androidswitcher的使用

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<?xml version="1.0" encoding="UTF-8"?><FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent" >    <ImageSwitcher        android:id="@+id/imageSwitcher1"        android:layout_width="fill_parent"        android:layout_height="fill_parent">    </ImageSwitcher>        <RelativeLayout            android:layout_width="fill_parent"            android:layout_height="wrap_content"           android:orientation="vertical" >            <LinearLayout                android:id="@+id/viewGroup"                android:layout_width="fill_parent"                android:layout_height="wrap_content"                android:layout_alignParentBottom="true"               android:layout_marginBottom="30dp"                android:gravity="center_horizontal"                android:orientation="horizontal" >            </LinearLayout>        </RelativeLayout></FrameLayout>

package com.example.photoalbum;import android.app.Activity;import android.os.Bundle;import android.view.MotionEvent;import android.view.View;import android.view.View.OnTouchListener;import android.view.ViewGroup;import android.view.animation.AnimationUtils;import android.widget.ImageSwitcher;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.RelativeLayout.LayoutParams;import android.widget.Toast;import android.widget.ViewSwitcher.ViewFactory;public class ShowPhotoActivity extends Activity implements ViewFactory, OnTouchListener{/*** ImagaSwitcher 的引用*/private ImageSwitcher mImageSwitcher;/*** 图片id数组*/private int[] imgIds;/*** 当前选中的图片id序号*/private int currentPosition;/*** 按下点的X坐标*/private float downX;/*** 装载点点的容器*/private LinearLayout linearLayout;/*** 点点数组*/private ImageView[] tips; @Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.show_photo);imgIds = new int[]{R.drawable.item01,R.drawable.item02,R.drawable.item03,R.drawable.item04,R.drawable.item05, R.drawable.item06, R.drawable.item07, R.drawable.item08,R.drawable.item09,R.drawable.item10, R.drawable.item11, R.drawable.item12};//实例化ImageSwitchermImageSwitcher  = (ImageSwitcher) findViewById(R.id.imageSwitcher1);//设置FactorymImageSwitcher.setFactory(this);//设置OnTouchListener，我们通过Touch事件来切换图片mImageSwitcher.setOnTouchListener(this);linearLayout = (LinearLayout) findViewById(R.id.viewGroup);tips = new ImageView[imgIds.length];for(int i=0; i<imgIds.length; i++){ImageView mImageView = new ImageView(this);tips[i] = mImageView;LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(new ViewGroup.LayoutParams(LayoutParams.WRAP_CONTENT,                        LayoutParams.WRAP_CONTENT));  layoutParams.rightMargin = 3;layoutParams.leftMargin = 3;mImageView.setBackgroundResource(R.drawable.page_indicator_unfocused);linearLayout.addView(mImageView, layoutParams);}//这个我是从上一个界面传过来的，上一个界面是一个GridViewcurrentPosition = getIntent().getIntExtra("position", 0);mImageSwitcher.setImageResource(imgIds[currentPosition]);setImageBackground(currentPosition);}/**      * 设置选中的tip的背景      * @param selectItems      */      private void setImageBackground(int selectItems){          for(int i=0; i<tips.length; i++){              if(i == selectItems){              tips[i].setBackgroundResource(R.drawable.page_indicator_focused);              }else{              tips[i].setBackgroundResource(R.drawable.page_indicator_unfocused);              }          }      } @Overridepublic View makeView() {final ImageView i = new ImageView(this);i.setBackgroundColor(0xff000000);i.setScaleType(ImageView.ScaleType.CENTER_CROP);i.setLayoutParams(new ImageSwitcher.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));return i ;}@Overridepublic boolean onTouch(View v, MotionEvent event) {switch (event.getAction()) {case MotionEvent.ACTION_DOWN:{//手指按下的X坐标downX = event.getX();break;}case MotionEvent.ACTION_UP:{float lastX = event.getX();//抬起的时候的X坐标大于按下的时候就显示上一张图片if(lastX > downX){if(currentPosition > 0){//设置动画，这里的动画比较简单，不明白的去网上看看相关内容mImageSwitcher.setInAnimation(AnimationUtils.loadAnimation(getApplication(), R.anim.left_in));mImageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(getApplication(), R.anim.right_out));currentPosition --;mImageSwitcher.setImageResource(imgIds[currentPosition % imgIds.length]);setImageBackground(currentPosition);}else{Toast.makeText(getApplication(), "已经是第一张", Toast.LENGTH_SHORT).show();}} if(lastX < downX){if(currentPosition < imgIds.length - 1){mImageSwitcher.setInAnimation(AnimationUtils.loadAnimation(getApplication(), R.anim.right_in));mImageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(getApplication(), R.anim.lift_out));currentPosition ++ ;mImageSwitcher.setImageResource(imgIds[currentPosition]);setImageBackground(currentPosition);}else{Toast.makeText(getApplication(), "到了最后一张", Toast.LENGTH_SHORT).show();}}}break;}return true;}}

http://blog.csdn.net/xiaanming/article/details/8997260 制作动画的网站

上面切换图片主要用到的就是动画了，用的是translate移动动画，不了解动画的同学到这里看看http://blog.csdn.net/xiaanming/article/details/8997260，我就不介绍了，接下来我吧动画代码贴出来，在res新建一个anim的目录，如下图

左边进入的动画，left_in.xml

[html] view plaincopy
<?xml version="1.0" encoding="UTF-8"?>  
<set xmlns:android="http://schemas.android.com/apk/res/android">  
    <translate   
        android:fromXDelta="-100%p"  
        android:toXDelta="0"  
        android:duration="500"/>  
</set>  

左边出去的动画,left_out.xml

[html] view plaincopy
<?xml version="1.0" encoding="UTF-8"?>  
<set xmlns:android="http://schemas.android.com/apk/res/android">  
    <translate   
        android:fromXDelta="0"  
        android:toXDelta="-100%p"  
        android:duration="500"/>  
</set>  

右边进入的动画，right_in.xml

[html] view plaincopy
<?xml version="1.0" encoding="UTF-8"?>  
<set xmlns:android="http://schemas.android.com/apk/res/android">  
    <translate   
        android:fromXDelta="100%p"  
        android:toXDelta="0"  
        android:duration="500"/>  
</set>  

右边出去的动画,right_out.xml

[html] view plaincopy
<?xml version="1.0" encoding="UTF-8"?>  
<set xmlns:android="http://schemas.android.com/apk/res/android">  
    <translate   
        android:fromXDelta="0"  
        android:toXDelta="100%p"  
        android:duration="500"/>  
</set>  

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