वेबबैक

Question

Google क्रोम और प्ले स्टोर में स्क्रॉलिंग करते समय एक्शनबार/टूलबार को कैसे छुपाएं। स्क्रॉल करते समय ऐप एक्शनबार छुपा सकता है और उपयोगकर्ता को आसानी से ब्राउज़ करने की अनुमति देता है। कृपया मुझे ऐसा करने में मदद करें।

मैंने वेबव्यू के लिए टच लिस्टनर पर उपयोग किया है, यह काम नहीं करता है।

mWebView.setOnTouchListener(new View.OnTouchListener() { 
      @Override 
      public boolean onTouch(View v, MotionEvent event) { 
       switch (event.getAction()) { 
        case MotionEvent.ACTION_DOWN: 
         getSupportActionBar().show(); 
          break; 
        case MotionEvent.ACTION_UP: 
         getSupportActionBar().hide(); 
          break; 
        default: break; 
       } 
       return false; 
      } 
     }); 

धन्यवाद अग्रिम

Answer 1

में आप डिजाइन लाइब्रेरी की CoordinatorLayout और NestedScrollView का उपयोग कर किसी भी जावा कोड के बिना यह कर सकते हैं। यहां बताया गया है कि आप इसे कैसे करते हैं।

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
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="?attr/colorPrimary" 
     app:layout_scrollFlags="scroll|enterAlways" 
     app:popupTheme="@style/ThemeOverlay.AppCompat.Light" /> 
</android.support.design.widget.AppBarLayout> 

<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:layout_gravity="fill_vertical" 
    app:layout_behavior="@string/appbar_scrolling_view_behavior"> 

    <WebView 
     android:id="@+id/webview" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent"/> 
</android.support.v4.widget.NestedScrollView> 
</android.support.design.widget.CoordinatorLayout> 

के बाद आप उसे के लटका मिलता अलग layout_scrollFlags और fitsSystemWindows व्यवहार के साथ साथ चारों ओर खेल सकते हैं।

Answer 2

खैर मैं CustomWebView और GestureDetector से लागू कर दिया है:

CustomWebView.java:

public class CustomWebView extends WebView { 
    private GestureDetector gestureDetector; 
    public CustomWebView(Context context) { 
     super(context); 
    } 
    public CustomWebView(Context context, AttributeSet attrs) { 
     super(context, attrs); 
    } 
    public CustomWebView(Context context, AttributeSet attrs, int defStyle) { 
     super(context, attrs, defStyle); 
    } 
    @Override 
    protected void onScrollChanged(int l, int t, int oldl, int oldt) { 
     super.onScrollChanged(l, t, oldl, oldt); 
    } 

    @Override 
    public boolean onTouchEvent(MotionEvent ev) { 
     return gestureDetector.onTouchEvent(ev) || super.onTouchEvent(ev); 
    } 

    public void setGestureDetector(GestureDetector gestureDetector) { 
     this.gestureDetector = gestureDetector; 
    } 
} 

web_fragment.xml:

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:background="@android:color/transparent" 
    android:orientation="vertical"> 

    <com.customview.CustomWebView 
      android:id="@+id/customWebView" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:focusable="true" /> 

</LinearLayout> 

CustomeGestureDetector इशारा जांच के लिए CLSS (मैं टुकड़ा में शामिल किया है):

private class CustomeGestureDetector extends GestureDetector.SimpleOnGestureListener { 
     @Override 
     public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { 
      if(e1 == null || e2 == null) return false; 
      if(e1.getPointerCount() > 1 || e2.getPointerCount() > 1) return false; 
      else { 
       try { 
        if(e1.getY() - e2.getY() > 20) { 
          // Hide Actionbar 
         getSupportActionBar().hide(); 
         customWebView.invalidate(); 
         return false; 
        } 
        else if (e2.getY() - e1.getY() > 20) { 
          // Show Actionbar 
         getSupportActionBar().show(); 
         customWebView.invalidate(); 
         return false; 
        } 

       } catch (Exception e) { 
        customWebView.invalidate(); 
       } 
       return false; 
      } 


     } 
    } 

WebFragment.java:

private CustomWebView customWebView; 

customWebView= (CustomWebView) view.findViewById(R.id.customWebView); 

customWebView.setGestureDetector(new GestureDetector(new CustomeGestureDetector())); 

