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Android动画之Tween动画实现

2014-11-22 20:44 288 查看
Android 平台提供了两类动画。 一类是Tween动画,就是对场景里的对象不断的进行图像变化来产生动画效果(旋转、平移、放缩和渐变)。第二类就是 Frame动画,即顺序的播放事先做好的图像,与gif图片原理类似。下面就讲一下Tweene Animations。 主要类: Animation  动画AlphaAnimation 渐变透明度RotateAnimation 画面旋转ScaleAnimation 渐变尺寸缩放TranslateAnimation 位置移动AnimationSet  动画集一、等待动画实现在我们应用程序当中,经常会使用到等待动画,那么首先我们就来实现这个1.1首先,当然是布局啦activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#fff"
>
<RelativeLayout
android:layout_width="180dp"
android:layout_height="180dp"
android:layout_centerInParent="true"
android:background="@drawable/loading_bg" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:orientation="vertical" >
<ProgressBar
android:id="@+id/progressBar1"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="正在登录"
android:layout_marginTop="10dp"
android:textColor="#fff"
android:textSize="20sp"
/>
</LinearLayout>
</RelativeLayout>
</RelativeLayout>
1.2其次,就是实现啦MainActivity.java
public class MainActivity extends Activity {

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

//延迟一段时间后跳转到另一个界面
new Handler().postDelayed(new Runnable(){
@Override
public void run(){
Intent intent = new Intent(MainActivity.this,SecondActivity.class);
startActivity(intent);
MainActivity.this.finish();
Toast.makeText(getApplicationContext(), "跳转成功", Toast.LENGTH_SHORT).show();
}
}, 2000);
}
}
1.3实现效果如图二、开门动画实现2.1首先,当然是布局啦second.xml
<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#000"
>

<ImageView
android:id="@+id/imageLeft"
android:scaleType="fitXY"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentLeft="true"
android:src="@drawable/w_left" />
<ImageView
android:id="@+id/imageRight"
android:visibility="visible"
android:scaleType="fitXY"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentRight="true"
android:src="@drawable/w_right" />
<TextView
android:id="@+id/anim_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_alignParentTop="true"
android:layout_marginTop="35dp"
android:text=" \n \nthis is a test!\n \n "
android:textSize="22sp"
android:textColor="#fff"
/>

</RelativeLayout>
2.2其次,就是实现啦SecondActivity.java
public class SecondActivity extends Activity
{
private ImageView mLeft;
private ImageView mRight;
private TextView mText;

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.second);

mLeft = (ImageView)findViewById(R.id.imageLeft);
mRight = (ImageView)findViewById(R.id.imageRight);
mText = (TextView)findViewById(R.id.anim_text);

//往左移动
AnimationSet anim = new AnimationSet(true);
TranslateAnimation mytranslateanim = new TranslateAnimation(Animation.RELATIVE_TO_SELF,0f,Animation.RELATIVE_TO_SELF,-1f,Animation.RELATIVE_TO_SELF,0f,Animation.RELATIVE_TO_SELF,0f);
mytranslateanim.setDuration(2000);
anim.setStartOffset(800);
anim.addAnimation(mytranslateanim);
anim.setFillAfter(true);
mLeft.startAnimation(anim);

//往右移动
AnimationSet anim1 = new AnimationSet(true);
TranslateAnimation mytranslateanim1 = new TranslateAnimation(Animation.RELATIVE_TO_SELF,0f,Animation.RELATIVE_TO_SELF,+1f,Animation.RELATIVE_TO_SELF,0f,Animation.RELATIVE_TO_SELF,0f);
mytranslateanim1.setDuration(1500);
anim1.addAnimation(mytranslateanim1);
anim1.setStartOffset(800);
anim1.setFillAfter(true);
mRight.startAnimation(anim1);

