Android GridView display image of SD card

XML Layout of the GridView :

main.xml:

<gridviewxmlns:android="http://schemas.android.com/apk/res/android"Android:id="@+id/gridview"Android:layout_width="fill_parent"Android:layout_height="fill_parent"Android:numcolumns="Auto_fit"android:verticalspacing="10DP"android:horizontalspacing="10DP"Android:columnwidth="90DP"Android:stretchmode="ColumnWidth"android:gravity="Center"  />

Imageitem.xml:

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android"Android:layout_height="wrap_content"Android:paddingbottom="4dip"Android:layout_width="fill_parent"> <TextView android:layout_width="wrap_content"Android:layout_height="wrap_content"Android:id="@+id/textid"/> <ImageView android:layout_height="wrap_content"Android:id="@+id/itemimage"Android:layout_width="wrap_content"Android:layout_centerhorizontal="true"> </ImageView> </RelativeLayout>

Activity:

Public class Fileimageactivity extends Activity {private static final String TAG="Fileimage"; Private Listlist;       Private Contentresolver CR; Private List<ImageView> imageviews =NULL; HashMap<String,Object>HashMap;       Public Bitmap Bitmap;     Public Bitmap newbit;  Public voidonCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);        Setcontentview (R.layout.main);     Findimagepath (); }      Public voidFindimagepath () Gridviewgridview=(GridView) Findviewbyid (R.id.gridview); List=newarraylist(); CR=Getcontentresolver (); String[]imagedata={thumbnails._id,thumbnails.image_id,thumbnails.data};//Find ImageCursorcursor=cr.query (Thumbnails.external_content_uri, ImageData,NULL,                     NULL,NULL);//using cursors to find an imageString[] from= {"image_id","Path" }; int[] to = {r.id.textid, r.id.itemimage};//in the layout of the Imageview.xmlgetcolumndata (cursor); Listadapteradapter=NewPicview ( This, List, R.layout.imageitem, from, to);    Gridview.setadapter (adapter); }//find the path to the image and put it in the list.   Private voidgetcolumndata (Cursor cur) {if(Cur.movetofirst ()) {int_id;           intimage_id;           Stringimage_path; Int_idcolumn=Cur.getcolumnindex (thumbnails._id); Intimage_idcolumn=Cur.getcolumnindex (thumbnails.image_id); Intdatacolumn=Cur.getcolumnindex (Thumbnails.data);           LOG.I (TAG, string.valueof (_idcolumn));  Do{                            //Get the field values_id=Cur.getint (_idcolumn); image_id=Cur.getint (Image_idcolumn); Image_path=cur.getstring (DataColumn); //Do something with the values. //log.i (TAG, _id + "image_id:" + image_id + "path:"//+ image_path + "---");hashmap<string,string> hash =NewHashmap<string, string>(); Hash.put ("image_id", image_id +""); Hash.put ("Path", Image_path);                     List.add (hash); }                       while(Cur.movetonext ()); }                    }          //many times the GridView is using Baseadapter to display pictures more, baseadapter of the picture resources from drawable resources. But its practical simpleadapter is already available,//the point is that there is setviewimage in Simpleadapter.         classPicview extends simpleadapter{public picview (context context, List<? Extends Map<string,?>>data, Intresource, string[] from,int[] to) {Super (Context,data, Resource, from, to); }              /** Called by BindView () to set theimage for a ImageView but only if there is no existing viewbinder or               I * f the existing Viewbinder Cannothandle binding to an ImageView.                * By default, the value would betreated as an image resource.               * If The value cannot be used Asan image resource, the value is used as an image Uri. * This method is called Insteadof setviewimage (ImageView, int.) * If the supplied data is not a int orint               Eger.  * @ Value The address of image is path * Parameters * v ImageView to receive an image value the Value retrieved from the data set*/Public void Setviewimage (ImageView V, String value) {Try{Fileinputstreamfis=NewFileInputStream (value); Bufferedinputstreambis=NewBufferedinputstream (FIS); Bitmap=Bitmapfactory.decodestream (bis); Newbit= Bitmap.createscaledbitmap (Bitmap, the, the,false);                            V.setimagebitmap (Newbit);                            Bis.close ();                     Fis.close (); }                       Catch(Exceptione) {LOG.E (tag,e.tostring ());                     V.setimageuri (Uri.parse (value)); }              }                   }      }

Android GridView display image of SD card