26 00:56:40.424: E/WindowManager(806): at android.os.Looper.loop(Looper.java:137)
10-26 00:56:40.424: E/WindowManager(806): at android.app.ActivityThread.main(ActivityThread.java:5041)
10-26 00:56:40.424: E/WindowManager(806): at java.lang.reflect.Method.invokeNative(Native Method)
10-26 00:56:40.424: E/WindowManager(806): at java.lang.reflect.Method.invoke(Method.java:511)
10-26 00:56:40.424: E/WindowManager(806): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
10-26 00:56:40.424: E/WindowManager(806): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
10-26 00:56:40.424: E/WindowManager(806): at dalvik.system.NativeStart.main(Native Method)

Should be something like this:
#Override
public void getWebserviceResponse(String result) {
// TODO Auto-generated method stub
//JSONObject js=new Jso(result);
deparaturedaseboarddto data = new Gson().fromJson(result, deparaturedaseboarddto.class);
/*listView=(ListView)findViewById(R.id.listView1);
adapter = new CustomListAdapter(this, data.getData());
listView.setAdapter(adapter);*/
Intent i = new Intent(Appliacationload.this,Departuredashboardscreen.class);
//i.putExtra("test", data);
EventBus.getDefault().postSticky(deparaturedaseboarddto);
startActivity(i);
finish();
Log.d("----", "========");
}
and in Departuredashboardscreen
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.departure_dashboard);
deparaturedaseboarddto myParcelableObject = EventBus.getDefault().getStickyEvent(deparaturedaseboarddto.class);
Log.d("===", "hhhh");
}

Try using getExtra()
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.departure_dashboard);
//use getExtra()
Intent i = getIntent().getExtras();
deparaturedaseboarddto myParcelableObject =
(deparaturedaseboarddto) i.getParcelableExtra("test");
Log.d("===", "hhhh");
}

