39

W mojej aplikacji mam activity_main.xml tak: -Android alfabetycznej szybko Scrollview w RecyclerView zawaleniem pasek

<Coordinator Layout> 
    <AppBarLayout> 
     <CollapsingToolbarLayout> 
      <ImageView/> 
      <Toolbar/> 
     </CollapsingToolbarLayout> 
    </AppBarLayout> 
    <RecyclerView/> 
</Coordinating Layout> 

layout.xml ----- >>>

<?xml version="1.0" encoding="utf-8"?> 



<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    xmlns:ads="http://schemas.android.com/apk/res-auto" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:background="@drawable/theme_background" 
    android:id="@+id/drawerlayout" 
    > 


    <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:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:fitsSystemWindows="true" 
     android:id="@+id/activity_main_id" 
     tools:context="objectdistance.ajai.ram.sita.gallery.MainActivity"> 

     <android.support.design.widget.AppBarLayout 
      android:id="@+id/app_bar_layout" 
      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/collapsing_toolbar" 
       android:layout_width="match_parent" 
       android:layout_height="match_parent" 
       app:layout_scrollFlags="scroll|exitUntilCollapsed" 
       app:contentScrim="?attr/colorPrimary" 
       app:expandedTitleMarginStart="48dp" 
       app:expandedTitleMarginEnd="64dp" 
       android:fitsSystemWindows="true"> 



       <ImageView 
        android:id="@+id/imagetoolbar" 
        android:layout_width="match_parent" 
        android:layout_height="200dp" 
        android:scaleType="centerCrop" 
        android:fitsSystemWindows="true" 
        android:foreground="@drawable/image_header_foreground" 
        app:layout_scrollFlags="scroll" 
        app:layout_collapseMode="parallax"/> 

       <android.support.v7.widget.Toolbar 
        android:id="@+id/toolbar" 
        android:layout_width="match_parent" 
        android:layout_height="?attr/actionBarSize" 
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light" 
        android:background="@drawable/theme_background" 
        app:layout_collapseMode="pin" > 

        <Spinner 
         android:id="@+id/spinner_nav" 
         android:layout_width="wrap_content" 
         android:layout_height="wrap_content" 

         android:dropDownVerticalOffset="?attr/actionBarSize" /> 

       </android.support.v7.widget.Toolbar> 

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


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




     <android.support.v7.widget.RecyclerView 
      android:id="@+id/list" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      app:layout_behavior="@string/appbar_scrolling_view_behavior" /> 




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


    <ListView 
     android:layout_width="200dp" 
     android:layout_height="match_parent" 
     android:id="@+id/navlist" 
     android:background="#dedede" 
     android:layout_gravity="start" /> 

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

teraz Chcę włączyć szybkie przewijanie do mojego widoku recyclerview tak, aby data obrazu mogła być wyskakująca podczas przewijania.

Przykładowy obraz takiego przewijania: - Scrolling

Szukałem tego i spróbował wykorzystać kilka bibliotek, ale myślę, że ze względu na mój zwijanie paska pasek przewijania nie działa prawidłowo.

Zrzut ekranu przewijania biblioteki używane: - My device

Tu, w moim przypadku pasek przewijania jest zaczynając od góry i obliczeń przewijania nie jest właściwe.

Proszę pomóc w rozwiązaniu tego problemu.

Dzięki

+0

widziałeś: http://stackoverflow.com/questions/ 8192683/how-to-create-an-alfabetycznie-przewijanie-wyświetlanie-wszystkie-litery-w-Androidzie – piotrek1543

+0

przepraszam, ale bez pełnego kodu xml Mogę tylko radzić ci szukać 'alphab etical scrollview' – piotrek1543

+0

@ piotrek1543 Użyłem do tego zewnętrznej biblioteki szybkiego przewijania. Ale teraz myślę, że muszę sam stworzyć wałek. Więc proszę, jeśli możesz mi powiedzieć, jak zacząć –

Odpowiedz

10

chcemy pewną wiedzę z SectionIndexer. Oto Doc z SectionIndexer.

