android实例-animation,Grid,ImageSwitcher.....

Android动画详细探究

转载：http://www.cnblogs.com/salam/archive/2010/10/05/1842935.html

附件实例包括：animation,AutoComplete,chronometer,时间日期,Elview,画廊，Grid,ImageSwitcher,RatingBar,SeekBar,PragressBar,Spinner

Animation是一个用于View,Surfaces和其它对象实现动画效果的抽象类，

其中常用的类是TranslateAnimation用于控制位置的改变

以下列出一些重要的属性和方法

Xml属性

android:duration：运行动画的时间

android:interpolator：定义用于平滑动画运动的时间内插

android:repeatCount：定义动画重复的时间

方法：

set:RepeatCount(int )：定义动画重复的时间

setRepeatMode(int):通过设置重复时间定义动画的行为

setStartOffset（long）：以毫秒为单位的动画运行前的延迟，一旦开始时间就达到了

Cancel():取消动画

hasStarted()：判断动画是否已在运行

initialize(int width, int height, int parentWidth, int parentHeight)：初始化动画

reset()：重置动画

Start()启动动画

其中还有一些常量

RESTART：重新运行

INFINITE：永无终止地运行


将动画用于指定的控件，所有继承自View的控件都有startAnimation(Animation)方法，通过调用此方法来应用动画于控件

AnimationUtils类介绍
为应用动画提供了通用的的方法，它有一个很重要的方法loadAnimation(Context,Animation)用于加载Animation的实例。

下面是一个实例 源码见附件：
Animationpage.xml是布局文件









Animlayout.xml是动画文件




主程序

package wjq.WidgetDemo;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.view.animation.Transformation;
import android.view.animation.TranslateAnimation;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.ViewFlipper;
import android.widget.AdapterView.OnItemSelectedListener;

/**
* 动画Animation示例
* @author 记忆的永恒
*/
public class AnimationDemo extends Activity implements OnClickListener,OnItemSelectedListener {

private View v;
private String[] mStrings = { "向上", "向右", "穿越","旋转" };
private static final String[] INTERPOLATORS = { "加速", "Decelerate","减速", "左右", "Overshoot","Anticipate/Overshoot", "弹回" };
private ViewFlipper mFlipper;
private Spinner spinner;
private Spinner spinner1;
private ArrayAdapter aa;
private ArrayAdapter aa1;
/*
* (non-Javadoc)
*
* @see android.app.Activity#onCreate(android.os.Bundle)
*/
@Override
protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

setContentView(R.layout.animationpage);

v = findViewById(R.id.login);

v.setOnClickListener(this);

mFlipper = (ViewFlipper) findViewById(R.id.flipper);



// 反转

mFlipper.startFlipping();



spinner = (Spinner) findViewById(R.id.spinner);

aa = new ArrayAdapter(this,

android.R.layout.simple_spinner_item, mStrings);

aa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

spinner.setAdapter(aa);

spinner.setOnItemSelectedListener(this);



spinner1 = (Spinner) findViewById(R.id.spinner1);

aa1 = new ArrayAdapter(this,

android.R.layout.simple_spinner_item, INTERPOLATORS);

aa1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

spinner1.setAdapter(aa1);

spinner1.setOnItemSelectedListener(this);

}



@Override

public void onClick(View v) {

Animation shake = AnimationUtils.loadAnimation(this, R.anim.animlayout);

findViewById(R.id.pw).startAnimation(shake);

}



@Override

public void onItemSelected(AdapterView> parent, View view, int position,

long id) {

if (parent.getAdapter()==aa) {

switch (position) {



case 0:

mFlipper.setInAnimation(AnimationUtils.loadAnimation(this,

R.anim.push_up_in));

mFlipper.setOutAnimation(AnimationUtils.loadAnimation(this,

R.anim.push_up_out));

break;

case 1:

mFlipper.setInAnimation(AnimationUtils.loadAnimation(this,

R.anim.push_left_in));

mFlipper.setOutAnimation(AnimationUtils.loadAnimation(this,

R.anim.push_left_out));

break;

case 2:

mFlipper.setInAnimation(AnimationUtils.loadAnimation(this,

android.R.anim.fade_in));

mFlipper.setOutAnimation(AnimationUtils.loadAnimation(this,

android.R.anim.fade_out));

break;

default:

mFlipper.setInAnimation(AnimationUtils.loadAnimation(this,

R.anim.hyperspace_in));

mFlipper.setOutAnimation(AnimationUtils.loadAnimation(this,

R.anim.hyperspace_out));

break;

}

}



else {

final View target = findViewById(R.id.target);

final View targetParent = (View) target.getParent();

Animation anm = new TranslateAnimation(0.0f, targetParent

.getWidth()

- target.getWidth()

- targetParent.getPaddingLeft()

- targetParent.getPaddingRight(), 0.0f, 0.0f);



anm.setDuration(1000);

anm.setStartOffset(300);

anm.setRepeatMode(Animation.RESTART);

anm.setRepeatCount(Animation.INFINITE);



switch (position) {

case 0:

anm.setInterpolator(AnimationUtils.loadInterpolator(this,

android.R.anim.accelerate_interpolator));

break;

case 1:

anm.setInterpolator(AnimationUtils.loadInterpolator(this,

android.R.anim.decelerate_interpolator));

break;

case 2:

anm.setInterpolator(AnimationUtils.loadInterpolator(this,

android.R.anim.accelerate_decelerate_interpolator));

break;

case 3:

anm.setInterpolator(AnimationUtils.loadInterpolator(this,

android.R.anim.anticipate_interpolator));

break;

case 4:

anm.setInterpolator(AnimationUtils.loadInterpolator(this,

android.R.anim.overshoot_interpolator));

break;

case 5:

anm.setInterpolator(AnimationUtils.loadInterpolator(this,

android.R.anim.anticipate_overshoot_interpolator));

break;

case 6:

anm.setInterpolator(AnimationUtils.loadInterpolator(this,

android.R.anim.bounce_interpolator));

break;

}



target.startAnimation(anm);

}



}



@Override

public void onNothingSelected(AdapterView parent) {

// TODO Auto-generated method stub



}



}