버튼 (사진 회전)

# 실행 화면

# activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    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"
    android:orientation="vertical"
    android:gravity="center"
    tools:context=".MainActivity">

<Button
    android:id="@+id/button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:drawableLeft="@drawable/smile"
    android:drawableRight="@drawable/smile"
    android:text=" 회전하기 "
    tools:layout_editor_absoluteX="120dp"
    tools:layout_editor_absoluteY="219dp" />

<ImageView
    android:id="@+id/imageView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_margin="20dp"
    app:srcCompat="@drawable/dog" />

</LinearLayout>

# MainActivity.java

package kr.ac.skuniv.rotationtest;

import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;

public class MainActivity extends AppCompatActivity {
    Button button;
    ImageView imageView;
    int rot = 0;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setTitle("2018305065 전유정");

        button = (Button) findViewById(R.id.button);
        imageView = (ImageView) findViewById(R.id.imageView);

        button.setOnClickListener(new View.OnClickListener(){
            public void onClick(View v){
                rot += 10;
                imageView.setRotation(rot);
            }
        });
    }
}