Musimy ustawiony TRUEsetFastScrollEnabled(true) metoda, która jest używana z LISTVIEW ....... Można użyć recyclerview zamiast listView w poniższym przykładzie ....

to aktywność

public class FastScoll extends ListActivity { 

    ListView fruitView; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_fast_scoll); 

     fruitView = (ListView) findViewById(android.R.id.list); 

     fruitView.setFastScrollEnabled(true); 
     String[] fruits = getResources().getStringArray(R.array.fruits_array); 

     final List<String> fruitList = Arrays.asList(fruits); 
     Collections.sort(fruitList); 
     setListAdapter(new ListAdapter(this, fruitList)); 

     fruitView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 

      public void onItemClick(AdapterView<?> parent, View arg1, 
            int position, long arg3) { 
       Log.e("sushildlh",fruitList.get(position)); 
      } 
     }); 

    } 
} 

jest to plik activity_fast_scoll.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:padding="5dp" > 

    <ListView 
     android:id="@android:id/list" 
     android:layout_width="fill_parent" 
     android:layout_height="fill_parent" 
     android:scrollbarStyle="outsideOverlay" /> 

</RelativeLayout> 

a to mój zwyczaj adapter z SectionIndexer ....

public class ListAdapter extends ArrayAdapter<String> implements SectionIndexer { 

    String[] sections; 
    List<String> fruits; 
    List<String> sectionLetters=new ArrayList<String>(); 

    public ListAdapter(Context context, List<String> fruitList) { 
     super(context, android.R.layout.simple_list_item_1, fruitList); 
     this.fruits = fruitList; 

     for (int x = 0; x < fruits.size(); x++) { 
      String fruit = fruits.get(x); 
      String ch = fruit.charAt(0)+""; 
      ch = ch.toUpperCase(Locale.US); 

      sectionLetters.add(ch); 
     } 

     ArrayList<String> sectionList = new ArrayList<String>(sectionLetters); 

     sections = new String[sectionList.size()]; 

     sectionList.toArray(sections); 
    } 

    public int getPositionForSection(int section) { 

     Log.e("sushildlh", "" + section); 
     return section; 
    } 

    public int getSectionForPosition(int position) { 

     Log.d("sushildlh", "" + position); 
     return position; 
    } 

    public Object[] getSections() { 
     return sections; 
    } 
} 

to owoce tablicy w pliku string.xml.

<string-array name="fruits_array"> 
      <item>Apples</item> 
      <item>Apricots</item> 
      <item>Avocado</item> 
      <item>Annona</item> 
      <item>Banana</item> 
      <item>Bilberry</item> 
      <item>Blackberry</item> 
      <item>Custard Apple</item> 
      <item>Clementine</item> 
      <item>Cantalope</item> 
      <item>Coconut</item> 
      <item>Currant</item> 
      <item>Cherry</item> 
      <item>Cherimoya</item> 
      <item>Date</item> 
      <item>Damson</item> 
      <item>Durian</item> 
      <item>Elderberry</item> 
      <item>Fig</item> 
      <item>Feijoa</item> 
      <item>Grapefruit</item> 
      <item>Grape</item> 
      <item>Gooseberry</item> 
      <item>Guava</item> 
      <item>Honeydew melon</item> 
      <item>Huckleberry</item> 
      <item>Jackfruit</item> 
      <item>Juniper Berry</item> 
      <item>Jambul</item> 
      <item>Jujube</item> 
      <item>Kiwi</item> 
      <item>Kumquat</item> 
      <item>Lemons</item> 
      <item>Limes</item> 
      <item>Lychee</item> 
      <item>Mango</item> 
      <item>Mandarin</item> 
      <item>Mangostine</item> 
      <item>Nectaraine</item> 
      <item>Orange</item> 
      <item>Olive</item> 
      <item>Prunes</item> 
      <item>Pears</item> 
      <item>Plum</item> 
      <item>Pineapple</item> 
      <item>Peach</item> 
      <item>Papaya</item> 
      <item>Passionfruit</item> 
      <item>Pomegranate</item> 
      <item>Pomelo</item> 
      <item>Raspberries</item> 
      <item>Rock melon</item> 
      <item>Rambutan</item> 
      <item>Strawberries</item> 
      <item>Sweety</item> 
      <item>Salmonberry</item> 
      <item>Satsuma</item> 
      <item>Tangerines</item> 
      <item>Tomato</item> 
      <item>Ugli</item> 
      <item>Watermelon</item> 
      <item>Woodapple</item> 
     </string-array> 

i wreszcie jest to wyjście z tymi kodu ....

