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README.md

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+ToolBarAlphaBehavior
+==================
+
+Android - ToolBarAlphaBehavior
+
+## Demo
+
+![ToolBarAlphaBehavior GIF](./blobs/demo.gif)
+
+
+## How to Use
+
+```groovy
+		int imageViewHeight=dip2px(360);
+        //toolBar变色回调
+        toolBarAlphaBehavior = new ToolBarAlphaBehavior(getBaseContext(),toolbar, "000000", new ToolBarAlphaBehavior.CallBack() {
+            @Override
+            public void callBack(int color) {
+                setStatuBarColor(color);
+            }
+        },imageViewHeight);
+
+        //初始化toolBar 颜色
+        toolBarAlphaBehavior.setAlPha(ToolBarAlphaBehavior.minAlpha);//toolbar透明度初始化
+
+        //监听 NestScrollView
+        mScrollView.setOnCustomScroolChangeListener(new CustomNestedScrollView.ScrollInterface() {
+            @Override
+            public void onSChanged(int l, int t, int oldl, int oldt) {
+                //渐变色.
+                if (toolBarAlphaBehavior != null)
+                    toolBarAlphaBehavior.onNestedScroll(t);
+            }
+        });
+```
+
+
+
+