Android TextView and null pointer exception

Question

In my activity I do

TextView bTitle = (TextView)findViewById(R.id.TextView);

bTitle.setText(Html.fromHtml(title));

where title is a string

but i get a null pointer exception at second line ie. bTitle.setText(Html.fromHtml(title));

can anyone help???

Activity

public class NewsDetails extends ListActivity{

public static final String LOG_TAG = "Infra";

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.listplaceholder);
    super.onStart();
    Intent myIntent = getIntent(); 
    String id = myIntent.getStringExtra("content_id");
    String title = myIntent.getStringExtra("title");
    //Spanned newTitle = Html.fromHtml(title);
    //tv.setText(Html.fromHtml(title));
    TextView bTitle = (TextView)findViewById(R.id.TextView);
    Log.d(LOG_TAG, "What is the value: " + bTitle);
    bTitle.setText(Html.fromHtml(title));

    ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>();


    String xml = XMLfunctions.getBodyXML(id);
    String result = xml.replaceAll("<p>", "<p><div align=\"justify\">");
    String nXml = result.replaceAll("</p>", "</div></p>");
    TextView body = (TextView)findViewById(R.id.TextView1);
    body.setText(Html.fromHtml(nXml));


    //Spanned body = Html.fromHtml(nXml);
    /*HashMap<String, String> map = new HashMap<String, String>();  
    map.put("title", tv.toString());
    map.put("news", tv1.toString());
    mylist.add(map);*/

    /*ListAdapter adapter = new SimpleAdapter(this, mylist , R.layout.list_item, new String[] { "title", "news" }, new int[] { R.id.item_title, R.id.item_subtitle });

    setListAdapter(adapter);

    final ListView lv = getListView();
    lv.setTextFilterEnabled(true);*/
}

Layout - listplaceholder.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">    

    <ListView
    android:id="@id/android:list"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:drawSelectorOnTop="false" />

    <TextView
        android:id="@id/android:empty"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="No data"
        android:focusable="false"
        android:clickable="true"/>

</LinearLayout>

text_view.xml

<LinearLayout android:id="@+id/LinearLayout01"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"
    xmlns:android="http://schemas.android.com/apk/res/android">

    <TextView 
        android:id="@+id/TextView"
        android:layout_height="wrap_content"
        android:layout_width="fill_parent"
        android:textSize="16px"
        android:textStyle="bold">
    </TextView>
    <TextView 
        android:id="@+id/TextView1"
        android:layout_height="wrap_content"
        android:layout_width="fill_parent"
        android:textSize="16px"
        android:textStyle="bold">
    </TextView>

</LinearLayout>

Any luck so far? Please communicate your concerns, if any, so we could help more. Thank you. — rekaszeru
– rekaszeru, Commented May 6, 2011 at 3:02
@rekaszeru: Sorry for the delay in reply, thank you all for your help. I replaced textview with webview and now my application is running fine. — ReNa
– ReNa, Commented May 6, 2011 at 3:48

rds · Accepted Answer · 2014-10-27 15:26:12Z

2

You should load the correct xml for your layout

setContentView(R.layout.text_view)

TextView bTitle = (TextView)findViewById(R.id.TextView);

bTitle.setText(Html.fromHtml(title));

edited Oct 27, 2014 at 15:26

rds

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answered May 2, 2011 at 11:16

limitfan

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Comments

Niranj Patel · Accepted Answer · 2011-05-02 11:23:23Z

1

i found two issue in your code

1)first thing is your TextView is not in listplaceholder.xml .. so you it will be null pointer...

2)and you need add this code before setContentView();

 Intent myIntent = getIntent(); 
String id = myIntent.getStringExtra("content_id");
String title = myIntent.getStringExtra("title");

and let me know what u want in list and where you call setAdapter for list , where is your adapter...

answered May 2, 2011 at 11:23

Niranj Patel

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Comments

rekaszeru · Accepted Answer · 2011-05-02 11:25:33Z

1

Make sure, that you actually have the

<TextView android:id="@+id/TextView [...]

view in your activity's layout xml.

Update
In your listplaceholder.xml there is no such TextView!
If you use the text_view.xml layout as your item renderer, then the code that tries to access the TextView should be placed inside your ListAdapter implementation's getView method!

edited May 2, 2011 at 11:25

answered May 2, 2011 at 11:09

rekaszeru

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2 Comments

ReNa Over a year ago

i'll share my code can you have a look i'm not able to come out with a solution

ReNa Over a year ago

i have posted a new question at [stackoverflow.com/questions/6196256/…. will be very greatful if you can help. Thanks

karni · Accepted Answer · 2011-05-02 11:13:27Z

0

1) Make sure R is imported from your project (and not from android.R namespace) in your import(s) section on the top

2) After the

TextView bTitle = (TextView)findViewById(R.id.TextView);

perform a log:

Log.d("debug", "bTitle: " + (bTitle != null));

and check out from terminal (if you're using Linux, if Windows, just run the logcat)

adb logcat | grep bTitle

This should tell you if you properly got the TextView from your layout (if it is present in the layout, like @rekaszeru mentioned).

3) Make sure the title variable is not null as well

answered May 2, 2011 at 11:13

karni

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Comments

ReNa · Accepted Answer · 2011-05-06 03:50:42Z

0

Thank you all for your help. I have replaced textview with webview as i needed a lot of html formatting in my application and now my text appears in proper format and also my appliction is running fine.

Thanks

answered May 6, 2011 at 3:50

ReNa

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1 Comment

rekaszeru Over a year ago

Its great that you managed it to work, but this isn't answer to your question. You had a NPE caused by trying to access a view which wasn't present in the layout you referenced.

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