替换已弃用的图库的选项

Question

替换已弃用的图库的选项

Tod*_*ies 21 android deprecated android-viewpager

我目前正在使用Gallery小部件来显示缩略图的滑动列表.每个缩略图都有背景颜色和文本覆盖.(这是一个颜色选择器).

但是,从API版本16开始,该库已被弃用..据我了解,API版本大于16的手机不保证有图库小部件.

我会使用一个viewpager,但是它一次只显示一个视图,我也想显示相邻的视图.水平滚动视图可以执行此操作,但它不会像图库那样捕捉到最近的选项.

我找了现有的小部件,找不到任何东西.您对我应该选择哪个小部件有什么建议吗？

Answer 1

use*_*757 15

替换Gallery的一个很好的选择是ViewPager,作为listview或gridview,你必须制作自己的适配器,扩展PagerAdater和布局项.我已经使用下面附带的代码使用它,它完美无缺.良好的触摸响应,我希望这可以帮助你!

布局

<android.support.v4.view.ViewPager
    android:id="@+id/gallery_item"
    android:layout_width="fill_parent"
    android:layout_height="709dp"
    android:layout_below="@+id/relative_headerBar"
    >

</android.support.v4.view.ViewPager>

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班级代码

private ViewPager gallery;
gallery = (ViewPager) findViewById(R.id.gallery_item);

gallery = (ViewPager) findViewById(R.id.gallery_item);
    lista_galeria = new ArrayList<ObjectVerGaleria>();

    int i=0;
    for(i=0;i<listImages.length;i++)
    {       
        ObjectVerGaleria objV = new ObjectVerGaleria();
        objV.setUrlImg(listImages[i]);  
        lista_galeria.add(objV);
    }
    gallery.setAdapter(new AdapterVerGaleria(ctx, lista_galeria));

    gallery.setOnPageChangeListener(new OnPageChangeListener()
    {

        public void onPageSelected(int pos)
        {
            String pathImage = listImages[pos].toString();

            currentPosFront = pos;
            Log.d("setOnItemSelectedListener>>","path:"+pathImage);

        }

        public void onPageScrolled(int arg0, float arg1, int arg2)
        {
            // TODO Auto-generated method stub

        }

        public void onPageScrollStateChanged(int arg0)
        {
            // TODO Auto-generated method stub

        }
    });

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适配器

public class AdapterVerGaleria extends PagerAdapter {

private Activity ctx;
private ArrayList<ObjectVerGaleria> dataList;

public AdapterVerGaleria(Activity act, ArrayList<ObjectVerGaleria> lista) {

    ctx = act;
    dataList = lista;
}

public int getCount() {
    return dataList.size();
}

public Object getItem(int pos) {
    return pos;
}

@Override
public Object instantiateItem(View collection, int pos)
{
    ImageView foto = new ImageView(ctx);



        //foto.setLayoutParams(new ViewPager.LayoutParams(Gallery.LayoutParams.FILL_PARENT, Gallery.LayoutParams.FILL_PARENT));
        foto.setScaleType(ImageView.ScaleType.FIT_XY);
        Utils.fetchDrawableOnThread(Utils.getPath(ctx)+"/"+dataList.get(pos).getUrlImg(), foto, true);
        ((ViewPager)collection).addView(foto);


    return foto;
}

@Override
public void destroyItem(View collection, int position, Object view)
{
    ((ViewPager)collection).removeView((ImageView)view);

}

public long getItemId(int pos) {
    return pos;
}



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

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}