我在 ScrollView
中有一个 ConstraintLayout
,它是我布局的 Root View 。我希望 ScrollView 在设备的高度小于布局所需的高度时立即开始滚动。
我的布局 xml 是:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView android:layout_width="match_parent"
android:layout_height="match_parent"
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"
tools:context="com.clickagee.babybind.AccountSettingActivity"
android:descendantFocusability="beforeDescendants"
android:focusableInTouchMode="true"
android:fillViewport="true">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/tv_account_title"
style="@style/textXLargePurple"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/margin_padding_size_medium"
android:layout_marginTop="@dimen/margin_padding_size_medium"
android:text="@string/account"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/btn_add_partner"
style="@style/button"
android:layout_width="wrap_content"
android:layout_height="40dp"
android:layout_marginEnd="@dimen/margin_padding_size_medium"
android:background="@drawable/custom_button_purple_outline"
android:paddingEnd="@dimen/margin_padding_size_medium"
android:paddingStart="@dimen/margin_padding_size_medium"
android:text="@string/add_partner"
android:textColor="@color/colorAccent"
app:layout_constraintBottom_toBottomOf="@id/tv_account_title"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="@id/tv_account_title" />
<LinearLayout
android:id="@+id/ll_upload_change_photo_pane"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/margin_padding_size_large"
android:orientation="vertical"
app:layout_constraintEnd_toStartOf="parent"
app:layout_constraintStart_toEndOf="parent"
app:layout_constraintTop_toBottomOf="@id/btn_add_partner">
<de.hdodenhof.circleimageview.CircleImageView
android:id="@+id/civ_change_upload_photo"
android:layout_width="130dp"
android:layout_height="130dp"
android:src="@drawable/ic_upload_user_image" />
<TextView
android:id="@+id/tv_upload_change_photo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="@string/upload_photo" />
</LinearLayout>
<android.support.design.widget.TextInputLayout
android:id="@+id/til_user_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="@dimen/margin_padding_size_medium"
android:layout_marginStart="@dimen/margin_padding_size_medium"
android:layout_marginTop="@dimen/margin_padding_size_medium"
app:layout_constraintTop_toBottomOf="@id/ll_upload_change_photo_pane">
<android.support.design.widget.TextInputEditText
android:id="@+id/et_user_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/name_hint"
android:inputType="textCapWords"
android:lines="1"
android:maxLines="1"
android:singleLine="true"
android:paddingBottom="@dimen/margin_padding_size_medium"/>
</android.support.design.widget.TextInputLayout>
<TextView
android:id="@+id/tv_gender_account_setting"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/margin_padding_size_medium"
android:layout_marginTop="@dimen/margin_padding_size_small"
android:text="@string/gender"
android:textColor="@color/light_grey"
android:textSize="@dimen/text_size_small"
app:layout_constraintTop_toBottomOf="@id/til_user_name" />
<RadioGroup
android:id="@+id/rg_user_gender"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="@dimen/margin_padding_size_medium"
android:layout_marginStart="@dimen/margin_padding_size_medium"
android:layout_marginTop="@dimen/margin_padding_size_small"
android:orientation="horizontal"
android:weightSum="3"
app:layout_constraintTop_toBottomOf="@id/tv_gender_account_setting">
<RadioButton
android:id="@+id/rb_user_male_account_settings"
style="@style/textLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="@dimen/margin_padding_size_medium"
android:layout_weight="1"
android:background="@drawable/rbtn_selector"
android:button="@drawable/custom_radio_button_male"
android:padding="@dimen/margin_padding_size_small"
android:paddingEnd="@dimen/margin_padding_size_medium"
android:text="@string/male"
android:ellipsize="end"
android:maxLines="1"
android:textColor="@color/radio_button_text_colors" />
<RadioButton
android:id="@+id/rb_user_female_account_settings"
style="@style/textLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="@dimen/margin_padding_size_medium"
android:layout_weight="1"
android:background="@drawable/rbtn_selector"
android:button="@drawable/custom_radio_button_female"
android:padding="@dimen/margin_padding_size_small"
