hide ActionBar auf Swipe vertikale viewPager

Question

Ich versuche, meine ActionBar/Symbolleiste auf Swipe mit einem vertikalen ViewPager, das ist mein MainActivity XML zu verstecken:

<android.support.v4.widget.DrawerLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:id="@+id/drawer_layout" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:ignore="InconsistentLayout"> 

    <android.support.design.widget.CoordinatorLayout 
     android:id="@+id/coordinator_layout" 
     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:fitsSystemWindows="true"> 

      <include 
       android:id="@+id/toolbar" 
       layout="@layout/view_toolbar" /> 

     </android.support.design.widget.AppBarLayout> 

     <include layout="@layout/view_home" /> 

    </android.support.design.widget.CoordinatorLayout> 

    <include layout="@layout/view_left_drawer" /> 

</android.support.v4.widget.DrawerLayout> 

ich meine Symbolleiste hinzugefügt: app:layout_scrollFlags="scroll|enterAlways"

ich habe nur eine leere Seite in meinem Fragment, das ViewPager nicht sichtbar:

<?xml version="1.0" encoding="utf-8"?> 
<android.support.v4.widget.NestedScrollView 
xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
android:isScrollContainer="false" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:layout_gravity="fill_vertical" 
android:background="@color/greeen_theme" 
android:clipToPadding="false" 
app:layout_behavior="@string/appbar_scrolling_view_behavior"> 

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
      android:background="@color/light_theme_color_read" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent"> 

<Button 
    android:id="@+id/refreshListBtn" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:layout_marginBottom="5dp" 
    android:layout_marginLeft="10dp" 
    android:layout_marginRight="10dp" 
    android:layout_marginTop="10dp" 
    android:background="@drawable/bg_refresh_list_button_selector" 
    android:textColor="@android:color/white" 
    android:visibility="visible"/> 

<com.axample.android.view.SwipeRefreshLayout 
    android:id="@+id/swiperefresh" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 

     <com.axample.android.adapter.vertical.VerticalViewPager 
      android:id="@+id/viewpager" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:paddingBottom="@dimen/pager_padd_botom" 
      android:clipToPadding="false"/> 

</com.axample.android.view.SwipeRefreshLayout> 

</RelativeLayout> 

</android.support.v4.widget.NestedScrollView> 

Video: https://www.youtube.com/watch?v=sWknAZFs6RA

Bitte Hilfe !!

Update: mein view_left_drawer.xml

<?xml version="1.0" encoding="utf-8"?> 
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
     xmlns:tools="http://schemas.android.com/tools" 
     android:id="@+id/left_drawer" 
     android:layout_width="240dp" 
     android:layout_height="match_parent" 
     android:layout_gravity="start" 
     android:background="@color/black_main" 
     tools:showIn="@layout/activity_home"> 

<include layout="@layout/view_drawer_content"/> 
</FrameLayout> 

mein SwipeRefreshLayout: https://github.com/FredJul/Flym/blob/master/Flym/src/main/java/net/fred/feedex/view/SwipeRefreshLayout.java

Answer 1

Problem SwipeRefreshLayout, Es sollte oben auf NestedScrollView-Layout sein.

<android.support.v4.widget.SwipeRefreshLayout 

    <android.support.v4.widget.NestedScrollView 
    </<android.support.v4.widget.NestedScrollView> 

</<android.support.v4.widget.SwipeRefreshLayout> 

activity_main.xml

<?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" 
    android:fitsSystemWindows="true" 
    tools:openDrawer="end" 
    tools:ignore="InconsistentLayout"> 

    <include 
     layout="@layout/app_bar_main" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" /> 

    <android.support.design.widget.NavigationView 
     android:id="@+id/nav_view" 
     android:layout_width="wrap_content" 
     android:layout_height="match_parent" 
     android:layout_gravity="end" 
     android:fitsSystemWindows="true" 
     app:headerLayout="@layout/nav_header_main" 
     app:menu="@menu/activity_main_drawer" /> 

</android.support.v4.widget.DrawerLayout> 

app_bar_main.xml

<?xml version="1.0" encoding="utf-8"?> 
<android.support.design.widget.CoordinatorLayout 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context="com.example.sample.MainActivity" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:tools="http://schemas.android.com/tools" 
    xmlns:android="http://schemas.android.com/apk/res/android"> 

    <android.support.design.widget.AppBarLayout 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:theme="@style/AppTheme.AppBarOverlay" 
     android:layoutDirection="rtl"> 

     <android.support.v7.widget.Toolbar 
      android:id="@+id/toolbar" 
      android:layout_width="match_parent" 
      android:layout_height="?attr/actionBarSize" 
      android:background="?attr/colorPrimary" 
      app:popupTheme="@style/AppTheme.PopupOverlay" 
      app:layout_scrollFlags="scroll|enterAlways"/> 

    </android.support.design.widget.AppBarLayout> 

    <include layout="@layout/content_main"/> 

</android.support.design.widget.CoordinatorLayout> 

content_main.xml

<?xml version="1.0" encoding="utf-8"?> 
<android.support.v4.widget.SwipeRefreshLayout 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:id="@+id/swiperefreshlayout" 
    android:layout_height="match_parent" 
    android:layout_width="match_parent" 
    xmlns:android="http://schemas.android.com/apk/res/android"> 

    <android.support.v4.widget.NestedScrollView 
     android:isScrollContainer="false" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:background="@color/colorPrimary" 
     android:clipToPadding="false" 
     tools:context=".MainActivity" 
     android:fillViewport="true" 
     app:layout_behavior="@string/appbar_scrolling_view_behavior"> 

     <RelativeLayout 
      xmlns:android="http://schemas.android.com/apk/res/android" 
      android:background="@color/colorAccent" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent"> 

      <Button 
       android:id="@+id/refreshListBtn" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       android:layout_marginLeft="10dp" 
       android:layout_marginRight="10dp" 
       android:layout_marginTop="10dp" 
       android:background="@drawable/flat_selector" 
       android:textColor="@android:color/white" 
       android:visibility="visible"/> 
      <TextView 
       android:layout_width="match_parent" 
       android:layout_height="match_parent" 
       android:text="Add Your ViewPager Instead of TextView" 
       android:layout_below="@+id/refreshListBtn" 
       android:layout_alignParentTop="true" 
       android:layout_alignParentBottom="true" 
       android:textColor="#FFFFFF" 
       android:gravity="center"/> 


     </RelativeLayout> 
    </android.support.v4.widget.NestedScrollView> 
</android.support.v4.widget.SwipeRefreshLayout> 

Answer 2

Normalerweise verwende ich diesen Code (siehe unten). Aber das ist für eine andere Art von Layout vorbereitet. Sie können versuchen, es an Ihr Layout anzupassen.

public static class ShowHideToolbarOnScrollingListener implements MyNestedScrollView.ScrollViewListener{ 

    private Toolbar toolbar; 
    private State state; 
    private float toolbarElevation; 

    public ShowHideToolbarOnScrollingListener(Toolbar toolbar, float toolbarElevation) { 
     this.toolbar = toolbar; 
     this.state = new State(); 
     this.toolbarElevation = toolbarElevation; 
    } 

    @TargetApi(Build.VERSION_CODES.LOLLIPOP) 
    private void toolbarSetElevation(float elevation) { 
     if (AndroidUtils.isLollipop()) { 
      toolbar.setElevation(elevation == 0 ? 1 : toolbarElevation); 
     } 
    } 

    private void toolbarAnimateShow(final int verticalOffset) { 
     toolbar.animate() 
       .translationY(0) 
       .setInterpolator(new LinearInterpolator()) 
       .setDuration(180) 
       .setListener(new AnimatorListenerAdapter() { 
        @Override 
        public void onAnimationStart(Animator animation) { 
         toolbarSetElevation(verticalOffset == 0 ? 1 : toolbarElevation); 
        } 
       }); 
    } 

    private void toolbarAnimateHide() { 
     toolbar.animate() 
       .translationY(-toolbar.getHeight()) 
       .setInterpolator(new LinearInterpolator()) 
       .setDuration(180) 
       .setListener(new AnimatorListenerAdapter() { 
        @Override 
        public void onAnimationEnd(Animator animation) { 
         toolbarSetElevation(1); 
        } 
       }); 
    } 