//文字变换
AnimationSet anim2 = new AnimationSet(true);
ScaleAnimation myscaleanim = new ScaleAnimation(1f,3f,1f,3f,Animation.RELATIVE_TO_SELF,0.5f,Animation.RELATIVE_TO_SELF,0.5f);
myscaleanim.setDuration(1000);
AlphaAnimation myalphaanim = new AlphaAnimation(1,0.0001f);
myalphaanim.setDuration(1500);
anim2.addAnimation(myscaleanim);
anim2.addAnimation(myalphaanim);
anim2.setFillAfter(true);
mText.startAnimation(anim2);

//持续一段时间后跳转
new Handler().postDelayed(new Runnable(){
@Override
public void run(){
Intent intent = new Intent(SecondActivity.this,ThirdActivity.class);
startActivity(intent);
SecondActivity.this.finish();
}
}, 2000);
}

}
2.3实现效果如图   三、透明旋转缩放移动动画实现及其混合实现3.1首先,当然是布局啦third.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#000" >

<TextView
android:id="@+id/tv1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="透明动画测试AlphaAnimation"
android:textColor="#f00"
android:textSize="20sp"/>

<View
android:layout_width="fill_parent"
android:layout_height="10dip"
android:background="?android:attr/listDivider"/>

<TextView
android:id="@+id/tv2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="旋转动画测试RotateAnimation"
android:textColor="#0f0"
android:textSize="20sp"/>

<View
android:layout_width="fill_parent"
android:layout_height="10dip"
android:background="?android:attr/listDivider"/>

<TextView
android:id="@+id/tv3"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="缩放动画测试ScaleAnimation"
android:textColor="#00f"
android:textSize="20sp"/>

<View
android:layout_width="fill_parent"
android:layout_height="10dip"
android:background="?android:attr/listDivider"/>

<TextView
android:id="@+id/tv4"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="移动动画测试TranslateAnimation"
android:textColor="#ff0"
android:textSize="20sp"/>

<View
android:layout_width="fill_parent"
android:layout_height="10dip"
android:background="?android:attr/listDivider"/>

<TextView
android:id="@+id/tv5"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="多个动画同时生效测试AnimationSet"
android:textColor="#f0f"
android:textSize="20sp"/>

</LinearLayout>
3.2其次,就是实现啦ThirdActivity.java
public class ThirdActivity extends Activity
{
private TextView mTextView1 = null;
private TextView mTextView2 = null;
private TextView mTextView3 = null;
private TextView mTextView4 = null;
private TextView mTextView5 = null;

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.third);

//透明动画测试 AlphaAnimation
mTextView1 = (TextView)findViewById(R.id.tv1);
//初始化 其中AlphaAnimation类第一个参数fromAlpha表示动画起始时的透明度,第二个参数toAlpha表示动画结束时的透明度
Animation alphaAnimation = new AlphaAnimation(0.1f, 1.0f);
//设置动画时间 setDuration用来设置动画持续时间
alphaAnimation.setDuration(5000);
mTextView1.startAnimation(alphaAnimation);
/*其中AlphaAnimation类第一个参数fromAlpha表示动画起始时的透明度, 第二个参数toAlpha表示动画结束时的透明度。
setDuration用来设置动画持续时间。*/

//旋转动画测试 RotateAnimation
mTextView2 = (TextView)findViewById(R.id.tv2);
Animation rotateAnimation = new RotateAnimation(0f, 360f);
rotateAnimation.setDuration(5000);
mTextView2.startAnimation(rotateAnimation);
/*其中RotateAnimation类第一个参数fromDegrees表示动画起始时的角度, 第二个参数toDegrees表示动画结束时的角度。
另外还可以设置伸缩模式pivotXType、pivotYType, 伸缩动画相对于x,y 坐标的开始位置pivotXValue、pivotYValue等。*/

