Has anyone else encountered this problem? On Thu, Jul 21, 2011 at 7:54 PM, Simon Platten <[email protected] > wrote:
> I have a listview with each item defined as: > > <?xml version="1.0" encoding="utf-8"?> > <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"; > android:layout_width="fill_parent" > > android:layout_height="?android:attr/listPreferredItemHeight" > android:padding="10dp"> > <LinearLayout android:id="@+id/llHeader" > android:background="@color/blue" > android:orientation="vertical" > android:layout_alignParentTop="true" > android:layout_width="fill_parent" > android:layout_height="fill_parent" > > <CheckBox android:id="@+id/chkUse" > android:text="File-name" > android:textColor="@color/yellow" > android:textStyle="bold" > android:layout_width="fill_parent" > android:layout_height="wrap_content" > android:layout_gravity="left" /> > </LinearLayout> > <ImageView android:id="@+id/ivthumbNail" > android:src="@drawable/placeholder" > android:layout_centerHorizontal="true" > android:layout_below="@+id/llHeader" > android:layout_width="fill_parent" > android:layout_height="fill_parent" /> > <ImageButton android:id="@+id/btnCCW" > android:src="@drawable/ccw_rotate_btn" > android:layout_alignLeft="@+id/llHeader" > android:layout_below="@+id/llHeader" > android:layout_width="48dip" > android:layout_height="48dip" /> > <ImageButton android:id="@+id/btnCW" > android:src="@drawable/cw_rotate_btn" > android:layout_alignRight="@+id/llHeader" > android:layout_below="@+id/llHeader" > android:layout_width="48dip" > android:layout_height="48dip" /> > </RelativeLayout> > > > This gives a title / checkbox, under this is an imageview with a button > either side of it. With the buttons I can rotate the image clockwise or > counter clockwise by 90 degrees, the routine that performs the rotation and > scaling of the images: > > public Bitmap scaleAndRotateImage(boolean blnShow) { > try{ > BitmapFactory.Options bfo = new BitmapFactory.Options(); > bfo.inSampleSize = 4; > Bitmap bmpData = BitmapFactory.decodeFile(m_strFilename, > bfo); > > if ( m_intOriginalWidth == 0 && m_intOriginalHeight == 0 ) { > m_intOriginalWidth = bmpData.getWidth(); > m_intOriginalHeight = bmpData.getHeight(); > int intScaledWidth = clsWallpaper.m_intScrWidth; > float fltAspectRatio = (float)bmpData.getHeight() / > (float)bmpData.getWidth(); > int intScaledHeight = (int)((float)intScaledWidth * > fltAspectRatio); > m_fltScaleWidth = ((float)intScaledWidth) / > ((float)m_intOriginalWidth); > m_fltScaleHeight = ((float)intScaledHeight) / > ((float)m_intOriginalHeight); > } > // Apply the scale to the matrix > Matrix mtx = new Matrix(); > mtx.postScale(m_fltScaleWidth, m_fltScaleHeight); > // Apply the rotation angle to the matrix > mtx.postRotate(m_intTotalAngle); > // Get the scaled and maybe rotated version of the bitmap > Bitmap bmpScaled = Bitmap.createBitmap(bmpData, > 0, 0, > m_intOriginalWidth, > m_intOriginalHeight, > mtx, true); > if ( blnShow == true && bmpScaled != null ) { > m_drwThumbnail = new BitmapDrawable(bmpScaled); > Activity a = (Activity)m_ivThumbnail.getContext(); > a.runOnUiThread(updateThumbnail); > } > return bmpScaled; > } catch( Exception ex ) { > Log.e( TAG, "rotateThumbnail", ex ); > } > return null; > } > > The strange this is when the image is rotated the scaled version is smaller > than it is supposed to be, if I scroll the listview so the item goes out of > view then scroll it back into view the item comes back with the image of the > correct size. Is they're anything I can do about this? > -- > Regards, > Sy > > -- Regards, Sy -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
