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Editorial Team
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Asked: 2026-06-07T18:34:34+00:00

Here is my problem, I am trying to setText from a ListView. The problem

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Here is my problem, I am trying to setText from a ListView. The problem is, I will get an error because (according to my logs) the setContentView of my main activity does not match up with the TextView i want to setText from another .xml (contactList.xml)

Jobs Activity (Main)

 @Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.jobs);
    vib = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
    TextView assigned = (TextView) findViewById(R.id.assigned);



    new ParseJobs().execute();

ParseJobs() Method

    @Override
    protected void onPostExecute(Void result) {
        super.onPostExecute(result);



        if (ACKNOWLEDGED.contains("False")) {


            /** Updating parsed JSON data into ListView */
            ListAdapter adapter = new SimpleAdapter(Jobs.this, contactList, R.layout.list_item, new String[] { job, pays, ready_at }, new int[] { R.id.job1, R.id.pays1, R.id.ready_at1 });
            setListAdapter(adapter);        

            //TextView readyORdue = (TextView) findViewById(R.id.readyORdue);
            //readyORdue.setText("Ready At:");
        }

        if (ACKNOWLEDGED.contains("True")) {

            /** Updating parsed JSON data into ListView */
            ListAdapter adapter = new SimpleAdapter(Jobs.this, contactList, R.layout.list_item, new String[] { job, pays, due_by }, new int[] { R.id.job1, R.id.pays1, R.id.due_by1 });
            setListAdapter(adapter);    

            //TextView readyORdue = (TextView) findViewById(R.id.readyORdue);
            //readyORdue.setText("Due By:");
        }


        VerifyDriver.dismiss();

    }
}

Notice in my ParseJobs Method, I am trying to to update the TextView “readyORdue” but I will get an error because, that TextView belongs to SimpleAdapter contactList.xml

So my question is, how would i setText a textview from my contactList XML layout?

Heres My Logs:

 07-17 15:55:16.703: W/dalvikvm(4387): threadid=1: thread exiting with uncaught exception (group=0x40015578)
 07-17 15:55:16.703: E/AndroidRuntime(4387): FATAL EXCEPTION: main
 07-17 15:55:16.703: E/AndroidRuntime(4387): java.lang.NullPointerException
 07-17 15:55:16.703: E/AndroidRuntime(4387):    at com.jetdelivery.mobile.Jobs$ParseJobs.onPostExecute(Jobs.java:287)
 07-17 15:55:16.703: E/AndroidRuntime(4387):    at com.jetdelivery.mobile.Jobs$ParseJobs.onPostExecute(Jobs.java:1)
 07-17 15:55:16.703: E/AndroidRuntime(4387):    at android.os.AsyncTask.finish(AsyncTask.java:417)
 07-17 15:55:16.703: E/AndroidRuntime(4387):    at android.os.AsyncTask.access$300(AsyncTask.java:127)
 07-17 15:55:16.703: E/AndroidRuntime(4387):    at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:429)
 07-17 15:55:16.703: E/AndroidRuntime(4387):    at android.os.Handler.dispatchMessage(Handler.java:99)
 07-17 15:55:16.703: E/AndroidRuntime(4387):    at android.os.Looper.loop(Looper.java:130)
 07-17 15:55:16.703: E/AndroidRuntime(4387):    at android.app.ActivityThread.main(ActivityThread.java:3687)
 07-17 15:55:16.703: E/AndroidRuntime(4387):    at java.lang.reflect.Method.invokeNative(Native Method)
 07-17 15:55:16.703: E/AndroidRuntime(4387):    at java.lang.reflect.Method.invoke(Method.java:507)
07-17 15:55:16.703: E/AndroidRuntime(4387):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842)
07-17 15:55:16.703: E/AndroidRuntime(4387):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
07-17 15:55:16.703: E/AndroidRuntime(4387):     at dalvik.system.NativeStart.main(Native Method)

Line 287 is “readyORdue.setText(“Ready At:”);”

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1 Answer

  1. Editorial Team

    If you want to use another layout file “contactList.xml” as you described, first you need to inflate it. 

    LayoutInflater inflater = (LayoutInflater)context.getSystemService (Context.LAYOUT_INFLATER_SERVICE); 
View contactList= inflater.inflate(R.layout.contactList, false);

    Now 

    TextView readyORdue = (TextView)contactList.findViewById(R.id.readyORdue);

    will give you needed TextView, add this view to some container in your R.layout.jobs to make it visible.

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