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POFatal exception main : unable to start the activity component
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  1. POFatal exception main : unable to start the activity component
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    copied!<p>I am parsing the data and displaying it on the textview. Though i have initialized all the variables and necessary permissions to be made in manifest file. Still iam getting the fatal error. Please have a look at code. Thanks in advance.</p> <p>The application is running successfully if i use android 2.1 i.ie API-7..but if i replace it with android 4.0.3 i.e API-15..it throws the same reeor..as i mentioned in logcat file</p> <p>Main Activity</p> <pre><code>public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); View layout = findViewById(R.id.layout); TextView id[]; TextView Name[]; TextView Email[]; TextView Address[]; try{ SAXParserFactory saxPF= SAXParserFactory.newInstance(); SAXParser saxP = saxPF.newSAXParser(); XMLReader xmlR = saxP.getXMLReader(); URL url = new URL("http://xyz"); XMLHandler myXMLHandler = new XMLHandler(); xmlR.setContentHandler(myXMLHandler); xmlR.parse(new InputSource(url.openStream())); }catch(Exception e){ e.printStackTrace(); } data= XMLHandler.data; id = new TextView[data.getId().size()]; Name = new TextView[data.getName().size()]; Email = new TextView[data.getEmail().size()]; for(int i=0 ; i &lt;data.getName().size(); i++) { id[i] = new TextView (this); id[i].setText("Id : " + data.getId().get(i)); Name[i] = new TextView(this); Name[i].setText("Name : " + data.getName().get(i)); Email[i] = new TextView(this); Email[i].setText("Email : " + data.getEmail().get(i)); ((ViewGroup)layout).addView(id[i]); ((ViewGroup)layout).addView(Name[i]); ((ViewGroup)layout).addView(Email[i]); } </code></pre> <p>XMLGettersSetters Class</p> <pre><code>public class XMLGettersSetters { private ArrayList&lt;String&gt; id = new ArrayList&lt;String&gt;(); private ArrayList&lt;String&gt; Name = new ArrayList&lt;String&gt;(); private ArrayList&lt;String&gt; Email = new ArrayList&lt;String&gt;(); public ArrayList&lt;String&gt; getId(){ return id; } public void setId(String id){ this.id.add(id); } public ArrayList&lt;String&gt; getName(){ return Name; } public void setName(String name) { this.Name.add(name); } public ArrayList&lt;String&gt; getEmail(){ return Email; } public void setEmail(String email){ this.Email.add(email); } } </code></pre> <p>XMLHandler class</p> <pre><code>public class XMLHandler extends DefaultHandler { String elementValue= null; Boolean elementOn = false; public static XMLGettersSetters data = null; public static XMLGettersSetters getXMLData(){ return data; } public static void setXMLData(XMLGettersSetters data) { XMLHandler.data=data; } public void startElement(String uri,String localName,String qName,Attributes attributes) throws SAXException{ elementOn=true; if(localName.equals("ExaReceipts")){ data = new XMLGettersSetters(); }else if(localName.equals("Organisation")){ } } public void endElement(String uri,String localName,String qName)throws SAXException { elementOn = false; if(localName.equalsIgnoreCase("id")) data.setId(elementValue); else if(localName.equalsIgnoreCase("Name")) data.setName(elementValue); else if(localName.equalsIgnoreCase("Email")) data.setEmail(elementValue); } public void characters (char[] ch , int start , int length)throws SAXException { if(elementOn){ elementValue= new String(ch,start,length); elementOn=false; } } } </code></pre> <p>AndroidManifest.xml</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.spinnertest1" android:versionCode="1" android:versionName="1.0" &gt; &lt;uses-sdk android:minSdkVersion="15" /&gt; &lt;uses-permission android:name="android.permission.INTERNET" /&gt;" &lt;application android:icon="@drawable/ic_launcher" android:label="@string/app_name" &gt; &lt;activity android:name=".SpinnerTest1Activity" android:label="@string/app_name" &gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.MAIN" /&gt; &lt;category android:name="android.intent.category.LAUNCHER" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;/application&gt; &lt;/manifest&gt; </code></pre> <p>logcat</p> <pre><code>06-26 17:41:38.482: W/dalvikvm(2129): threadid=1: thread exiting with uncaught exception (group=0x409c01f8) 06-26 17:41:38.492: E/AndroidRuntime(2129): FATAL EXCEPTION: main 06-26 17:41:38.492: E/AndroidRuntime(2129): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.spinnertest1/com.spinnertest1.SpinnerTest1Activity}: java.lang.NullPointerException 06-26 17:41:38.492: E/AndroidRuntime(2129): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956) 06-26 17:41:38.492: E/AndroidRuntime(2129): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 06-26 17:41:38.492: E/AndroidRuntime(2129): at android.app.ActivityThread.access$600(ActivityThread.java:123) 06-26 17:41:38.492: E/AndroidRuntime(2129): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147) 06-26 17:41:38.492: E/AndroidRuntime(2129): at android.os.Handler.dispatchMessage(Handler.java:99) 06-26 17:41:38.492: E/AndroidRuntime(2129): at android.os.Looper.loop(Looper.java:137) 06-26 17:41:38.492: E/AndroidRuntime(2129): at android.app.ActivityThread.main(ActivityThread.java:4424) 06-26 17:41:38.492: E/AndroidRuntime(2129): at java.lang.reflect.Method.invokeNative(Native Method) 06-26 17:41:38.492: E/AndroidRuntime(2129): at java.lang.reflect.Method.invoke(Method.java:511) 06-26 17:41:38.492: E/AndroidRuntime(2129): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 06-26 17:41:38.492: E/AndroidRuntime(2129): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 06-26 17:41:38.492: E/AndroidRuntime(2129): at dalvik.system.NativeStart.main(Native Method) 06-26 17:41:38.492: E/AndroidRuntime(2129): Caused by: java.lang.NullPointerException 06-26 17:41:38.492: E/AndroidRuntime(2129): at com.spinnertest1.SpinnerTest1Activity.onCreate(SpinnerTest1Activity.java:58) 06-26 17:41:38.492: E/AndroidRuntime(2129): at android.app.Activity.performCreate(Activity.java:4465) 06-26 17:41:38.492: E/AndroidRuntime(2129): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049) 06-26 17:41:38.492: E/AndroidRuntime(2129): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920) 06-26 17:41:38.492: E/AndroidRuntime(2129): ... 11 more </code></pre>
 

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