问题
我有一个简单的计算器布局来测试约束布局。我已经成功创建了这个布局:基本布局,但是这个布局的问题在于按钮上有空白区域。所以我想创建一个带权重的垂直链来填满整个屏幕。
我的尝试
于是我想出了这个布局:(见编辑)
但是结果并不是我想要的,它产生了这个布局:我的尝试
所以它似乎忽略了垂直权重。有人有什么想法如何解决吗?
编辑
经过一段时间的努力,我实现了这个更接近目标,但是权重仍然没有起到作用: 新代码:
<android.support.constraint.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:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent">
<View
android:id="@+id/test"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="?attr/colorPrimary"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_weight="5"
app:layout_constraintBottom_toTopOf="@+id/btn_space"
/>
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_space"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text=""
android:textSize="30dp"
app:layout_constraintHorizontal_weight="3"
app:layout_constraintVertical_weight="1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@+id/button155"
app:layout_constraintTop_toBottomOf="@+id/test"
app:layout_constraintBottom_toTopOf="@+id/btn_13"
/>
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/button155"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="AC"
android:textSize="20dp"
app:layout_constraintBaseline_toBaselineOf="@+id/btn_space"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toRightOf="@+id/btn_space"
app:layout_constraintRight_toLeftOf="@+id/btn_clr" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_clr"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="CLR"
android:textSize="20sp"
app:layout_constraintBottom_toBottomOf="@+id/button155"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toRightOf="@+id/button155"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="@+id/button155" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_13"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="13"
android:textSize="30dp"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@+id/btn_14"
app:layout_constraintTop_toBottomOf="@+id/test"
app:layout_constraintBottom_toTopOf="@+id/btn_10" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_14"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="14"
android:textSize="30dp"
app:layout_constraintTop_toTopOf="@+id/btn_13"
app:layout_constraintBottom_toBottomOf="@+id/btn_13"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toRightOf="@+id/btn_13"
app:layout_constraintRight_toLeftOf="@+id/btn_15" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_15"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="15"
android:textSize="30dp"
app:layout_constraintBaseline_toBaselineOf="@+id/btn_13"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintTop_toTopOf="@+id/btn_13"
app:layout_constraintBottom_toBottomOf="@+id/btn_13"
app:layout_constraintLeft_toRightOf="@+id/btn_14"
app:layout_constraintRight_toLeftOf="@+id/btn_very_good" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_very_good"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="Sehr Gut"
android:textSize="20sp"
app:layout_constraintBottom_toBottomOf="@+id/btn_13"
app:layout_constraintHorizontal_weight="2"
app:layout_constraintLeft_toRightOf="@+id/btn_15"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="@+id/btn_13" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_10"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="10"
android:textSize="30dp"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintVertical_weight="1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@+id/btn_11"
app:layout_constraintTop_toBottomOf="@+id/btn_13"
app:layout_constraintBottom_toTopOf="@+id/btn_7" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_11"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="11"
android:textSize="30dp"
app:layout_constraintTop_toTopOf="@+id/btn_10"
app:layout_constraintBottom_toBottomOf="@+id/btn_10"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toRightOf="@+id/btn_10"
app:layout_constraintRight_toLeftOf="@+id/btn_12" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_12"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="12"
android:textSize="30dp"
app:layout_constraintTop_toTopOf="@+id/btn_10"
app:layout_constraintBottom_toBottomOf="@+id/btn_10"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toRightOf="@+id/btn_11"
app:layout_constraintRight_toLeftOf="@+id/btn_good" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_good"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="Gut"
android:textSize="20sp"
app:layout_constraintBottom_toBottomOf="@+id/btn_10"
app:layout_constraintHorizontal_weight="2"
app:layout_constraintLeft_toRightOf="@+id/btn_12"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="@+id/btn_10" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_7"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="7"
android:textSize="30dp"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintVertical_weight="1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@+id/btn_8"
app:layout_constraintTop_toBottomOf="@+id/btn_10"
app:layout_constraintBottom_toTopOf="@+id/btn_4" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_8"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="8"
android:textSize="30dp"
app:layout_constraintTop_toTopOf="@+id/btn_7"
