Event Handling

05 Oct 2021 in Study on Android

Event Handling

문제

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"
    tools:context=".MainActivity">


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="3"
        android:gravity="center"
        android:orientation="vertical">

        <Button
            android:id="@+id/button2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="#AEACAC"
            app:backgroundTint="@null"
            android:textColor="@color/black"
            android:drawableLeft="@android:drawable/btn_star_big_on"
            android:drawableRight="@android:drawable/btn_star_big_on"
            android:text="회전하기" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:gravity="center"
        android:orientation="vertical">

        <ImageButton
            android:id="@+id/imageButton"
            android:layout_width="311dp"
            android:layout_height="355dp"
            app:srcCompat="@drawable/dog" />
    </LinearLayout>

</LinearLayout>

MainActivity.java

package kr.ac.skuniv.a1005practice3;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;

public class MainActivity extends AppCompatActivity {
    Button btn;
    ImageButton ibtn;
    int angle=0;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btn = (Button) findViewById(R.id.button2);
        ibtn = (ImageButton) findViewById(R.id.imageButton);

        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                angle+=10;
                ibtn.setRotation(angle);
            }
        });
    }
}