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POjava.lang.NullPointerException in Filtering a ListView
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  1. POjava.lang.NullPointerException in Filtering a ListView
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    copied!<p>I'm trying to do a search bar that filter a listview But I'm facing this error in this line <code>filteredProjects.add(container.getProjects().get(i));</code> and I can't figure out why? Any idea what the problem might be? Thank you for helping I would apreciate it. </p> <pre><code> Gson gson = new GsonBuilder().setDateFormat( "yyyy-MM-dd'T'HH:mm:ssZ").create(); final ProjectContainer container = gson.fromJson(resultat, ProjectContainer.class); final ListView lv = (ListView) findViewById(R.id.list); /** * Updating parsed JSON data into ListView * */ adaptateur = new ProjectAdapter(ProjectActivity.this, R.layout.ligne_project, container); lv.setAdapter(adaptateur); // setListAdapter(adaptateur); // Search EditText EditText inputSearch; inputSearch = (EditText) findViewById(R.id.inputSearch); /** * Enabling Search Filter * */ inputSearch.addTextChangedListener(new TextWatcher() { @SuppressWarnings("null") @Override public void onTextChanged(CharSequence s, int arg1, int arg2, int arg3) { ProjectContainer filteredProjects = null; if (!s.toString().equals("")) { for (int i = 0; i &lt; container.getProjects().size(); i++) { if (container.getProjects().get(i) .getAbbreviation().toString().contains(s)) { filteredProjects.setProjects(null); filteredProjects.add(container.getProjects() .get(i)); } } adaptateur = new ProjectAdapter(ProjectActivity.this, R.layout.ligne_project, filteredProjects); lv.setAdapter(adaptateur); } else { adaptateur = new ProjectAdapter(ProjectActivity.this, R.layout.ligne_project, container); lv.setAdapter(adaptateur); } } @Override public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) { // TODO Auto-generated method stub } @Override public void afterTextChanged(Editable arg0) { // TODO Auto-generated method stub } }); </code></pre> <p>And this is my ProjectContainer.class :</p> <pre><code>import java.util.List; import com.google.gson.annotations.SerializedName; public class ProjectContainer { @SerializedName("project") List&lt;Project&gt; projects; public List&lt;Project&gt; getProjects() { return projects; } public void setProjects(List&lt;Project&gt; projects) { this.projects = projects; } public void add(Project project) { projects.add(project); } } </code></pre>
 

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