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android GridView组件多列加载图片时错位问题

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android GridView组件多列加载图片时错位问题

慕村443891 2019-04-11 17:35:13

当 GridView  为1列时没有任何问题当设置多列就出现图片错位重复问题

public class MainActivity extends AppCompatActivity {
    private GridView G1;
    private LruCache<String,Bitmap>   Lru;
    String[] img ={
    "http://pic1.win4000.com/pic/6/02/f5ae6d2ae4_250_350.jpg",
    "http://pic1.win4000.com/pic/1/29/381f2a6941_250_350.jpg",
    "http://pic1.win4000.com/pic/d/dc/95bb6142d5_250_350.jpg",
    "http://pic1.win4000.com/pic/7/54/b3b4112b34_250_350.jpg",
    "http://pic1.win4000.com/pic/d/87/642d5de424_250_350.jpg",
    "http://pic1.win4000.com/pic/c/8c/4d004a28f5_250_350.jpg",
    "http://pic1.win4000.com/pic/4/f8/9f2e1e129c_250_350.jpg",
    "http://pic1.win4000.com/pic/8/40/b90bd3f95f_250_350.jpg",
    "http://pic1.win4000.com/pic/d/99/e7b336f4e7_250_350.jpg",
    "http://pic1.win4000.com/pic/1/44/8b046cb009_250_350.jpg",
    "http://pic1.win4000.com/pic/2/19/38ac8d7ad0_250_350.jpg",
    "http://pic1.win4000.com/pic/2/87/73d1cbf175_250_350.jpg",
    "http://pic1.win4000.com/pic/7/c5/cd8f5c8d1b_250_350.jpg",
    "http://pic1.win4000.com/pic/0/6c/38c8f4e423_250_350.jpg",
    "http://pic1.win4000.com/pic/5/c1/7bb3ec563d_250_350.jpg",
    "http://pic1.win4000.com/pic/2/f5/abc84bceac_250_350.jpg"
};
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        G1 = findViewById(R.id.Gridv);

        int max = (int) Runtime.getRuntime().maxMemory() / 1024;
        int siz = max / 5;

        Lru = new LruCache<String, Bitmap>(siz){
            @Override
            protected int sizeOf(String key, Bitmap value) {
                return super.sizeOf(key, value) / 1024;
            }
        };

        G1.setAdapter(new ShiPei());

    }
    //适配器
    class ShiPei extends BaseAdapter{
        Img im;

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

        @Override
        public Object getItem(int position) {
            return null;
        }

        @Override
        public long getItemId(int position) {
            return 0;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            if(convertView == null){
                convertView = LayoutInflater.from(MainActivity.this).inflate(R.layout.imgtu,null);
                im =new Img();
                im.Iv = convertView.findViewById(R.id.imageView);
                convertView.setTag(im);
            }else {
                im = (Img) convertView.getTag();
            }

            new YiBu(img[position]).execute(img[position]);

            return convertView;
        }
        class Img{
            ImageView Iv;
        }

        class YiBu extends AsyncTask<String,Void, Bitmap>{
            String url;
            public YiBu(String x){
                url = x;
            }
            @Override
            protected Bitmap doInBackground(String... strings) {
                Bitmap bitmap;
                String u1 = strings[0];
                bitmap = Lru.get(u1);
                if(bitmap == null){
                    bitmap = getBitmap(u1);
                    Lru.put(u1,bitmap);
                }
                return bitmap;
            }

            @Override
            protected void onPostExecute(Bitmap bitmap) {
                super.onPostExecute(bitmap);
                im.Iv.setImageBitmap(bitmap);
            }

            public Bitmap getBitmap(String s){
                Bitmap b = null;
                OkHttpClient client = new OkHttpClient();
                Request R = new Request.Builder().url(s).build();
                try {
                    Response response = client.newCall(R).execute();
                    byte[]  byt =  response.body().bytes();
                    b = BitmapFactory.decodeByteArray(byt,0,byt.length);

                } catch (IOException e) {
                    e.printStackTrace();
                }
                return b;
            }
        }
    }

来个大佬看下 网上搜半天什么设置tag验证得方式 也尝试过 一样没用

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1 回答

?
慕村443891

已解决 //////小白问题。。。。。。。。。。。

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反对 回复 2019-04-12

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