Google Analytics Android error java.lang.NullPointerException

I'm trying to work on Google Analytics for Androi. I get the message, and I'm following the advanced configuration of Android Analytics in Google Android SDK.
java.lang.RuntimeException: Unable to start activity
ComponentInfo{com.example.secondapp/com.example.secondapp.MainActivity}:
java.lang.NullPointerException
And I get this error:
01-02 15:39:38.410: D/AndroidRuntime(1338): Shutting down VM
01-02 15:39:38.410: W/dalvikvm(1338): threadid=1: thread exiting with uncaught exception (group=0xb1ab7ba8)
01-02 15:39:38.420: E/AndroidRuntime(1338): FATAL EXCEPTION: main
01-02 15:39:38.420: E/AndroidRuntime(1338): Process: com.example.secondapp, PID: 1338
01-02 15:39:38.420: E/AndroidRuntime(1338): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.secondapp/com.example.secondapp.MainActivity}: java.lang.NullPointerException
01-02 15:39:38.420: E/AndroidRuntime(1338): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
01-02 15:39:38.420: E/AndroidRuntime(1338): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
01-02 15:39:38.420: E/AndroidRuntime(1338): at android.app.ActivityThread.access$800(ActivityThread.java:135)
01-02 15:39:38.420: E/AndroidRuntime(1338): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
01-02 15:39:38.420: E/AndroidRuntime(1338): at android.os.Handler.dispatchMessage(Handler.java:102)
01-02 15:39:38.420: E/AndroidRuntime(1338): at android.os.Looper.loop(Looper.java:136)
01-02 15:39:38.420: E/AndroidRuntime(1338): at android.app.ActivityThread.main(ActivityThread.java:5017)
01-02 15:39:38.420: E/AndroidRuntime(1338): at java.lang.reflect.Method.invokeNative(Native Method)
01-02 15:39:38.420: E/AndroidRuntime(1338): at java.lang.reflect.Method.invoke(Method.java:515)
01-02 15:39:38.420: E/AndroidRuntime(1338): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
01-02 15:39:38.420: E/AndroidRuntime(1338): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
01-02 15:39:38.420: E/AndroidRuntime(1338): at dalvik.system.NativeStart.main(Native Method)
01-02 15:39:38.420: E/AndroidRuntime(1338): Caused by: java.lang.NullPointerException
01-02 15:39:38.420: E/AndroidRuntime(1338): at com.example.secondapp.MainActivity.onCreate(MainActivity.java:24)
01-02 15:39:38.420: E/AndroidRuntime(1338): at android.app.Activity.performCreate(Activity.java:5231)
01-02 15:39:38.420: E/AndroidRuntime(1338): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
01-02 15:39:38.420: E/AndroidRuntime(1338): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
01-02 15:39:38.420: E/AndroidRuntime(1338): ... 11 more
Here is my code for SecondAppApplication, which has similarities to the android docs:
public class SecondAppApplication extends Application {
private static GoogleAnalytics mGa;
private static Tracker mTracker;
private static final String GA_PROPERTY_ID = "UA-XXXXXXXX-1";
private static final int GA_DISPATCH_PERIOD = 30;
private static final boolean GA_IS_DRY_RUN = false;
private static final LogLevel GA_LOG_VERBOSITY = LogLevel.INFO;
private static final String TRACKING_PREF_KEY = "trackingPreferences";
#SuppressWarnings("deprecation")
private void initializeGa() {
mGa = GoogleAnalytics.getInstance(this);
mTracker = mGa.getTracker(GA_PROPERTY_ID);
GAServiceManager.getInstance().setLocalDispatchPeriod(GA_DISPATCH_PERIOD);
mGa.setDryRun(GA_IS_DRY_RUN);
mGa.getLogger().setLogLevel(GA_LOG_VERBOSITY);
SharedPreferences userPrefs = PreferenceManager.getDefaultSharedPreferences(this);
userPrefs.registerOnSharedPreferenceChangeListener(new SharedPreferences.OnSharedPreferenceChangeListener() {
#Override
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
if (key.equals(TRACKING_PREF_KEY)) {
GoogleAnalytics.getInstance(getApplicationContext()).setAppOptOut(sharedPreferences.getBoolean(key, false));
}
}
});
}
#Override
public void onCreate() {
super.onCreate();
initializeGa();
}
public static Tracker getGaTracker() {
return mTracker;
}
public static GoogleAnalytics getGaInstance() {
return mGa;
}
}
Here is my MainActivity class:
public class MainActivity extends Activity {
public static final String EXTRA_MESSAGE = "com.example.myfirstapp.MESSAGE";
private static final String SCREEN_LABEL = "Main Screen";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
SecondAppApplication.getGaTracker().set(Fields.SCREEN_NAME,SCREEN_LABEL);
setContentView(R.layout.main);
}
#Override
public void onStart() {
super.onStart();
SecondAppApplication.getGaTracker().send(MapBuilder.createAppView().build());
}
#Override
public void onStop() {
super.onStop();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch(item.getItemId()) {
case R.id.action_search:
openSearch();
return true;
case R.id.action_settings:
openSettings();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
public void openSearch() {
}
public void openSettings() {
}
public void sendMessage(View view) {
Intent intent = new Intent(this,DisplayMessageActivity.class);
EditText editText = (EditText) findViewById(R.id.edit_message);
String message = editText.getText().toString();
intent.putExtra(EXTRA_MESSAGE, message);
startActivity(intent);
}
}
Why does java.lang.NullPointerException exists, and/or how would I solve this?
Do I need to declare initializeGa() again inside MainActivity or AndroidManifest.xml?

It looks to me like:
SecondAppApplication.getGaTracker().set(Fields.SCREEN_NAME,SCREEN_LABEL);
Is probably calling the set method on a null object, because your accessing statically without initializing it first. This almost looks like you were trying to do a singleton or something...
I would change your code to:
public static Tracker getGaTracker() {
if(mTracker ==null) {
initialize();
}
return mTracker;
}
The problem of course being that since you're doing this statically you wont have a context to pass.... I think you may need to reorganize the project a bit.
Check out this:
Android: Persist object across activities

I found out that the AndroidManifest.xml application should contain the correct android.name.
In this case, android.name="com.example.secondapplication.SecondAppApplication"

Fatal Exception when viewing/ writing database SQLite?

