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POjava.lang.NullPointerException at Intent
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  1. POjava.lang.NullPointerException at Intent
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    copied!<p>I am quite new to Java and Android programming, and just working on my 3rd App - however I am encountering a Problem which I am not able to solve (I already tried and researched for days).</p> <p>I have a list of Elements in a LinearLayout inside a Fragment - the Elements have a OnLongClickListener attached, with a popup showing up when the User long-presses the Element. That works fine. However, one of the Buttons in the Popup is "Edit", and when a user presses this Button, I want to start another Activity with Editing Options for this Element.</p> <p>So there comes my Problem: when I want to start the new Activity with an Intent, I get following Error:</p> <pre><code>E/AndroidRuntime: FATAL EXCEPTION: main java.lang.NullPointerException at android.app.Activity.startActivityForResult(Activity.java:3370) at android.app.Activity.startActivityForResult(Activity.java:3331) at android.app.Activity.startActivity(Activity.java:3566) at android.app.Activity.startActivity(Activity.java:3534) at at.fekle.zipmanager.start.startzipinfo(start.java:299) at at.fekle.zipmanager.start$2.onLongClick(start.java:277) at android.view.View.performLongClick(View.java:4247) at android.view.View$CheckForLongPress.run(View.java:17341) at android.os.Handler.handleCallback(Handler.java:725) at android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:5227) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562) at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>But, if i start the same Activity with the same Intent from a simple Button defined in the Layout, the Activity Starts fine without any Errors... weird, isn't it?</p> <p>So, does anyone have an Idea how I can solve this problem?</p> <p>Here are some extractions from my code:</p> <p><strong>The Creation of the Elements with the OnLongClickListener:</strong></p> <pre><code>ScrollView parent = (ScrollView) maininflater.inflate(R.layout.start_ziplist_fragment_superwrapper, null, false); inf = maininflater; LinearLayout ll = (LinearLayout) maininflater.inflate(R.layout.start_ziplist_fragment_wrapper, parent, false); for (Integer i = 0; i &lt; count; i++) { ArrayList&lt;String&gt; data = new DB(cont).getAllZips().get(i); View custom = maininflater.inflate(R.layout.start_ziplist_fragment_inner, ll, false); TextView tv = (TextView) custom.findViewById(R.id.ziplist_name); TextView tv2 = (TextView) custom.findViewById(R.id.ziplist_text); tv.setText(data.get(2)); tv2.setText(data.get(1)); Integer id = Integer.valueOf(data.get(0)); custom.setId(id); custom.setOnLongClickListener(new View.OnLongClickListener() { @Override public boolean onLongClick(View view) { Integer id = view.getId(); startzipinfo(id); return true; } }); ll.addView(custom); } parent.addView(ll); </code></pre> <p><strong>The void which starts the Activity:</strong></p> <pre><code>public void startzipinfo(Integer id){ Intent in = new Intent(getApplicationContext(), zipinfo.class); startActivity(in); } </code></pre> <p>I'm looking forward to your Answers,</p> <p>Felix</p> <p><strong>EDIT: This is the Activity which is about to be started:</strong></p> <pre><code>package at.fekle.zipmanager; import android.app.Activity; import android.os.Bundle; /** * Created by felix on 27.06.13. */ public class zipinfo extends Activity { public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.zipinfo); } } </code></pre>
 

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