我能够创建底页卡片视图。我正在尝试将我拥有的内容转换为顶层卡片视图(当用户单击按钮时,卡片视图应从顶部而不是底部出现)。感谢您的协助。
SheetBehaviorActivity.kt
class SheetBehaviourActivity : AppCompatActivity() {
lateinit var sheetBehavior: BottomSheetBehavior<*>
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val btn: Button = this.findViewById(R.id.testing_bottom_sheet_btn)
btn.setOnClickListener {
if (sheetBehavior.state != BottomSheetBehavior.STATE_EXPANDED) {
sheetBehavior.state = BottomSheetBehavior.STATE_EXPANDED
btn.text = "Close sheet"
} else {
sheetBehavior.state = BottomSheetBehavior.STATE_HIDDEN
btn.text = "Expand sheet"
}
}
val sheetContainer = findViewById<CardView>(R.id.bottom_sheet_container)
sheetBehavior = BottomSheetBehavior.from(sheetContainer)
sheetBehavior.isHideable = true
sheetBehavior.state = BottomSheetBehavior.STATE_HIDDEN
}
}
activity_main.xml
<?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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".activities.SheetBehaviourActivity">
<Button
android:id="@+id/testing_bottom_sheet_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Expand Sheet" />
<android.support.v7.widget.CardView
android:id="@+id/bottom_sheet_container"
android:layout_width="match_parent"
app:cardCornerRadius="20dp"
app:cardBackgroundColor="@android:color/holo_blue_light"
app:layout_behavior="android.support.design.widget.BottomSheetBehavior"
android:layout_height="300dp"/>
</android.support.design.widget.CoordinatorLayout>
答案 0 :(得分:1)
对于我来说,这是TopSheetBehavior
实现topSheetLayout的正常工作
这是您的操作方式:
<?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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".activities.SheetBehaviourActivity">
<Button
android:id="@+id/testing_bottom_sheet_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Expand Sheet" />
<android.support.v7.widget.CardView
android:id="@+id/bottom_sheet_container"
android:layout_width="match_parent"
app:cardCornerRadius="20dp"
app:cardBackgroundColor="@android:color/holo_blue_light"
app:behavior_hideable="true"
app:behavior_peekHeight="56dp"
app:layout_behavior="your.package.components.TopSheetBehavior"/>
</android.support.design.widget.CoordinatorLayout>
此TopSheetBehavior
只是替换了行为参数