当用户点击使用FloatingActionButton
方法锚定底部工作表的fab
按钮时,我试图隐藏hide()
,但工厂不会隐藏。
目前使用支持库版本26.1.0
活动
public class A_TestActivity extends AppCompatActivity {
FloatingActionButton fab;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.a_test_activity);
fab = findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
fab.hide(); // not working
Toast.makeText(A_TestActivity.this, "hide()", Toast.LENGTH_SHORT).show();
}
});
}
}
XML布局
<?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"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/coordinatorLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#AAAAAA">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"/>
<!-- Bottom Sheet -->
<android.support.v4.widget.NestedScrollView
android:id="@+id/vBottomSheetRoot"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/white"
app:layout_behavior="android.support.design.widget.BottomSheetBehavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/tv"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Sample text" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
<!-- Floating action button -->
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:elevation="4dp"
app:layout_anchor="@id/vBottomSheetRoot"
app:layout_anchorGravity="top|right|end" />
</android.support.design.widget.CoordinatorLayout>
答案 0 :(得分:2)
这是由app:layout_anchor
属性引起的。您必须在更改visibility.try此代码之前删除锚点
CoordinatorLayout.LayoutParams p = (CoordinatorLayout.LayoutParams) fab.getLayoutParams();
p.setAnchorId(View.NO_ID);
fab.setLayoutParams(p);
fab.hide();