메뉴실습 - OprionsMenuExam_inst[실습]

 

 package com.kgmyh.four.optionsmenu.text;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.MenuItem;
import android.support.v4.app.NavUtils;

public class IntroActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_intro);
    }

}

 

package com.kgmyh.four.optionsmenu.text;

import android.app.Activity;
import android.content.Intent;
import android.content.res.ColorStateList;
import android.graphics.Color;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {
 private TextView tv;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tv = (TextView)findViewById(R.id.tv);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

    //버튼이 눌리면 메뉴의 옵션을 미리 바꿔줌
 @Override
 public boolean onPrepareOptionsMenu(Menu menu) {
  ColorStateList  color = tv.getTextColors();
  int txtColor = color.getDefaultColor();//현재 글자색을 int로 리턴받음
  
  //빨강파알에 대한 메뉴 Item을 받아옴
  MenuItem blueMI = menu.findItem(R.id.color_blue);
  MenuItem redMI = menu.findItem(R.id.color_red);
  
  //빨강이나 파랑을 선택했을 때 선택된 체크박스에 체크가 남아있게함
  if(txtColor==Color.RED){
   redMI.setChecked(true);//red선택
   blueMI.setChecked(false);//blue해제
  }else if(txtColor==Color.BLUE){
   redMI.setChecked(false);//red해제
   blueMI.setChecked(true);//blue선택
  }

  return true;
 }

 @Override
 public boolean onOptionsItemSelected(MenuItem item) {
  int id = item.getItemId();
  String txt = (String)item.getTitle();
  Toast.makeText(this, "메뉴 : "+txt+"가 선택됨", Toast.LENGTH_SHORT).show();
  if(id==R.id.color_blue){
   tv.setTextColor(Color.BLUE);
  }else if(id==R.id.color_red){
   tv.setTextColor(Color.RED);
  }else if(id==R.id.menu_intro){
   //IntroActivity를 실행
   //Intent객체 생성 -> System에 무엇을 실행할지에 대한 정보를 알려주기 위한 객체
   Intent intent = new Intent(this, IntroActivity.class);//component와 class객체
   //System에 요청 - startActivity(intent)
   startActivity(intent);
  }
  return true;
 }
   

   
}

 

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <TextView
        android:textSize="25dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:padding="@dimen/padding_medium"
        android:text="@string/intro"
        tools:context=".IntroActivity" />

</RelativeLayout>

 

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <TextView
        android:id="@+id/tv"
        android:textSize="20dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:padding="@dimen/padding_medium"
        android:text="@string/hello_world"
        tools:context=".MainActivity" />

</RelativeLayout>

 

<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@+id/menu_setting"
        android:title="설정"
        android:orderInCategory="100"
        />
    <item android:id="@+id/menu_refresh"
        android:title="새로고침"
        android:orderInCategory="200"
        />

    <!-- sub menu -->
    <item android:id="@+id/menu_file"
          android:title="File"
          android:orderInCategory="300">
        <!-- "file" submenu -->
        <menu>
            <item android:id="@+id/create_new"
                  android:title="새파일" />
            <item android:id="@+id/open"
                  android:title="열기" />
            <item android:id="@+id/save"
                 android:title="저장"/>
        </menu>
    </item>
    <!-- 선택 메뉴 -->
    <item android:id="@+id/choiceColor"
          android:title="색선택"
          android:orderInCategory="400">
  <menu>
   <item android:id="@+id/color_blue"  
          android:checkable="true"
          android:title="파랑"/>
   <item android:id="@+id/color_red"  
          android:checkable="true"
          android:title="빨강"/>   
  </menu>
    </item>
    <item android:id="@+id/choiceColor2"
          android:title="색선택2"
          android:orderInCategory="500">
  <menu>
      <group android:checkableBehavior="single">
    <item android:id="@+id/color_blue2"  
           android:title="파랑"/>
    <item android:id="@+id/color_red2"  
           android:title="빨강"/>
   </group>   
  </menu>
    </item>
    <item android:id="@+id/menu_intro"
        android:title="소개"
        android:orderInCategory="600"/>
</menu>

 

<resources>

    <string name="app_name">OptionsMenuExam</string>
    <string name="hello_world">Hello world!</string>
    <string name="menu_settings">Settings</string>
    <string name="title_activity_main">OptionsMenu테스트</string>
    <string name="title_activity_intro">App Introduction</string>
 <string name="intro">Options 메뉴 테스트 app\n버젼 : 1.0</string>
</resources>