//缩放动画测试 ScaleAnimation
mTextView3 = (TextView)findViewById(R.id.tv3);
//初始化
Animation scaleAnimation = new ScaleAnimation(0.1f, 1.0f,0.1f,1.0f);
//设置动画时间
scaleAnimation.setDuration(5000);
mTextView3.startAnimation(scaleAnimation);
/*第一个参数fromX ,第二个参数toX:分别是动画起始、结束时X坐标上的伸缩尺寸。
第三个参数fromY ,第四个参数toY:分别是动画起始、结束时Y坐标上的伸缩尺寸。
另外还可以设置伸缩模式pivotXType、pivotYType, 伸缩动画相对于x,y 坐标的开始位置pivotXValue、pivotYValue等。*/

//移动动画测试 TranslateAnimation
mTextView4 = (TextView)findViewById(R.id.tv4);
//初始化
Animation translateAnimation = new TranslateAnimation(0.1f, 100.0f,0.1f,100.0f);
//设置动画时间
translateAnimation.setDuration(5000);
mTextView4.startAnimation(translateAnimation);
/*第一个参数fromXDelta ,第二个参数toXDelta:分别是动画起始、结束时X坐标。
第三个参数fromYDelta ,第四个参数toYDelta:分别是动画起始、结束时Y坐标。*/

//多个动画同时生效 AnimationSet
mTextView5 = (TextView)findViewById(R.id.tv5);
//初始化 Alpha动画
Animation alphaAnimation5 = new AlphaAnimation(0.1f, 1.0f);
//初始化 Rotate动画
Animation rotateAnimation5 = new RotateAnimation(0f, 360f);
//初始化 Scale动画
Animation scaleAnimation5 = new ScaleAnimation(0.1f, 1.0f,0.1f,1.0f);
//初始化 Translate动画
Animation translateAnimation5 = new TranslateAnimation(0.1f, 100.0f,0.1f,100.0f);
//动画集
AnimationSet set = new AnimationSet(true);
set.addAnimation(alphaAnimation5);
set.addAnimation(rotateAnimation5);
set.addAnimation(scaleAnimation5);
set.addAnimation(translateAnimation5);
//设置动画时间 (作用到每个动画)
set.setDuration(5000);
mTextView5.startAnimation(set);

new Handler().postDelayed(new Runnable(){
@Override
public void run(){
Intent intent = new Intent(ThirdActivity.this,FourActivity.class);
startActivity(intent);
ThirdActivity.this.finish();
}
}, 6000);
}
}
3.3实现效果如图 四、重写View实现动画效果4.1首先,重写ViewTweenAnim.java
public class TweenAnim extends View
{
//Alpha动画 - 渐变透明度
private Animation alphaAnimation = null;
//Sacle动画 - 渐变尺寸缩放
private Animation scaleAnimation = null;
//Translate动画 - 位置移动
private Animation translateAnimation = null;
//Rotate动画 - 画面旋转
private Animation rotateAnimation = null;

public TweenAnim(Context context) {
super(context);

//初始化 Alpha动画
alphaAnimation = new AlphaAnimation(0.1f, 1.0f);
//初始化 Rotate动画
rotateAnimation = new RotateAnimation(0f, 360f);
//初始化 Scale动画
scaleAnimation = new ScaleAnimation(0.1f, 1.0f,0.1f,1.0f);
//初始化 Translate动画
translateAnimation = new TranslateAnimation(0.1f, 300.0f,0.1f,300.0f);

//动画集
AnimationSet set = new AnimationSet(true);
set.addAnimation(alphaAnimation);
set.addAnimation(rotateAnimation);
set.addAnimation(scaleAnimation);
set.addAnimation(translateAnimation);

//设置动画时间 (作用到每个动画)
set.setDuration(5000);
this.startAnimation(set);

