Android滑屏实例

一个简单的实现图片滑屏的方法：


XML(主要代码)：
<android.support.v4.view.ViewPager
        android:id="@+id/image_pager"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        
        android:layout_below="@id/category_layout">
        
    </android.support.v4.view.ViewPager>


Adapter(主要代码)：
import java.util.ArrayList;


import android.support.v4.view.PagerAdapter;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;


public class ImageViewPager extends PagerAdapter {
private ArrayList<View> mlist;



public ImageViewPager() {
super();
// TODO Auto-generated constructor stub
}


public ImageViewPager(ArrayList<View> mlist) {
super();
this.mlist = mlist;
}


@Override
public int getCount() {
// TODO Auto-generated method stub
return this.mlist==null?0:this.mlist.size();
}


@Override
public boolean isViewFromObject(View arg0, Object arg1) {
// TODO Auto-generated method stub
return arg0==arg1;
}


@Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView(this.mlist.get(position));
}


@Override
public Object instantiateItem(ViewGroup container, int position) {
LayoutParams params=new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT);
container.addView(this.mlist.get(position), params);
return this.mlist.get(position);
}



}
Activity(主要代码)：


public void initImagePager(){
ArrayList<View> imagePager=new ArrayList<View>();
for(int i=0;i<images.length;i++){
ImageView imageView=new ImageView(this);
imageView.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT));
imageView.setImageResource(images[i]);
imagePager.add(imageView);
}
ImageViewPager imageAdapter=new ImageViewPager(imagePager);
imageViewPager.setAdapter(imageAdapter);
}