Nullpointer when loading boolean from strings.xml

Issue

I've added a boolean var to my strings.xml, but when I am trying to retrieve it with the following code.

boolean custom = getResources().getBoolean(R.bool.customMade);

I am getting a nullpointerexception:

06-13 11:01:45.983: W/System.err(11951): java.lang.NullPointerException
06-13 11:01:45.983: W/System.err(11951):    at android.content.ContextWrapper.getResources(ContextWrapper.java:89)
06-13 11:01:45.993: W/System.err(11951):    at android.view.ContextThemeWrapper.getResources(ContextThemeWrapper.java:78)
06-13 11:01:46.003: W/System.err(11951):    at com.koeriers.tools.ConfigFeatures.<init>(ConfigFeatures.java:32)
06-13 11:01:46.003: W/System.err(11951):    at com.koeriers.erasmus.actLogin.<init>(actLogin.java:50)
06-13 11:01:46.003: W/System.err(11951):    at java.lang.Class.newInstanceImpl(Native Method)
06-13 11:01:46.013: W/System.err(11951):    at java.lang.Class.newInstance(Class.java:1319)
06-13 11:01:46.013: W/System.err(11951):    at android.app.Instrumentation.newActivity(Instrumentation.java:1071)
06-13 11:01:46.013: W/System.err(11951):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2163)
06-13 11:01:46.013: W/System.err(11951):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2296)
06-13 11:01:46.023: W/System.err(11951):    at android.app.ActivityThread.access$700(ActivityThread.java:151)
06-13 11:01:46.023: W/System.err(11951):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1281)
06-13 11:01:46.023: W/System.err(11951):    at android.os.Handler.dispatchMessage(Handler.java:99)
06-13 11:01:46.023: W/System.err(11951):    at android.os.Looper.loop(Looper.java:137)
06-13 11:01:46.033: W/System.err(11951):    at android.app.ActivityThread.main(ActivityThread.java:5293)
06-13 11:01:46.033: W/System.err(11951):    at java.lang.reflect.Method.invokeNative(Native Method)
06-13 11:01:46.033: W/System.err(11951):    at java.lang.reflect.Method.invoke(Method.java:511)
06-13 11:01:46.033: W/System.err(11951):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
06-13 11:01:46.033: W/System.err(11951):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
06-13 11:01:46.043: W/System.err(11951):    at dalvik.system.NativeStart.main(Native Method)

this is where I add the var in my strings.xml:

<resources>
<bool name="customMade">true</bool>
</resources>

The strings.xml is localized in the res/values/strings.xml folder as usual. Anyone who can see what I am doing wrong? Thanks in advance

@edit:

it seems that I've posted not enough code, so here is the whole class in which I trying to retrieve the bool var from my resources:

import android.app.Activity;
import android.content.res.Resources;
import android.database.Cursor;

public class ConfigFeatures extends Activity{

//public vars
Cursor mCursor;
public String HeaderIconColor;
public String HeaderStateColor;
public String BackgroundColor;
public String TextColor;
public String DateColor;
public String OrderColorOne;
public String OrderColorTwo;
public int Mijlpaal1;
public int Mijlpaal2;
public Boolean Ritten;
public Boolean Handtekening;
public Boolean Foto;
public Boolean WijzigOrderDetail;
public Boolean Firma;
public Boolean LocatieGegevens;
public int LocatieInterval;

public ConfigFeatures(){
    //initialize the vars

    try {
        boolean custom = getResources().getBoolean(R.bool.customMade);
        if (custom) {
            DefaultSettings();
        } else {
            try{
                mCursor = Session.globalTDBAdapter().getData("tbl_Setting", new String[]{TDBAdapterSingleton.KEY_HEADERICONCOLOR,
                        TDBAdapterSingleton.KEY_HEADERSTATECOLOR,TDBAdapterSingleton.KEY_BACKGROUNDCOLOR,
                        TDBAdapterSingleton.KEY_TEXTCOLOR,TDBAdapterSingleton.KEY_DATECOLOR,
                        TDBAdapterSingleton.KEY_ORDERCOLORONE,TDBAdapterSingleton.KEY_ORDERCOLORTWO,
                        TDBAdapterSingleton.KEY_MIJLPAAL1, TDBAdapterSingleton.KEY_MIJLPAAL2,
                        TDBAdapterSingleton.KEY_RITTEN, TDBAdapterSingleton.KEY_HANDTEKENING,
                        TDBAdapterSingleton.KEY_FOTO,TDBAdapterSingleton.KEY_FIRMA,
                        TDBAdapterSingleton.KEY_WIJZIGORDERDETAIL,TDBAdapterSingleton.KEY_LOCATIEGEGEVENS,
                        TDBAdapterSingleton.KEY_LOCATIEINTERVAL});

