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POjava.lang.NullPointerException on onClickListener
 

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  1. POjava.lang.NullPointerException on onClickListener
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    <p>Can you see if there is anything wrong with my code? I tried to create dialog box when the button is pressed. I don't see something wrong here, But the logcat shows java.lang.NullPointerException in this line "agree.setOnClickListener(new OnClickListener() {"</p> <pre><code> package com.sociyo; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.pm.ActivityInfo; import android.os.Bundle; import android.support.v4.view.ViewPager; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.view.Window; import android.widget.Button; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); //Lock Orientation requestWindowFeature(Window.FEATURE_NO_TITLE); //Hide Action menu super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //Load main activity //viewPager default page ViewPagerAdapter adapter = new ViewPagerAdapter(); ViewPager myPager = (ViewPager) findViewById(R.id.pager); myPager.setAdapter(adapter); myPager.setCurrentItem(0); //textView clickable Button agree = (Button)findViewById(R.id.btnTerms); agree.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub AlertDialog.Builder tpDialog = new AlertDialog.Builder(null); tpDialog.setTitle("Terms and Policy"); tpDialog.setMessage(R.string.action_settings) .setCancelable(false) .setPositiveButton("OK", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub MainActivity.this.finish(); } }); } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } } </code></pre> <p>And this is the complete log cat :</p> <pre><code> E/AndroidRuntime(13076): FATAL EXCEPTION: main E/AndroidRuntime(13076): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.sociyo/com.sociyo.MainActivity}: java.lang.NullPointerException E/AndroidRuntime(13076): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2070) E/AndroidRuntime(13076): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2095) E/AndroidRuntime(13076): at android.app.ActivityThread.access$600(ActivityThread.java:137) E/AndroidRuntime(13076): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1206) E/AndroidRuntime(13076): at android.os.Handler.dispatchMessage(Handler.java:99) E/AndroidRuntime(13076): at android.os.Looper.loop(Looper.java:213) E/AndroidRuntime(13076): at android.app.ActivityThread.main(ActivityThread.java:4793) E/AndroidRuntime(13076): at java.lang.reflect.Method.invokeNative(Native Method) E/AndroidRuntime(13076): at java.lang.reflect.Method.invoke(Method.java:511) E/AndroidRuntime(13076): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789) E/AndroidRuntime(13076): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556) E/AndroidRuntime(13076): at dalvik.system.NativeStart.main(Native Method) **E/AndroidRuntime(13076): Caused by: java.lang.NullPointerException** E/AndroidRuntime(13076): at com.sociyo.MainActivity.onCreate(MainActivity.java:34) E/AndroidRuntime(13076): at android.app.Activity.performCreate(Activity.java:5008) E/AndroidRuntime(13076): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079) E/AndroidRuntime(13076): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2034) E/AndroidRuntime(13076): ... 11 more My activity_main.xml &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:background="@drawable/background" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity" &gt; &lt;android.support.v4.view.ViewPager android:id="@+id/pager" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_alignParentRight="true" android:layout_alignParentTop="true" &gt; &lt;/android.support.v4.view.ViewPager&gt; &lt;/RelativeLayout&gt; </code></pre> <p>And my activity_register.xml</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:background="@android:color/transparent" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:orientation="vertical" &gt; &lt;TextView android:id="@+id/tvRegisterTitle" style="@style/title" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:text="@string/register_text" android:textAppearance="?android:attr/textAppearanceLarge" /&gt; &lt;EditText android:id="@+id/etNameReg" style="@style/textfield" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/spMlmList" android:layout_centerHorizontal="true" android:layout_marginTop="15dp" android:ems="10" android:hint="@string/name_hint" android:inputType="textPersonName" &gt; &lt;requestFocus /&gt; &lt;/EditText&gt; &lt;EditText android:id="@+id/etEmailReg" style="@style/textfield" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/etNameReg" android:layout_centerHorizontal="true" android:layout_marginTop="15dp" android:ems="10" android:hint="@string/email_hint" android:inputType="textEmailAddress" /&gt; &lt;EditText android:id="@+id/etPasswordReg" style="@style/textfield" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@+id/etEmailReg" android:layout_below="@+id/etEmailReg" android:layout_centerVertical="true" android:layout_marginTop="15dp" android:ems="10" android:hint="@string/password_hint" android:inputType="textPassword" /&gt; &lt;Spinner android:id="@+id/spMlmList" style="@style/textfield" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@+id/tvRegisterTitle" android:layout_below="@+id/tvRegisterTitle" android:layout_marginTop="15dp" android:entries="@array/mlm_list" /&gt; &lt;Button android:id="@+id/btnRegister" style="@style/buttonBlue" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@+id/etPasswordReg" android:layout_below="@+id/chkAgree" android:layout_marginTop="15dp" android:text="@string/register_text" /&gt; &lt;CheckBox android:id="@+id/chkAgree" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/etPasswordReg" android:text="@string/agree_text" android:layout_marginTop="15dp" style="@style/checkbox"/&gt; &lt;Button android:id="@+id/btnTerms" android:background="@android:color/transparent" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignBaseline="@+id/chkAgree" android:layout_alignBottom="@+id/chkAgree" android:layout_toRightOf="@+id/tvRegisterTitle" android:layout_marginLeft="10dp" android:text="@string/terms_policy" style="@style/smallLink"/&gt; &lt;/RelativeLayout&gt; </code></pre>
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    1. USGianmarco
    1. USYansen Tan
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    1. COplease show your xml code.
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      1. USshivang Trivedi
    2. COwhat code is in your line number 34..?
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      1. USMaulik Sheth
    3. COHi, it's "agree.setOnClickListener(new OnClickListener()" { on line 34
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      1. USYansen Tan
 

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