appbarlayout-spring-behavior

最新推荐文章于 2024-03-26 09:59:49 发布

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本项目提供了一种行为帮助AppBarLayout实现弹簧滚动效果，并修复了滚动过程中的惯性滑动问题。此外，还提供了一个修复版的NestedScrollView来解决惯性滑动的bug。

appbarlayout-spring-behavior

项目地址： ToDou/appbarlayout-spring-behavior

简介：One Behavior help AppBarLayout to scroll spring and with fling fix app bar and fling fix nest scroll view

One library contains one behavior help appbarlayout to scroll spring. In the sample have add the realtimeblur test and add tablayout with TabScrimHelper(animate color with CollapsingToolbarLayout).Because of some methods in the Behavior of AppBarLayout not open to the out package. So I set the package name same to the support design.And add one fling_fix_behavior to fix the appbarlayout to scroll down fling. Also add one NestedFixFlingScrollView to fix NestedScrollView fling bug.

AppBarLayout Spring
AppBarLayout Fling fix
NestedScrollView Fling Fix

Download Sample

Screenshot

First is with spring. Second with blur and TabScrimHelper.Third with fling fix

Installation

dependencies {
    compile 'com.github.todou:appbarspring:1.0.3'
}

Usages

AppBarLayout-Spring

<android.support.design.widget.AppBarLayout
        ...
        app:layout_behavior="@string/appbar_spring_behavior"
        ...>
        ...
</android.support.design.widget.AppBarLayout>

if you want add blur with the spring.You can add this by the RealtimeBlurView:

final RealtimeBlurView realtimeBlurView = (RealtimeBlurView) findViewById(R.id.real_time_blur_view);
AppBarLayout appBarLayout = (AppBarLayout) findViewById(R.id.app_bar);
AppBarLayoutSpringBehavior springBehavior = (AppBarLayoutSpringBehavior) ((CoordinatorLayout.LayoutParams) appBarLayout.getLayoutParams()).getBehavior();
springBehavior.setSpringOffsetCallback(new AppBarLayoutSpringBehavior.SpringOffsetCallback() {
      @Override
      public void springCallback(int offset) {
           int radius = 20 * (240 - offset > 0 ? 240 - offset : 0) / 240;
           realtimeBlurView.setBlurRadius(radius);
      }
});

With the tablayout you can add TabScrimHelper to let TabLayout animate color with the CollapsingToolbarLayout:

TabScrimHelper tabScrimHelper = new TabScrimHelper(tabLayout, collapsingToolbarLayout);
appBarLayout.addOnOffsetChangedListener(tabScrimHelper);

AppBarLayout-Fling Fix

Maybe you will find the appbar fling when scroll down is not smooth. You can try this appbar fling fix behavior:

<android.support.design.widget.AppBarLayout
        ...
        app:layout_behavior="@string/appbar_fling_fix_behavior"
        ...>
        ...
</android.support.design.widget.AppBarLayout>