integrate facebook login with android app -


hi trying integrate facebook login android application. have created app on facebook , have added app id strings.xml have set following permissions in manifest file

<uses-permission android:name="android.permission.internet" /> <meta-data android:name="com.facebook.sdk.applicationid" android:value="@string/facebook_app_id"/>  <activity android:name="com.facebook.facebookactivity"             android:configchanges=                 "keyboard|keyboardhidden|screenlayout|screensize|orientation"             android:theme="@android:style/theme.translucent.notitlebar"             android:label="@string/app_name" />

i have added key hash facebook developer console , have added login button xml file. 

<com.facebook.login.widget.loginbutton         android:id="@+id/fb_login_button"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_gravity="center_horizontal"         android:layout_margintop="30dp"         android:layout_marginbottom="30dp" />

when try run app fails following error

java.lang.exceptionininitializererror             @ java.lang.reflect.constructor.newinstance(native method)             @ java.lang.reflect.constructor.newinstance(constructor.java:288)             @ android.view.layoutinflater.createview(layoutinflater.java:607)             @ android.view.layoutinflater.createviewfromtag(layoutinflater.java:743)             @ android.view.layoutinflater.rinflate(layoutinflater.java:806)             @ android.view.layoutinflater.inflate(layoutinflater.java:504)             @ android.view.layoutinflater.inflate(layoutinflater.java:414)             @ android.view.layoutinflater.inflate(layoutinflater.java:365)             @ com.savale.dejalearn.baseactivity.actionbarinit(baseactivity.java:96)             @ com.savale.dejalearn.baseactivity.oncreate(baseactivity.java:83)             @ android.app.activity.performcreate(activity.java:5933)             @ android.app.instrumentation.callactivityoncreate(instrumentation.java:1105)             @ android.app.activitythread.performlaunchactivity(activitythread.java:2282)             @ android.app.activitythread.handlelaunchactivity(activitythread.java:2389)             @ android.app.activitythread.access$900(activitythread.java:147)             @ android.app.activitythread$h.handlemessage(activitythread.java:1296)             @ android.os.handler.dispatchmessage(handler.java:102)             @ android.os.looper.loop(looper.java:135)             @ android.app.activitythread.main(activitythread.java:5254)             @ java.lang.reflect.method.invoke(native method)             @ java.lang.reflect.method.invoke(method.java:372)             @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:898)             @ com.android.internal.os.zygoteinit.main(zygoteinit.java:693)      caused by: null             @ com.facebook.internal.validate.sdkinitialized(validate.java:99)             @ com.facebook.facebooksdk.getcallbackrequestcodeoffset(facebooksdk.java:735)             @ com.facebook.internal.callbackmanagerimpl$requestcodeoffset.torequestcode(callbackmanagerimpl.java:109)             @ com.facebook.login.widget.loginbutton.<clinit>(loginbutton.java:58)             at java.lang.reflect.constructor.newinstance(native method)             at java.lang.reflect.constructor.newinstance(constructor.java:288)             at android.view.layoutinflater.createview(layoutinflater.java:607)             at android.view.layoutinflater.createviewfromtag(layoutinflater.java:743)             at android.view.layoutinflater.rinflate(layoutinflater.java:806)             at android.view.layoutinflater.inflate(layoutinflater.java:504)             at android.view.layoutinflater.inflate(layoutinflater.java:414)             at android.view.layoutinflater.inflate(layoutinflater.java:365)             at com.savale.dejalearn.baseactivity.actionbarinit(baseactivity.java:96)             at com.savale.dejalearn.baseactivity.oncreate(baseactivity.java:83)             at android.app.activity.performcreate(activity.java:5933)             at android.app.instrumentation.callactivityoncreate(instrumentation.java:1105)             at android.app.activitythread.performlaunchactivity(activitythread.java:2282)             at android.app.activitythread.handlelaunchactivity(activitythread.java:2389)             at android.app.activitythread.access$900(activitythread.java:147)             at android.app.activitythread$h.handlemessage(activitythread.java:1296)             at android.os.handler.dispatchmessage(handler.java:102)             at android.os.looper.loop(looper.java:135)             at android.app.activitythread.main(activitythread.java:5254)             at java.lang.reflect.method.invoke(native method)             at java.lang.reflect.method.invoke(method.java:372)             at com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:898)             at com.android.internal.os.zygoteinit.main(zygoteinit.java:693)

this error occurs when layout has login button inflated. says null making difficult me debug error. appreciated.

thanks

you need call facebooksdk.sdkinitialize(context) before using sdk features.


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