动画(二)

例:一个AnimationSet中有两个Animation,效果叠加

 

第一种方法:

 

doubleani.xml

 

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

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

    android:interpolator="@android :anim/accelerate_interpolator"

    android:shareInterpolator="true">

    <!-- fromAlphatoAlpha是起始透明度和结束时透明度 -->

    <alpha

        android:fromAlpha="1.0"

        android:toAlpha="0.0"

        android:startOffset="500"

        android:duration="500"/>

    <translate

        android:fromXDelta="0%"

        android:toXDelta="100%"

        android:fromYDelta="0%"

        android:toYDelta="100%"

        android:duration="2000"/>

</set>

 

.java文件中

 

classDoubleButtonListener implements OnClickListener {

       public void onClick(View v) {

           // 使用AnimationUtils装载动画配置文件

           Animation animation = AnimationUtils.loadAnimation(

                  Animation2Activity.this, R.anim. doubleani);

           // 启动动画

           image.startAnimation(animation);

       }

    }

 

第二种方法:

 

.java文件中

 

classDoubleButtonListener implements OnClickListener {

       public void onClick(View v) {

           AnimationSet animationSet = new AnimationSet(true);

           AlphaAnimation alphaAnimation = new AlphaAnimation(1, 0);

           RotateAnimation rotateAnimation = new RotateAnimation(0, 360,

                  Animation.RELATIVE_TO_SELF,0.5f,

                  Animation.RELATIVE_TO_SELF,0.5f);

           rotateAnimation.setDuration(1000);

           animationSet.addAnimation(rotateAnimation);

           animationSet.addAnimation(alphaAnimation);

           image.startAnimation(animationSet);

 

       }

    }

 

Interpolator的具体使用方法

 

       Interpolator定义了动画变化的速率,在Animations框架当中定义了一下几种Interpolator

?         AccelerateDecelerateInterpolator:在动画开始与结束的地方速率改变比较慢,在中间的时候速率快。

?         AccelerateInterpolator:在动画开始的地方速率改变比较慢,然后开始加速

?         CycleInterpolator:动画循环播放特定的次数,速率改变沿着正弦曲线

?         DecelerateInterpolator:在动画开始的地方速率改变比较慢,然后开始减速

?         LinearInterpolator:动画以均匀的速率改变

分为以下几种情况:

1、在set标签中

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

    android:interpolator="@android :anim/accelerate_interpolator"/>

2、如果在一个set标签中包含多个动画效果,如果想让这些动画效果共享一个Interpolator

    android:shareInterpolator="true"

3、如果不想共享一个interpolator,则设置android:shareInterpolator="true"并且需要在每一个动画效果处添加interpolator

<alpha

        android:interpolator="@android :anim/accelerate_decelerate_interpolator"

        android:fromAlpha="1.0"

        android:toAlpha="0.0"

        android:startOffset="500"

        android:duration="500"/>

 

4、如果是在代码上设置共享一个interpolator则可以在AnimationSet设置interpolator

 

AnimationSet animationSet = newAnimationSet(true);

animationSet.setInterpolator(new AccelerateInterpolator());

 

5、如果不设置共享一个interpolator则可以在每一个Animation对象上面设置interpolator

 

AnimationSet animationSet = newAnimationSet(false);

alphaAnimation.setInterpolator(new AccelerateInterpolator());

rotateAnimation.setInterpolator(new DecelerateInterpolator());

 

Frame-By-Frame Animations的使用方法

 

       Frame-By-Frame Animations是一帧一帧的格式显示动画效果。类似于电影胶片拍摄的手法。

 main.xml

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

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

    android:orientation="vertical"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent">

    <LinearLayout

        android:orientation="horizontal"

        android:layout_height="wrap_content"

        android:layout_width="wrap_content">

       <Button

           android:id="@+id/button"

               android:layout_width="wrap_content"

               android:layout_height="wrap_content"

               android:text="运动"/>

    </LinearLayout>

    <LinearLayout

        android:orientation="vertical"

        android:layout_width="fill_parent"

        android:layout_height="fill_parent">

       <ImageView

           android:id="@+id/image"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_centerInParent="true"/>

    </LinearLayout>

</LinearLayout>

 

3、anim.xml

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

<animation-list xmlns:android="http://schemas.android.com/apk/res/android"

    android:oneshot="false">

    <item android:drawable="@drawable/a_01" android:duration="50"/>

    <item android:drawable="@drawable/a_02" android:duration="50"/>

    <item android:drawable="@drawable/a_03" android:duration="50"/>

    <item android:drawable="@drawable/a_04" android:duration="50"/>

    <item android:drawable="@drawable/a_05" android:duration="50"/>

    <item android:drawable="@drawable/a_06" android:duration="50"/>

</animation-list>

 

4.java文件

importandroid.app.Activity;

importandroid.graphics.drawable.AnimationDrawable;

importandroid.os.Bundle;

importandroid.view.View;

importandroid.view.View.OnClickListener;

importandroid.widget.Button;

importandroid.widget.ImageView;

public class AnimationsActivity extends Activity {

    private Button button = null;

    private ImageView imageView = null;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

