我已经构建了一个BMI计算器应用。我的文本视图,编辑文本和按钮在不同屏幕尺寸下的对齐方式不同。如何对齐使其适合所有屏幕?
我已经在StackOverflow中尝试了先前的答案,但是在新版本的android studio中删除了这些属性,并且也阅读了Google文档,但无法理解...抱歉!
我的XML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="#5864"
tools:context=".MainActivity">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="162dp"
android:layout_marginLeft="162dp"
android:layout_marginTop="60dp"
android:layout_marginEnd="161dp"
android:layout_marginRight="161dp"
android:text="@string/bmi_calculator"
android:textSize="30sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.436"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<EditText
android:id="@+id/userHeight"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="63dp"
android:ems="10"
app:layout_constraintTop_toBottomOf="@+id/textView"
tools:layout_editor_absoluteX="107dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
android:importantForAutofill="no"
android:hint="@string/enter_height"
android:gravity="center"
android:inputType="numberDecimal"/>
<EditText
android:id="@+id/userWeight"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="66dp"
android:ems="10"
android:inputType="numberDecimal"
app:layout_constraintTop_toBottomOf="@+id/userHeight"
tools:layout_editor_absoluteX="106dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
android:importantForAutofill="no"
android:hint="@string/enter_weight"
android:gravity="center"/>
<TextView
android:id="@+id/userBMI"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="32dp"
android:hint="@string/your_bmi_will_be_displayed_here"
app:layout_constraintTop_toBottomOf="@+id/userWeight"
tools:layout_editor_absoluteX="107dp"
android:textSize="18sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
android:gravity="center_horizontal"/>
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="80dp"
android:onClick="buttonClicked"
android:text="@string/calculate_bmi"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/userBMI"
android:layout_alignParentBottom="true"
android:textSize="20sp"
/>
</androidx.constraintlayout.widget.ConstraintLayout>
我正在自己学习android,请提供一些帮助。我添加了显示我的应用在两种不同屏幕尺寸下的外观的图像。
您必须创建“链”->使用app:layout_constraintBottom_toTopOf将组件的所有底部限制为元素底部的顶部
<?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="#5864">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/bmi_calculator"
android:textSize="30sp"
app:layout_constraintBottom_toTopOf="@+id/userHeight"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<EditText
android:id="@+id/userHeight"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:gravity="center"
android:hint="@string/enter_height"
android:importantForAutofill="no"
android:inputType="numberDecimal"
app:layout_constraintBottom_toTopOf="@+id/userWeight"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textView" />
<EditText
android:id="@+id/userWeight"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:gravity="center"
android:hint="@string/enter_weight"
android:importantForAutofill="no"
android:inputType="numberDecimal"
app:layout_constraintBottom_toTopOf="@+id/userBMI"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/userHeight" />
<TextView
android:id="@+id/userBMI"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:hint="@string/your_bmi_will_be_displayed_here"
android:textSize="18sp"
app:layout_constraintBottom_toTopOf="@+id/button"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/userWeight" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:onClick="buttonClicked"
android:text="@string/calculate_bmi"
android:textSize="20sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/userBMI" />
</androidx.constraintlayout.widget.ConstraintLayout>