Android|Android 上千张图片的列表滑动加载 Android上千张图片的列表滑动加

【Android|Android 上千张图片的列表滑动加载】一般项目中图片加载用的比较多的是ImageLoader 但是需求自己配置一些参数上手有些复杂
对于手机图库中有上千张图片需要加载时一个使用性能很好的库Glide可以解决效果图如下
滑动非常流畅加载速度也很快而且使用也非常简单个人感觉比手机自带的图库效果更佳
上图上代码

Code

public class MainActivity extends Activity {ArrayList fileNames = new ArrayList(); //本地图片路径@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initData(); GridView listView = (GridView) findViewById(R.id.gridview); //ImageAdapter imageAdapter = new ImageAdapter(getApplicationContext(),Images.imageUrls); ImageAdapter imageAdapter = new ImageAdapter(getApplicationContext(), fileNames); listView.setAdapter(imageAdapter); }private void initData() {fileNames.clear(); Cursor cursor = getContentResolver().query(Media.EXTERNAL_CONTENT_URI, null, null, null, null); while (cursor.moveToNext()) { byte[] data = https://www.it610.com/article/cursor.getBlob(cursor.getColumnIndex(Media.DATA)); //图片的保存位置的数据 fileNames.add(new String(data, 0, data.length - 1)); } }}

activity_main

ImageAdapter

public class ImageAdapter extends BaseAdapter {private Context context; private String[] imageUrls; ArrayList fileNames; private LinearLayout.LayoutParams mImageViewLayoutParams; /* * public ImageAdapter(Context context, String[] imageUrls) { super(); * this.context = context; this.imageUrls = imageUrls; } */public ImageAdapter(Context context, ArrayList fileNames) { super(); this.context = context; this.fileNames = fileNames; DisplayMetrics dm = context.getResources().getDisplayMetrics(); int wh = dm.widthPixels; int w = (wh - context.getResources().getDimensionPixelSize(R.dimen.test) * 2) / 3; mImageViewLayoutParams = new LinearLayout.LayoutParams(w, w); }@Override public int getCount() { return fileNames.size(); }@Override public Object getItem(int position) { return null; }@Override public long getItemId(int position) { return position; }@Override public View getView(int position, View convertView, ViewGroup parent) {View view; if (convertView == null) { view = LayoutInflater.from(context).inflate(R.layout.item, null); } else { view = convertView; } ImageView image = (ImageView) view.findViewById(R.id.image); image.setLayoutParams(mImageViewLayoutParams); Glide.with(context).load(fileNames.get(position)).centerCrop().placeholder(R.color.test).crossFade() .into(image); return view; } }

item

Demo见github
https://github.com/huanyi0723/ImageList
转载于:https://www.cnblogs.com/huanyi0723/p/4816393.html