oo1o2

Zapraszam do zadawania jeśli zatrzymany w dowolnym miejscu między kodem ....

Uwaga: - FastScroll obraz będzie się różnić w różnych wersji Androida (np -lollipop, prawoślazu, etc) pod wyjście jest dla lizak

lollipop

Dla klienta Alfabetycznie Szybka Scrollview po prostu dodaj te 2 linie do pliku style.xml w AppTheme.

<item name="android:fastScrollTextColor">@color/apptheme_color</item>   //this is used for the color of the Alphabetical Fast scrollView 
<item name="android:fastScrollPreviewBackgroundRight">@drawable/bg_default_focused_holo_light</item>   //this is the image or and drawable file you want to set on Alphabetical Fast scrollView 

klienta Szybkie Scorll wyjściowa: -

ouy

3

Istnieje duża biblioteka here z tym example. Również jest dobry tutorial here z tym przykładem w Github.

Zastosowanie:

dokonać RecyclerView.Adapter który implementuje BubbleTextGetter, który daną pozycję w danych powróci tekst do pokazania w bubble-popup. umieść FastScroller wewnątrz układu, w którym znajduje się widok RecyclerView (prawdopodobnie w prawym obszarze).

dostosować FastScroller pewne wady:

nie obsługuje zmiany orientacji, ale to chyba łatwe do naprawienia. nie obsługuje innych menedżerów layoutManagers. Tylko LinearLayoutManager Wymaga API 11 i nowszych.

Kod:

BubbleTextGetter

public interface BubbleTextGetter 
    { 
    String getTextToShowInBubble(int pos); 
    } 

recycler_view_fast_scroller__fast_scroller.xml

<?xml version="1.0" encoding="utf-8"?> 
<merge xmlns:android="http://schemas.android.com/apk/res/android" 
     xmlns:tools="http://schemas.android.com/tools" 
     android:layout_width="wrap_content" 
     android:layout_height="match_parent"> 

    <TextView 
    android:id="@+id/fastscroller_bubble" 
    android:layout_gravity="right|end" 
    android:gravity="center" 
    android:textSize="48sp" tools:text="A" 
    android:layout_width="wrap_content" 
    android:textColor="#FFffffff" 
    android:layout_height="wrap_content" 
    android:background="@drawable/recycler_view_fast_scroller__bubble" 
    android:visibility="visible"/> 

    <ImageView 
    android:id="@+id/fastscroller_handle" 
    android:layout_width="wrap_content" 
    android:layout_marginRight="8dp" 
    android:layout_marginLeft="8dp" 
    android:layout_height="wrap_content" 
    android:src="@drawable/recycler_view_fast_scroller__handle"/> 

</merge> 

Teraz ScrollListener:

private class ScrollListener extends OnScrollListener 
    { 
    @Override 
    public void onScrolled(RecyclerView rv,int dx,int dy) 
     { 
     View firstVisibleView=recyclerView.getChildAt(0); 
     int firstVisiblePosition=recyclerView.getChildPosition(firstVisibleView); 
     int visibleRange=recyclerView.getChildCount(); 
     int lastVisiblePosition=firstVisiblePosition+visibleRange; 
     int itemCount=recyclerView.getAdapter().getItemCount(); 
     int position; 
     if(firstVisiblePosition==0) 
     position=0; 
     else if(lastVisiblePosition==itemCount-1) 
     position=itemCount-1; 
     else 
     position=firstVisiblePosition; 
     float proportion=(float)position/(float)itemCount; 
     setPosition(height*proportion); 
     } 
    } 
    } 