app:layout_constraintBottom_toBottomOf="@+id/btn_7"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toRightOf="@+id/btn_7"
app:layout_constraintRight_toLeftOf="@+id/btn_9" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_9"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="9"
android:textSize="30dp"
app:layout_constraintBaseline_toBaselineOf="@+id/btn_7"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toRightOf="@+id/btn_8"
app:layout_constraintRight_toLeftOf="@+id/btn_satisfying" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_satisfying"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="Befriedigend"
android:textSize="20sp"
app:layout_constraintBottom_toBottomOf="@+id/btn_7"
app:layout_constraintHorizontal_weight="2"
app:layout_constraintLeft_toRightOf="@+id/btn_9"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="@+id/btn_7" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_4"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="4"
android:textSize="30dp"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintVertical_weight="1"
app:layout_constraintRight_toLeftOf="@+id/btn_5"
app:layout_constraintTop_toBottomOf="@+id/btn_7"
app:layout_constraintBottom_toTopOf="@+id/btn_1" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_5"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="5"
android:textSize="30dp"
app:layout_constraintBaseline_toBaselineOf="@+id/btn_4"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toRightOf="@+id/btn_4"
app:layout_constraintRight_toLeftOf="@+id/btn_6" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_6"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="6"
android:textSize="30dp"
app:layout_constraintBaseline_toBaselineOf="@+id/btn_4"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toRightOf="@+id/btn_5"
app:layout_constraintRight_toLeftOf="@+id/txt_sufficient" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/txt_sufficient"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="Ausreichend"
android:textSize="20sp"
app:layout_constraintBottom_toBottomOf="@+id/btn_4"
app:layout_constraintHorizontal_weight="2"
app:layout_constraintLeft_toRightOf="@+id/btn_6"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="@+id/btn_4" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="1"
android:textSize="30dp"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintVertical_weight="1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@+id/btn_2"
app:layout_constraintTop_toBottomOf="@+id/btn_4"
app:layout_constraintBottom_toTopOf="@+id/view_space_before_btn_0" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="2"
android:textSize="30dp"
app:layout_constraintBaseline_toBaselineOf="@+id/btn_1"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toRightOf="@+id/btn_1"
app:layout_constraintRight_toLeftOf="@+id/btn_3" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_3"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="3"
android:textSize="30dp"
app:layout_constraintBaseline_toBaselineOf="@+id/btn_1"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toRightOf="@+id/btn_2"
app:layout_constraintRight_toLeftOf="@+id/txt_inadequate" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/txt_inadequate"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="Mangelhaft"
android:textSize="20sp"
app:layout_constraintBottom_toBottomOf="@+id/btn_1"
app:layout_constraintHorizontal_weight="2"
app:layout_constraintLeft_toRightOf="@+id/btn_3"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="@+id/btn_1" />
<View
android:id="@+id/view_space_before_btn_0"
android:layout_width="0dp"
android:layout_height="30dp"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="1"
android:textSize="30dp"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@+id/btn_0"
app:layout_constraintVertical_weight="1"
app:layout_constraintTop_toBottomOf="@+id/btn_1"
app:layout_constraintBottom_toBottomOf="parent"
/>
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_0"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="0"
android:textSize="30dp"
app:layout_constraintBottom_toBottomOf="@+id/view_space_before_btn_0"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toRightOf="@+id/view_space_before_btn_0"
app:layout_constraintRight_toLeftOf="@+id/btn_result" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/btn_result"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="="
android:textSize="30dp"
app:layout_constraintBottom_toBottomOf="@+id/view_space_before_btn_0"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toRightOf="@+id/btn_0"
app:layout_constraintRight_toLeftOf="@+id/txt_insufficient" />
<com.envidual.gradecalculator.TextViewRoboto
android:id="@+id/txt_insufficient"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="?attr/selectableItemBackgroundBorderless"
android:gravity="center"
android:text="Ungenügend"
android:textSize="20sp"
app:layout_constraintBottom_toBottomOf="@+id/btn_0"
app:layout_constraintHorizontal_weight="2"
app:layout_constraintLeft_toRightOf="@+id/btn_result"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="@+id/btn_0" />