android-gridview

问题 I have a GridView activity consisting of a single GridView that displays upto 100 image thumbnails from an sdcard location. I am creating another activity which is called when any one of the thumbnail in the grid is touched. This other activity should display the selected image in full-screen (can do this by passing the image uri to new activity). However, I would like to be able to swipe left/right from the full-screen view of the selected image to go to the next one instead of going back to

问题 Is there an existing Android widget third-party implementation that looks like a GridView but supports variable height items? I need one for images, but of course one that works with arbitrary views will work. Memory management is important, such that the Views and the bitmaps may be recycled. Or, a way to convert GridView source code to do this? An example of the grids: 1A 2A 3A 1A 2A 3B 1A 2B 3C The first column contains 1 item labeled as 1A (relative height 1), the second one contains two

问题 I'm trying to adapt the HelloGridView example so that I can show image thumbnails of images stored on the SD instead of images in the res/drawable. The idea is to create a list with the images first in the ImageView.initialize() function and the use it pretty much exactly as in the example. I'm having trouble with my cursor, first I tried to have it as private in the Imageview.initialize() function (it's only commented away so you can see where I had it) since to me it seems like it is only

问题 I'm trying to adapt the HelloGridView example so that I can show image thumbnails of images stored on the SD instead of images in the res/drawable. The idea is to create a list with the images first in the ImageView.initialize() function and the use it pretty much exactly as in the example. I'm having trouble with my cursor, first I tried to have it as private in the Imageview.initialize() function (it's only commented away so you can see where I had it) since to me it seems like it is only

问题 I am in the process of coding a drag and drop library for GridViews. I am almost complete...however, I am getting an annoying NullPointerException upon ACTION_DROP every now and then. It points to the ViewGroup source code, lines 1147 and 1153, saying it is getting a null pointer when trying to recycle the drag event. Some background on my process: I am basically embedding an OnDragListener into a custom adapter for a GridView. I have the user (programmer) implement an OnGetViewListener, when

问题 GridView contains Categories, and when I do tap on any of the GridView item (i.e - any Category) i would like to show items those belongs to that particular Category only in ViewPager. For example, I have two categories first - Electronics and second - Appliances , still whenever i do tap on Appliances category - it showing all the items (from Electronics 1 to Appliances 2 ) whereas it has to show only items those are under Appliances category ISSUE Still showing all the items in a ViewPager,

问题 I have to create UI using the Gridview. The image are dynamic since it is coming from the webservice . I can define column number using the xml but the item at the zeroth index has to have one full image and then the rest should be divided into columns . Any Help is appreciated. 回答1: You shoud use a TableLayout. GridView does not support spanning operations. A layout that arranges its children into rows and columns. A TableLayout consists of a number of TableRow objects, each defining a row

问题 I have to create UI using the Gridview. The image are dynamic since it is coming from the webservice . I can define column number using the xml but the item at the zeroth index has to have one full image and then the rest should be divided into columns . Any Help is appreciated. 回答1: You shoud use a TableLayout. GridView does not support spanning operations. A layout that arranges its children into rows and columns. A TableLayout consists of a number of TableRow objects, each defining a row

问题 I've a collection of array list objects like: ArrayList<Person> persons=new ArrayList<Person>(); so how can i bind this list of objects persons to android gridview ? 回答1: GridView settingGrid; ArrayList<Person> persons; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.setting); persons =new ArrayList<Person>(); settingGrid = (GridView)findViewById(R.id.settinggridview); settingGrid.setAdapter(new SettingImageAdapter(this));

问题 I am trying to load images in GridView from assets folder with following adapter however gridview scrolling in not smooth. Can someone suggest how can I improve my this code? And one more thing I am getting memory errors on some devices due to this. How can I optimize this program? public class GridViewAdapter extends BaseAdapter { Context mContext; public GridViewAdapter(Context mContext){ this.mContext = mContext; } @Override public View getView(int position, View convertView, ViewGroup