}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
Log.e("Tween", "onDraw");
//加载一个图片
canvas.drawBitmap(((BitmapDrawable)getResources().getDrawable(R.drawable.background1)).getBitmap(), 0, 0, null);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
Log.e("Tween", "onKeyDown");
return true;
}
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
Log.e("Tween", "onKeyDown");
switch (keyCode) {
case KeyEvent.KEYCODE_DPAD_UP:
Log.e("Tween", "onKeyDown - KEYCODE_DPAD_UP");
break;
case KeyEvent.KEYCODE_DPAD_DOWN:
Log.e("Tween", "onKeyDown - KEYCODE_DPAD_DOWN");
break;
case KeyEvent.KEYCODE_DPAD_LEFT:
Log.e("Tween", "onKeyDown - KEYCODE_DPAD_LEFT");
break;
case KeyEvent.KEYCODE_DPAD_RIGHT:
Log.e("Tween", "onKeyDown - KEYCODE_DPAD_RIGHT");
break;
case KeyEvent.KEYCODE_DPAD_CENTER:
break;
default:
break;
}
return true;
}
}
在Activity中调用该类时,需要注意一定setFocusable(true), 否则焦点在Activity上的话,onKeyUp方法是不会生效的。4.2其次,就是实现啦FourActivity.java
public class FourActivity extends Activity
{
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);

TweenAnim anim = new TweenAnim(FourActivity.this);
anim.setFocusable(true);
setContentView(anim);

