以編程方式設置工具欄layout_collapseMode

Question

有沒有什麼辦法可以通過編程方式更改我的android.support.v7.widget.Toolbar layout_collapseMode屬性？

<?xml version="1.0" encoding="utf-8"?> 
<android.support.v7.widget.Toolbar 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="?attr/actionBarSize" 
    app:layout_collapseMode="pin" 
    app:theme="@style/ToolBarTheme" 
    app:popupTheme="@style/ThemeOverlay.AppCompat.Light"> 

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

Answer 1

試試這個

ViewGroup.LayoutParams params = toolbar.getLayoutParams(); 
CollapsingToolbarLayout.LayoutParams newParams; 
if (params instanceof CollapsingToolbarLayout.LayoutParams) { 
    newParams = (CollapsingToolbarLayout.LayoutParams)params; 
} else { 
    newParams = new CollapsingToolbarLayout.LayoutParams(params); 
} 
newParams.setCollapseMode(CollapsingToolbarLayout.LayoutParams.COLLAPSE_MODE_OFF); 
toolbar.setLayoutParams(newParams); 
toolbar.requestLayout(); 

https://developer.android.com/reference/android/support/design/widget/CollapsingToolbarLayout.LayoutParams.html

Answer 2

<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/tabanim_maincontent" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent">  

    <com.gplanet.qpeople.widget.ControllableAppBarLayout 
     android:id="@+id/tabanim_appbar" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     app:layout_scrollFlags="exitUntilCollapsed" 
     android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"> 

    <android.support.v7.widget.Toolbar 
     android:id="@+id/tabanim_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.TabLayout 
     android:id="@+id/tabanim_tabs" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:background="@color/white" 
     app:layout_scrollFlags="enterAlways" /> 
</com.gplanet.qpeople.widget.ControllableAppBarLayout 

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

ControllableAppBarLayout https://gist.github.com/blipinsk/3f8fb37209de6d3eea99

您可以撥打

appBarLayout.expandToolbar(true); // true to animate when expand, 
appBarLayout.collapseToolbar(true);