无法在库中唯一加载图像

Question

我在public class FancyCoverFlowSampleAdapter extends FancyCoverFlowAdapter { // ============================================================================= // Private members // ============================================================================= private int[] images = {R.drawable.promtion_hover, R.drawable.hot_item_hover, R.drawable.siore_location_hover}; // ============================================================================= // Supertype overrides // ============================================================================= @Override public int getCount() { return Integer.MAX_VALUE; } @Override public Integer getItem(int i) { return images[i]; } @Override public long getItemId(int i) { return i; } int pos = 0; @Override public View getCoverFlowItem(final int i, View reuseableView, ViewGroup viewGroup) { ImageView imageView = null; Log.e("i=",""+i); Log.e("i=",""+i); if (reuseableView != null) { imageView = (ImageView) reuseableView; } else { imageView = new ImageView(viewGroup.getContext()); imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE); imageView.setLayoutParams(new FancyCoverFlow.LayoutParams(350, 650)); } /* if (pos >= images.length -1) pos = 0; else ++pos;*/ imageView.setImageResource(/*images[pos]*/this.getItem(pos)); return imageView; } } 数组中有3张图片。 我的下面的代码随机显示图像，而我希望它们是唯一的，并能够连续滚动。 我的适配器代码是。

public class MainActivity  extends Activity {
    private FancyCoverFlow fancyCoverFlow;


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        this.fancyCoverFlow = (FancyCoverFlow) this.findViewById(R.id.fancyCoverFlow);

        this.fancyCoverFlow.setAdapter(new FancyCoverFlowSampleAdapter());
        this.fancyCoverFlow.setUnselectedAlpha(1.0f);
        this.fancyCoverFlow.setUnselectedSaturation(0.0f);
        this.fancyCoverFlow.setUnselectedScale(0.5f);
        this.fancyCoverFlow.setSpacing(-56);
        this.fancyCoverFlow.setMaxRotation(0);
        this.fancyCoverFlow.setScaleDownGravity(0.2f);
        this.fancyCoverFlow.setActionDistance(FancyCoverFlow.ACTION_DISTANCE_AUTO);
        this.fancyCoverFlow.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
              //  Toast.makeText(getApplication(),"Position="+position,Toast.LENGTH_LONG).show();
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {

            }
        });

    }

我的主要活动代码是

purchaseList.filter { (element) -> Bool in
    return (element["purchaseCategory"] as? [String])?.contains("olive") ?? false
}

Answer 1

尝试在代码上更正/替换以下代码的和平：

 @Override
 public int getCount() {
   return images.length;
 }

@Override
public View getCoverFlowItem(final int i, View reuseableView, ViewGroup viewGroup) {
    ImageView imageView = null;

    if (reuseableView != null) {
        imageView = (ImageView) reuseableView;
    } else {
        imageView = new ImageView(viewGroup.getContext());
        imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
        imageView.setLayoutParams(new FancyCoverFlow.LayoutParams(350, 650));
    }

    imageView.setImageResource(this.getItem(i));

    return imageView;
}