ContextMenu

* 콘텍스트메뉴 기본 사용

012

1. ActivityMain 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/baseLayout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:gravity="center_horizontal"
    android:orientation="vertical" >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="배경색 변경" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="버튼 변경" />

</LinearLayout>

2.MainActivity.java

public class MainActivity extends AppCompatActivity  {

    LinearLayout baseLayout;
    Button button1, button2;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setTitle("배경색 바꾸기(컨텍스트 메뉴)");

        baseLayout = (LinearLayout) findViewById(R.id.baseLayout);
        button1 = (Button) findViewById(R.id.button1);
        registerForContextMenu(button1);

        button2 = (Button) findViewById(R.id.button2);
        registerForContextMenu(button2);
    }

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v,
                                    ContextMenu.ContextMenuInfo menuInfo) {

        super.onCreateContextMenu(menu, v, menuInfo);

        MenuInflater mInflater = getMenuInflater();
        if (v == button1) {
            menu.setHeaderTitle("배경색 변경");

            mInflater.inflate(R.menu.menu1, menu);
        }
        if (v == button2) {
            mInflater.inflate(R.menu.menu2, menu);
        }
    }

    @Override
    public boolean onContextItemSelected(MenuItem item) {

        switch (item.getItemId()) {
            case R.id.itemRed:
                baseLayout.setBackgroundColor(Color.RED);
                return true;
            case R.id.itemGreen:
                baseLayout.setBackgroundColor(Color.GREEN);
                return true;
            case R.id.itemBlue:
                baseLayout.setBackgroundColor(Color.BLUE);
                return true;
            case R.id.subRotate:
                button2.setRotation(45);
                return true;
            case R.id.subSize:
                button2.setScaleX(2);
                return true;
        }
        return false;
    }

}

3. menu1.xml

<menu xmlns:android="http://schemas.android.com/apk/res/android" >

    <item
        android:id="@+id/itemRed"
        android:title="배경색 (빨강)">
    </item>
    <item
        android:id="@+id/itemGreen"
        android:title="배경색(초록)">
    </item>
    <item
        android:id="@+id/itemBlue"
        android:title="배경색(파랑)">
    </item>

</menu>

4.menu2.xml

<menu xmlns:android="http://schemas.android.com/apk/res/android" >

    <item
        android:id="@+id/subRotate"
        android:title="버튼 45도 회전"/>
    <item
        android:id="@+id/subSize"
        android:title="버튼 2배 확대"/>

</menu>

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* Item에 라디오 버튼 적용

위 내용에 item xml 수정

<menu xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:android="http://schemas.android.com/apk/res/android" >
<group
    android:checkableBehavior="single">
    <item
        android:id="@+id/itemRed"
        android:title="배경색 (빨강)"></item>
    <item
        android:id="@+id/itemGreen"
        android:title="배경색(초록)">
    </item>
    <item
        android:id="@+id/itemBlue"
        android:title="배경색(파랑)">
    </item>
</group>
</menu>