第一种方案详细使用
时间: 2024-02-28 12:53:58 浏览: 121
好的,下面我详细介绍一下使用权重的方案:
1. 首先,将约束布局的宽高属性都设置为0dp,例如:
```
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/button1"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintWidth_percent="0.5"
app:layout_constraintHeight_percent="0.5"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintVertical_weight="1"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:text="Button 1"/>
<Button
android:id="@+id/button2"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintWidth_percent="0.5"
app:layout_constraintHeight_percent="0.5"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintVertical_weight="1"
app:layout_constraintStart_toEndOf="@id/button1"
app:layout_constraintTop_toTopOf="parent"
android:text="Button 2"/>
<Button
android:id="@+id/button3"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintWidth_percent="0.5"
app:layout_constraintHeight_percent="0.5"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintVertical_weight="1"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/button1"
android:text="Button 3"/>
<Button
android:id="@+id/button4"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintWidth_percent="0.5"
app:layout_constraintHeight_percent="0.5"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintVertical_weight="1"
app:layout_constraintStart_toEndOf="@id/button3"
app:layout_constraintTop_toBottomOf="@id/button2"
android:text="Button 4"/>
</androidx.constraintlayout.widget.ConstraintLayout>
```
2. 在子控件中使用app:layout_constraintHorizontal_weight和app:layout_constraintVertical_weight属性来设置权重,例如:
```
app:layout_constraintHorizontal_weight="1"
app:layout_constraintVertical_weight="1"
```
这样每个子控件的宽高比例就会根据权重自动平分布局。在上面的例子中,每个子控件的宽高比例都是1:1。
希望这个方案能够解决你的问题。