Android studio ConstraintLayout大小调整问题 _CONSTRAINT

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我在android Studio中还很陌生，我遇到了ConstraintLayout的问题。即，我正在尝试使我的应用程序完全响应，并且在将组件的宽度完美地调整为任何屏幕尺寸的同时，我不知道如何以相同的方式调整高度。相反，我的布局垂直离开了屏幕。

< ?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" tools:context="com.skorupinski.lunchtime.LoginActivity"> < androidx.constraintlayout.widget.ConstraintLayout android:id="@+id/info_box" android:layout_width="match_parent" android:layout_height="254dp" android:background="@drawable/gradient_bg" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintBottom_toTopOf="@+id/login_form" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent"> < ImageButton android:id="@+id/back_button" android:layout_width="45dp" android:layout_height="45dp" android:background="@drawable/back_arrow3" android:contentDescription="back_arrow" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintHorizontal_bias="0.005" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" app:layout_constraintVertical_bias="0.013" /> < ImageView android:layout_width="match_parent" android:layout_height="match_parent" android:layout_marginLeft="133dp" android:layout_marginTop="64dp" android:layout_marginRight="133dp" android:layout_marginBottom="64dp" android:src="https://www.songbingjia.com/android/@drawable/logo" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintHorizontal_bias="0.498" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" app:layout_constraintVertical_bias="0.593" /> < /androidx.constraintlayout.widget.ConstraintLayout> < androidx.constraintlayout.widget.ConstraintLayout android:id="@+id/login_form" android:layout_width="match_parent" android:layout_height="478dp" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintHorizontal_bias="1.0" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toBottomOf="@+id/info_box" app:layout_constraintVertical_bias="0.0"> < EditText android:id="@+id/login_input" android:layout_width="match_parent" android:layout_height="45dp" android:layout_marginLeft="49dp" android:layout_marginRight="49dp" android:layout_marginBottom="20dp" app:layout_constraintBottom_toTopOf="parent" app:layout_constraintHorizontal_bias="0.491" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toBottomOf="parent" app:layout_constraintVertical_bias="0.779" /> < EditText android:id="@+id/password_input" android:layout_width="match_parent" android:layout_height="45dp" android:layout_marginLeft="49dp" android:layout_marginRight="49dp" app:layout_constraintBottom_toTopOf="parent" app:layout_constraintHorizontal_bias="0.491" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toBottomOf="parent" app:layout_constraintVertical_bias="0.577" /> < TextView android:id="@+id/login_input_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:fontFamily="@font/font" android:text="E-mail" android:textColor="#000" android:textSize="20sp" app:layout_constraintBottom_toTopOf="@+id/login_input" app:layout_constraintHorizontal_bias="0.14" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" app:layout_constraintVertical_bias="1.0" /> < TextView android:id="@+id/password_input_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:fontFamily="@font/font" android:text="Has?o" android:textColor="#000" android:textSize="20sp" app:layout_constraintBottom_toTopOf="@+id/password_input" app:layout_constraintHorizontal_bias="0.136" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" app:layout_constraintVertical_bias="1.0" /> < Button android:layout_width="match_parent" android:layout_height="62dp" android:layout_marginLeft="49dp" android:layout_marginRight="49dp" android:background="@drawable/round_gradient_button" android:fontFamily="@font/font" android:text="Zaloguj si?" android:textColor="#000" android:textSize="20sp" app:layout_constraintBottom_toTopOf="parent" app:layout_constraintHorizontal_bias="0.497" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toBottomOf="parent" app:layout_constraintVertical_bias="0.341" /> < /androidx.constraintlayout.widget.ConstraintLayout> < /androidx.constraintlayout.widget.ConstraintLayout>

我希望布局完全适合任何屏幕尺寸。
答案我认为您的约束与xml文件中的视图未正确连接。
尝试一下，我已经修改了您的xml代码。检查一下，让我知道。

< ?xml version="1.0" encoding="utf-8"?> < androidx.core.widget.NestedScrollView 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"> < androidx.constraintlayout.widget.ConstraintLayout android:layout_width="match_parent" android:layout_height="match_parent"> < androidx.constraintlayout.widget.ConstraintLayout android:id="@+id/info_box" android:layout_width="match_parent" android:layout_height="254dp" android:background="@color/colorAccent" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintBottom_toTopOf="@+id/login_form" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent"> < ImageButton android:id="@+id/back_button" android:layout_width="45dp" android:layout_height="45dp" android:layout_marginLeft="8dp" android:layout_marginTop="16dp" android:background="@drawable/ic_arrow_back_black_24dp" android:contentDescription="back_arrow" android:tint="#FFFFFF" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintHorizontal_bias="0.005" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" app:layout_constraintVertical_bias="0.013" /> < ImageView android:layout_width="match_parent" android:layout_height="match_parent" android:layout_marginStart="64dp" android:layout_marginLeft="64dp" android:layout_marginTop="64dp" android:layout_marginEnd="64dp" android:layout_marginRight="64dp" android:layout_marginBottom="64dp" android:src="https://www.songbingjia.com/android/@drawable/ic_launcher_foreground" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintHorizontal_bias="0.498" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" app:layout_constraintVertical_bias="0.593" /> < /androidx.constraintlayout.widget.ConstraintLayout> < androidx.constraintlayout.widget.ConstraintLayout android:id="@+id/login_form" android:layout_width="match_parent" android:layout_height="478dp" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintHorizontal_bias="1.0" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toBottomOf="@+id/info_box" app:layout_constraintVertical_bias="0.0"> < EditText android:id="@+id/login_input" android:layout_width="match_parent" android:layout_height="45dp" android:layout_marginStart="49dp" android:layout_marginLeft="49dp" android:layout_marginTop="60dp" android:layout_marginEnd="49dp" android:layout_marginRight="49dp" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" /> < EditText android:id="@+id/password_input" android:layout_width="match_parent" android:layout_height="45dp" android:layout_marginStart="49dp" android:layout_marginLeft="49dp" android:layout_marginTop="44dp" android:layout_marginEnd="49dp" android:layout_marginRight="49dp" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@+id/login_input" /> < TextView android:id="@+id/login_input_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="E-mail" android:textColor="#000" android:textSize="20sp" app:layout_constraintBottom_toTopOf="@+id/login_input" app:layout_constraintHorizontal_bias="0.14" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" app:layout_constraintVertical_bias="1.0" /> < TextView android:id="@+id/password_input_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Has?o" android:textColor="#000" android:textSize="20sp" app:layout_constraintBottom_toTopOf="@+id/password_input" app:layout_constraintHorizontal_bias="0.136" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" app:layout_constraintVertical_bias="1.0" /> < Button android:layout_width="match_parent" android:layout_height="62dp" android:layout_marginStart="49dp" android:layout_marginLeft="49dp" android:layout_marginTop="60dp" android:layout_marginEnd="49dp" android:layout_marginRight="49dp" android:text="Zaloguj si?" android:textColor="#000" android:textSize="20sp" app:layout_constraintEnd_toEndOf="@+id/password_input" app:layout_constraintStart_toStartOf="@+id/password_input" app:layout_constraintTop_toBottomOf="@+id/password_input" /> < /androidx.constraintlayout.widget.ConstraintLayout> < /androidx.constraintlayout.widget.ConstraintLayout> < /androidx.core.widget.NestedScrollView>

快乐编码。
另一答案【Android studio ConstraintLayout大小调整问题】考虑使用ScrollView元素，但其中包含ConstraintLayout元素，我建议至少在必要时使用单个ConstraintLayout。刚开始使用ConstraintLayout时，我使用了this，它非常有用。