众所周知，ScrollView嵌套RecyclerView时会有许多问题，比如RecyclerView显示不全等，所以推荐使用NestedScrollView替代ScrollView, 但是使用NestedScrollView嵌套带有EditText的RecyclerView时，当用户在EditText输入时Recyclerview会上下跳动，这就比较尴尬了， 如下所示：
因此只能继续使用ScrollView,那么解决RecyclerView显示不全的方法也很简单,如下：
- 用RelativeLayout包裹RecyclerView即可,网上有说用LinearLayout包裹也可以,但是我这里不行
- PS：RelativeLayout里不可以设置多余属性,否者会出现上图中上下滚动的现象
下面贴出xml源码,具体设置可查看如下源码：
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".view.scheme.WaterTreatmetSchemeActivity"
android:focusableInTouchMode="true"
android:focusable="true">
<include
android:id="@+id/toolbar"
layout="@layout/toolbar"/>
<ScrollView
android:layout_width="0dp"
android:layout_height="0dp"
android:fillViewport="true"
android:scrollbars="none"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/toolbar">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/tv_tips"
android:layout_width="wrap_content"
android:layout_height="@dimen/height_48_default"
android:text="@string/water_treatment_scheme"
android:gravity="center_vertical"
android:layout_marginStart="@dimen/spacing_16"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
<RelativeLayout
android:id="@+id/rl_water"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="@id/tv_tips">
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_water"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/spacing_16"
android:layout_marginEnd="@dimen/spacing_16"
android:adapter="@{adapter}"
app:layoutManager="@{layoutManager}"
android:nestedScrollingEnabled="false"/>
</RelativeLayout>
<View
android:id="@+id/view_cost"
android:layout_width="0dp"
android:layout_height="@dimen/height_48_default"
app:bgColor="@{@color/water_background}"
app:cornerRadius="@{8}"
android:layout_marginTop="@dimen/spacing_16"
android:layout_marginStart="@dimen/spacing_16"
android:layout_marginEnd="@dimen/spacing_16"
app:layout_constraintStart_toStartOf="@id/rl_water"
app:layout_constraintEnd_toEndOf="@id/rl_water"
app:layout_constraintTop_toBottomOf="@id/rl_water"/>
<TextView
android:id="@+id/tv_construction_cost"
android:layout_width="wrap_content"
android:layout_height="@dimen/height_48_default"
android:text="@string/construction_cost"
android:gravity="center_vertical"
android:textColor="@android:color/white"
android:layout_marginStart="@dimen/spacing_16"
app:layout_constraintStart_toStartOf="@id/view_cost"
app:layout_constraintTop_toTopOf="@id/view_cost"/>
<EditText
android:id="@+id/et_construction_cost"
android:layout_width="wrap_content"
android:layout_height="@dimen/height_48_default"
android:text="@={DataBindingUtils.convertIntToString(water.constrPrice)}"
android:enabled="@{MyConfig.INFOPURVIEW_PERMS==permission?false:true}"
android:textColor="@android:color/white"
android:background="@color/water_background"
android:paddingStart="@dimen/spacing_8_default"
android:paddingEnd="@dimen/spacing_8_default"
app:layout_constraintStart_toEndOf="@id/tv_construction_cost"
app:layout_constraintTop_toTopOf="@id/tv_construction_cost"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="@dimen/height_48_default"
android:text="@string/price_unit"
android:textColor="@android:color/white"
android:gravity="center_vertical"
app:layout_constraintStart_toEndOf="@id/et_construction_cost"
app:layout_constraintTop_toTopOf="@id/et_construction_cost"/>
<Button
android:id="@+id/btn_add_device"
android:layout_width="@dimen/width_120"
android:layout_height="@dimen/height_48_default"
android:text="@string/add_device"
android:gravity="center"
android:textColor="@android:color/white"
android:onClick="@{()->viewModel.chooseDevices()}"
android:enabled="@{permission==MyConfig.INFOPURVIEW_PERMS?false:true}"
app:layout_constraintStart_toStartOf="@id/view_cost"
app:layout_constraintEnd_toEndOf="@id/view_cost"
app:layout_constraintTop_toBottomOf="@id/view_cost"/>
<Button
android:id="@+id/btn_back"
android:layout_width="@dimen/width_120"
android:layout_height="@dimen/height_48_default"
android:text="@string/back_doc"
android:textColor="@android:color/white"
android:onClick="@{()->viewModel.pageUp()}"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/btn_add_device"
app:layout_constraintEnd_toStartOf="@+id/btn_next"/>
<Button
android:id="@+id/btn_next"
android:layout_width="@dimen/width_120"
android:layout_height="@dimen/height_48_default"
android:text="@string/next_doc"
android:onClick="@{()->viewModel.pageDown()}"
android:textColor="@android:color/white"
app:layout_constraintStart_toEndOf="@id/btn_back"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintBottom_toBottomOf="@id/btn_back"/>
</android.support.constraint.ConstraintLayout>
</ScrollView>
</android.support.constraint.ConstraintLayout>
ok
