การทำ Animation (Scale) | Phaisarn Sutheebanjard

values/styles.xml

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

    <style name="ButtonStyle">
        <item name="android:layout_width">150dp</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:padding">10dp</item>
        <item name="android:textSize">20sp</item>
        <item name="android:textAllCaps">false</item>
        <item name="android:layout_gravity">center_horizontal</item>
        <item name="android:layout_columnWeight">1</item>
    </style>
</resources>

<item name="colorPrimary">@color/colorPrimary</item>

<item name="colorPrimaryDark">@color/colorPrimaryDark</item>

<item name="colorAccent">@color/colorAccent</item>

</style>

<item name="android:layout_height">wrap_content</item>

<item name="android:textAllCaps">false</item>

<item name="android:layout_gravity">center_horizontal</item>

</style>

</resources>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:columnCount="2"
    tools:context=".MainActivity">

    <ImageView
        android:id="@+id/img"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_columnSpan="2"
        android:layout_gravity="center_horizontal"
        android:layout_marginBottom="10dp"
        android:src="@drawable/bird" />

    <Button
        android:id="@+id/bt_scale_x"
        style="@style/ButtonStyle"
        android:layout_gravity="right"
        android:text="Scale X" />

    <Button
        android:id="@+id/bt_scale_y"
        style="@style/ButtonStyle"
        android:layout_gravity="left"
        android:text="Scale Y" />

    <Button
        android:id="@+id/bt_zoom_out"
        style="@style/ButtonStyle"
        android:layout_gravity="right"
        android:text="Zoom Out" />

    <Button
        android:id="@+id/bt_zoom_in"
        style="@style/ButtonStyle"
        android:layout_gravity="left"
        android:text="Zoom In" />

</GridLayout>

<?xml version="1.0" encoding="utf-8"?>

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

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:columnCount="2"

tools:context=".MainActivity">

<ImageView

android:id="@+id/img"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_columnSpan="2"

android:layout_gravity="center_horizontal"

android:layout_marginBottom="10dp"

android:src="@drawable/bird" />

<Button

android:id="@+id/bt_scale_x"

style="@style/ButtonStyle"

android:layout_gravity="right"

android:text="Scale X" />

<Button

android:id="@+id/bt_scale_y"

style="@style/ButtonStyle"

android:layout_gravity="left"

android:text="Scale Y" />

<Button

android:id="@+id/bt_zoom_out"

style="@style/ButtonStyle"

android:layout_gravity="right"

android:text="Zoom Out" />

<Button

android:id="@+id/bt_zoom_in"

style="@style/ButtonStyle"

android:layout_gravity="left"

android:text="Zoom In" />

</GridLayout>

MainActivity.java

package com.phaisarn.myapplication;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;

public class MainActivity extends AppCompatActivity {

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

        final ImageView mImage = findViewById(R.id.img);

        findViewById(R.id.bt_scale_x).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mImage.animate().scaleX(0.3f).setDuration(1000).start();
            }
        });

        findViewById(R.id.bt_scale_y).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mImage.animate().scaleY(0.3f).setDuration(1000).start();
            }
        });

        findViewById(R.id.bt_zoom_out).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mImage.animate().scaleX(0.3f).scaleY(0.3f).setDuration(1000).start();
            }
        });

        findViewById(R.id.bt_zoom_in).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mImage.animate().scaleX(1f).scaleY(1f).setDuration(1000).start();
            }
        });
    }
}

package com.phaisarn.myapplication;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.ImageView;

public class MainActivity extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

final ImageView mImage = findViewById(R.id.img);

findViewById(R.id.bt_scale_x).setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

mImage.animate().scaleX(0.3f).setDuration(1000).start();

}

});

findViewById(R.id.bt_scale_y).setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

mImage.animate().scaleY(0.3f).setDuration(1000).start();

}

});

findViewById(R.id.bt_zoom_out).setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

mImage.animate().scaleX(0.3f).scaleY(0.3f).setDuration(1000).start();

}

});

findViewById(R.id.bt_zoom_in).setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

mImage.animate().scaleX(1f).scaleY(1f).setDuration(1000).start();

}

});

}

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