PageAdapter——PageView的適配器
適配器這個(gè)東東想必大家都不莫生轩褐，在ListView中也有適配器，listView通過重寫GetView（）函數(shù)來獲取當(dāng)前要加載的Item。而PageAdapter不太相同艾帐，畢竟PageAdapter是單個(gè)VIew的合集。
PageAdapter 必須重寫的四個(gè)函數(shù)：
- boolean isViewFromObject(View arg0, Object arg1)
- int getCount()
- void destroyItem(ViewGroup container, int position,Object object)
- Object instantiateItem(ViewGroup container, int position)
關(guān)于四個(gè)函數(shù)的理解
1、getCount():返回要滑動(dòng)的VIew的個(gè)數(shù)
@Override
public int getCount() {
// TODO Auto-generated method stub
return viewList.size();
}
2塔鳍、destroyItem（）：從當(dāng)前container中刪除指定位置（position）的View;
@Override
public Object instantiateItem(ViewGroup container, int position) {
// TODO Auto-generated method stub
container.addView(viewList.get(position));
return viewList.get(position);
}
};
3、instantiateItem()：做了兩件事呻此，第一：將當(dāng)前視圖添加到container中献幔，第二：返回當(dāng)前View
@Override
public Object instantiateItem(ViewGroup container, int position) {
// TODO Auto-generated method stub
container.addView(viewList.get(position));
return viewList.get(position);
}
};
4、isViewFromObject():
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
// TODO Auto-generated method stub
return arg0 == arg1;
}
參考了http://blog.csdn.net/harvic880925/article/details/38453725 這位作者的博客趾诗，自己重新做了一些蜡感，感謝！