I get an error when I run my emulator, and try to start reading or viewing the database..
Please see my logcat at the bottum of this page!
I have a Database activity, a SQLView activity, and an SQLite activity.
The database activity is to run the database, the SQLView activity to view the database, and the last one, my SQLite activity is to wrie to my database.
I use SQLiteAssetHelper, and my .rar file is in my assets/databases/Voedsel.rar .
This are my activities:
My database activity:
package com.jacob.eindproject;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.database.sqlite.SQLiteDatabase.CursorFactory;
import java.sql.*;
import com.readystatesoftware.sqliteasset.SQLiteAssetHelper;
public class Database extends SQLiteAssetHelper {
public static final String KEY_PRODUCT = "Product";
public static final String KEY_EENHEID = "Eenheid";
public static final String KEY_KCAL = "Kcal";
private static final String DATABASE_NAME = "Voedsel";
private static final String DATABASE_TABLE = "Voeding";
private static final int DATABASE_VERSION = 1;
private DbHelper ourHelper;
private Context Context;
private SQLiteDatabase ourDatabase;
private static class DbHelper extends SQLiteAssetHelper{
public DbHelper(Context context) {
super(context, DATABASE_NAME, context.getExternalFilesDir(null).getAbsolutePath(), null, DATABASE_VERSION);
// TODO Auto-generated constructor stub
}
}
#Override
public void onUpgrade(SQLiteDatabase Voedsel, int oldVersion, int newVersion) {
Voedsel.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLE);
onCreate(Voedsel);
}
public Database(Context context){
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
public Database open() throws SQLException{
ourHelper = new DbHelper(Context);
ourDatabase = ourHelper.getWritableDatabase();
return this;
}
public void close() {
ourHelper.close();
}
public long createEntry(String product, String kcal, String eenheid) {
ContentValues cv = new ContentValues();
cv.put(KEY_PRODUCT, product);
cv.put(KEY_EENHEID, eenheid);
cv.put(KEY_KCAL, kcal);
return ourDatabase.insert(DATABASE_TABLE, null, cv);
}
public String getData() {
// TODO Auto-generated method stub
String[] columns = new String[]{ KEY_PRODUCT, KEY_EENHEID, KEY_KCAL};
Cursor c = ourDatabase.query(DATABASE_TABLE, columns, null, null, null, null, null);
String result = "";
int iProduct = c.getColumnIndex(KEY_PRODUCT);
int iEenheid = c.getColumnIndex(KEY_EENHEID);
int iKcal = c.getColumnIndex(KEY_KCAL);
for (c.moveToFirst(); !c.isAfterLast(); c.moveToNext()){
result = result + c.getString(iProduct) + " " + c.getString(iEenheid) + " " + c.getString(iKcal) + "\n";
}
return result;
}
public void close(Database database) {
// TODO Auto-generated method stub
}
}
My SQLite activity:
public class SQLite extends Activity implements View.OnClickListener {
Button sqlUpdate, sqlView;
EditText sqlVoeding, sqlKcal, sqlEenheid;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.sqllite);
sqlUpdate = (Button) findViewById(R.id.bSQLUpdate);
sqlVoeding = (EditText) findViewById(R.id.etSQLVoeding);
sqlEenheid = (EditText) findViewById(R.id.etSQLEenheid);
sqlKcal = (EditText) findViewById(R.id.etSQLKcal);
sqlView = (Button) findViewById(R.id.bSQLopenView);
sqlView.setOnClickListener((android.view.View.OnClickListener) this);
sqlUpdate.setOnClickListener((android.view.View.OnClickListener) this);
}
public void onClick(View arg0) {
switch (arg0.getId()) {
case R.id.bSQLUpdate:
boolean didItWork = true;
try{
String voeding = sqlVoeding.getText().toString();
String Kcal = sqlKcal.getText().toString();
String eenheid = sqlEenheid.getText().toString();
Database entry = new Database(SQLite.this);
entry.open();
entry.createEntry(voeding, Kcal, eenheid);
entry.close();
}catch (Exception e ){
didItWork = false;
}finally{
if (didItWork){
