将 GridLayout 替换为 LinearLayout
Replace GridLayout with LinearLayout
我有一个显示计算器屏幕的 GridLayout。它在许多设备上看起来非常好，但在小显示器甚至一些大显示器上完全失败。有个bug in GridLayout implementation but Google is not working on it. You can see details in my half year old question and an accepted answer:
我试图重新实现我的布局。我从 new ConstraintLayout 开始，运气不好。 LinearLayout 非常接近，但我未能拉伸单个单元格。他们不填写可用 space。当我将宽度从 wrap_content 更改为 match_parent 时，布局完全中断。
所有源代码和示例应用程序可在 https://github.com/literakl/CalcTrouble.
获得
当前的线性布局
GridLayout 工作时
Nexus 5 上的 GridLayout 损坏
Nexus S 上的 GridLayout 损坏
布局源码
<LinearLayout
android:id="@+id/calc_content"
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:background="@color/bg_calc"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<!--Display row-->
<TextView
android:id="@+id/assignment"
android:text="50 + 40 = 90"
style="@style/Formula"
android:focusable="false"
android:layout_width="match_parent"
android:layout_height="@dimen/calc_display_height"
tools:ignore="HardcodedText" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<!-- row with 7-9,+ -->
<LinearLayout
android:layout_height="0dp"
android:layout_weight="1"
android:layout_width="match_parent">
<Button
android:id="@+id/digit7"
android:text="7"
style="@style/KeypadLeftButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/digit8"
android:text="8"
style="@style/KeypadButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/digit9"
android:text="9"
style="@style/KeypadButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/buttonPlus"
android:text="+"
style="@style/KeypadFunctionRightButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
</LinearLayout>
<!--row with 4-6, - -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
>
<Button
android:id="@+id/digit4"
android:text="4"
style="@style/KeypadLeftButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/digit5"
android:text="5"
style="@style/KeypadButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/digit6"
android:text="6"
style="@style/KeypadButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/buttonMinus"
android:text="-"
style="@style/KeypadFunctionRightButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
</LinearLayout>
<!--row with 1-3, * -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
>
<Button
android:id="@+id/digit1"
android:text="1"
style="@style/KeypadLeftButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/digit2"
android:text="2"
style="@style/KeypadButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/digit3"
android:text="3"
style="@style/KeypadButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/buttonMultiply"
android:text="\u22C5"
style="@style/KeypadFunctionRightButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
</LinearLayout>
<!--row with 0, backspace and / -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
>
<Button
android:id="@+id/digit0"
android:text="0"
style="@style/KeypadLeftButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_columnWeight="1"
app:layout_rowWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/buttonBackspace"
android:text="←"
style="@style/KeypadFunctionButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_columnSpan="2"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/buttonDivide"
android:text=":"
style="@style/KeypadFunctionRightButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
</LinearLayout>
</LinearLayout>
<!--row with button submit -->
<Button
android:id="@+id/buttonSubmit"
android:text="@string/action_next_formula"
style="@style/KeypadNextButton"
android:layout_width="match_parent"
android:layout_height="@dimen/calc_next_height"
app:layout_gravity="fill_horizontal"/>
</LinearLayout>
如何获得适用于所有设备的所需外观？
将按钮的 width 更改为 0dp、height 更改为 match_parent 以及 layout_weight 更改为 1，如下例所示排
<!-- row with 7-9,+ -->
<LinearLayout
android:layout_height="0dp"
android:layout_weight="1"
android:weightSum ="4"
android:orientation="horizontal"
android:layout_width="match_parent">
<Button
android:id="@+id/digit7"
android:text="7"
style="@style/KeypadLeftButton"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/digit8"
android:text="8"
style="@style/KeypadButton"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/digit9"
android:text="9"
style="@style/KeypadButton"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/buttonPlus"
android:text="+"
style="@style/KeypadFunctionRightButton"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
tools:ignore="HardcodedText" />
</LinearLayout>
</LinearLayout>
使用 ConstraintLayouts 你可以实现这个：
布局代码：
<?xml version="1.0" encoding="utf-8"?>
<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:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/button_top"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="Button"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_bottom"
android:layout_width="0dp"
android:layout_height="48dp"
android:layout_marginBottom="9dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"/>
<android.support.constraint.ConstraintLayout
android:id="@+id/constraintLayout_content"
android:layout_width="0dp"
android:layout_height="0dp"
android:paddingLeft="6dp"
android:paddingRight="6dp"
app:layout_constraintBottom_toTopOf="@+id/button_bottom"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/button_top">
<android.support.constraint.ConstraintLayout
android:id="@+id/first_row"
android:layout_width="0dp"
android:layout_height="0dp"
android:paddingLeft="6dp"
android:paddingRight="6dp"
app:layout_constraintBottom_toTopOf="@+id/second_row"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
<Button
android:id="@+id/button_first_first"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@+id/button_first_second"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_first_second"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_first_first"
app:layout_constraintRight_toLeftOf="@+id/button_first_third"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_first_third"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_first_second"
app:layout_constraintRight_toLeftOf="@+id/button_first_fourth"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_first_fourth"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_first_third"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