                if (mCursor == null){
                    DefaultSettings();
                } else {
                    this.HeaderIconColor = mCursor.getString(mCursor.getColumnIndexOrThrow(TDBAdapterSingleton.KEY_HEADERICONCOLOR));
                    if (this.HeaderIconColor.equals("")){
                        this.HeaderIconColor = "#FFFFFF";
                    }
                    this.HeaderStateColor = mCursor.getString(mCursor.getColumnIndexOrThrow(TDBAdapterSingleton.KEY_HEADERSTATECOLOR));
                    if (this.HeaderStateColor.equals("")){
                        this.HeaderStateColor = "#FF8000";
                    }
                    this.BackgroundColor = mCursor.getString(mCursor.getColumnIndexOrThrow(TDBAdapterSingleton.KEY_BACKGROUNDCOLOR));
                    if (this.BackgroundColor.equals("")){
                        this.BackgroundColor = "#FFFFFF";
                    }
                    this.TextColor = mCursor.getString(mCursor.getColumnIndexOrThrow(TDBAdapterSingleton.KEY_TEXTCOLOR));
                    if (this.TextColor.equals("")){
                        this.TextColor = "#000000";
                    }
                    this.DateColor = mCursor.getString(mCursor.getColumnIndexOrThrow(TDBAdapterSingleton.KEY_DATECOLOR));
                    if (this.DateColor.equals("")){
                        this.DateColor = "#808080";
                    }
                    this.OrderColorOne = mCursor.getString(mCursor.getColumnIndexOrThrow(TDBAdapterSingleton.KEY_ORDERCOLORONE));
                    if (this.OrderColorOne.equals("")){
                        this.OrderColorOne = "#EBE3E3";
                    }
                    this.OrderColorTwo = mCursor.getString(mCursor.getColumnIndexOrThrow(TDBAdapterSingleton.KEY_ORDERCOLORTWO));
                    if (this.OrderColorTwo.equals("")){
                        this.OrderColorTwo = "#FFFFFF";
                    }
                    this.Mijlpaal1 = mCursor.getInt(mCursor.getColumnIndexOrThrow(TDBAdapterSingleton.KEY_MIJLPAAL1));
                    this.Mijlpaal2 = mCursor.getInt(mCursor.getColumnIndexOrThrow(TDBAdapterSingleton.KEY_MIJLPAAL2));
                    this.Ritten = mCursor.getString(mCursor.getColumnIndexOrThrow(TDBAdapterSingleton.KEY_RITTEN)).contains("0");
                    this.Handtekening = mCursor.getString(mCursor.getColumnIndexOrThrow(TDBAdapterSingleton.KEY_HANDTEKENING)).contains("0");
                    this.Foto = mCursor.getString(mCursor.getColumnIndexOrThrow(TDBAdapterSingleton.KEY_FOTO)).contains("0");
                    this.WijzigOrderDetail = mCursor.getString(mCursor.getColumnIndexOrThrow(TDBAdapterSingleton.KEY_WIJZIGORDERDETAIL)).contains("0");
                    this.Firma = mCursor.getString(mCursor.getColumnIndexOrThrow(TDBAdapterSingleton.KEY_FIRMA)).contains("0");
                    this.LocatieGegevens = mCursor.getString(mCursor.getColumnIndexOrThrow(TDBAdapterSingleton.KEY_LOCATIEGEGEVENS)).contains("0");
                    this.LocatieInterval = mCursor.getInt(mCursor.getColumnIndexOrThrow(TDBAdapterSingleton.KEY_LOCATIEINTERVAL));
                    mCursor.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
                mCursor.close();
            } finally {
                DefaultSettings();
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
        DefaultSettings();
    }
}
public void DefaultSettings(){
    this.HeaderIconColor = "#FFFFFF";
    this.HeaderStateColor = "#3DA2C8";
    this.BackgroundColor = "#FFFFFF";
    this.TextColor = "#000000";
    this.DateColor = "#808080";
    this.OrderColorOne = "#3DA2C8";
    this.OrderColorTwo = "#FFFFFF";
    this.Mijlpaal1 = 1;
    this.Mijlpaal2 = 2;
    this.Ritten = false;
    this.Handtekening = true;
    this.Foto = true;
    this.WijzigOrderDetail = true;
    this.Firma = true;
    this.LocatieGegevens = true;
    this.LocatieInterval = 1000 * 60 * 5;
}

}

Solution

Change it to:

public ConfigFeatures(Activity activity){
    boolean custom = activity.getResources().getBoolean(R.bool.customMade);

and the activity calling ConfigFeatures() make it like this ConfigFeatures(getBaseContext()

Answered By - LuckyMe