android 约束布局支持不同的屏幕尺寸
android constrain layout support different screen size
亲爱的，我正在尝试使用百分比约束布局来支持不同的屏幕尺寸，如果我只使用图片或按钮，它可以正常工作，但是当我添加文本时，它不会出现在小屏幕上，即使我将它添加为与中心匹配的父级重力。
我添加了 xml 代码..
如果我可以使用此方法支持不同的屏幕尺寸，你能帮我吗 或者我必须创建不同的 xml 文件。
编辑我
屏幕尺寸为 LDPI API 22 240 × 320: ldpi 22 Android 5.1 (Google APIs) 和 MDPI Small API 22 320 × 480: mdpi 22 Android 5.1 (Google APIs)
布局：
<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"
android:background="@drawable/green_background"
tools:context="com.yaacoach.gymapp.StartExercise">
<android.support.constraint.Guideline
android:id="@+id/guideline16"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.18" />
<android.support.constraint.Guideline
android:id="@+id/guideline36"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.2" />
<android.support.constraint.Guideline
android:id="@+id/guideline37"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.8" />
<android.support.constraint.Guideline
android:id="@+id/guideline38"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.03" />
<android.support.constraint.Guideline
android:id="@+id/guideline40"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.08" />
<android.support.constraint.Guideline
android:id="@+id/guideline41"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.92" />
<android.support.constraint.Guideline
android:id="@+id/guideline42"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.27" />
<Button
android:id="@+id/btn_start"
style="@style/Base.TextAppearance.AppCompat.Medium"
android:gravity="center"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="2dp"
android:background="@drawable/stopwatchstyle"
android:text="start"
app:layout_constraintBottom_toTopOf="@+id/guideline43"
app:layout_constraintEnd_toStartOf="@+id/guideline47"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline39"
app:layout_constraintVertical_bias="0.833" />
<android.support.constraint.Guideline
android:id="@+id/guideline43"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.93" />
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_startExercise_information"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="@+id/guideline39"
app:layout_constraintEnd_toStartOf="@+id/guideline41"
app:layout_constraintStart_toStartOf="@+id/guideline40"
app:layout_constraintTop_toTopOf="@+id/guideline42" />
<android.support.constraint.Guideline
android:id="@+id/guideline39"
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.86" />
<android.support.constraint.Guideline
android:id="@+id/guideline45"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.25" />
<android.support.constraint.ConstraintLayout
android:id="@+id/CL_stopWatch"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@drawable/stopwatchstyle"
android:descendantFocusability="beforeDescendants"
android:focusableInTouchMode="true"
android:foregroundGravity="center"
app:layout_constraintBottom_toTopOf="@+id/guideline45"
app:layout_constraintEnd_toStartOf="@+id/guideline37"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline38"
app:layout_constraintVertical_bias="1.0">
</android.support.constraint.ConstraintLayout>
<Chronometer
android:id="@+id/chronometer2"
style="@android:style/TextAppearance.DeviceDefault.Medium"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:gravity="center"
android:textColor="@color/btnbrainiac"
android:textStyle="bold"
app:layout_constraintBottom_toTopOf="@+id/guideline46"
app:layout_constraintEnd_toStartOf="@+id/guideline37"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline38" />
<android.support.constraint.Guideline
android:id="@+id/guideline46"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.11" />
<android.support.constraint.Guideline
android:id="@+id/guideline47"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.4" />
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_start_exercise_weight_rep"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="@+id/guideline45"
app:layout_constraintEnd_toStartOf="@+id/guideline37"
app:layout_constraintStart_toStartOf="@+id/guideline47"
app:layout_constraintTop_toTopOf="@+id/guideline46" />
<TextView
android:id="@+id/textView2"
style="@android:style/TextAppearance.DeviceDefault.Small"
android:layout_width="0dp"
android:layout_height="0dp"
android:gravity="center"
android:text="@string/Weight"
app:layout_constraintBottom_toTopOf="@+id/guideline16"
app:layout_constraintEnd_toStartOf="@+id/guideline47"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline46" />
<TextView
android:id="@+id/textView4"
style="@android:style/TextAppearance.DeviceDefault.Small"
android:layout_width="0dp"
android:layout_height="0dp"
android:gravity="center"