Ten zwyczaj Li nearLayout:

public class FastScroller extends LinearLayout 
    { 
    private static final int BUBBLE_ANIMATION_DURATION=100; 
    private static final int TRACK_SNAP_RANGE=5; 

    private TextView bubble; 
    private View handle; 
    private RecyclerView recyclerView; 
    private final ScrollListener scrollListener=new ScrollListener(); 
    private int height; 

    private ObjectAnimator currentAnimator=null; 

    public FastScroller(final Context context,final AttributeSet attrs,final int defStyleAttr) 
    { 
    super(context,attrs,defStyleAttr); 
    initialise(context); 
    } 

    public FastScroller(final Context context) 
    { 
    super(context); 
    initialise(context); 
    } 

    public FastScroller(final Context context,final AttributeSet attrs) 
    { 
    super(context,attrs); 
    initialise(context); 
    } 

    private void initialise(Context context) 
    { 
    setOrientation(HORIZONTAL); 
    setClipChildren(false); 
    LayoutInflater inflater=LayoutInflater.from(context); 
    inflater.inflate(R.layout.recycler_view_fast_scroller__fast_scroller,this,true); 
    bubble=(TextView)findViewById(R.id.fastscroller_bubble); 
    handle=findViewById(R.id.fastscroller_handle); 
    bubble.setVisibility(INVISIBLE); 
    } 

    @Override 
    protected void onSizeChanged(int w,int h,int oldw,int oldh) 
    { 
    super.onSizeChanged(w,h,oldw,oldh); 
    height=h; 
    } 

    @Override 
    public boolean onTouchEvent(@NonNull MotionEvent event) 
    { 
    final int action=event.getAction(); 
    switch(action) 
     { 
     case MotionEvent.ACTION_DOWN: 
     if(event.getX()<handle.getX()) 
      return false; 
     if(currentAnimator!=null) 
      currentAnimator.cancel(); 
     if(bubble.getVisibility()==INVISIBLE) 
      showBubble(); 
     handle.setSelected(true); 
     case MotionEvent.ACTION_MOVE: 
     setPosition(event.getY()); 
     setRecyclerViewPosition(event.getY()); 
     return true; 
     case MotionEvent.ACTION_UP: 
     case MotionEvent.ACTION_CANCEL: 
     handle.setSelected(false); 
     hideBubble(); 
     return true; 
     } 
    return super.onTouchEvent(event); 
    } 

    public void setRecyclerView(RecyclerView recyclerView) 
    { 
    this.recyclerView=recyclerView; 
    recyclerView.setOnScrollListener(scrollListener); 
    } 

    private void setRecyclerViewPosition(float y) 
    { 
    if(recyclerView!=null) 
     { 
     int itemCount=recyclerView.getAdapter().getItemCount(); 
     float proportion; 
     if(handle.getY()==0) 
     proportion=0f; 
     else if(handle.getY()+handle.getHeight()>=height-TRACK_SNAP_RANGE) 
     proportion=1f; 
     else 
     proportion=y/(float)height; 
     int targetPos=getValueInRange(0,itemCount-1,(int)(proportion*(float)itemCount)); 
     recyclerView.scrollToPosition(targetPos); 
     String bubbleText=((BubbleTextGetter)recyclerView.getAdapter()).getTextToShowInBubble(targetPos); 
     bubble.setText(bubbleText); 
     } 
    } 

    private int getValueInRange(int min,int max,int value) 
    { 
    int minimum=Math.max(min,value); 
    return Math.min(minimum,max); 
    } 

    private void setPosition(float y) 
    { 
    int bubbleHeight=bubble.getHeight(); 
    int handleHeight=handle.getHeight(); 
    handle.setY(getValueInRange(0,height-handleHeight,(int)(y-handleHeight/2))); 
    bubble.setY(getValueInRange(0,height-bubbleHeight-handleHeight/2,(int)(y-bubbleHeight))); 
    } 

