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PONull Pointer Exception when finding button on dialog
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  1. PONull Pointer Exception when finding button on dialog
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    copied!<p>This is in my onCreate()</p> <pre><code>final Dialog dialog = new Dialog(this); dialog.setContentView(R.layout.go_pro); Button free = (Button) dialog.findViewById(R.id.still_free); free.setOnClickListener(new OnClickListener() { //EXCEPTION HERE! @Override public void onClick(View v) { dialog.cancel(); } }); </code></pre> <p>this is int the layout go_pro:</p> <pre><code> &lt;LinearLayout android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:layout_width="wrap_content"&gt; &lt;Button android:id="@+id/still_free" android:text="Keep the ads" android:layout_width="wrap_content" android:layout_height="wrap_content" &gt;&lt;/Button&gt; &lt;Button android:id="@+id/full_version" android:text="Go PRO" android:layout_width="wrap_content" android:layout_height="wrap_content"&gt;&lt;/Button&gt; &lt;/LinearLayout&gt; </code></pre> <p>LogCat:</p> <pre><code>07-09 16:23:40.102: ERROR/AndroidRuntime(11435): FATAL EXCEPTION: main 07-09 16:23:40.102: ERROR/AndroidRuntime(11435): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.convert/com.convert.MainWindowYuval}: java.lang.NullPointerException 07-09 16:23:40.102: ERROR/AndroidRuntime(11435): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663) 07-09 16:23:40.102: ERROR/AndroidRuntime(11435): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 07-09 16:23:40.102: ERROR/AndroidRuntime(11435): at android.app.ActivityThread.access$2300(ActivityThread.java:125) 07-09 16:23:40.102: ERROR/AndroidRuntime(11435): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 07-09 16:23:40.102: ERROR/AndroidRuntime(11435): at android.os.Handler.dispatchMessage(Handler.java:99) 07-09 16:23:40.102: ERROR/AndroidRuntime(11435): at android.os.Looper.loop(Looper.java:123) 07-09 16:23:40.102: ERROR/AndroidRuntime(11435): at android.app.ActivityThread.main(ActivityThread.java:4627) 07-09 16:23:40.102: ERROR/AndroidRuntime(11435): at java.lang.reflect.Method.invokeNative(Native Method) 07-09 16:23:40.102: ERROR/AndroidRuntime(11435): at java.lang.reflect.Method.invoke(Method.java:521) 07-09 16:23:40.102: ERROR/AndroidRuntime(11435): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858) 07-09 16:23:40.102: ERROR/AndroidRuntime(11435): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 07-09 16:23:40.102: ERROR/AndroidRuntime(11435): at dalvik.system.NativeStart.main(Native Method) 07-09 16:23:40.102: ERROR/AndroidRuntime(11435): Caused by: java.lang.NullPointerException **07-09 16:23:40.102: ERROR/AndroidRuntime(11435): at com.convert.MainWindowYuval.onCreate(MainWindowYuval.java:93)**MY CLASS!!@#!@#!@#!@#!@# 07-09 16:23:40.102: ERROR/AndroidRuntime(11435): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 07-09 16:23:40.102: ERROR/AndroidRuntime(11435): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) </code></pre> <p>EDIT: this is so wierd! i have two same buttons in my xml with different id and two buttons in the on create all the same but only one of them makes a null pointer exception</p> <pre><code> Button button1 = (Button) dialog.findViewById(R.id.full_version); button1.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(Intent.ACTION_VIEW); intent.setData(Uri.parse("market://details?id=com.paulmaidment.games.flagsoftheworld")); startActivity(intent); dialog.cancel();//TODO OPEN PAID APP HERE!!! } }); Button free = (Button)findViewById(R.id.stay_free); free.setOnClickListener(new OnClickListener() { //EXCEPTION ONLY HERE! @Override public void onClick(View v) { dialog.cancel(); } }); </code></pre>
 

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