android:text="@string/repetition"
app:layout_constraintBottom_toTopOf="@+id/guideline45"
app:layout_constraintEnd_toStartOf="@+id/guideline47"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline16" />
<Button
android:id="@+id/btn_StartExercies_Pause"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="2dp"
android:background="@drawable/stopwatchstyle"
android:text="Button"
app:layout_constraintBottom_toTopOf="@+id/guideline43"
app:layout_constraintEnd_toStartOf="@+id/guideline37"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="@+id/guideline47"
app:layout_constraintTop_toTopOf="@+id/guideline39"
app:layout_constraintVertical_bias="0.0" />
屏幕尺寸为
LDPI API 22 240 × 320: ldpi 22 Android 5.1 (Google APIs)
和
MDPI 小 API 22 320 × 480: mdpi 22 Android 5.1 (Google APIs)
<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"
android:background="@drawable/green_background"
tools:context="com.yaacoach.gymapp.StartExercise">
<android.support.constraint.Guideline
android:id="@+id/guideline16"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.18" />
<android.support.constraint.Guideline
android:id="@+id/guideline36"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.2" />
<android.support.constraint.Guideline
android:id="@+id/guideline37"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.8" />
<android.support.constraint.Guideline
android:id="@+id/guideline38"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.03" />
<android.support.constraint.Guideline
android:id="@+id/guideline40"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.08" />
<android.support.constraint.Guideline
android:id="@+id/guideline41"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.92" />
<android.support.constraint.Guideline
android:id="@+id/guideline42"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.27" />
<Button
android:id="@+id/btn_start"
style="@style/Base.TextAppearance.AppCompat.Medium"
android:gravity="center"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="2dp"
android:background="@drawable/stopwatchstyle"
android:text="start"
app:layout_constraintBottom_toTopOf="@+id/guideline43"
app:layout_constraintEnd_toStartOf="@+id/guideline47"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline39"
app:layout_constraintVertical_bias="0.833" />
<android.support.constraint.Guideline
android:id="@+id/guideline43"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.93" />
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_startExercise_information"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="@+id/guideline39"
app:layout_constraintEnd_toStartOf="@+id/guideline41"
app:layout_constraintStart_toStartOf="@+id/guideline40"
app:layout_constraintTop_toTopOf="@+id/guideline42" />
<android.support.constraint.Guideline
android:id="@+id/guideline39"
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.86" />
<android.support.constraint.Guideline
android:id="@+id/guideline45"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.25" />
<android.support.constraint.ConstraintLayout
android:id="@+id/CL_stopWatch"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@drawable/stopwatchstyle"
android:descendantFocusability="beforeDescendants"
android:focusableInTouchMode="true"
android:foregroundGravity="center"
app:layout_constraintBottom_toTopOf="@+id/guideline45"
app:layout_constraintEnd_toStartOf="@+id/guideline37"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline38"
app:layout_constraintVertical_bias="1.0">
</android.support.constraint.ConstraintLayout>
<Chronometer
android:id="@+id/chronometer2"
style="@android:style/TextAppearance.DeviceDefault.Medium"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:gravity="center"
android:textColor="@color/btnbrainiac"
android:textStyle="bold"
app:layout_constraintBottom_toTopOf="@+id/guideline46"
app:layout_constraintEnd_toStartOf="@+id/guideline37"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline38" />
<android.support.constraint.Guideline
android:id="@+id/guideline46"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.11" />
<android.support.constraint.Guideline
android:id="@+id/guideline47"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.4" />
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_start_exercise_weight_rep"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="@+id/guideline45"
app:layout_constraintEnd_toStartOf="@+id/guideline37"
app:layout_constraintStart_toStartOf="@+id/guideline47"
app:layout_constraintTop_toTopOf="@+id/guideline46" />
<TextView
android:id="@+id/textView2"
style="@android:style/TextAppearance.DeviceDefault.Small"
android:layout_width="0dp"