यह मेरे लिए ठीक काम करता है, आशा है कि यह आप में मदद मिलेगी।

Answer 3

कार्रवाई बार छिपाने के लिए

package com.keshav.hideactionbarandfooterexample; 

import android.os.Bundle; 
import android.support.v7.app.AppCompatActivity; 
import android.support.v7.widget.LinearLayoutManager; 
import android.support.v7.widget.RecyclerView; 
import android.support.v7.widget.Toolbar; 
import android.util.Log; 
import android.view.View; 
import android.view.animation.AccelerateInterpolator; 
import android.view.animation.DecelerateInterpolator; 
import android.widget.FrameLayout; 
import android.widget.ImageButton; 

import java.util.ArrayList; 
import java.util.List; 

import adapters.RecyclerAdapter; 
import listners.HidingScrollListener; 

public class MainActivity extends AppCompatActivity { 

    private Toolbar mToolbar; 
    private Toolbar toolbar_bottom; 
    private ImageButton mFabButton; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     setTheme(R.style.AppThemeRed); 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     Log.e("keshav", "MainActivity called"); 

     initToolbar(); 
     mFabButton = (ImageButton) findViewById(R.id.fabButton); 
     initRecyclerView(); 
    } 

    private void initToolbar() { 
     mToolbar = (Toolbar) findViewById(R.id.toolbar); 
     toolbar_bottom = (Toolbar) findViewById(R.id.toolbar_bottom); 
     setSupportActionBar(mToolbar); 
     setSupportActionBar(toolbar_bottom); 
     setTitle(getString(R.string.app_name)); 
     mToolbar.setTitleTextColor(getResources().getColor(android.R.color.white)); 
     toolbar_bottom.setTitleTextColor(getResources().getColor(android.R.color.white)); 


     toolbar_bottom.setVisibility(View.GONE); 
    } 

    private void initRecyclerView() { 
     RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView); 
     recyclerView.setLayoutManager(new LinearLayoutManager(this)); 
     RecyclerAdapter recyclerAdapter = new RecyclerAdapter(createItemList()); 
     recyclerView.setAdapter(recyclerAdapter); 

     recyclerView.addOnScrollListener(new HidingScrollListener() { 
      @Override 
      public void onHide() { 
       hideViews(); 
      } 

      @Override 
      public void onShow() { 
       showViews(); 
      } 
     }); 
    } 

    private void hideViews() { 
     // TODO (-mToolbar) plus means 2 view above ho jaye or not visible to user 
     mToolbar.animate().translationY(-mToolbar.getHeight()).setInterpolator(new AccelerateInterpolator(2)); 

     // TODO uncomment this Hide Footer in android when Scrolling 
     // TODO (+mToolbar) plus means 2 view forward ho jaye or not visible to user 
     toolbar_bottom.animate().translationY(+toolbar_bottom.getHeight()).setInterpolator(new AccelerateInterpolator(2)); 

     // TODO keshav Hide Also Floatng Button In Android 
     FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mFabButton.getLayoutParams(); 
     int fabBottomMargin = lp.bottomMargin; 
     mFabButton.animate().translationY(mFabButton.getHeight() + fabBottomMargin).setInterpolator(new AccelerateInterpolator(2)).start(); 
     // TODO keshav Hide Also Floatng Button In Android 
    } 

    private void showViews() { 
     mToolbar.animate().translationY(0).setInterpolator(new DecelerateInterpolator(2)); 

     // TODO uncomment this Hide Footer in android when Scrolling 
     toolbar_bottom.animate().translationY(0).setInterpolator(new DecelerateInterpolator(2)); 
     mFabButton.animate().translationY(0).setInterpolator(new DecelerateInterpolator(2)).start(); 
    } 

    private List<String> createItemList() { 
     List<String> itemList = new ArrayList<>(); 
     for (int i = 0; i < 20; i++) { 
      itemList.add("Item " + i); 
     } 
     return itemList; 
    } 
} 

============================================= 
      RecyclerAdapter 
============================================= 
package adapters; 

import android.content.Context; 
import android.support.v7.widget.RecyclerView; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 

import com.keshav.hideactionbarandfooterexample.R; 

import java.util.List; 

/* 
* RecyclerView Adapter that allows to add a header view. 
* */ 
public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> { 

    private static final int TYPE_HEADER = 2; 
    private static final int TYPE_ITEM = 1; 
    private List<String> mItemList; 

    public RecyclerAdapter(List<String> itemList) { 
     mItemList = itemList; 
    } 

    @Override 
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
     Context context = parent.getContext(); 
     if (viewType == TYPE_ITEM) { 
      final View view = LayoutInflater.from(context).inflate(R.layout.recycler_item, parent, false); 
      return RecyclerItemViewHolder.newInstance(view); 
     } else if (viewType == TYPE_HEADER) { 
      final View view = LayoutInflater.from(context).inflate(R.layout.recycler_header, parent, false); 
      return new RecyclerHeaderViewHolder(view); 
     } 
     throw new RuntimeException("There is no type that matches the type " + viewType + " + make sure your using types correctly"); 
    } 

    @Override 
    public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int position) { 
     if (!isPositionHeader(position)) { 
      RecyclerItemViewHolder holder = (RecyclerItemViewHolder) viewHolder; 
      String itemText = mItemList.get(position - 1); // header 
      holder.setItemText(itemText); 
     } 
    } 

    public int getBasicItemCount() { 
     return mItemList == null ? 0 : mItemList.size(); 
    } 


