I'm following a tutorial about creating Android apps and Eclipse is generated a lot of codes I don't need for now. For example, It's extending the MainActivity class from ActionBarActivity where I merely expects an Activity derived class.
Here's the code:
package com.example.helloworld;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
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.os.Build;
import android.util.Log;
public class MainActivity extends ActionBarActivity {
String tag = "HelloWorld";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.d(tag, "onCreate() triggered!");
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
}
@Override
public void onStart(){
super.onCreate(null);
Log.d(tag, "onStart()");
}
@Override
public void onResume(){
super.onResume();
Log.d(tag, "onResume()");
}
@Override
public void onPause(){
super.onPause();
Log.d(tag, "Paused!");
}
@Override
public void onStop(){
super.onStop();
Log.d(tag, "onStop()");
}
@Override
public void onDestroy(){
super.onDestroy();
Log.d(tag, "onDestroy()");
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
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();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
return rootView;
}
}
}