Keep getting this error i have no idea

Question

    TextView drawerName = (TextView) findViewById(R.id.drawerName);
    TextView drawerEmail = (TextView) findViewById(R.id.drawerEmail);
    CircleImageView drawerAvatar = (CircleImageView) findViewById(R.id.drawerAvatar);

    drawerName.setText(personName);
    drawerEmail.setText(personEmail);

FATAL EXCEPTION: main Process: com.mje.dev.liqourstore, PID: 1537 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.mje.dev.liqourstore/com.mje.dev.liqourstore.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3149) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3248) at android.app.ActivityThread.access$1000(ActivityThread.java:197) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1681) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:145) at android.app.ActivityThread.main(ActivityThread.java:6872) 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:1404) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199) Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference at com.mje.dev.liqourstore.MainActivity.onCreate(MainActivity.java:146) at android.app.Activity.performCreate(Activity.java:6550) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1120) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3102) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3248) at android.app.ActivityThread.access$1000(ActivityThread.java:197) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1681) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:145) at android.app.ActivityThread.main(ActivityThread.java:6872) 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:1404) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)

Possible duplicate of [What is a Null Pointer Exception, and how do I fix it?](http://stackoverflow.com/questions/218384/what-is-a-null-pointer-exception-and-how-do-i-fix-it) — starkshang, Jan 26 '16 at 07:56
from you error log,we can see your drawerName or drawerEmail is null,please check these first. — starkshang, Jan 26 '16 at 07:56
I think he's just a new person come to Android. Post a link like "What is null pointer exception" doesn't help him. Close this post doesn't help him either. And nonsense,too. He correctly post a code that he sees error. — hqt, Jan 26 '16 at 11:50

score 0 · Answer 1 · answered Jan 26 '16 at 07:56

0

It looks like that you haven't set the View of Activity by setting contentView as setContentView. Furthermore, please also check that setContentView layout also have the textview you are fetching.

hope this helps.

answered Jan 26 '16 at 07:56

Mustansar Saeed

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I just found out that i had ids that were conflicting with the new design library. Thanks though. – Wilfred Waihura Jan 26 '16 at 08:13

score 0 · Accepted Answer · answered Jan 26 '16 at 11:43

    TextView drawerName = (TextView) navigationView.getHeaderView(0).findViewById(R.id.navDrawerName);
    TextView drawerEmail = (TextView) navigationView.getHeaderView(0).findViewById(R.id.navDrawerEmail);
    CircleImageView  drawerAvatar = (CircleImageView) navigationView.getHeaderView(0).findViewById(R.id.avatar);

Keep getting this error i have no idea

2 Answers2