如何同步两个CoordinatorLayout + AppBarLayout的滚动 [英] How to sync scroll of two CoordinatorLayout + AppBarLayout
问题描述
我正在使用XML进行活动.
I have an activity with XML.
类似的东西
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
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/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<android.support.design.widget.CoordinatorLayout
android:id="@+id/coordinator"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="@+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@color/primary"
android:theme="@style/ToolbarStyle"
android:gravity="center_vertical"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
app:layout_scrollFlags="scroll|enterAlways|snap"
style="@style/bold" />
<android.support.design.widget.TabLayout
android:id="@+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/TabLayoutStyle"
android:animateLayoutChanges="true"
app:tabGravity="fill"
app:tabMode="fixed"
app:tabTextAppearance="@style/TabStyle"/>
</android.support.design.widget.AppBarLayout>
<com.wedmegood.planner.view.XViewPager
android:id="@+id/main_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="fill_vertical"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
...
</android.support.v4.widget.DrawerLayout>
ViewPager
的Fragment
具有CoordinatorLayout
和AppBarLayout
+ CollapsingToolbarLayout
.
Fragment
的XML:
Fragment
's XML:
<android.support.design.widget.CoordinatorLayout 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/root"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/primaryDark"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<android.support.design.widget.AppBarLayout
android:id="@+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="@+id/collapse_toolbar"
android:layout_width="match_parent"
android:layout_height="@dimen/my_wedding_banner_height"
android:minHeight="48dp"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed|snap">
<RelativeLayout
android:id="@+id/banner"
android:layout_width="match_parent"
android:layout_marginTop="0dp"
android:layout_height="match_parent"
app:layout_collapseMode="none">
</RelativeLayout>
<android.support.design.widget.TabLayout
android:id="@+id/tabs"
android:layout_width="match_parent"
android:layout_height="48dp"
android:layout_gravity="bottom"
android:animateLayoutChanges="true"
app:tabMode="fixed"
app:tabGravity="fill"
app:tabTextColor="@color/primary"
app:tabSelectedTextColor="@color/primary"
app:tabIndicatorColor="@color/accent"
app:tabIndicatorHeight="4dp"
app:tabTextAppearance="@style/TabStyle"/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<com.wedmegood.planner.view.XViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
该片段有一个标语,即RelativeLayout.我想同步这两个AppBarLayouts
的滚动,以便外部AppBar折叠之前/之后(无论发生在之前还是之后都无关紧要),内部AppBar折叠之前或之后?我尝试根据其偏移量更改侦听器设置和取消设置2个AppBar的滚动标志,这虽然可行,但无法提供平滑的滚动效果.只要横幅广告正常,我就可以完全更改片段的XML.
The fragment has a banner, the RelativeLayout. I want to sync scroll of these two AppBarLayouts
so that the outer AppBar collapses either before/after (doesn't matter if it happens before or after) the inside AppBar collapses? I tried setting and unsetting scroll flags of 2 AppBars depending on their Offset change listener, it kinda works but doesn't give a smooth scroll effect. I can change the fragment's XML completely as long as the banner works fine.
还可以在CollapsingToolbarLayout折叠/展开时更改样式/调用TabLayout的setTabTextColors吗?
Also, is there a way to change style / call TabLayout's setTabTextColors when CollapsingToolbarLayout collapses/expands?
推荐答案
几天前我遇到了同样的问题.最后,我找到了SwipeRefreshLayout
的解决方案.只需扩展CoordinatorLayout
并实现NestedScrollingChild
接口即可.可行!
I face the same problem days ago. Finally I found solution from SwipeRefreshLayout
. Just extend CoordinatorLayout
and implement NestedScrollingChild
interface. It works!
这是我的代码:
public class NestedCoordinatorLayout extends CoordinatorLayout implements NestedScrollingChild {
private final NestedScrollingChildHelper mNestedScrollingChildHelper;
private final int[] mParentOffsetInWindow = new int[2];
private final int[] mParentScrollConsumed = new int[2];
public NestedCoordinatorLayout(Context context) {
this(context, null, 0);
}
public NestedCoordinatorLayout(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public NestedCoordinatorLayout(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
mNestedScrollingChildHelper = new NestedScrollingChildHelper(this);
setNestedScrollingEnabled(true);
}
// NestedScrollingChild
@Override
public void setNestedScrollingEnabled(boolean enabled) {
mNestedScrollingChildHelper.setNestedScrollingEnabled(enabled);
}
@Override
public boolean isNestedScrollingEnabled() {
return mNestedScrollingChildHelper.isNestedScrollingEnabled();
}
@Override
public boolean startNestedScroll(int axes) {
return mNestedScrollingChildHelper.startNestedScroll(axes);
}
@Override
public void stopNestedScroll() {
mNestedScrollingChildHelper.stopNestedScroll();
}
@Override
public boolean hasNestedScrollingParent() {
return mNestedScrollingChildHelper.hasNestedScrollingParent();
}
@Override
public boolean dispatchNestedScroll(int dxConsumed, int dyConsumed, int dxUnconsumed,
int dyUnconsumed, int[] offsetInWindow) {
return mNestedScrollingChildHelper.dispatchNestedScroll(dxConsumed, dyConsumed,
dxUnconsumed, dyUnconsumed, offsetInWindow);
}
@Override
public boolean dispatchNestedPreScroll(int dx, int dy, int[] consumed, int[] offsetInWindow) {
return mNestedScrollingChildHelper.dispatchNestedPreScroll(dx, dy, consumed, offsetInWindow);
}
@Override
public boolean dispatchNestedFling(float velocityX, float velocityY, boolean consumed) {
return mNestedScrollingChildHelper.dispatchNestedFling(velocityX, velocityY, consumed);
}
@Override
public boolean dispatchNestedPreFling(float velocityX, float velocityY) {
return mNestedScrollingChildHelper.dispatchNestedPreFling(velocityX, velocityY);
}
@Override
public void onNestedScrollAccepted(View child, View target, int axes) {
super.onNestedScrollAccepted(child, target, axes);
// Dispatch up to the nested parent
startNestedScroll(axes & ViewCompat.SCROLL_AXIS_VERTICAL);
}
@Override
public void onStopNestedScroll(View target) {
super.onStopNestedScroll(target);
stopNestedScroll();
}
@Override
public void onNestedScroll(View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) {
super.onNestedScroll(target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed);
dispatchNestedScroll(dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed,
mParentOffsetInWindow);
}
@Override
public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) {
super.onNestedPreScroll(target, dx, dy, consumed);
final int[] parentConsumed = mParentScrollConsumed;
if (dispatchNestedPreScroll(dx - consumed[0], dy - consumed[1], parentConsumed, null)) {
consumed[0] += parentConsumed[0];
consumed[1] += parentConsumed[1];
}
}
}
在片段的布局中使用它.
Use it in your fragment's layout.
这篇关于如何同步两个CoordinatorLayout + AppBarLayout的滚动的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!