Question

我正在使用GridView开发一个项目，如果用户点击这两个具有相同图像的项目，我需要隐藏项目，然后两个项目都应该隐藏。
第一次加载项目时，所有项目都会有一个问号图像。当用户点击项目时，背景图片会显示，如果他点击了另一个具有相同图片的项目，那么如果没有这两个项目应该隐藏，它会再次显示问号图像。
这怎么可能？
这是我的MainActivity.java

public class MainActivity extends Activity {
    Context ctx;
    int imagesArray[];
    GridViewContent adapter;
    List<Integer> pictures;
    boolean flage=false;
    int img1=-1,img2=-1;
    public int OriginalArray[] = { R.drawable.sample_0, R.drawable.sample_1,
            R.drawable.sample_2, R.drawable.sample_3,R.drawable.sample_0, R.drawable.sample_1,
            R.drawable.sample_2, R.drawable.sample_3 };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        shuffleArray();

        adapter= new GridViewContent(this);

        final GridView grid = (GridView) findViewById(R.id.gv_memory);
        grid.setAdapter(new GridViewContent(this));
    }
    private void shuffleArray() {
        // TODO Auto-generated method stub
        pictures= new ArrayList<Integer>();
        for (int index = 0; index < OriginalArray.length; index++)
        {
            pictures.add(OriginalArray[index]);
        }
        Collections.shuffle(pictures);

    }
    public class GridViewContent extends BaseAdapter {
        private Context context;

        //abstract change();

        public int pictureArray[]={
                R.drawable.question,
                R.drawable.question,
                R.drawable.question,
                R.drawable.question,
                R.drawable.question,
                R.drawable.question,
                R.drawable.question,
                R.drawable.question,        
        };
        public GridViewContent(Context c){
            context=c;

        }

        @Override
        public int getCount() {
            // TODO Auto-generated method stub
            return (pictureArray.length);
        }

        @Override
        public Object getItem(int position) {
            // TODO Auto-generated method stub
            return pictureArray[position];
        }

        @Override
        public long getItemId(int position) {
            // TODO Auto-generated method stub
            return 0;
        }

        @Override
        public View getView(final int position, View convertView, ViewGroup arg2) {
            // TODO Auto-generated method stub
            convertView=LayoutInflater.from(context).inflate(R.layout.main, null);
            final ImageView myimage=new ImageView(context);
            myimage.setImageResource(pictureArray[position]);
            //myimage.setImageResource(pictures.get(pictureArray[position]));
            myimage.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
            myimage.setLayoutParams(new GridView.LayoutParams(70, 70));
            myimage.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {
                //  int post1,post2;

                    myimage.setImageResource(pictures.get(position));

                if(flage==false)
                {

                img1=pictures.get(position);

                flage=true;

                }else if(flage==true){
                    //post2=position;
                img2=pictures.get(position);
                checkResult();
                //notifyDataSetChanged();
                flage=false;
                }
                //else if(f)
                }
            });

            return myimage;
        }

    }
    public void checkResult() {
        if(img1==img2)
        {
            //pictures.remove(post2);

            adapter.notifyDataSetChanged();

            Toast.makeText(MainActivity.this, "Congratualatin !!!!", Toast.LENGTH_LONG).show();
        }
        else{
            Toast.makeText(MainActivity.this, "Sorry!!!!", Toast.LENGTH_LONG).show();
            final GridView grid = (GridView) findViewById(R.id.gv_memory);
            grid.setAdapter(new GridViewContent(this));
        }

    }
}

Answer 1

您可以尝试记住单击的GridView项的索引。发生第二次单击时，请检查记住的索引。如果填充（意味着用户已经单击任意图像一次），从适配器中提取两个drawable并检查它们是否相等。如果是，请从适配器中删除它们并进行更新。不要忘记重置记住的索引。

在代码中，这看起来像这样：

int firstClickIndex = -1;

grid.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView <? > parent, View view, int position, long id) {
        if (-1 == firstClickIndex) {
            firstClickIndex = position;
        } else {
            final int fstDrawable = adapter.get(firstClickIndex);
            final int sndDrawable = adapter.get(position);

            if (fstDrawable == sndDrawable) {
                // Remove stuff, then reset firstClickIndex.
            } else {
                // Reset firstClickIndex.
            }

        }
    }
});

如果两个项目使用Android具有相同的图像，则隐藏GridView中的项目

1 个答案: