[챕터 2-7-1] 애니메이션

결과화면

화면2 버튼을 누르면 애니메이션으로 확대되다가 축소

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프로젝트명 : MyAnim

 

 

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res/anim

scale.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <scale
        android:duration="2500"
        android:pivotX="50%"
        android:pivotY="50%"
        android:fromXScale="1.0"
        android:fromYScale="1.0"
        android:toXScale="2.0"
        android:toYScale="2.0" />
</set>

 

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layout gravity : center_horizontal

 

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res/anim

scale.xml

package org.minokuma.myanime;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

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

        Button button = findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Animation anim = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.scale);
                v.startAnimation(anim);
            }
        });

    }
}

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res/anim

scale.xml 복사

scale2.xml 생성

 

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <scale
        android:duration="2500"
        android:pivotX="50%"
        android:pivotY="50%"
        android:fromXScale="1.0"
        android:fromYScale="1.0"
        android:toXScale="2.0"
        android:toYScale="2.0" />

    <scale
        android:startOffset="2500"
        android:duration="2500"
        android:pivotX="50%"
        android:pivotY="50%"
        android:fromXScale="1.0"
        android:fromYScale="1.0"
        android:toXScale="0.5"
        android:toYScale="0.5" />
</set>

 

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MainActivity.java

 

package org.minokuma.myanime;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

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

        Button button = findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Animation anim = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.scale);
                v.startAnimation(anim);
            }
        });

        Button button2 = findViewById(R.id.button2);
        button2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Animation anim2 = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.scale2);
                v.startAnimation(anim2);
            }
        });

    }
}

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