    private void showBubble() 
    { 
    AnimatorSet animatorSet=new AnimatorSet(); 
    bubble.setVisibility(VISIBLE); 
    if(currentAnimator!=null) 
     currentAnimator.cancel(); 
    currentAnimator=ObjectAnimator.ofFloat(bubble,"alpha",0f,1f).setDuration(BUBBLE_ANIMATION_DURATION); 
    currentAnimator.start(); 
    } 

    private void hideBubble() 
    { 
    if(currentAnimator!=null) 
     currentAnimator.cancel(); 
    currentAnimator=ObjectAnimator.ofFloat(bubble,"alpha",1f,0f).setDuration(BUBBLE_ANIMATION_DURATION); 
    currentAnimator.addListener(new AnimatorListenerAdapter() 
    { 
    @Override 
    public void onAnimationEnd(Animator animation) 
     { 
     super.onAnimationEnd(animation); 
     bubble.setVisibility(INVISIBLE); 
     currentAnimator=null; 
     } 

    @Override 
    public void onAnimationCancel(Animator animation) 
     { 
     super.onAnimationCancel(animation); 
     bubble.setVisibility(INVISIBLE); 
     currentAnimator=null; 
     } 
    }); 
    currentAnimator.start(); 
    } 

Ostatnim krokiem w swojej działalności onCreate:

setContentView(R.layout.activity_main); 
    RecyclerView recyclerView =(RecyclerView)findViewById(R.id.activity_main_recyclerview); 


    FastScroller fastScroller=(FastScroller)findViewById(R.id.fastscroller); 
    fastScroller.setRecyclerView(recyclerView); 

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:tools="http://schemas.android.com/tools" 
    xmlns:ads="http://schemas.android.com/apk/res-auto" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:background="@drawable/theme_background" 
    android:id="@+id/drawerlayout"> 

    <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:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:fitsSystemWindows="true" 
     android:id="@+id/activity_main_id" 
     tools:context="objectdistance.ajai.ram.sita.gallery.MainActivity"> 

     <android.support.design.widget.AppBarLayout 
      android:id="@+id/app_bar_layout" 
      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/collapsing_toolbar" 
       android:layout_width="match_parent" 
       android:layout_height="match_parent" 
       app:layout_scrollFlags="scroll|exitUntilCollapsed" 
       app:contentScrim="?attr/colorPrimary" 
       app:expandedTitleMarginStart="48dp" 
       app:expandedTitleMarginEnd="64dp" 
       android:fitsSystemWindows="true"> 

       <ImageView 
        android:id="@+id/imagetoolbar" 
        android:layout_width="match_parent" 
        android:layout_height="200dp" 
        android:scaleType="centerCrop" 
        android:fitsSystemWindows="true" 
        android:foreground="@drawable/image_header_foreground" 
        app:layout_scrollFlags="scroll" 
        app:layout_collapseMode="parallax"/> 

       <android.support.v7.widget.Toolbar 
        android:id="@+id/toolbar" 
        android:layout_width="match_parent" 
        android:layout_height="?attr/actionBarSize" 
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light" 
        android:background="@drawable/theme_background" 
        app:layout_collapseMode="pin" > 

        <Spinner 
         android:id="@+id/spinner_nav" 
         android:layout_width="wrap_content" 
         android:layout_height="wrap_content" 
         android:dropDownVerticalOffset="?attr/actionBarSize" /> 

       </android.support.v7.widget.Toolbar> 

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

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

    <android.support.v7.widget.RecyclerView 
     android:id="@+id/activity_main_recyclerview" 
     android:layout_width="match_parent" 
     android:layout_height="@dimen/activity_main_height" 
     android:background="@android:color/darker_gray" /> 
</android.support.design.widget.CoordinatorLayout> 
</android.support.v4.widget.DrawerLayout> 
+0

co z wyświetlaniem tekstu wybranego elementu? –

+0

@AkashDubey może to sprawdzić [przykład w GitHub] (https://github.com/thedeveloperworldisyours/FullRecyclerView/tree/master/app/src/main/java/com/thedeveloperworldisyours/fullrecycleview/updateData). – Cabezas