Dialog d = new Dialog(this);
d.setTitle("Heak Yeay");
TextView tv = new TextView(this);
tv.setText("Succes");
d.setContentView(tv);
d.show();
}
}
break;
case R.id.bSQLopenView:
Intent i = new Intent(this, SQLView.class);
startActivity(i);
}
}
public void onClick(DialogInterface arg0, int arg1) {
// TODO Auto-generated method stub
}
}
And the SQLView activity:
public class SQLView extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.sqlview);
TextView tv = (TextView) findViewById(R.id.tvSQLinfo);
Database info = new Database(this);
info.open();
String data = info.getData();
info.close();
tv.setText(data);
}
}
This is my logcat error when I click the SQLView activity:
12-16 14:28:26.883: E/AndroidRuntime(1170): FATAL EXCEPTION: main
12-16 14:28:26.883: E/AndroidRuntime(1170): java.lang.NoClassDefFoundError: com.jacob.eindproject.Database
12-16 14:28:26.883: E/AndroidRuntime(1170): at com.jacob.eindproject.SQLView.onCreate(SQLView.java:14)
12-16 14:28:26.883: E/AndroidRuntime(1170): at android.app.Activity.performCreate(Activity.java:5133)
12-16 14:28:26.883: E/AndroidRuntime(1170): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
12-16 14:28:26.883: E/AndroidRuntime(1170): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
12-16 14:28:26.883: E/AndroidRuntime(1170): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
12-16 14:28:26.883: E/AndroidRuntime(1170): at android.app.ActivityThread.access$600(ActivityThread.java:141)
12-16 14:28:26.883: E/AndroidRuntime(1170): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
12-16 14:28:26.883: E/AndroidRuntime(1170): at android.os.Handler.dispatchMessage(Handler.java:99)
12-16 14:28:26.883: E/AndroidRuntime(1170): at android.os.Looper.loop(Looper.java:137)
12-16 14:28:26.883: E/AndroidRuntime(1170): at android.app.ActivityThread.main(ActivityThread.java:5103)
12-16 14:28:26.883: E/AndroidRuntime(1170): at java.lang.reflect.Method.invokeNative(Native Method)
12-16 14:28:26.883: E/AndroidRuntime(1170): at java.lang.reflect.Method.invoke(Method.java:525)
12-16 14:28:26.883: E/AndroidRuntime(1170): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
12-16 14:28:26.883: E/AndroidRuntime(1170): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
12-16 14:28:26.883: E/AndroidRuntime(1170): at dalvik.system.NativeStart.main(Native Method)
And this is my error when I click my 'write' activity:
12-16 14:27:35.913: E/AndroidRuntime(999): FATAL EXCEPTION: main
12-16 14:27:35.913: E/AndroidRuntime(999): java.lang.NoClassDefFoundError: com.jacob.eindproject.Database
12-16 14:27:35.913: E/AndroidRuntime(999): at com.jacob.eindproject.SQLite.onClick(SQLite.java:45)
12-16 14:27:35.913: E/AndroidRuntime(999): at android.view.View.performClick(View.java:4240)
12-16 14:27:35.913: E/AndroidRuntime(999): at android.view.View$PerformClick.run(View.java:17721)
12-16 14:27:35.913: E/AndroidRuntime(999): at android.os.Handler.handleCallback(Handler.java:730)
12-16 14:27:35.913: E/AndroidRuntime(999): at android.os.Handler.dispatchMessage(Handler.java:92)
12-16 14:27:35.913: E/AndroidRuntime(999): at android.os.Looper.loop(Looper.java:137)
12-16 14:27:35.913: E/AndroidRuntime(999): at android.app.ActivityThread.main(ActivityThread.java:5103)
12-16 14:27:35.913: E/AndroidRuntime(999): at java.lang.reflect.Method.invokeNative(Native Method)
12-16 14:27:35.913: E/AndroidRuntime(999): at java.lang.reflect.Method.invoke(Method.java:525)
12-16 14:27:35.913: E/AndroidRuntime(999): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
12-16 14:27:35.913: E/AndroidRuntime(999): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
12-16 14:27:35.913: E/AndroidRuntime(999): at dalvik.system.NativeStart.main(Native Method)
Hopefully someone can help me fix my error. Thank you all in advance for taking your time.
Jacob.