</android.support.constraint.ConstraintLayout>
<android.support.constraint.ConstraintLayout
android:id="@+id/second_row"
android:layout_width="0dp"
android:layout_height="0dp"
android:paddingLeft="6dp"
android:paddingRight="6dp"
app:layout_constraintBottom_toTopOf="@+id/third_row"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/first_row">
<Button
android:id="@+id/button_second_first"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@+id/button_second_second"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_second_second"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_second_first"
app:layout_constraintRight_toLeftOf="@+id/button_second_third"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_second_third"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_second_second"
app:layout_constraintRight_toLeftOf="@+id/button_second_fourth"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_second_fourth"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_second_third"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
</android.support.constraint.ConstraintLayout>
<android.support.constraint.ConstraintLayout
android:id="@+id/third_row"
android:layout_width="0dp"
android:layout_height="0dp"
android:paddingLeft="6dp"
android:paddingRight="6dp"
app:layout_constraintBottom_toTopOf="@+id/fouth_row"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/second_row">
<Button
android:id="@+id/button_third_first"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@+id/button_third_second"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_third_second"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_third_first"
app:layout_constraintRight_toLeftOf="@+id/button_third_third"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_third_third"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_third_second"
app:layout_constraintRight_toLeftOf="@+id/button_third_fourth"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_third_fourth"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_third_third"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
</android.support.constraint.ConstraintLayout>
<android.support.constraint.ConstraintLayout
android:id="@+id/fouth_row"
android:layout_width="0dp"
android:layout_height="0dp"
android:paddingLeft="6dp"
android:paddingRight="6dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/third_row">
<Button
android:id="@+id/button_fourth_first"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@+id/button_fourth_second"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_fourth_second"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toRightOf="@+id/button_fourth_first"
app:layout_constraintRight_toLeftOf="@+id/button_fourth_third"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_fourth_third"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/button_fourth_second"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
</android.support.constraint.ConstraintLayout>
</android.support.constraint.ConstraintLayout>
</android.support.constraint.ConstraintLayout>
我有一个显示计算器屏幕的 GridLayout。它在许多设备上看起来非常好，但在小显示器甚至一些大显示器上完全失败。有个bug in GridLayout implementation but Google is not working on it. You can see details in my half year old question and an accepted answer:
我试图重新实现我的布局。我从 new ConstraintLayout 开始，运气不好。 LinearLayout 非常接近，但我未能拉伸单个单元格。他们不填写可用 space。当我将宽度从 wrap_content 更改为 match_parent 时，布局完全中断。
所有源代码和示例应用程序可在 https://github.com/literakl/CalcTrouble.
获得当前的线性布局
GridLayout 工作时
Nexus 5 上的 GridLayout 损坏
Nexus S 上的 GridLayout 损坏
布局源码
<LinearLayout
android:id="@+id/calc_content"
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:background="@color/bg_calc"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<!--Display row-->
<TextView
android:id="@+id/assignment"
android:text="50 + 40 = 90"
style="@style/Formula"
android:focusable="false"
android:layout_width="match_parent"
android:layout_height="@dimen/calc_display_height"
tools:ignore="HardcodedText" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<!-- row with 7-9,+ -->
<LinearLayout
android:layout_height="0dp"
android:layout_weight="1"
android:layout_width="match_parent">
<Button
android:id="@+id/digit7"
android:text="7"
style="@style/KeypadLeftButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/digit8"
android:text="8"
style="@style/KeypadButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/digit9"
android:text="9"
style="@style/KeypadButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/buttonPlus"
android:text="+"
style="@style/KeypadFunctionRightButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
</LinearLayout>
<!--row with 4-6, - -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
>
<Button
android:id="@+id/digit4"
android:text="4"
style="@style/KeypadLeftButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/digit5"
android:text="5"
style="@style/KeypadButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/digit6"
android:text="6"
style="@style/KeypadButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/buttonMinus"
android:text="-"
style="@style/KeypadFunctionRightButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
</LinearLayout>
<!--row with 1-3, * -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
>
<Button
android:id="@+id/digit1"
android:text="1"
style="@style/KeypadLeftButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/digit2"
android:text="2"
style="@style/KeypadButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/digit3"
android:text="3"
style="@style/KeypadButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/buttonMultiply"
android:text="\u22C5"
style="@style/KeypadFunctionRightButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
</LinearLayout>
<!--row with 0, backspace and / -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
>
<Button
android:id="@+id/digit0"
android:text="0"
style="@style/KeypadLeftButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_columnWeight="1"
app:layout_rowWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/buttonBackspace"
android:text="←"
style="@style/KeypadFunctionButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_columnSpan="2"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/buttonDivide"
