android GridView載入圖片，一張張顯示

標籤：android   gridview   圖片   

簡單說下，擷取SDcard裡的圖片或者視屏縮圖就不說了，網上很多，主要寫下載入圖片的方式，在Grideview的Adapter中getView（）方法中定義：

//非同步載入圖片，實現一張張顯示

new LoadImageAsyctask(gridViewHold.icon).execute(paths[position]);

class LoadImageAsyctask extends AsyncTask<String, Void, Bitmap>{

ImageView view;

public LoadImageAsyctask(ImageView view) {

super();

this.view = view;

}

@Override

protected Bitmap doInBackground(String... params) {

// TODO Auto-generated method stub

Bitmap videoIcon = ThumbnailUtils.createVideoThumbnail(

params[0], Video.Thumbnails.MINI_KIND);

return videoIcon;

}

@Override

protectedvoid onPreExecute() {

// TODO Auto-generated method stub

super.onPreExecute();

}

@Override

protectedvoid onPostExecute(Bitmap result) {

// TODO Auto-generated method stub

this.view.setImageBitmap(result);

super.onPostExecute(result);

}

}