I don't think you've added the SQLiteAssetHelper library to your project correctly.
You must ensure that the build path for your project is correct, and all referenced libraries are selected.
Right click on your project and select 'Properties'
Click on 'Android'
Make sure your SQLiteAssetHelper library is selected

How come this Fragment crashes my program on rotate?

I have the following Fragment. It works completely fine, until I rotate my device. It then crashes with errors about the RadarSelectionFragment failing to Instantiate. The code for the FragmentPagerAdapter and the Fragment in question are below:
#SuppressLint("DefaultLocale")
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter() {
// Do some stuff
}
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
if (position == 0) {
Fragment fragment = new RadarSelectionFragment();
Bundle args = new Bundle();
args.putInt(RadarSelectionFragment.ARG_SECTION_NUMBER, position + 1);
fragment.setArguments(args);
return fragment;
} else if (position == 1) {
Fragment fragment = new WeatherMapDisplayFragment();
Bundle args = new Bundle();
args.putInt(WeatherMapDisplayFragment.ARG_SECTION_NUMBER, position + 1);
fragment.setArguments(args);
return fragment;
} else {
Fragment tf = new RadarSelectionFragment();
return tf;
}
}
#Override
public int getCount() {
return 2;
}
#SuppressLint("DefaultLocale")
#Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return getString(R.string.title_section1).toUpperCase();
case 1:
return getString(R.string.title_section2).toUpperCase();
}
return null;
}
}
public static class RadarSelectionFragment extends Fragment {
public static final String ARG_SECTION_NUMBER = "section_number";
public RadarSelectionFragment() {}
#Override
public final View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
if (getArguments().getInt(ARG_SECTION_NUMBER) == 1) {
return inflater.inflate(R.layout.radars, container, false);
} else {
return container;
}
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(true);
}
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
setRetainInstance(true);
...
}
public void onNothingSelected(AdapterView<?> parent) {
// Another interface callback
}
});
}
}
public class WeatherMapDisplayFragment extends Fragment {
public static final String ARG_SECTION_NUMBER = "section_number";
public WeatherMapDisplayFragment() {
}
#Override
public final View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
if (getArguments().getInt(ARG_SECTION_NUMBER) == 2) {
return inflater.inflate(R.layout.display, container, false);
} else {
return container;
}
}
}
I have tried Googling the problem, but all I keep turning up are various solutions pertaining to ensuring that the Fragment Class is static (Which I've done).
I am relatively new to Android programming, so if you answer, could you please either post an example and/or link to other examples if you have the time.
Thanks in advance!
EDIT 1: Stacktrace
01-21 13:46:31.907: E/AndroidRuntime(1101): FATAL EXCEPTION: main
01-21 13:46:31.907: E/AndroidRuntime(1101): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.radarau/com.example.radarau.MainActivity}: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.example.radarau.MainActivity$WeatherMapDisplayFragment: make sure class name exists, is public, and has an empty constructor that is public
01-21 13:46:31.907: E/AndroidRuntime(1101): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
