android通過xml檔案實現Animation動畫

標籤：

Rotate的xml檔案編寫方法

    <rotate        android:fromDegrees="0"        android:toDegrees="+350"        android:pivotX="50%"        android:pivotY="50%"        android:duration="1000"/>

*android:toDegrees="+350"正號代表的是旋轉方向，正號為順時針，負號為逆時針

*android:pivotX的值共有三種設定方法

1.android:pivotX="50"這種方法使用絕對位置定位(螢幕位置座標上50這個點)

2.android:pivotX="50%"這種方法使用相對於控制項本身定位

3.android:pivotX="50%p"這種方法相對於控制項的父控制項定位

其他幾種動畫的寫法與此類似

 

MainActivity.java

public class MainActivity extends Activity {    private ImageView imageView;    private Button button_1;    private Button button_2;    private Button button_3;    private Button button_4;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                imageView = (ImageView)findViewById(R.id.imageView);        button_1 = (Button)findViewById(R.id.button_1);        button_2 = (Button)findViewById(R.id.button_2);        button_3 = (Button)findViewById(R.id.button_3);        button_4 = (Button)findViewById(R.id.button_4);                AlphaButtonListener alphaButtonListener = new AlphaButtonListener();        RotateButtonListener rotateButtonListener = new RotateButtonListener();        ScaleButtonListener scaleButtonListener = new ScaleButtonListener();        TranslateButtonListener translateButtonListener = new TranslateButtonListener();                button_1.setOnClickListener(alphaButtonListener);        button_2.setOnClickListener(rotateButtonListener);        button_3.setOnClickListener(scaleButtonListener);        button_4.setOnClickListener(translateButtonListener);    }    //淡入淡出    private class AlphaButtonListener implements OnClickListener {        @Override        public void onClick(View v) {            //使用AnimationUtils裝載動畫檔案            Animation animation = AnimationUtils.loadAnimation(MainActivity.this, R.anim.alpha);            imageView.startAnimation(animation);        }    }    //旋轉    private class RotateButtonListener implements OnClickListener {        @Override        public void onClick(View v) {            Animation animation = AnimationUtils.loadAnimation(MainActivity.this, R.anim.rotate);            imageView.startAnimation(animation);        }    }    //水平     private class TranslateButtonListener implements OnClickListener {        @Override        public void onClick(View v) {            Animation animation = AnimationUtils.loadAnimation(MainActivity.this, R.anim.translate);            imageView.startAnimation(animation);        }    }    //縮放    private class ScaleButtonListener implements OnClickListener {        @Override        public void onClick(View v) {            Animation animation = AnimationUtils.loadAnimation(MainActivity.this, R.anim.scale);            imageView.startAnimation(animation);        }    }}

在res目錄下建立anim檔案夾

alpha.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"    android:interpolator="@android:anim/accelerate_interpolator">        <alpha         android:fromAlpha="1.0"        android:toAlpha="0.0"        android:startOffset="500"        android:duration="500"/></set>

rotate.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"    android:interpolator="@android:anim/accelerate_interpolator">        <rotate         android:fromDegrees="0"        android:toDegrees="360"        android:pivotX="50%"        android:pivotY="50%"        android:duration="3000"/></set>

scale.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android">    <scale         android:fromXScale="1.0"        android:toXScale="0.0"        android:fromYScale="1.0"        android:toYScale="0.0"        android:pivotX="50%"        android:pivotY="50%"        android:duration="1000"/></set>

translate.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"    android:interpolator="@android:anim/accelerate_interpolator">        <translate         android:fromXDelta="50%"        android:toXDelta="100%"        android:fromYDelta="50%"        android:toYDelta="100%"        android:duration="1000"/></set>

 

android通過xml檔案實現Animation動畫