조각을 사용할 때 코드를 넣을 위치는 어디입니까?

Question

저는 Android 개발을 처음 접했고 그 ActionBar와 KitKat과 함께 나온 "Fragments-Stuff"에 혼란 스럽습니다. 그냥 간단한 질문 : 내 MainActivity의 onCreate()에서 클릭 리스너를 구현하는 데 사용되었는데, 지금 마술을 어디에 두어야합니까?

package com.example.alertdialig; 

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; 

public class MainActivity extends ActionBarActivity { 

@Override 
protected void onCreate(Bundle savedInstanceState) { 

    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    if (savedInstanceState == null) { 
     getSupportFragmentManager().beginTransaction() 
       .add(R.id.container, new PlaceholderFragment()) 
       .commit(); 
    } 

} 

@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; 
    } 
} 

} 

Answer 1

당신은 당신의 조각에 onCreateView에 그것을 할. 그런데

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
    View rootView = inflater.inflate(R.layout.fragment_main, container, false); 
    Button aButton = rootView.findViewById(R.id.aButton); 
    aButton.setOnClickListener(new View.OnClickListener(){ 

     @Override 
     public void onClick(View v){ 
     } 
    }); 
    return rootView; 
} 

, 조각은 안드로이드 3.0에서 도입하지 킷캣 ;-)는

Answer 2

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
    View rootView = inflater.inflate(R.layout.fragment_main, container, false); 
    Button myButton = rootView.findViewById(R.id.myButtton); 
    myButton.setOnClickListener(new OnClickListener(){ 
    ... 
    }); 
    return rootView; 
}