    @Override 
    public int getItemViewType(int position) { 
     if (isPositionHeader(position)) { 
      return TYPE_HEADER; 
     } 

     return TYPE_ITEM; 
    } 

    @Override 
    public int getItemCount() { 
     return getBasicItemCount() + 1; // header 
    } 

    private boolean isPositionHeader(int position) { 
     return position == 0; 
    } 

} 

===================================================== 
     RecyclerHeaderViewHolder 
===================================================== 
package adapters; 

import android.support.v7.widget.RecyclerView; 
import android.view.View; 

public class RecyclerHeaderViewHolder extends RecyclerView.ViewHolder { 
    public RecyclerHeaderViewHolder(View itemView) { 
     super(itemView); 
    } 
} 

===================================================== 
       RecyclerItemViewHolder 
===================================================== 

package adapters; 

import android.support.v7.widget.RecyclerView; 
import android.view.View; 
import android.widget.TextView; 

import com.keshav.hideactionbarandfooterexample.R; 


public class RecyclerItemViewHolder extends RecyclerView.ViewHolder { 

    private final TextView mItemTextView; 

    public RecyclerItemViewHolder(final View parent, TextView itemTextView) { 
     super(parent); 
     mItemTextView = itemTextView; 
    } 

    public static RecyclerItemViewHolder newInstance(View parent) { 
     TextView itemTextView = (TextView) parent.findViewById(R.id.itemTextView); 
     return new RecyclerItemViewHolder(parent, itemTextView); 
    } 

    public void setItemText(CharSequence text) { 
     mItemTextView.setText(text); 
    } 

} 

=================================================== 
      activity_main.xml 
=================================================== 

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
       android:layout_width="match_parent" 
       android:layout_height="match_parent"> 

    <android.support.v7.widget.RecyclerView 
      android:id="@+id/recyclerView" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent"/> 

    <android.support.v7.widget.Toolbar 
      android:id="@+id/toolbar" 
      android:layout_width="match_parent" 
      android:layout_height="?attr/actionBarSize" 
      android:background="?attr/colorPrimary"/> 

    <ImageButton 
      android:id="@+id/fabButton" 
      android:layout_width="56dp" 
      android:layout_height="56dp" 
      android:layout_gravity="bottom|right" 
      android:layout_marginBottom="16dp" 
      android:layout_marginRight="16dp" 
      android:background="@drawable/fab_bcg" 
      android:src="@drawable/ic_favorite_outline_white_24dp" 
      android:contentDescription="@string/fab_description"/> 


    <RelativeLayout 
     android:layout_width="match_parent" 
     android:layout_height="match_parent"> 

    <android.support.v7.widget.Toolbar 
     android:id="@+id/toolbar_bottom" 
     android:layout_width="match_parent" 
     android:layout_alignParentBottom="true" 
     android:layout_height="?attr/actionBarSize" 
     android:background="?attr/colorPrimary"/> 

    </RelativeLayout> 

</FrameLayout> 


================================================== 
    recycle_header.xml in layout folder 
================================================== 

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

================================================== 
    recycle_item.xml in layout folder 
================================================== 
<?xml version="1.0" encoding="utf-8"?> 
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:card_view="http://schemas.android.com/apk/res-auto" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:layout_gravity="center" 
    android:layout_margin="8dp" 
    card_view:cardCornerRadius="4dp"> 
    <TextView 
     android:id="@+id/itemTextView" 
     android:layout_width="match_parent" 
     android:layout_height="?attr/listPreferredItemHeight" 
     android:gravity="center_vertical" 
     android:padding="8dp" 
     style="@style/Base.TextAppearance.AppCompat.Body2"/> 
</android.support.v7.widget.CardView> 


================================================= 
         styles.xml 
================================================= 
<resources> 

    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar"> 
    </style> 

    <style name="AppThemeRed" parent="AppTheme"> 
     <item name="colorPrimary">@color/color_primary_red</item> 
     <item name="colorPrimaryDark">@color/color_primary_red_dark</item> 
    </style> 

    <style name="AppThemeGreen" parent="AppTheme"> 
     <item name="colorPrimary">@color/color_primary_green</item> 
     <item name="colorPrimaryDark">@color/color_primary_green_dark</item> 
    </style> 

    <style name="AppThemeBlue" parent="AppTheme"> 
     <item name="colorPrimary">@color/color_primary_blue</item> 
     <item name="colorPrimaryDark">@color/color_primary_blue_dark</item> 
     <item name="colorAccent">@color/color_accent_pink</item> 
    </style> 

</resources> 

build.gradle निर्भरता

compile 'com.android.support:appcompat-v7:25.3.1' 
    compile 'com.android.support:recyclerview-v7:25.3.1' 
    compile 'com.android.support:cardview-v7:25.3.1' 
    compile 'com.android.support:design:25.3.1'