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POjava.lang.NullPointerException in textview inside asyncTask
 

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  1. POjava.lang.NullPointerException in textview inside asyncTask
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    <p>If i use the following code, i will have no error, but there will be a freeze time.</p> <blockquote> <p>`@Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build(); StrictMode.setThreadPolicy(policy); setContentView(R.layout.profilepic);</p> </blockquote> <pre><code> initialize(); Bundle bundle = getIntent().getExtras(); email = bundle.getString("Email"); ArrayList&lt;NameValuePair&gt; postParameters; String response = null; postParameters = new ArrayList&lt;NameValuePair&gt;(); postParameters.add(new BasicNameValuePair("emaillog", email)); try { response = CustomHttpClient.executeHttpPost("http://whatstherex.info/checkU.php", postParameters); res = response.toString(); res = res.replaceAll("null", ""); username = res.toString(); tvProfilePic.setText("Hi " + username + ", you are encourage to add a profile picture."); }catch(Exception e){ res = e.toString(); tvProfilePic.setText(res); } }` </code></pre> <p>But if i use this code with asynctask and progressDialog like this:</p> <blockquote> <p>`@Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build(); StrictMode.setThreadPolicy(policy); setContentView(R.layout.profilepic);</p> </blockquote> <pre><code> initialize(); getUsername(); } </code></pre> <p>private AsyncTask task;</p> <pre><code>public void getUsername(){ Bundle bundle = getIntent().getExtras(); email = bundle.getString("Email"); task = new AsyncTask&lt;String, Void, String&gt;() { ProgressDialog dialog; ArrayList&lt;NameValuePair&gt; postParameters; String response = null; @Override protected void onPreExecute() { // ArrayList&lt;NameValuePair&gt; postParameters = new ArrayList&lt;NameValuePair&gt;(); postParameters.add(new BasicNameValuePair("emaillog", email)); dialog = new ProgressDialog(Profilepic.this, ProgressDialog.STYLE_SPINNER); dialog.setMessage("Loading Data..."); dialog.show(); } @Override protected String doInBackground(String... params) { // try { response = CustomHttpClient.executeHttpPost("http://whatstherex.info/checkU.php", postParameters); res = response.toString(); res = res.replaceAll("null", ""); username = res.toString(); return username; }catch(Exception e){ res = e.toString(); return res; } } @Override protected void onPostExecute(String result) { if(result.length()&lt; 25){ username = result; tvProfilePic.setText("Hi " + result + ", you are encourage to add a profile picture."); dialog.dismiss(); }else{ tvProfilePic.setText(result); dialog.dismiss(); } } }; task.execute(); }` </code></pre> <p>i'll then get java.lang.NullPointerException in the textview.</p> <p>Whats the problem can anyone guide me? thank you</p>
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    1. PTQuestion
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    1. USSam
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    1. COI don't see anything about a textview, show the code and logcat.
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      1. POjava.lang.NullPointerException in textview inside asyncTask
      1. USGraknol
 

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