안드로이드 menu 예제 소스 ( options menu, context menu )

context menu

public class MenuTest_ContextActivity extends Activity {
 
 EditText et;
 Button btn;
 
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        et = (EditText)findViewById(R.id.editText1);
        btn = (Button)findViewById(R.id.button1);
        
        btn.setOnClickListener(new View.OnClickListener() {
   
   public void onClick(View v) {
    Toast.makeText(getApplicationContext(), "button", Toast.LENGTH_SHORT).show();
   }
  });
        
        
        //위젯등록
        registerForContextMenu(btn);
        
    }//end onCreate

 @Override
 public boolean onContextItemSelected(MenuItem item) {

//  Toast.makeText(getApplicationContext(), item.getTitle(), Toast.LENGTH_SHORT).show();
  String str ="";
  
  switch( item.getItemId() ) {
  
  case 0: str = "AAA"; break;
  case 1: str = "BBB"; break;
  case 2: str = "CCC"; break;
  case 3: str = "DDD"; break;
  case 4: str = "EEE"; break;
   
  }//end switch
  Toast.makeText(getApplicationContext(), str, Toast.LENGTH_SHORT).show();
  return super.onContextItemSelected(item);
 }

 @Override
 public void onCreateContextMenu(ContextMenu menu, View v,
   ContextMenuInfo menuInfo) {
  
  //add( 그룹아이디, 아이템 아이디, 순서, 문자열 )
  menu.add(1,0,0,"A");
  menu.add(1,1,0,"B");
  menu.add(1,2,0,"C");
  menu.add(2,3,0,"D");
  menu.add(2,4,0,"E");
  
  super.onCreateContextMenu(menu, v, menuInfo);
 }
}

options menu

public class MenuTestActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }//end onCreate

    // 맨 처음 실행시에만 한번 실행
    public boolean onCreateOptionsMenu(Menu menu) {
		// 아이템 지정
		MenuInflater inf = getMenuInflater();
		inf.inflate(R.menu.mymenu, menu);	
		Log.i("xxx", "onCreateOptionsMenu");
		return super.onCreateOptionsMenu(menu);
	}//end onCreateOptionsMenu

    
    //로그인 메서드
    boolean loginFlag=false;
    public void login() {
    	loginFlag=true;
    }
    public void logout() {
    	loginFlag=false;
    }
    
    
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {

		Toast.makeText(getApplicationContext(), item.getTitle(), Toast.LENGTH_SHORT).show();
		switch(item.getItemId()) {
		case R.id.item01:
			
			break;
		case R.id.item06:
			if(loginFlag==false) {
				login();
			}else {
				logout();
			}
			
			break;
		}//end switch
		return super.onOptionsItemSelected(item);
	}//end onOptionsItemSelected

	//메뉴 버튼 누를때마다 매번 실행
	public boolean onPrepareOptionsMenu(Menu menu) {
		Log.i("xxx", "onPrepareOptionsMenu");
		
		if(loginFlag==true) {
			menu.getItem(5).setTitle("로그아웃");
		} else {
			menu.getItem(5).setTitle("로그인");
		}
		
		return super.onPrepareOptionsMenu(menu);
	}
}