Getting Crash When trying to initiate an Activity

Question

Almost all of the current navigation in the application is working perfectly fine and when doing the same things for other parts i navigate with.

I am getting this error when trying to navigate from one activity to another:

FATAL EXCEPTION: main
              Process: com.package, PID: 15338
              java.lang.RuntimeException: Unable to start activity ComponentInfo{com.package/ui.activity.AccountActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getId()' on a null object reference
                  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
                  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
                  at android.app.ActivityThread.-wrap11(ActivityThread.java)
                  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
                  at android.os.Handler.dispatchMessage(Handler.java:102)
                  at android.os.Looper.loop(Looper.java:148)
                  at android.app.ActivityThread.main(ActivityThread.java:5417)
                  at java.lang.reflect.Method.invoke(Native Method)
                  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
               Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getId()' on a null object reference
                  at ui.activity.BaseActivity.setInitialFragment(BaseActivity.java:181)
                  at ui.activity.BaseActivity.setInitialFragment(BaseActivity.java:174)
                  at ui.activity.BaseActivity.setInitialFragment(BaseActivity.java:160)
                  at ui.activity.AccountActivity.setInitialFragment(AccountActivity.java:38)
                  at ui.activity.BaseActivity.onCreate(BaseActivity.java:56)
                  at android.app.Activity.performCreate(Activity.java:6237)
                  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
                  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
                  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
                  at android.app.ActivityThread.-wrap11(ActivityThread.java) 
                  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
                  at android.os.Handler.dispatchMessage(Handler.java:102) 
                  at android.os.Looper.loop(Looper.java:148) 
                  at android.app.ActivityThread.main(ActivityThread.java:5417) 
                  at java.lang.reflect.Method.invoke(Native Method) 
                  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 

I can track where the Null reference is being made and have tried a few things to try and bypass it but they all crash the application.

Here is the block where i initiate the activity:

@Override
public void onMyAccountOptionSelected() {
    Intent intent = new Intent(this, AccountActivity.class);
    startActivity(intent);
}

Then it gets caught here on view.getId(), this one is in baseActivity:

private void setInitialFragment(View view, Fragment fragment) {
    if (this.getCurrentFragment() == null) {
        FragmentManager fragmentManager = this.getSupportFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        fragmentTransaction.replace(view.getId(), fragment).commit();
    }
}

I am initially calling setInitialFragment() in AccountActivity which extends my baseActivity:

 @Override
protected void setInitialFragment() {

    fragment = (AccountFragment) AccountFragment.newInstance();
    setInitialFragment(fragment);

}

As you can see above there is now an AccountFragment, in this class i extend from an abstractFragment and have a method to declare a newInstance:

public static Fragment newInstance() {

    AccountFragment fragment = new AccountFragment();
    return fragment;
}

I cant find anywhere else where it may be affecting the process used for navigating to this activity. I am hoping to find a method to make a quick fix or to find a more appropriate way to solve this.

Any help is much appreciated!

Answer 1

You didn't provide us with all the information needed to be really helpfull.

i'm imaging that your setInitialFragment in your AccountActivity would be something like this:

public class AccountActivity extends BaseActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        setContentView(R.layout.container);
        AccountFragment fragment = AccountFragment.getInstance(); 
        setInitialFragment(fragment);
    } 

}

Based on what you posted, your are calling 2 different methods, this:

setInitialFragment(Fragment fragment);

is not the same as this

setInitialFragment(View view, Fragment fragment)