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appbarlayout-spring-behavior

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.

Download Sample

Screenshot

First is with spring. Second with blur and TabScrimHelper.

HH

Installation

dependencies {
    implementation 'com.github.todou:appbarspring:1.0.x'
}
desversionbranch
supportpre1.0.7master
support281.0.9support28
androidx1.0.8androidx

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);

License

<pre> Copyright 2016 ToDou Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. </pre>