new Handler().postDelayed(new Runnable(){
@Override
public void run(){
Intent intent = new Intent(FourActivity.this,FiveActivity.class);
startActivity(intent);
FourActivity.this.finish();
}
}, 6000);
}
}
4.3实现效果如图
五、利用XML实现动画效果5.1布局文件透明度alpha_anim.xml<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"><alphaandroid:fromAlpha="0.1"android:toAlpha="1.0"android:duration="2000"/></set>alpha动画参数
XML节点功能说明
alpha透明度动画
fromAlpha动画起始时透明度0.0表示完全透明1.0表示完全不透明以上值取0.0-1.0之间的float数据类型的数字
toAlpha动画结束时透明度
旋转rotate_anim.xml
<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"><rotateandroid:interpolator="@android:anim/accelerate_decelerate_interpolator"android:fromDegrees="0"android:toDegrees="360"android:pivotX="50%"android:pivotY="50%"android:duration="2000"/></set>
rotate动画参数
XML节点功能说明
rotate旋转动画
fromDegrees动画起始时物件的角度当角度为负数——表示逆时针旋转当角度为正数——表示顺时针旋转(负数from——to正数:顺时针旋转)(负数from——to负数:逆时针旋转)(正数from——to正数:顺时针旋转)(正数from——to负数:逆时针旋转)
toDegrees属性为动画结束时物件旋转的角度 可以大于360度
pivotXpivotY为动画相对于物件的X、Y坐标的开始位以上两个属性值 从0%-100%中取值50%为物件的X或Y方向坐标上的中点位置
缩放scale_anim.xml
<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"><scaleandroid:interpolator="@android:anim/accelerate_decelerate_interpolator"android:fromXScale="0.0"android:toXScale="1.0"android:fromYScale="0.0"android:toYScale="1.0"android:pivotX="50%"android:pivotY="50%"android:fillAfter="false"android:duration="2000"/></set>
scale动画参数
XML节点功能说明
scale缩放动画
fromXScale[float]fromYScale[float]动画起始时,X、Y坐标上的伸缩尺寸0.0表示收缩到没有1.0表示正常无伸缩值小于1.0表示收缩值大于1.0表示放大
toXScale [float]toYScale[float]动画结束时,X、Y坐标上的伸缩尺寸
pivotX[float]pivotY[float]动画相对于物件的X、Y坐标的开始位置从0%-100%中取值,50%为物件的X或Y方向坐标上的中点位置
移动translate_anim.xml
<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"><translateandroid:fromXDelta="10"android:toXDelta="300"android:fromYDelta="10"android:toYDelta="300"/></set>
translate动画参数
XML节点功能说明
translate移动动画
fromXDeltatoXDelta动画、结束起始时 X坐标上的位置
fromYDeltatoYDelta动画、结束起始时 Y坐标上的位置
Tween Animation共同的节点属性
属性[类型]功能备注
Duration[long]属性为动画持续时间时间以毫秒为单位
fillAfter [boolean]当设置为true ,该动画转化在动画结束后被应用
fillBefore[boolean]当设置为true ,该动画转化在动画开始前被应用
interpolator指定一个动画的插入器有一些常见的插入器accelerate_decelerate_interpolator加速-减速 动画插入器accelerate_interpolator加速-动画插入器decelerate_interpolator减速- 动画插入器其他的属于特定的动画效果
repeatCount[int]动画的重复次数
RepeatMode[int]定义重复的行为1:重新开始  2:plays backward
startOffset[long]动画之间的时间间隔,从上次动画停多少时间开始执行下个动画
zAdjustment[int]定义动画的Z Order的改变0:保持Z Order不变1:保持在最上层-1:保持在最下层
5.2其次,就是重写View啦TweenAnim2.java
public class TweenAnim2 extends View {//Alpha动画 - 渐变透明度private Animation alphaAnimation = null;//Sacle动画 - 渐变尺寸缩放private Animation scaleAnimation = null;//Translate动画 - 位置移动private Animation translateAnimation = null;//Rotate动画 - 画面旋转private Animation rotateAnimation = null;public TweenAnim2(Context context) {super(context);//初始化 Alpha动画alphaAnimation = AnimationUtils.loadAnimation(this.getContext(), R.anim.alpha_anim);//初始化 Rotate动画rotateAnimation = AnimationUtils.loadAnimation(this.getContext(), R.anim.rotate_anim);//初始化 Scale动画scaleAnimation = AnimationUtils.loadAnimation(this.getContext(), R.anim.scale_anim);//初始化 Translate动画translateAnimation = AnimationUtils.loadAnimation(this.getContext(), R.anim.translate_anim);//动画集AnimationSet set = new AnimationSet(true);set.addAnimation(alphaAnimation);set.addAnimation(rotateAnimation);set.addAnimation(scaleAnimation);set.addAnimation(translateAnimation);//设置动画时间 (作用到每个动画)set.setDuration(5000);this.startAnimation(set);}@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);Log.e("Tween", "onDraw");//加载一个图片canvas.drawBitmap(((BitmapDrawable)getResources().getDrawable(R.drawable.background2)).getBitmap(), 0, 0, null);}@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {Log.e("Tween", "onKeyDown");return true;}@Overridepublic boolean onKeyUp(int keyCode, KeyEvent event) {Log.e("Tween", "onKeyDown");switch (keyCode) {case KeyEvent.KEYCODE_DPAD_UP:Log.e("Tween", "onKeyDown - KEYCODE_DPAD_UP");break;case KeyEvent.KEYCODE_DPAD_DOWN:Log.e("Tween", "onKeyDown - KEYCODE_DPAD_DOWN");this.startAnimation(rotateAnimation);break;case KeyEvent.KEYCODE_DPAD_LEFT:Log.e("Tween", "onKeyDown - KEYCODE_DPAD_LEFT");break;case KeyEvent.KEYCODE_DPAD_RIGHT:Log.e("Tween", "onKeyDown - KEYCODE_DPAD_RIGHT");break;case KeyEvent.KEYCODE_DPAD_CENTER:Log.e("Tween", "onKeyDown - KEYCODE_DPAD_CENTER");break;default:break;}return true;}}
5.3然后,就是实现啦FiveActivity.java
public class FiveActivity extends Activity{@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);TweenAnim2 anim = new TweenAnim2(FiveActivity.this);anim.setFocusable(true);setContentView(anim);}}
5.4实现效果如图  做了一天的成果,希望对大家有所帮助,谢谢!源码下载
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