我已经搜索了很长时间，但没有一个答案是有用的。
我正在制作一个聊天应用程序。当用户单击输入编辑文本时，键盘会显示出来，我想自动滚动到滚动视图的底部，但它无法按预期工作。它似乎认为scrollview的维度与实际不同(可能没有意识到键盘占用了一些空间）
当键盘被隐藏时，按程序滚动到底部的工作方式与预期相同。
这就是我现在拥有的：
在舱单中：
<activity
android:name=".ChatActivity"
android:windowSoftInputMode="adjustResize"
android:screenOrientation="portrait" />在活动中：
messageEditText.setOnFocusChangeListener(new View.OnFocusChangeListener()
{
@Override
public void onFocusChange(View v, boolean hasFocus)
{
if (!hasFocus)
{
HideKeyboard(v);
// ScrollToBottom ();
}
else
{
ScrollToBottom();
messagesScrollView.post(new Runnable() {
@Override
public void run() {
messageEditText.requestFocus();
}
});
ScrollToBottom();
}
}
});
private void ScrollToBottom ()
{
messagesLinearLayout.requestLayout();
messagesLinearLayout.post(new Runnable() {
@Override
public void run() {
messagesScrollView.scrollTo(0, messagesScrollView.getBottom());
}
});
}布局文件：
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
android:background="@color/black"
android:clickable="true"
android:focusableInTouchMode="true"
tools:context=".ChatActivity">
<com.google.android.material.appbar.AppBarLayout
android:id="@+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/Theme.LetsGOFriends.AppBarOverlay"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="66dp"
android:background="#242A2F"
app:contentInsetLeft="0dp"
app:contentInsetRight="0dp"
app:contentInsetStart="0dp"
app:contentInsetStartWithNavigation="0dp"
app:contentInsetEnd="0dp"
app:buttonGravity="center_vertical"
app:popupTheme="@style/Theme.LetsGOFriends.PopupOverlay">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical|start">
<TextView
android:id="@+id/trainerNameChat"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/profilePictureImageView"
android:layout_marginStart="10dp"
android:layout_marginTop="-2dp"
android:layout_toEndOf="@+id/profilePictureImageView"
android:maxLines="1"
android:textSize="14sp"
android:text="LoriMontana"
android:textColor="@color/white" />
<TextView
android:id="@+id/trainerCodeChat"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/profilePictureImageView"
android:layout_alignStart="@+id/trainerNameChat"
android:layout_marginBottom="-2dp"
android:layout_marginStart="0dp"
android:maxLines="1"
android:textSize="14sp"
android:text="0467 0321 3849"
android:textColor="@color/white" />
<com.google.android.material.imageview.ShapeableImageView
android:id="@+id/profilePictureImageView"
android:layout_width="36dp"
android:layout_height="36dp"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginBottom="15dp"
android:layout_marginStart="0dp"
android:layout_marginTop="15dp"
android:padding="1dp"
app:shapeAppearanceOverlay="@style/roundedImageViewRounded"
app:srcCompat="@drawable/ic_default_profile_picture"
app:strokeColor="#484848"
app:strokeWidth="1dp" />
<ImageView
android:id="@+id/languageFlagChatImageView"
android:layout_width="18dp"
android:layout_height="16dp"
android:layout_alignBottom="@+id/trainerNameChat"
android:layout_alignTop="@+id/trainerNameChat"
android:layout_marginBottom="4dp"
android:layout_marginStart="5dp"
android:layout_marginTop="4dp"
android:layout_toEndOf="@+id/trainerNameChat"
tools:srcCompat="@tools:sample/avatars" />
</RelativeLayout>
</androidx.appcompat.widget.Toolbar>
</com.google.android.material.appbar.AppBarLayout>
<ScrollView
android:id="@+id/messagesScrollView"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginBottom="-15dp"
android:focusableInTouchMode="true"
app:layout_constraintBottom_toTopOf="@+id/cardView3"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/appBarLayout">
<LinearLayout
android:id="@+id/messagesLinearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clickable="true"
android:focusableInTouchMode="true"
android:paddingBottom="20dp"
android:paddingTop="5dp"
android:orientation="vertical"
android:focusable="true" />
</ScrollView>
<androidx.cardview.widget.CardView
android:id="@+id/cardView3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
app:cardBackgroundColor="@android:color/transparent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:cardCornerRadius="0dp"
app:cardElevation="0dp">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.google.android.material.textfield.TextInputLayout
android:id="@+id/textInputLayout2"
style="@style/Widget.MaterialComponents.TextInputLayout.FilledBox"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginStart="5dp"
android:layout_marginEnd="5dp"
app:boxBackgroundColor="#242A2F"
app:boxCornerRadiusBottomEnd="15dp"
app:boxCornerRadiusBottomStart="15dp"
app:boxCornerRadiusTopEnd="15dp"
app:boxCornerRadiusTopStart="15dp"
app:boxStrokeColor="@color/teal_700"
app:boxStrokeWidth="0dp"
app:boxStrokeWidthFocused="0dp"
app:endIconContentDescription="Send"
app:endIconDrawable="@drawable/ic_baseline_send_24"
app:endIconMode="custom"
app:endIconTint="@color/white"
app:hintEnabled="false"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<com.google.android.material.textfield.TextInputEditText
android:layout_width="match_parent"
android:layout_height="match_parent"
android:hint="Enter your message.."
android:maxLength="250"
android:paddingBottom="8dp"
android:paddingTop="8dp"
android:textColor="@color/white"
android:textColorHint="#D3D3D3" />
</com.google.android.material.textfield.TextInputLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
</androidx.constraintlayout.widget.ConstraintLayout>我认为布局文件有问题。
1条答案
按热度按时间gcuhipw91#
请尝试使用以下代码向下滚动：