twitterLoginButton.performClick(); not working in android

android
fabric

#1

I tried to perform click programmatic way, But app getting crash.

twitterLoginButton = (TwitterLoginButton) findViewById(R.id.twitterLogin);

        twitterLoginButton.performClick();

        twitterLoginButton.setPressed(true);

        twitterLoginButton.invalidate();
        //Adding callback to the button
        twitterLoginButton.setCallback(new Callback<TwitterSession>() {
            @Override
            public void success(Result<TwitterSession> result) {
                //If login succeeds passing the Calling the login method and passing Result object
                twitterLogin(result);
            }

            @Override
            public void failure(TwitterException exception) {
                //If failure occurs while login handle it here
                Log.d("TwitterKit", "Login with Twitter failure", exception);
            }
        });
        twitterLoginButton.setPressed(false);

        twitterLoginButton.invalidate();

FATAL EXCEPTION: main
Process: com.tettares.whatdoieat, PID: 17306
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.tettares.whatdoieat/com.tettares.whatdoieat.login.FBOrTwitterLoginActivity}: java.lang.IllegalArgumentException: Callback must not be null.
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2339)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2413)
at android.app.ActivityThread.access$800(ActivityThread.java:155)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1317)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5343)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700)
Caused by: java.lang.IllegalArgumentException: Callback must not be null.
at com.twitter.sdk.android.core.identity.TwitterAuthClient.authorize(TwitterAuthClient.java:95)
at com.twitter.sdk.android.core.identity.TwitterLoginButton$LoginClickListener.onClick(TwitterLoginButton.java:161)
at android.view.View.performClick(View.java:4785)


#2

You have to set the callback before calling Button#performClick().


#3