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

        imageView = (ImageView)findViewById(R.id.image);

        button.setOnClickListener(newButtonListener());

    }

    class ButtonListener implementsOnClickListener{

       public void onClick(View v) {

           imageView.setBackgroundResource(R.anim.anim);

           AnimationDrawable animationDrawable = (AnimationDrawable)

              imageView.getBackground();

           animationDrawable.start();

       }

    }

}

 

   LayoutAnimationsController

1、什么是LayoutAnimationsController

LayoutAnimationsController可以用于实现使多个控件按顺序一个一个的显示。

1)LayoutAnimationsController用于为一个layout里面的控件,或者是一个ViewGroup里面的控件设置统一的动画效果。

2)每一个控件都有相同的动画效果

3)控件的动画效果可以在不同的时间显示出来

4)LayoutAnimationsController可以在xml文件当中设置,以可以在代码当中进行设置。

2、在xml当中使用LayoutAnimationController

1)res/anim文件夹下创建一个名为list_anim_layout.xml文件:

android:delay - 动画间隔时间;子类动画时间间隔 (延迟)   70% 也可以是一个浮点数 如“1.2”等

android:animationOrder - 动画执行的循序(normal:顺序,random:随机,reverse:反向显示)

android:animation – 引用动画效果文件

<layoutAnimation

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

    android:delay="0.5"

    android:animationOrder="normal"

    android:animation="@anim/list_anim"/>

2)创建list_anim.xml文件,设置动画效果

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

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

    android:interpolator="@android:anim/accelerate_interpolator"

    android:shareInterpolator="true">

    <alpha

       android:fromAlpha="0.0"

       android:toAlpha="1.0"

       android:duration="1000"/>

</set>

 

3在布局文件main.xml当中为ListVIew添加如下配置

<ListView

       android:id="@id/android:list"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:scrollbars="vertical"

        android:layoutAnimation="@anim/list_anim_layout"/>

4)程序结构

 

动画(二)

 

 

5)list_anim_layout.xml

<layoutAnimation

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

    android:delay="0.5"

    android:animationOrder="normal"

    android:animation="@anim/list_anim"/>

6)list_anim.xml

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

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

    android:interpolator="@android:anim/accelerate_interpolator"

    android:shareInterpolator="true">

    <alpha

       android:fromAlpha="0.0"

       android:toAlpha="1.0"

       android:duration="1000"/>

</set>

 

7)main.xml

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

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

    android:orientation="vertical"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    >

    <ListView

       android:id="@id/android:list"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:scrollbars="vertical"

        android:layoutAnimation="@anim/list_anim_layout"/>

    <Button

        android:id="@+id/button"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="测试"/>

</LinearLayout>

8)item.xml

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

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

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="horizontal"

    android:paddingLeft="10dip"

    android:paddingRight="10dip"

    android:paddingTop="1dip"

    android:paddingBottom="1dip">

    <TextView android:id="@+id/name"

       android:layout_width="180dip"

       android:layout_height="30dip"

       android:textSize="7px"

       android:singleLine="true" />

    <TextView android:id="@+id/sex"

       android:layout_width="fill_parent"

       android:layout_height="fill_parent"

       android:textSize="7px"

       android:singleLine="true"/>

</LinearLayout>

9)java文件

public class Animation2Activity extendsListActivity {

    private Button button = null;

    private ListView listView = null;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        listView = getListView();

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

        button.setOnClickListener(newButtonListener());

    }

    private ListAdapter createListAdapter() {

       List<HashMap<String,String>> list =

           new ArrayList<HashMap<String,String>>();

       HashMap<String,String> m1 = new HashMap<String,String>();

       m1.put("name", "bauble");

       m1.put("sex", "male");

       HashMap<String,String> m2 = new HashMap<String,String>();

       m2.put("name", "Allorry");

       m2.put("sex", "male");

       HashMap<String,String> m3 = new HashMap<String,String>();

       m3.put("name", "Allotory");

       m3.put("sex", "male");

       HashMap<String,String> m4 = new HashMap<String,String>();

       m4.put("name", "boolbe");

       m4.put("sex", "male");

       list.add(m1);

       list.add(m2);

       list.add(m3);

       list.add(m4);

       SimpleAdapter simpleAdapter = new SimpleAdapter(

              this,list,R.layout.item,new String[]{"name","sex"},

              new int[]{R.id.name,R.id.sex});

       return simpleAdapter;

    }

    private class ButtonListener implementsOnClickListener{

       public void onClick(View v) {

           listView.setAdapter(createListAdapter());

       }

    }

}

 

备注:要将整个动画效果设置到LinerLayout中,可以这样设置:

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

    android:orientation="vertical"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:layoutAnimation="@anim/list_anim_layout"

 

3、在代码当中使用LayoutAnimationController

1)去掉main.xml中的android:layoutAnimation="@anim/list_anim_layout"/>

2)创建一个Animation对象:可以通过装载xml文件,或者是直接使用Animation的构造方法创建Animation对象;

