sesy sesy - 1 year ago 189
Android Question

Cannot resolve method 'add(int,


import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class MainActivity extends FragmentActivity {

public void onCreate(Bundle savedInstanceState) {
getSupportFragmentManager().beginTransaction().add(, new PlaceholderFragment()).commit();

public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(, menu);
return true;

public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();

//noinspection SimplifiableIfStatement
if (id == {
return true;

return super.onOptionsItemSelected(item);

public static class PlaceholderFragment extends Fragment {

private ArrayAdapter<String> mForecastAdapter;

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

View rootView = inflater.inflate(R.layout.fragment_main, container, false);
String[] forecastArray = {"Today-Sunny-88/63", "Tommorrow-windy-88/94", "wed-aloo-alooo"};
List<String> weekForecast = new ArrayList<String>(Arrays.asList(forecastArray));
mForecastAdapter = new ArrayAdapter<String>(getActivity(), R.layout.fragment_main,, weekForecast);
ListView listView = (ListView) rootView.findViewById(;
return rootView;


Messages Gradle Build
Error:(27, 59) error: no suitable method found for add(int,PlaceholderFragment)
method FragmentTransaction.add(Fragment,String) is not applicable
(argument mismatch; int cannot be converted to Fragment)
method FragmentTransaction.add(int,Fragment) is not applicable
(argument mismatch; PlaceholderFragment cannot be converted to Fragment)
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output
Error:Execution failed for task ':app:compileDebugJava'.
Compilation failed; see the compiler error output for details.

Answer Source

You are using FragmentActivity and getSupportFragmentManager(). Therefore, PlaceholderFragment needs to inherit from, not

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