This project depends on another project called
PullToRefreshwritten by me.
- Add jitpack repository to your root build file
allprojects {
repositories {
...
maven { url "https://jitpack.io" }
}
}- Add the dependency
dependencies {
compile 'com.github.lubeast:AlphaLayout:1.0.0'
}- Add
AlphaLayoutwidget in your layout
<com.alhpalayout.AlphaLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/alpha_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:headerLayout="@layout/layout_header"
app:transparent_distance="150dp"
tools:context="com.alphalayout.activity.ListSampleActivity">
<ListView
android:id="@+id/list_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:divider="@null"
android:dividerHeight="0dp" />
</com.alhpalayout.AlphaLayout>- implements AlphaLayout.OnRefreshListener in your
Activity
@Override
public void onRefresh() {
alphaLayout.postDelayed(new Runnable() {
@Override
public void run() {
alphaLayout.setRefreshing(false);
}
}, REFRESH_DELAY);
}
@Override
public void onScroll(int direction, float percent) {
if (direction == AlphaLayout.DIRECTION_DOWN) {
ViewCompat.setAlpha(alphaLayout.getHeaderLayout(), 1.0f - percent);
} else {
alphaLayout.getHeaderLayout().getBackground().setAlpha((int) (255 * percent));
mTitleView.getBackground().mutate().setAlpha((int) (255 * (1 - percent)));
}
}- You should use
AlphaScrollViewwhich been provided instead ofScrollView. - I also provided
AlphaHeaderLayoutwhich can make good performance easily.
See sample project for detail
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