android - Apply many color filters to the same drawable -


i want apply several color filters in chain drawable. possible? or maybe create filter combination of filters want apply.

for example, like:

drawable d = ...; d.setcolorfilter(0x3f000000, mode.overlay).setcolorfilter(0xff2d2d2d, mode.screen) 

this approach ended using: manipulate drawable bitmap on canvas , apply many layers need, using paint, works not color filters, kind of image blending.

... drawable mybackground = createbackground(getresources().getcolor(r.color.green));  setbackgrounddrawable(mybackground); ...  private drawable createbackground(int color) {      canvas canvas = new canvas();     bitmap buttonimage = bitmapfactory.decoderesource(getresources(), r.drawable.btn_image);     bitmap buttonshadows = bitmapfactory.decoderesource(getresources(), r.drawable.btn_shadows);     bitmap buttonhighlights = bitmapfactory.decoderesource(getresources(), r.drawable.btn_highlights);     bitmap result = bitmap.createbitmap(buttonimage.getwidth(), buttonimage.getheight(), bitmap.config.argb_8888);      canvas.setbitmap(result);     paint paint = new paint();     paint.setfilterbitmap(false);      // color     paint.setcolorfilter(new porterduffcolorfilter(color, mode.multiply));     canvas.drawbitmap(buttonimage, 0, 0, paint);     paint.setcolorfilter(null);     // shadows     paint.setxfermode(new porterduffxfermode(mode.multiply));     canvas.drawbitmap(buttonshadows, 0, 0, paint);     // highlights     paint.setxfermode(new porterduffxfermode(mode.screen));     canvas.drawbitmap(buttonhighlights, 0, 0, paint);      paint.setxfermode(null);     return new bitmapdrawable(getresources(), result); } 

caveat: setbackgrounddrawable(drawable d) deprecated, while setbackground(drawable d) available api 16 on, if have me min target api-14 max target api-17 have no "clean" way set drawable background. sticked deprecated call.


Comments

  1. I am Android-Java Programmer.
    I am searching "How to use canvas.setBitmap(Bitmap bitmap)".
    And Find "How to use Drawable" at this site.
    Thanx !!

    ReplyDelete

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