android - java.lang.NullPointerException with context.getSharedPreferences(STORAGE_NAME, 0) -


i have created class working sharedpreferences. in activity, trying add item , following error...

06-05 17:01:53.950: e/androidruntime(3488): fatal exception: main 06-05 17:01:53.950: e/androidruntime(3488): java.lang.nullpointerexception 06-05 17:01:53.950: e/androidruntime(3488):     @ com.xcxcxc.helpers.prefs.init(prefs.java:16) 06-05 17:01:53.950: e/androidruntime(3488):     @ com.xcxcxc.helpers.prefs.addstringproperty(prefs.java:30) 06-05 17:01:53.950: e/androidruntime(3488):     @ com.xcxcxc.usersadapter.splashactivity$1.callback(splashactivity.java:78) 06-05 17:01:53.950: e/androidruntime(3488):     @ com.xcxcxc.usersadapter.splashactivity$1.callback(splashactivity.java:1)

this code handling sharedpreferences...

import android.content.context; import android.content.sharedpreferences;  public class prefs {      public static final string storage_name = "applicationprefs";      private static sharedpreferences settings = null;     private static sharedpreferences.editor editor = null;     private static context context = null;      public static void init(context cntxt) {         context = cntxt;     }      private static void init() {         settings = context.getsharedpreferences(storage_name, 0);         editor = settings.edit();     }      /* string values */     public static void addstringproperty(string name, string value) {         if (settings == null || editor == null) {             init();         }         editor.putstring(name, value);         editor.commit();     }      public static string getstringproperty(string name) {         if (settings == null || editor == null) {             init();         }         return settings.getstring(name, null);     } }

this code calling in activity...

prefs.addstringproperty("client_id", "1jdkv9sdfj8sf63rjs");

looks context null. set context before addstringproperty(..)

prefs.init(getapplicationcontext()); prefs.addstringproperty("client_id", "1jdkv9sdfj8sf63rjs");

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