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Android

Posted by Jerry chen
Jerry chen
Courses Plus Student 3,407 Points

Getting this error message Unfortunately FunFactsActivity Stopped Working

i am getting these errors inside the LogCat

10-30 14:01:37.030 885-885/com.teamtreehouse.funfacts E/AndroidRuntime﹕ FATAL EXCEPTION: main Process: com.teamtreehouse.funfacts, PID: 885 java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.teamtreehouse.funfacts/com.teamtreehouse.funfacts.FunFactsActivity}: java.lang.NullPointerException at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2121) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) at android.app.ActivityThread.access$800(ActivityThread.java:135) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5017) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.NullPointerException at android.app.Activity.findViewById(Activity.java:1884) at com.teamtreehouse.funfacts.FunFactsActivity.<init>(FunFactsActivity.java:16) at java.lang.Class.newInstanceImpl(Native Method) at java.lang.Class.newInstance(Class.java:1208) at android.app.Instrumentation.newActivity(Instrumentation.java:1061) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2112)             at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)             at android.app.ActivityThread.access$800(ActivityThread.java:135)             at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)             at android.os.Handler.dispatchMessage(Handler.java:102)             at android.os.Looper.loop(Looper.java:136)             at android.app.ActivityThread.main(ActivityThread.java:5017)             at java.lang.reflect.Method.invokeNative(Native Method)             at java.lang.reflect.Method.invoke(Method.java:515)             at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)             at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)             at dalvik.system.NativeStart.main(Native Method) 10-30 14:01:42.550 885-885/com.teamtreehouse.funfacts I/Process﹕ Sending signal. PID: 885 SIG: 9

Seth Kroger
Seth Kroger
56,416 Points

Can you post your code? According to the stack trace the error is occuring at line 16 of FunFactsActivity.java.

2 Answers

Ben Deitch
STAFF
Ben Deitch
Treehouse Teacher
Ben Deitch
Ben Deitch
Treehouse Teacher

You're calling findViewByID(...) before setContentView(...) has been called.

Jerry chen
PLUS
Jerry chen
Courses Plus Student 3,407 Points
Jerry chen
Jerry chen
Courses Plus Student 3,407 Points 
package com.teamtreehouse.funfacts;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;


public class FunFactsActivity extends Activity {
    private FactRespond newFact = new FactRespond();
    private RelativeLayout newLayout = (RelativeLayout) findViewById(R.id.FunFactsLayout);
    private Colorof nextColor = new Colorof();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_fun_facts);


        final TextView FactLabel = (TextView) findViewById(R.id.textView);
        final Button showFactButton = (Button) findViewById(R.id.button);
        View.OnClickListener listener = new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                        newLayout.setBackgroundColor(nextColor.getColor());
                        showFactButton.setTextColor(nextColor.getColor());
                      FactLabel.setText(newFact.getFact());
            }
        };
        showFactButton.setOnClickListener(listener);
        Toast.makeText(this,"all Right",Toast.LENGTH_LONG).show();
    }



}

Here's the code of funfacts activity