negative viewer android

XmlXML version= "1.0"?>-LinearLayoutTools:context=". Mainactivity "Android:paddingtop= "@dimen/activity_vertical_margin"Android:paddingright= "@dimen/activity_horizontal_margin"Android:paddingleft= "@dimen/activity_horizontal_margin"Android:paddingbottom= "@dimen/activity_vertical_margin"android:orientation= "vertical"Android:layout_height= "Match_parent"Android:layout_width= "Match_parent"Xmlns:tools= "Http://schemas.android.com/tools"xmlns:android= "Http://schemas.android.com/apk/res/

This article illustrates an example of an Android based image viewer implementation that can be used to adjust transparency, as follows: main.xml Part of the code is as follows: The Java part of the code is: Package Android.demo; Import android.app.Activity; Import Android.graphics.Bitmap; Import Android.graphics.BitmapFactory; Import android.graphics.drawable.BitmapDrawable; Import A

This article describes the negative effects of image special effects processing. As before, pixels are processed, and algorithms are universal. Algorithm principle: the RGB values of the current pixel and the values after the difference of 255 are used as the RGB values of the current vertex. Example: ABC Evaluate the negative effect of point B: B. R = 255-B. R; B. G = 255-B. G; B. B = 255-B. B; : Source i

Recently, I am working on Image Processing on Android and directly operating on pixels on Android. Unexpectedly, some unexpected things have occurred. The getpixel method of Bitmap class obtains all negative pixel values. It should have been black, that is, 0, and all values have changed to-16777216, which is very strange. However, it is quite special to study th

); Canvas.drawargb (0,0,0,0); Paint.setcolor (Colorround); Canvas.drawroundrect (RECTF, ROUNDPX, ROUNDPX, paint); Paint.setxfermode (NewPorterduffxfermode (PorterDuff.Mode.SRC_IN)); Canvas.drawbitmap (BM, rect, rect, paint); Break; Case 5://oil painting intRadio =0; Random rnd =NewRandom ();intIModel =Ten;inti = Width-imodel; while(I >1) {intj = Height-imodel; while(J >1) {intIPos = Rnd.nextint (Ten)% IModel; color = Bm.getpixel

(context, attrs); Bitmap = Bitmapfactory.decoderesource (Context.getresources (), R.DRAWABLE.WW); width = Bitmap.getwidth (); Height = bitmap.getheight (); Oldpixels = new int[width*height]; Newpixels = new int[width*height]; Invalidate (); } @Override protected void OnDraw (canvas canvas) { Super.ondraw (canvas); //Get pixels Bitmap.getpixels (Oldpixels, 0, width, 0, 0, width, height); For (int i = 1;i color = Oldpixels[i]; //Get RGB co