Question

我是android新手。我正在使用旋转木马，我想缩放选定的图像。这是我的carouseladapter类，我在getView（）方法中接收所选图像的位置。关于这一点的任何帮助对我理解这个概念非常有帮助。

public class  CarouselAdapter  extends BaseAdapter {

        private ArrayList<ImageView> mData = new ArrayList<ImageView>(0);
        private Context mContext;

        public CarouselAdapter(Context context) {
            mContext = context;
        }

        public void setData(ArrayList<ImageView> data) {
            mData = data;
        }

        @Override
        public int getCount() {
            return mData.size();
        }

        @Override
        public Object getItem(int pos) {
            return mData.get(pos);
        }

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

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ImageView mImage= mData.get(position); //new ImageView(mContext);
            Log.v("UITEST", "position: " + position);
    //      mImage.setImageResource(mData.size());
            //mImage.setScaleType(ScaleType.CENTER_CROP);
            //mImage.setPadding(5, 5, 5, 5);
            //mImage.setBackgroundResource(R.drawableble.slider_bg);
            return mImage;
        }


    }

Answer 1

你可以使用它来缩放图像onItemSelectedListner

View lastSelectedView=null;



this.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

            @Override
            public void onItemSelected(AdapterView<?> arg0, View arg1,
                    int arg2, long arg3) 
            {   
                if(lastSelectedView!=null)
                    lastSelectedView.setLayoutParams(new Gallery.LayoutParams(200, 200));
                arg1.setLayoutParams(new Gallery.LayoutParams(400, 250));

                lastSelectedView=arg1;


            }

如何缩放所选图像

1 个答案: