android - How to put an image in an ImageView from the Activity not the XML file? -

what trying put multiple images without out of memory problem i'm using method putimage() , trying put image in imageview activity not xml file

here xml code

<?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:fitssystemwindows="true"       android:alwaysdrawnwithcache="false">  <imageview     android:id="@+id/imageview1"     android:layout_width="fill_parent"     android:layout_height="fill_parent"     android:layout_alignparenttop="true"     />  </relativelayout> 

and here activity

public class recipebanana extends activity { imageview v; button button; context localcontext = null;      public static drawable getassetimage(context context, string filename) throws ioexception { assetmanager assets = context.getresources().getassets(); inputstream buffer = new bufferedinputstream((assets.open("drawable/" + filename + ".jpg"))); bitmap bitmap = bitmapfactory.decodestream(buffer); return new bitmapdrawable(bitmap); }   public void putimage(imageview v, string x){      try {         v.setimagedrawable(drawable.createfromstream(localcontext.getassets().open("flags/" + x + ".jpg"), null));     } catch (ioexception e) {         // todo auto-generated catch block         e.printstacktrace();     }   }       @override      protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_recipe_banana);          imageview v=(imageview) findviewbyid(r.id.imageview1);         putimage(v,"bananarecipe");         addlisteneronbutton();      } 

you aren't ever calling getassetimage() don't need method, remove it. don't need create variable hold reference context. activity is a context allowed call getassets() directly without needing put in front of it.

try this:

public class recipebanana extends activity {     imageview v;     button button;       @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_recipe_banana);         imageview v=(imageview) findviewbyid(r.id.imageview1);         putimage(v,"bananarecipe");         addlisteneronbutton();     }     public void putimage(imageview v, string filename){         try {             v.setimagedrawable(drawable.createfromstream(getassets().open("flags/" + filename + ".jpg"), null));         } catch (ioexception e) {             // todo auto-generated catch block             e.printstacktrace();         }     } } 

using code if have file called bananarecipe.jpg inside of assets/flags/ should load imageview.