    @TargetApi(Build.VERSION_CODES.LOLLIPOP) 
    public void onRestoreInstanceState(State state) { 
     this.state.verticalOffset = state.verticalOffset; 
     this.state.scrollingOffset = state.scrollingOffset; 
     if (AndroidUtils.isLollipop()) { 
      toolbar.setElevation(state.elevation); 
      toolbar.setTranslationY(state.translationY); 
     } 
    } 

    @TargetApi(Build.VERSION_CODES.LOLLIPOP) 
    public State onSaveInstanceState() { 
     state.translationY = toolbar.getTranslationY(); 
     if (AndroidUtils.isLollipop()) { 
      state.elevation = toolbar.getElevation(); 
     } 
     return state; 
    } 



    @Override 
    public void onScrollChanged(MyNestedScrollView v, int x, int y, int oldx, int oldy) { 
     int dy = y-oldy; 
     Log.d("dy", ""+dy); 
     state.verticalOffset = v.computeVerticalScrollOffset(); 
     state.scrollingOffset = dy; 
     int toolbarYOffset = (int) (dy - toolbar.getTranslationY()); 
     toolbar.animate().cancel(); 
     if (state.scrollingOffset > 0) { 
      if (toolbarYOffset < toolbar.getHeight()) { 
       if (state.verticalOffset > toolbar.getHeight()) { 
        toolbarSetElevation(toolbarElevation); 
       } 
       toolbar.setTranslationY(state.translationY = -toolbarYOffset); 
      } else { 
       toolbarSetElevation(1); 
       toolbar.setTranslationY(state.translationY = -toolbar.getHeight()); 
      } 
     } else if (state.scrollingOffset < 0) { 
      if (toolbarYOffset < 0) { 
       if (state.verticalOffset <= 0) { 
        toolbarSetElevation(1); 
       } 
       toolbar.setTranslationY(state.translationY = 0); 
      } else { 
       if (state.verticalOffset > toolbar.getHeight()) { 
        toolbarSetElevation(toolbarElevation); 
       } 
       toolbar.setTranslationY(state.translationY = -toolbarYOffset); 
      } 
     } 
    } 

    @Override 
    public void onEndScroll() { 
     if (state.scrollingOffset > 0) { 
      if (state.verticalOffset > toolbar.getHeight()) { 
       toolbarAnimateHide(); 
      } else { 
       toolbarAnimateShow(state.verticalOffset); 
      } 
     } else if (state.scrollingOffset < 0) { 
      if (toolbar.getTranslationY() < toolbar.getHeight() * -0.6 && state.verticalOffset > toolbar.getHeight()) { 
       toolbarAnimateHide(); 
      } else { 
       toolbarAnimateShow(state.verticalOffset); 
      } 
     } 
    } 


    /** 
    * Parcelable RecyclerView/Toolbar state for simpler saving/restoring its current state. 
    */ 
    public static final class State implements Parcelable { 
     public static Creator<State> CREATOR = new Creator<State>() { 
      public State createFromParcel(Parcel parcel) { 
       return new State(parcel); 
      } 

      public State[] newArray(int size) { 
       return new State[size]; 
      } 
     }; 

     // Keeps track of the overall vertical offset in the list 
     private int verticalOffset; 
     // Determines the scroll UP/DOWN offset 
     private int scrollingOffset; 
     // Toolbar values 
     private float translationY; 
     private float elevation; 

     State() { 
     } 

     State(Parcel parcel) { 
      this.verticalOffset = parcel.readInt(); 
      this.scrollingOffset = parcel.readInt(); 
      this.translationY = parcel.readFloat(); 
      this.elevation = parcel.readFloat(); 
     } 

     @Override 
     public int describeContents() { 
      return 0; 
     } 

     @Override 
     public void writeToParcel(Parcel parcel, int flags) { 
      parcel.writeInt(verticalOffset); 
      parcel.writeInt(scrollingOffset); 
      parcel.writeFloat(translationY); 
      parcel.writeFloat(elevation); 
     } 
    } 
}