java - Android Viewpager 项目访问

Question

我的目标是能够在 3 种不同的布局中滑动，并能够点击每个布局上的项目。目前滑动效果很好，可以查看所有 3 种布局。

Activity :

    public class FetchMenu extends Fetch {

        protected ImageView block;  

        /** Called when the activity is first created. */
         @Override
            public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.main);

                //pagerviwer

                MyPagerAdapter adapter = new MyPagerAdapter();
                ViewPager myPager = (ViewPager) findViewById(R.id.myfivepanelpager);
                myPager.setAdapter(adapter);
                myPager.setCurrentItem(1); 

                //icon on layout 1

            fbicon = (ImageView)findViewById(R.id.facebookicon);            
            fbicon.setOnTouchListener(new OnTouchListener()
            {

                @Override
                public boolean onTouch(View v, MotionEvent event)
                {
                    Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.facebook.com/pages/Fetch-Training/174358202669554"));
                    startActivity(browserIntent);                   
                    // TODO Auto-generated method stub
                    return false;
                }
           });

页面适配器:

class MyPagerAdapter extends PagerAdapter {

    public int getCount() {
        return 3;
    }

    public Object instantiateItem(View collection, int position) {

        LayoutInflater inflater = (LayoutInflater) collection.getContext()
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        int resId = 0;
        switch (position) {
        case 0:
            resId = R.layout.training_topics;
            break;
        case 1:
            resId = R.layout.behaviour_topics;

            break;
        case 2:
            resId = R.layout.tricks_topics;
            break;
        }

        View v = inflater.inflate(resId, null);

        ((ViewPager) collection).addView(v, 0);

        return v;
    }

    @Override
    public void destroyItem(View arg0, int arg1, Object arg2) {
        ((ViewPager) arg0).removeView((View) arg2);

    }

    @Override
    public boolean isViewFromObject(View arg0, Object arg1) {
        return arg0 == ((View) arg1);

    }

    @Override
    public Parcelable saveState() {
        return null;
    }
}

问题: 每个被刷过的布局都包含一堆 ImageView，如果我在我的 Activity 中设置代码来监听这些 imageview 的触摸，我会收到强制关闭错误。我猜 Activity 中的代码不知道 ImageView 存储在哪个布局中？我读过有关 fragment 的内容，这是我需要的吗？

谢谢大家总是喜欢帮助

Answer 1

试试这个:

View v = inflater.inflate(resId, null);
ImageView img = v.findviewbyid(R.id.IMAGEID);
// do what you want with the image

将代码放入 switch case 并从那里返回以获得最佳结果

即:将以下代码移动到每个案例

    View v = inflater.inflate(resId, null);

    ((ViewPager) collection).addView(v, 0);

    return v;