[안드로이드 자바] 메뉴를 이용한 이미지 변경, 이미지 회전(Menu, setRotation)

 

 

디자인

 

프로젝트 설명

메뉴를 통해 이미지를 선택할 수 있다

EditText에 입력한 값만큼 이미지가 회전한다

※ drawable 폴더에 jeju1, jeju2, jeju3 이미지가 존재함

 

xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="20dp"
        android:text="각도 입력">
    </TextView>

    <EditText
        android:id="@+id/EditText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="20dp">
    </EditText>
    </LinearLayout>

    <ImageView
        android:id="@+id/ImgView"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </ImageView>

</RelativeLayout>

 

menu.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

    <item
        android:id="@+id/ItemRotate"
        android:title="그림 회전"></item>
    <group
        android:checkableBehavior="single">
        <item
            android:id="@+id/Item1"
            android:title="한라산"
            android:checked="true">
        </item>
        <item
            android:id="@+id/Item2"
            android:title="추자도">
        </item>
        <item
            android:id="@+id/Item3"
            android:title="밤섬">
        </item>
    </group>
</menu>

 

 

 

 

 

 

 

menu 만드는법

 

res 폴더 우클릭 > New > Android Resource File

 

File name: 임의지정

Resource type: Menu 선택

생성(OK)

 

 

MainActivity.java

package com.sample.menuimage;

import android.graphics.Color;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

    ImageView imageView;
    EditText editText;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setTitle("제주도 풍경");

        imageView = (ImageView) findViewById(R.id.ImgView);
        editText = (EditText) findViewById(R.id.EditText);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.menu1,menu);
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.ItemRotate:
                imageView.setRotation(Float.parseFloat(editText.getText().toString()));
                return true;
            case R.id.Item1:
                item.setChecked(true);
                imageView.setImageResource(R.drawable.jeju1);
                return true;
            case R.id.Item2:
                item.setChecked(true);
                imageView.setImageResource(R.drawable.jeju2);
                return true;
            case R.id.Item3:
                item.setChecked(true);
                imageView.setImageResource(R.drawable.jeju3);
                return true;

        }
        return false;
    }
}