How do I implement listview in appcompatactivity?
•
Android
public class MainActivity extends AppCompatActivity {
protected List<ParSEObject> mStatus;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
ParseUser currentUser = ParseUser.getCurrentUser();
if (currentUser != null){
//show user the homepage
ParseQuery<ParSEObject> query = new ParseQuery<ParSEObject>("Status");
query.findInBackground(new FindCallback<ParSEObject>() {
@Override
public void done(List<ParSEObject> status, ParseException e) {
if (e==null){
//success
mStatus = status;
StatusAdapter adapter = new StatusAdapter(getListView().getContext(), mStatus);
setlistadapter(adapter);
} else {
//ther was a problem.
}
}
});
} else {
//show login screen
Intent takeUserToLogin = new Intent(this, LoginActivity.class);
startActivity(takeUserToLogin);
}
}
In the above code, I encountered errors on getlistview () and setlistadapter
I have the following code in the statusadapter class:
public class StatusAdapter extends ArrayAdapter<ParSEObject> {
protected Context mContext;
protected List<ParSEObject> mStatus;
public StatusAdapter(Context context, List<ParSEObject> status){
super(context, R.layout.homepagecustomlayout, status);
mContext = context;
mStatus = status;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent){
ViewHolder holder;
if(convertView == null){
convertView = LayoutInflater.from(mContext).inflate(
R.layout.homepagecustomlayout,null);
holder = new ViewHolder();
holder.usernameHomepage = (TextView)convertView.findViewById(R.id.usernameHP);
holder.statusHomepage = (TextView)convertView.findViewById(R.id.statusHP);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
ParSEObject statusObject = mStatus.get(position);
//user
String username = statusObject.getString("user");
holder.usernameHomepage.setText(username);
//status
String status = statusObject.getString("newStatus");
holder.statusHomepage.setText(status);
return convertView;
}
public static class ViewHolder{
TextView usernameHomepage;
TextView statusHomepage;
}
}
I'm tracking this tutorial
resolvent:
Getlistview () and setlistadapter () are methods of listactivity / listfragment
However, it seems that you are extending appcompatactivity. Therefore, you can add listview to your activity_ main; Medium. Next:
ListView listview = findViewById(R.id.yourlistID);
Set the adapter in this way - listview. Setadapter();
I hope this can help!
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