how use call here check if animation completed or stopped giving me animationstoped listner null.
i want set buttons in main class when animation stopped giving me nullpointer. having hard time understand call
public interface animationstopchecklistner { void callback(boolean result); } public class animationscontainer implements animationstopchecklistner { public int fps = 30; // animation fps // single instance procedures private static animationscontainer minstance; boolean endanim = false; private animationscontainer() { } public static animationscontainer getinstance() { if (minstance == null) minstance = new animationscontainer(); return minstance; } public final int[] image_resources = {r.drawable.menu_000, r.drawable.menu_0001, r.drawable.menu_0002, r.drawable.menu_0003, r.drawable.menu_0004, r.drawable.menu_0005, r.drawable.menu_0006, r.drawable.menu_0007, r.drawable.menu_0008, r.drawable.menu_0009, r.drawable.menu_00010 }; /** * @param imageview * @return splash screen animation */ public framessequenceanimation createsplashanim(imageview imageview) { return new framessequenceanimation(imageview, image_resources, fps); } @override public void callback(boolean result) { } /** * animationplayer. plays animation frames sequence in loop */ public class framessequenceanimation { private int[] mframes; // animation frames private int mindex; // current frame private boolean mshouldrun; // true if animation should continue running. used stop animation private boolean misrunning; // true if animation running. prevents starting animation twice private softreference<imageview> msoftreferenceimageview; // used prevent holding imageview when should dead. private handler mhandler; private int mdelaymillis; private bitmap mbitmap = null; context mcontext; private bitmapfactory.options mbitmapoptions; animationstopchecklistner animationstopchecklistner; public void setonanimationframessequenceanimation(animationstopchecklistner listener) { this.animationstopchecklistner = listener; log.e("setinterface", "setting"); } public framessequenceanimation(imageview imageview, int[] frames, int fps) { mhandler = new handler(); mframes = frames; mindex = -1; msoftreferenceimageview = new softreference<>(imageview); mshouldrun = false; misrunning = false; mdelaymillis = 100 / fps; imageview.setimageresource(mframes[0]); // use in place bitmap save gc work (when animation images same size & type) if (build.version.sdk_int >= 11) { bitmap bmp = ((bitmapdrawable) imageview.getdrawable()).getbitmap(); int width = bmp.getwidth(); int height = bmp.getheight(); bitmap.config config = bmp.getconfig(); mbitmap = bitmap.createbitmap(width, height, config); mbitmapoptions = new bitmapfactory.options(); // setup bitmap reuse options. mbitmapoptions.inbitmap = mbitmap; mbitmapoptions.inmutable = true; mbitmapoptions.insamplesize = 1; } } private int getnext() { mindex++; if (mindex >= mframes.length) mindex = 0; log.e("total frames", string.valueof(mindex)); if (mindex == 58) { animationscontainer.minstance.endanim = true; stop(); setonanimationframessequenceanimation(animationstopchecklistner); if (animationstopchecklistner != null) { // null animationstopchecklistner.callback(true); } } return mframes[mindex]; } /** * starts animation */ public synchronized void start() { mshouldrun = true; if (misrunning) return; runnable runnable = new runnable() { @override public void run() { imageview imageview = msoftreferenceimageview.get(); if (!mshouldrun || imageview == null) { misrunning = false; /* if (monanimationstoppedlistener != null) { monanimationstoppedlistener.onanimationstopped(); }*/ return; } misrunning = true; mhandler.postdelayed(this, mdelaymillis); if (imageview.isshown()) { int imageres = getnext(); if (mbitmap != null) { // build.version.sdk_int >= 11 bitmap bitmap = null; try { bitmap = bitmapfactory.decoderesource(imageview.getresources(), imageres, mbitmapoptions); } catch (exception e) { e.printstacktrace(); } if (bitmap != null) { imageview.setimagebitmap(bitmap); } else { imageview.setimageresource(imageres); mbitmap.recycle(); mbitmap = null; } } else { imageview.setimageresource(imageres); } } } }; mhandler.post(runnable); } /** * stops animation */ public synchronized void stop() { mshouldrun = false; } } }
listner null because may not setting mainactivity
try this.
mainactivty extends appcompatactivity implements animationstopchecklistner write in oncreate function
animationscontainer.getinstance.setonanimationframesequenceanimation(this); and then
public void callback(boolean result){ // stuff } 
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