让我们假装简单的简单案例。我有一个FloatingActionButton,我在其上添加了layout_behavior。我需要能够以编程方式启用或禁用该行为。我怎么做?我最初通过xml添加行为
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="@dimen/fab_margin"
android:src="@drawable/mine"
app:backgroundTint="@color/colorPrimary"
app:layout_anchor="@id/default_message"
app:layout_anchorGravity="end|bottom"
app:layout_behavior=“mywidget.ScrollingFABBehavior"/>
答案 0 :(得分:10)
您可以通过
检索LayoutParams
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
CoordinatorLayout.LayoutParams params =
(CoordinatorLayout.LayoutParams) fab.getLayoutParams();
那么你可以直接用setBehavior()设置行为:
params.setBehavior(null);
或者获取您的行为实例并调用方法让它自行禁用(您所做的):
ScrollingFABBehavior behavior =
(ScrollingFABBehavior) params.getBehavior();
// This is a method you write
behavior.setEnabled(false);