Android开发,用Kotlin语言。有一个layout文件如下:
<?xml version="1.0" encoding="utf-8"?><androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/loginLayout" xmlns:app="http://schemas.android.com/apk/res-auto">
<TextView
android:id="@+id/accountLabel"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:textSize="18sp"
android:text="Account:"
app:layout_constraintEnd_toStartOf="@+id/accountEdit"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.1"
android:layout_marginEnd="8dp"
android:layout_marginTop="16dp"/>
<EditText
android:id="@+id/accountEdit"
android:layout_width="0dp"
android:layout_height="48dp"
android:layout_marginTop="16dp"
android:hint="Enter your account"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@+id/accountLabel"
app:layout_constraintTop_toTopOf="@+id/accountLabel"
app:layout_constraintHorizontal_bias="0"
android:layout_marginStart="8dp"/>
<TextView
android:id="@+id/passwordLabel"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:textSize="18sp"
android:text="Password:"
app:layout_constraintEnd_toStartOf="@+id/passwordEdit"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/accountEdit"
app:layout_constraintVertical_bias="0.1"
android:layout_marginEnd="8dp"
android:layout_marginTop="16dp"/>
<EditText
android:id="@+id/passwordEdit"
android:layout_width="0dp"
android:layout_height="48dp"
android:layout_marginTop="16dp"
android:inputType="textPassword"
android:hint="Enter your password"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@+id/passwordLabel"
app:layout_constraintTop_toTopOf="@+id/passwordLabel"
app:layout_constraintHorizontal_bias="0"
android:layout_marginStart="8dp"/>
</androidx.constraintlayout.widget.ConstraintLayout>
要求accountLabel和accountEdit要等高,passwordLabel和passwordEdit要等高。请帮忙调整一下。
要使 TextView
和 EditText
等高,可以使用 ConstraintLayout
的 layout_constraintHeight_default
属性,将其设置为 wrap
。这样可以确保两个控件的高度相同。以下是调整后的布局文件:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/loginLayout"
xmlns:app="http://schemas.android.com/apk/res-auto">
<TextView
android:id="@+id/accountLabel"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:textSize="18sp"
android:text="Account:"
app:layout_constraintEnd_toStartOf="@+id/accountEdit"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.1"
android:layout_marginEnd="8dp"
android:layout_marginTop="16dp"
app:layout_constraintHeight_default="wrap"/>
<EditText
android:id="@+id/accountEdit"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="16dp"
android:hint="Enter your account"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@+id/accountLabel"
app:layout_constraintTop_toTopOf="@+id/accountLabel"
app:layout_constraintBottom_toBottomOf="@+id/accountLabel"
app:layout_constraintHorizontal_bias="0"
android:layout_marginStart="8dp"
app:layout_constraintHeight_default="wrap"/>
<TextView
android:id="@+id/passwordLabel"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:textSize="18sp"
android:text="Password:"
app:layout_constraintEnd_toStartOf="@+id/passwordEdit"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/accountEdit"
app:layout_constraintVertical_bias="0.1"
android:layout_marginEnd="8dp"
android:layout_marginTop="16dp"
app:layout_constraintHeight_default="wrap"/>
<EditText
android:id="@+id/passwordEdit"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="16dp"
android:inputType="textPassword"
android:hint="Enter your password"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@+id/passwordLabel"
app:layout_constraintTop_toTopOf="@+id/passwordLabel"
app:layout_constraintBottom_toBottomOf="@+id/passwordLabel"
app:layout_constraintHorizontal_bias="0"
android:layout_marginStart="8dp"
app:layout_constraintHeight_default="wrap"/>
</androidx.constraintlayout.widget.ConstraintLayout>
在这个布局中,TextView
和 EditText
的高度都设置为 wrap_content
,并且通过 app:layout_constraintHeight_default="wrap"
属性确保它们的高度相同。这样可以确保 accountLabel
和 accountEdit
以及 passwordLabel
和 passwordEdit
等高。