Join the social network of Tech Nerds, increase skill rank, get work, manage projects...
 
  • How to expand and collapse header/toolbar in android

    • 0
    • 0
    • 0
    • 0
    • 0
    • 0
    • 0
    • 0
    • 1.87k
    Comment on it

    1. Coordinator Layout: Coordinator layout is the super set of frame layout. Expanding and contracting of header/toolbar to gain more view for the main content. As per the property of frame layout it can have multiple child views but the additional feature by coordinate layout is that, child views can interact with each other easily.

    <android.support.design.widget.CoordinatorLayout 
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/main_content"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@android:color/white"
        android:fitsSystemWindows="true">
    
    </android.support.design.widget.CoordinatorLayout>

    2. AppBar Layout: Many of the scrolling gestures can br performed using AppBar Layout. In many of the cases AppBar Layout is used as a child of Coordinator layout. It's functionality within a different viewGroup will not work.

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="-20dp"
        android:background="@android:color/white"
        android:fitsSystemWindows="true"
        android:theme="@style/AppTheme.NoActionBar">
    
    </android.support.design.widget.AppBarLayout>

    3. CollapsingToolbar Layout: CollapsingToolbar will be the direct child of AppBar Layout. Whenever user scrolls to upward direction the view inside CollapsingToolbar gets dimnished and makes a animation effect.

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsing_toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fitsSystemWindows="true"
        app:contentScrim="#673AB7"
        app:layout_scrollFlags="scroll|exitUntilCollapsed">
    
    </android.support.design.widget.CollapsingToolbarLayout>

    Example:-

    <?xml version="1.0" encoding="utf-8"?>
    <android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/main_content"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fitsSystemWindows="true">
    
        <android.support.design.widget.AppBarLayout
            android:id="@+id/MyAppbar"
            android:layout_width="match_parent"
            android:layout_height="256dp"
            android:fitsSystemWindows="true">
    
            <android.support.design.widget.CollapsingToolbarLayout
                android:id="@+id/collapse_toolbar"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:background="@android:color/darker_gray"
                android:fitsSystemWindows="true"
                app:layout_scrollFlags="scroll|exitUntilCollapsed">
    
            </android.support.design.widget.CollapsingToolbarLayout>
    
        </android.support.design.widget.AppBarLayout>
    
        <android.support.v4.widget.NestedScrollView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_gravity="fill_vertical"
            app:layout_behavior="@string/appbar_scrolling_view_behavior">
    
            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical"
                android:paddingTop="24dp">
    
            </LinearLayout>
    
        </android.support.v4.widget.NestedScrollView>
    
    </android.support.design.widget.CoordinatorLayout>

     

 0 Comment(s)

Sign In
                           OR                           
                           OR                           
Register

Sign up using

                           OR                           
Forgot Password
Fill out the form below and instructions to reset your password will be emailed to you:
Reset Password
Fill out the form below and reset your password: