追踪源码抄袭android的xml转drawable代码实现recyclerview分割线-用代码是些shape selector 等等方案都在这里啦。...

追踪源码找到了这句话,所以也可以理解为什么网上要那样写了.这其实官方就是这样写的。
那么我接下来就要手写一个recyclerview的shape分割线

public static Drawable createFromXmlInner(Resources r, XmlPullParser parser, AttributeSet attrs,Theme theme) throws XmlPullParserException, IOException {final Drawable drawable;final String name = parser.getName();switch (name) {case "selector":drawable = new StateListDrawable();break;case "animated-selector":drawable = new AnimatedStateListDrawable();break;case "level-list":drawable = new LevelListDrawable();break;case "layer-list":drawable = new LayerDrawable();break;case "transition":drawable = new TransitionDrawable();break;case "ripple":drawable = new RippleDrawable();break;case "color":drawable = new ColorDrawable();break;case "shape":drawable = new GradientDrawable();break;case "vector":drawable = new VectorDrawable();break;case "animated-vector":drawable = new AnimatedVectorDrawable();break;case "scale":drawable = new ScaleDrawable();break;case "clip":drawable = new ClipDrawable();break;case "rotate":drawable = new RotateDrawable();break;case "animated-rotate":drawable = new AnimatedRotateDrawable();break;case "animation-list":drawable = new AnimationDrawable();break;case "inset":drawable = new InsetDrawable();break;case "bitmap":drawable = new BitmapDrawable(r);if (r != null) {((BitmapDrawable) drawable).setTargetDensity(r.getDisplayMetrics());}break;case "nine-patch":drawable = new NinePatchDrawable();if (r != null) {((NinePatchDrawable) drawable).setTargetDensity(r.getDisplayMetrics());}break;default:throw new XmlPullParserException(parser.getPositionDescription() +": invalid drawable tag " + name);}drawable.inflate(r, parser, attrs, theme);return drawable;}

实现shape

*///在这里我们传入作为Divider的Drawable对象mDrawable = new GradientDrawable();RectShape rectShape = new RectShape();mDrawable.setGradientType(GradientDrawable.RECTANGLE);int size = DensityUtil.dip2px(context, 0.5f);mDrawable.setSize(size,size);mDrawable.setColor(Color.parseColor(colorHex));

实现selector

public static StateListDrawable genereateSelectorDrawable(Context context, int idNormal, int idPressed, int idFocused, int idUnable) {StateListDrawable bg = new StateListDrawable();Drawable normal = idNormal == -1 ? null : context.getResources().getDrawable(idNormal);Drawable pressed = idPressed == -1 ? null : context.getResources().getDrawable(idPressed);Drawable focused = idFocused == -1 ? null : context.getResources().getDrawable(idFocused);Drawable unable = idUnable == -1 ? null : context.getResources().getDrawable(idUnable);// View.PRESSED_ENABLED_STATE_SETbg.addState(new int[]{android.R.attr.state_pressed, android.R.attr.state_enabled}, pressed);// View.ENABLED_FOCUSED_STATE_SETbg.addState(new int[]{android.R.attr.state_enabled, android.R.attr.state_focused}, focused);// View.ENABLED_STATE_SETbg.addState(new int[]{android.R.attr.state_enabled}, normal);// View.FOCUSED_STATE_SETbg.addState(new int[]{android.R.attr.state_focused}, focused);// View.WINDOW_FOCUSED_STATE_SETbg.addState(new int[]{android.R.attr.state_window_focused}, unable);// View.EMPTY_STATE_SETbg.addState(new int[]{}, normal);return bg;}

接下来如何创建可以自行百度。