Animation animation = (Animation) AnimationUtils.loadAnimation(

                  Animation2Activity.this, R.anim.list_anim);

3)创建LayoutAnimationController对象:  

LayoutAnimationController controller = new LayoutAnimationController(animation); 

            

4)设置控件的显示顺序以及延迟时间

controller.setOrder(LayoutAnimationController.ORDER_NORMAL); 

controller.setDelay(0.5f);        

5)为ListView设置LayoutAnimationController属性:

listView.setLayoutAnimation(controller);

完整代码:

private class ButtonListener implementsOnClickListener {

       public void onClick(View v) {

           listView.setAdapter(createListAdapter());

           Animation animation = (Animation) AnimationUtils.loadAnimation(

                  Animation2Activity.this, R.anim.list_anim);

          

           LayoutAnimationController controller = new LayoutAnimationController(animation); 

           controller.setOrder(LayoutAnimationController.ORDER_NORMAL); 

           controller.setDelay(0.5f);

           listView.setLayoutAnimation(controller); 

       }

    }

 

 AnimationListener

1、什么是AnimationListener

1).AnimationListener是一个监听器,该监听器在动画执行的各个阶段会得到通知,从而调用相应的方法;

2).AnimationListener主要包括如下三个方法:

n         ·onAnimationEnd(Animation animation) - 当动画结束时调用

n         ·onAnimationRepeat(Animation animation) - 当动画重复时调用

n         ·onAniamtionStart(Animation animation) - 当动画启动时调用

2、具体实现

1main.xml

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

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

    android:id="@+id/layout"

    android:orientation="vertical"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent">

    <Button android:id="@+id/addButton"

       android:layout_width="fill_parent"

       android:layout_height="wrap_content"

       android:layout_alignParentBottom="true"

       android:text="添加图片" />

    <Button android:id="@+id/deleteButton"

       android:layout_width="fill_parent"

       android:layout_height="wrap_content"

       android:layout_above="@id/addButton"

       android:text="删除图片" />

    <ImageView android:id="@+id/image"

       android:layout_width="wrap_content"

       android:layout_height="wrap_content"

       android:layout_centerInParent="true"

       android:layout_marginTop="100dip"

       android:src="@drawable/an" />

</RelativeLayout>

2).java文件

public class Animation2Activity extends Activity {

    private Button addButton = null;

    private Button deleteButton = null;

    private ImageView imageView = null;

    private ViewGroup viewGroup = null;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        addButton = (Button)findViewById(R.id.addButton);

        deleteButton = (Button)findViewById(R.id.deleteButton);

        imageView = (ImageView)findViewById(R.id.image);

        //LinearLayout下的一组控件

        viewGroup = (ViewGroup)findViewById(R.id.layout);

        addButton.setOnClickListener(newAddButtonListener());

        deleteButton.setOnClickListener(newDeleteButtonListener());

    }

    private class AddButtonListener implements OnClickListener{

       public void onClick(View v) {

           //淡入

           AlphaAnimation animation = new AlphaAnimation(0.0f, 1.0f);

           animation.setDuration(1000);

           animation.setStartOffset(500);

           //创建一个新的ImageView

           ImageView newImageView = new ImageView(

              Animation2Activity.this);

           newImageView.setImageResource(R.drawable.an);

           viewGroup.addView(newImageView,

              new LayoutParams(

                  LayoutParams.FILL_PARENT,

                  LayoutParams.WRAP_CONTENT));

           newImageView.startAnimation(animation);

       }

    }

    private class DeleteButtonListener implements OnClickListener{

       public void onClick(View v) {

           //淡出

           AlphaAnimation animation = new AlphaAnimation(1.0f, 0.0f);

           animation.setDuration(1000);

           animation.setStartOffset(500);

           //Aniamtion对象设置监听器

           animation.setAnimationListener(

              new RemoveAnimationListener());

           imageView.startAnimation(animation);

       }

    }

    private class RemoveAnimationListener implements AnimationListener{

       //动画效果执行完时remove

       public void onAnimationEnd(Animation animation) {

           System.out.println("onAnimationEnd");

           viewGroup.removeView(imageView);

       }

       public void onAnimationRepeat(Animation animation) {

           System.out.println("onAnimationRepeat");

       }

       public void onAnimationStart(Animation animation) {

           System.out.println("onAnimationStart");

       }

    }

}

3、总结一下

可以在Activity中动态添加和删除控件,方法是:

1)取到那个Layout

viewGroup = (ViewGroup)findViewById(R.id.layout);

2)添加时,先创建对象,然后添加

ImageView newImageView = new ImageView(

              Animation2Activity.this);

newImageView.setImageResource(R.drawable.an);

viewGroup.addView(newImageView,

              new LayoutParams(

                  LayoutParams.FILL_PARENT,

                  LayoutParams.WRAP_CONTENT));

3)删除时,直接删除。

viewGroup.removeView(imageView);


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