ConstraintLayout 平分布局

<?xml version="1.0" encoding="utf-8"?> < xmlns:android="/apk/res/android" xmlns:app="/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <Button android:id="@+id/bt_a" android:layout_width="0dp" android:layout_height="wrap_content" android:text="scroller_scroll" android:textSize="12dp" app:layout_constraintBottom_toTopOf="@+id/button3" app:layout_constraintHorizontal_weight="1" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toLeftOf="@+id/bt_b"/> <Button android:id="@+id/bt_b" android:layout_width="0dp" android:layout_height="wrap_content" android:text="scroller_fling" android:textSize="12dp" app:layout_constraintBottom_toTopOf="@+id/button3" app:layout_constraintHorizontal_weight="1" app:layout_constraintLeft_toRightOf="@+id/bt_a" app:layout_constraintRight_toLeftOf="@+id/bt_c"/> <Button android:id="@+id/bt_c" android:layout_width="0dp" android:layout_height="wrap_content" android:text="over_scroll" android:textSize="12dp" app:layout_constraintBottom_toTopOf="@+id/button3" app:layout_constraintHorizontal_weight="1" app:layout_constraintLeft_toRightOf="@+id/bt_b" app:layout_constraintRight_toRightOf="@+id/bt_d"/> <Button android:id="@+id/bt_d" android:layout_width="0dp" android:layout_height="wrap_content" android:text="overs_fling" android:textSize="12dp" app:layout_constraintBottom_toTopOf="@+id/button3" app:layout_constraintHorizontal_weight="1" app:layout_constraintLeft_toRightOf="@+id/bt_c" app:layout_constraintRight_toRightOf="parent"/> <Button android:id="@+id/button3" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_marginEnd="8dp" android:layout_marginStart="8dp" android:layout_marginTop="8dp" android:text="Button" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" /> </> 复制代码