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ImageView iv = (ImageView)findViewById(R.drawable.icon);
Bitmap bm = BitmapFactory.decodeResource(getResources(), R.drawable.icon);
iv.setImageBitmap(bm);
<ImageView android:src="@drawable/icon"
android.layout_width="wrap_content"
android.layout_height="wrap_content">
</ImageView>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:width="100dip">
<Button android:id="@+id/Button01"
android:text="@string/click_me"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</Button>
<ImageView android.id="@+id/imageView"
android.layout_width="wrap_content"
android.layout_height="wrap_content">
</ImageView>
</LinearLayout>
<ImageView android.id="@+id/imageView"
android.layout_width="wrap_content"
android.layout_height="wrap_content">
</ImageView>