在使ImageView垂直填充剩余的间隙时,我遇到了一个小问题。我在屏幕截图上以红色突出显示了它。有人可以看看并提供建议吗?
https://i.stack.imgur.com/PBio1.png
这是关联的XML代码:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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"
tools:context="com.example.android.happybirthday.MainActivity">
<ImageView
android:id="@+id/imageView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:contentDescription="@string/happy_birthday_toyou"
android:scaleType="centerCrop"
android:src="@drawable/invite"
app:layout_constraintBottom_toTopOf="@+id/textViewBottom"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textViewTop" />
<TextView
android:id="@+id/textViewTop"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:padding="8dp"
android:fontFamily="sans-serif"
android:text="@string/happy_birthday_toyou"
android:textColor="@color/colorWhite"
android:background="@color/colorBlack"
android:textSize="@dimen/text_size"
android:gravity="start"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintStart_toStartOf="parent"
/>
<TextView
android:id="@+id/textViewBottom"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="@color/colorBlack"
android:fontFamily="sans-serif"
android:gravity="end"
android:padding="8dp"
android:text="@string/from_me"
android:textColor="@color/colorWhite"
android:textSize="@dimen/text_size"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintStart_toStartOf="parent"
/>
</android.support.constraint.ConstraintLayout>
Run Code Online (Sandbox Code Playgroud) 我有一个小问题layout_constraintVertical_weight,我试图使两个TextView共享分配的区域中可用的垂直空间,但是没有我的手动分配就不会发生。我试过增加0dp高度,但这是行不通的,但是对于宽度,它可以完美地工作。这是我的XML:
<?xml version="1.0" encoding="utf-8"?>
<!-- Layout for a single list item -->
<android.support.constraint.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="@dimen/list_item_height"
android:background="@color/tan_background">
<ImageView
android:id="@+id/image"
android:layout_width="@dimen/list_item_height"
android:layout_height="@dimen/list_item_height"
android:src="@mipmap/ic_launcher" />
<TextView
android:id="@+id/miwok_text_view"
android:layout_width="0dp"
android:layout_height="44dp"
android:background="@color/category_colors"
app:layout_constraintLeft_toRightOf="@+id/image"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_weight="1"
tools:text="text1" />
<TextView
android:id="@+id/default_text_view"
android:layout_width="0dp"
android:layout_height="44dp"
android:background="@color/category_numbers"
app:layout_constraintLeft_toRightOf="@+id/image"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintVertical_weight="1"
tools:text="text2" />
</android.support.constraint.ConstraintLayout>
Run Code Online (Sandbox Code Playgroud)
这是布局外观的img:https : //i.stack.imgur.com/ZOs9y.png