android:paddingEnd="@dimen/margin_padding_size_medium"
android:text="@string/female"
android:ellipsize="end"
android:maxLines="1"
android:textColor="@color/radio_button_text_colors" />
<RadioButton
android:id="@+id/rb_user_other_account_settings"
style="@style/textLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@drawable/rbtn_selector"
android:button="@drawable/custom_radio_button_other"
android:padding="@dimen/margin_padding_size_small"
android:paddingEnd="@dimen/margin_padding_size_medium"
android:text="@string/other"
android:ellipsize="end"
android:maxLines="1"
android:textColor="@color/radio_button_text_colors" />
</RadioGroup>
<android.support.design.widget.TextInputLayout
android:id="@+id/til_user_phone_number"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/margin_padding_size_medium"
app:layout_constraintTop_toBottomOf="@id/rg_user_gender">
<android.support.design.widget.TextInputEditText
android:id="@+id/et_user_phone_number"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="@dimen/margin_padding_size_medium"
android:layout_marginStart="@dimen/margin_padding_size_medium"
android:hint="@string/phone_number_hint"
android:inputType="phone"
android:lines="1"
android:maxLines="1"
android:singleLine="true"
android:paddingBottom="@dimen/margin_padding_size_medium"/>
</android.support.design.widget.TextInputLayout>
<android.support.design.widget.TextInputLayout
android:id="@+id/til_user_email"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="@dimen/margin_padding_size_medium"
android:layout_marginStart="@dimen/margin_padding_size_medium"
android:layout_marginTop="@dimen/margin_padding_size_medium"
app:layout_constraintTop_toBottomOf="@id/til_user_phone_number">
<android.support.design.widget.TextInputEditText
android:id="@+id/et_user_email"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/email_hint"
android:inputType="textEmailAddress"
android:lines="1"
android:maxLines="1"
android:singleLine="true"
android:paddingBottom="@dimen/margin_padding_size_medium"/>
</android.support.design.widget.TextInputLayout>
<LinearLayout
android:id="@+id/btn_save_details_ll"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginEnd="@dimen/margin_padding_size_medium"
android:layout_marginStart="@dimen/margin_padding_size_medium"
android:layout_marginTop="@dimen/margin_padding_size_large"
android:gravity="center"
android:orientation="horizontal"
app:layout_constraintTop_toBottomOf="@id/til_user_email">
<br.com.simplepass.loading_button_lib.customViews.CircularProgressButton
android:id="@+id/btn_save_details"
style="@style/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/custom_button"
android:padding="@dimen/margin_padding_size_small"
android:text="@string/save_details"
android:textColor="@color/white"
app:spinning_bar_color="@color/white"
app:spinning_bar_padding="@dimen/spinning_bar_padding"
app:spinning_bar_width="@dimen/spinning_bar_width" />
</LinearLayout>
<Button
android:id="@+id/btn_cancel_account_settings"
style="@style/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="@dimen/margin_padding_size_medium"
android:layout_marginStart="@dimen/margin_padding_size_medium"
android:layout_marginTop="16dp"
android:background="@drawable/custom_button_purple_outline"
android:padding="@dimen/margin_padding_size_small"
android:text="@string/cancel"
android:textColor="@color/colorAccent"
app:layout_constraintTop_toBottomOf="@id/btn_save_details_ll"
android:layout_marginBottom="@dimen/margin_padding_size_small"/>
</android.support.constraint.ConstraintLayout>
</ScrollView>
但是无论所需的高度是否更小,我都会滚动。
最佳答案
您的 btn_cancel_account_settings
缺少 layout_constraintBottom_toBottomOf="parent"
<Button
android:id="@+id/btn_cancel_account_settings"
style="@style/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="@dimen/margin_padding_size_medium"
android:layout_marginStart="@dimen/margin_padding_size_medium"
android:layout_marginTop="16dp"
android:background="@drawable/custom_button_purple_outline"
android:padding="@dimen/margin_padding_size_small"
android:text="@string/cancel"
android:textColor="@color/colorAccent"
app:layout_constraintTop_toBottomOf="@id/btn_save_details_ll"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="@dimen/margin_padding_size_small"/>
关于android - ScrollView 根目录中的 ConstraintLayout 未按预期工作,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/51171672/