01-21 13:46:31.907: E/AndroidRuntime(1101): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
01-21 13:46:31.907: E/AndroidRuntime(1101): at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3692)
01-21 13:46:31.907: E/AndroidRuntime(1101): at android.app.ActivityThread.access$700(ActivityThread.java:141)
01-21 13:46:31.907: E/AndroidRuntime(1101): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1240)
01-21 13:46:31.907: E/AndroidRuntime(1101): at android.os.Handler.dispatchMessage(Handler.java:99)
01-21 13:46:31.907: E/AndroidRuntime(1101): at android.os.Looper.loop(Looper.java:137)
01-21 13:46:31.907: E/AndroidRuntime(1101): at android.app.ActivityThread.main(ActivityThread.java:5039)
01-21 13:46:31.907: E/AndroidRuntime(1101): at java.lang.reflect.Method.invokeNative(Native Method)
01-21 13:46:31.907: E/AndroidRuntime(1101): at java.lang.reflect.Method.invoke(Method.java:511)
01-21 13:46:31.907: E/AndroidRuntime(1101): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
01-21 13:46:31.907: E/AndroidRuntime(1101): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
01-21 13:46:31.907: E/AndroidRuntime(1101): at dalvik.system.NativeStart.main(Native Method)
01-21 13:46:31.907: E/AndroidRuntime(1101): Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.example.radarau.MainActivity$WeatherMapDisplayFragment: make sure class name exists, is public, and has an empty constructor that is public
01-21 13:46:31.907: E/AndroidRuntime(1101): at android.support.v4.app.Fragment.instantiate(Fragment.java:405)
01-21 13:46:31.907: E/AndroidRuntime(1101): at android.support.v4.app.FragmentState.instantiate(Fragment.java:97)
01-21 13:46:31.907: E/AndroidRuntime(1101): at android.support.v4.app.FragmentManagerImpl.restoreAllState(FragmentManager.java:1767)
01-21 13:46:31.907: E/AndroidRuntime(1101): at android.support.v4.app.FragmentActivity.onCreate(FragmentActivity.java:208)
01-21 13:46:31.907: E/AndroidRuntime(1101): at com.example.radarau.MainActivity.onCreate(MainActivity.java:35)
01-21 13:46:31.907: E/AndroidRuntime(1101): at android.app.Activity.performCreate(Activity.java:5104)
01-21 13:46:31.907: E/AndroidRuntime(1101): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
01-21 13:46:31.907: E/AndroidRuntime(1101): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
01-21 13:46:31.907: E/AndroidRuntime(1101): ... 12 more
01-21 13:46:31.907: E/AndroidRuntime(1101): Caused by: java.lang.InstantiationException: can't instantiate class com.example.radarau.MainActivity$WeatherMapDisplayFragment; no empty constructor
01-21 13:46:31.907: E/AndroidRuntime(1101): at java.lang.Class.newInstanceImpl(Native Method)
01-21 13:46:31.907: E/AndroidRuntime(1101): at java.lang.Class.newInstance(Class.java:1319)
01-21 13:46:31.907: E/AndroidRuntime(1101): at android.support.v4.app.Fragment.instantiate(Fragment.java:394)
01-21 13:46:31.907: E/AndroidRuntime(1101): ... 19 more

Your logcat says
Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.example.radarau.MainActivity$WeatherMapDisplayFragment: make sure class name exists, is public, and has an empty constructor that is public
You should provide a public Default constructor for that
public WeatherMapDisplayFragment() {
// Do some stuff
}
If that class is nested, make that class to static class and provide a public default constructor or move that fragment into a new java file.

