1.AnimationSet是Animation的子类;
2.一个AnimationSet包含了一系列的Animation;
3.针对AnimationSet设置一些Animation的常见属性(如startOffset,duration等),可以被包含在AnimationSet当中的Animation集成;
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">
<!-- fromAlpha和toAlpha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)在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
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
1)main.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);
//为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);