android:text=":"
style="@style/KeypadFunctionRightButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_rowWeight="1"
app:layout_columnWeight="1"
tools:ignore="HardcodedText" />
</LinearLayout>
</LinearLayout>
<!--row with button submit -->
<Button
android:id="@+id/buttonSubmit"
android:text="@string/action_next_formula"
style="@style/KeypadNextButton"
android:layout_width="match_parent"
android:layout_height="@dimen/calc_next_height"
app:layout_gravity="fill_horizontal"/>
</LinearLayout>
如何获得适用于所有设备的所需外观？
将按钮的 width 更改为 0dp、height 更改为 match_parent 以及 layout_weight 更改为 1，如下例所示排
<!-- row with 7-9,+ -->
<LinearLayout
android:layout_height="0dp"
android:layout_weight="1"
android:weightSum ="4"
android:orientation="horizontal"
android:layout_width="match_parent">
<Button
android:id="@+id/digit7"
android:text="7"
style="@style/KeypadLeftButton"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/digit8"
android:text="8"
style="@style/KeypadButton"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/digit9"
android:text="9"
style="@style/KeypadButton"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/buttonPlus"
android:text="+"
style="@style/KeypadFunctionRightButton"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
tools:ignore="HardcodedText" />
</LinearLayout>
</LinearLayout>
使用 ConstraintLayouts 你可以实现这个：
布局代码：
<?xml version="1.0" encoding="utf-8"?>
<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:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/button_top"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="Button"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_bottom"
android:layout_width="0dp"
android:layout_height="48dp"
android:layout_marginBottom="9dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"/>
<android.support.constraint.ConstraintLayout
android:id="@+id/constraintLayout_content"
android:layout_width="0dp"
android:layout_height="0dp"
android:paddingLeft="6dp"
android:paddingRight="6dp"
app:layout_constraintBottom_toTopOf="@+id/button_bottom"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/button_top">
<android.support.constraint.ConstraintLayout
android:id="@+id/first_row"
android:layout_width="0dp"
android:layout_height="0dp"
android:paddingLeft="6dp"
android:paddingRight="6dp"
app:layout_constraintBottom_toTopOf="@+id/second_row"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
<Button
android:id="@+id/button_first_first"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@+id/button_first_second"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_first_second"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_first_first"
app:layout_constraintRight_toLeftOf="@+id/button_first_third"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_first_third"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_first_second"
app:layout_constraintRight_toLeftOf="@+id/button_first_fourth"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_first_fourth"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_first_third"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
</android.support.constraint.ConstraintLayout>
<android.support.constraint.ConstraintLayout
android:id="@+id/second_row"
android:layout_width="0dp"
android:layout_height="0dp"
android:paddingLeft="6dp"
android:paddingRight="6dp"
app:layout_constraintBottom_toTopOf="@+id/third_row"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/first_row">
<Button
android:id="@+id/button_second_first"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@+id/button_second_second"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_second_second"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_second_first"
app:layout_constraintRight_toLeftOf="@+id/button_second_third"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_second_third"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_second_second"
app:layout_constraintRight_toLeftOf="@+id/button_second_fourth"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_second_fourth"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_second_third"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
</android.support.constraint.ConstraintLayout>
<android.support.constraint.ConstraintLayout
android:id="@+id/third_row"
android:layout_width="0dp"
android:layout_height="0dp"
android:paddingLeft="6dp"
android:paddingRight="6dp"
app:layout_constraintBottom_toTopOf="@+id/fouth_row"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/second_row">
<Button
android:id="@+id/button_third_first"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@+id/button_third_second"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_third_second"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_third_first"
app:layout_constraintRight_toLeftOf="@+id/button_third_third"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_third_third"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_third_second"
app:layout_constraintRight_toLeftOf="@+id/button_third_fourth"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_third_fourth"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/button_third_third"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
</android.support.constraint.ConstraintLayout>
<android.support.constraint.ConstraintLayout
android:id="@+id/fouth_row"
android:layout_width="0dp"
android:layout_height="0dp"
android:paddingLeft="6dp"
android:paddingRight="6dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/third_row">
<Button
android:id="@+id/button_fourth_first"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@+id/button_fourth_second"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_fourth_second"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toRightOf="@+id/button_fourth_first"
app:layout_constraintRight_toLeftOf="@+id/button_fourth_third"
app:layout_constraintTop_toTopOf="parent"/>
<Button
android:id="@+id/button_fourth_third"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="2dp"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/button_fourth_second"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
</android.support.constraint.ConstraintLayout>
</android.support.constraint.ConstraintLayout>
</android.support.constraint.ConstraintLayout>