NullPointer with SQLite creation - Android (java)

I am getting a NullPointerException in my SQLite database. I am calling the DatabaseHelper class in Results.java by doing this:
public class Results extends Activity {
...
DatabaseHelper dh;
public void onCreate(Bundle savedInstanceState) {
...
dh = new DatabaseHelper(this);
}
public void showResults() {
...
dh.insert(1, score, percentage);
}
}
DatabaseHelper.java
public class DatabaseHelper extends SQLiteOpenHelper {
private static final int DATABASE_VERSION = 1;
private static final String DB_NAME = "test1";
private static final String DB_PATH = "/data/data/com.example.test/databases/";
private static final String TABLE = "HighscoresList";
// Table columns names.
private static final String RANK = "rank";
private static final String SCORE = "score";
private static final String PERCENTAGE = "percentage";
private SQLiteDatabase myDB;
public DatabaseHelper(Context context) {
super(context, DB_NAME, null, DATABASE_VERSION);
myDB = getWritableDatabase(); //Line 25
}
//Insert new record.
public long insert(int rank, long score, int percentage) {
ContentValues values = new ContentValues();
values.put(RANK, rank);
values.put(SCORE, score);
values.put(PERCENTAGE, percentage);
return myDB.insert(TABLE, null, values);
}
//Delete record.
public boolean delete(long score) {
//Need this?
return true;
}
public void openDatabase() throws SQLException {
//Open the database.
String myPath = DB_PATH + DB_NAME;
myDB = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY);
}
public SQLiteDatabase getDatabase(){
return this.myDB;
}
public synchronized void close() {
if(myDB != null) {
myDB.close();
}
super.close();
}
public void onCreate(SQLiteDatabase db) {
myDB.execSQL("CREATE TABLE " + TABLE + " (" //Line 62
+ RANK + " INTEGER,"
+ SCORE + " LONG,"
+ PERCENTAGE + " INTEGER"
+ ");");
}
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {}
}
LogCat output
12-18 22:01:53.210: E/AndroidRuntime(6313): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.test/com.example.test.Results}: java.lang.NullPointerException
12-18 22:01:53.210: E/AndroidRuntime(6313): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
12-18 22:01:53.210: E/AndroidRuntime(6313): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
12-18 22:01:53.210: E/AndroidRuntime(6313): at android.app.ActivityThread.access$600(ActivityThread.java:130)
12-18 22:01:53.210: E/AndroidRuntime(6313): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
12-18 22:01:53.210: E/AndroidRuntime(6313): at android.os.Handler.dispatchMessage(Handler.java:99)
12-18 22:01:53.210: E/AndroidRuntime(6313): at android.os.Looper.loop(Looper.java:137)
12-18 22:01:53.210: E/AndroidRuntime(6313): at android.app.ActivityThread.main(ActivityThread.java:4745)
12-18 22:01:53.210: E/AndroidRuntime(6313): at java.lang.reflect.Method.invokeNative(Native Method)
12-18 22:01:53.210: E/AndroidRuntime(6313): at java.lang.reflect.Method.invoke(Method.java:511)
12-18 22:01:53.210: E/AndroidRuntime(6313): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
12-18 22:01:53.210: E/AndroidRuntime(6313): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
12-18 22:01:53.210: E/AndroidRuntime(6313): at dalvik.system.NativeStart.main(Native Method)
12-18 22:01:53.210: E/AndroidRuntime(6313): Caused by: java.lang.NullPointerException
12-18 22:01:53.210: E/AndroidRuntime(6313): at com.example.test.DatabaseHelper.onCreate(DatabaseHelper.java:62)
12-18 22:01:53.210: E/AndroidRuntime(6313): at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:252)
12-18 22:01:53.210: E/AndroidRuntime(6313): at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:164)
12-18 22:01:53.210: E/AndroidRuntime(6313): at com.example.test.DatabaseHelper.<init>(DatabaseHelper.java:25)
12-18 22:01:53.210: E/AndroidRuntime(6313): at com.example.test.Results.onCreate(Results.java:33)
12-18 22:01:53.210: E/AndroidRuntime(6313): at android.app.Activity.performCreate(Activity.java:5008)
12-18 22:01:53.210: E/AndroidRuntime(6313): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
12-18 22:01:53.210: E/AndroidRuntime(6313): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
12-18 22:01:53.210: E/AndroidRuntime(6313): ... 11 more
What is causing the NPE?
Also, any help on code structure for this SQLite highscores I am trying to implement would be helpful as well.