android:layout_height="0dp"
android:gravity="center"
android:text="@string/Weight"
app:layout_constraintBottom_toTopOf="@+id/guideline16"
app:layout_constraintEnd_toStartOf="@+id/guideline47"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline46" />
<TextView
android:id="@+id/textView4"
style="@android:style/TextAppearance.DeviceDefault.Small"
android:layout_width="0dp"
android:layout_height="0dp"
android:gravity="center"
android:text="@string/repetition"
app:layout_constraintBottom_toTopOf="@+id/guideline45"
app:layout_constraintEnd_toStartOf="@+id/guideline47"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline16" />
<Button
android:id="@+id/btn_StartExercies_Pause"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="2dp"
android:background="@drawable/stopwatchstyle"
android:text="Button"
app:layout_constraintBottom_toTopOf="@+id/guideline43"
app:layout_constraintEnd_toStartOf="@+id/guideline37"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="@+id/guideline47"
app:layout_constraintTop_toTopOf="@+id/guideline39"
app:layout_constraintVertical_bias="0.0" />
我在 Android Studio 中粘贴了布局，我看到它渲染正常。
请注意，我替换了颜色和字符串，因为我没有资源文件。
下图是您提到的 LDPI 显示器的布局。
无论如何，我在这里留给您另一种方法，您可以使用更少的指南和更少的约束元素来实现相同的布局。
布局：
<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"
android:background="#00FF00"
>
<android.support.constraint.Guideline
android:id="@+id/glTop"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.03" />
<android.support.constraint.Guideline
android:id="@+id/glBottom"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.93" />
<android.support.constraint.Guideline
android:id="@+id/glLeft"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.08" />
<android.support.constraint.Guideline
android:id="@+id/glRight"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.92" />
<android.support.constraint.Guideline
android:id="@+id/glChronoLeft"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.2" />
<android.support.constraint.Guideline
android:id="@+id/glChronoRight"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.8" />
<LinearLayout
android:id="@+id/chronometerContainer"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintEnd_toStartOf="@+id/glChronoRight"
app:layout_constraintStart_toStartOf="@+id/glChronoLeft"
app:layout_constraintTop_toTopOf="@+id/glTop">
<Chronometer
android:id="@+id/chronometer2"
style="@android:style/TextAppearance.DeviceDefault.Medium"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textColor="000000"
android:textStyle="bold"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="12">
<LinearLayout
android:layout_width="0dp"
android:layout_weight="4"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="#FF0000">
<TextView
android:id="@+id/textView2"
style="@android:style/TextAppearance.DeviceDefault.Small"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Weight" />
<TextView
android:id="@+id/textView4"
style="@android:style/TextAppearance.DeviceDefault.Small"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Repet" />
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_startExercise_information"
android:layout_width="0dp"
android:layout_weight="8"
android:layout_height="match_parent"/>
</LinearLayout>
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_start_exercise_weight_rep"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
app:layout_constraintStart_toEndOf="@+id/glLeft"
app:layout_constraintBottom_toTopOf="@+id/btnContainer"
app:layout_constraintEnd_toStartOf="@+id/glRight"
app:layout_constraintTop_toBottomOf="@+id/chronometerContainer" />
<LinearLayout
android:id="@+id/btnContainer"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="12"
app:layout_constraintStart_toStartOf="@id/glChronoLeft"
app:layout_constraintEnd_toEndOf="@+id/glChronoRight"
app:layout_constraintBottom_toTopOf="@+id/glBottom">
<Button
android:id="@+id/btn_start"
style="@style/Base.TextAppearance.AppCompat.Medium"
android:gravity="center"
android:layout_width="0dp"
android:layout_weight="6"
android:layout_height="wrap_content"
android:padding="5dp"
android:background="#FF0000"
android:layout_margin="1px"
android:text="start" />
<Button
android:id="@+id/btn_StartExercies_Pause"
style="@style/Base.TextAppearance.AppCompat.Medium"
android:layout_width="0dp"
android:layout_weight="6"
android:layout_height="wrap_content"
android:padding="5dp"
android:background="#FF0000"
android:layout_margin="1px"
android:text="Button"
/>
</LinearLayout>
</android.support.constraint.ConstraintLayout>
亲爱的，我正在尝试使用百分比约束布局来支持不同的屏幕尺寸，如果我只使用图片或按钮，它可以正常工作，但是当我添加文本时，它不会出现在小屏幕上，即使我将它添加为与中心匹配的父级重力。
我添加了 xml 代码..
如果我可以使用此方法支持不同的屏幕尺寸，你能帮我吗
编辑我
屏幕尺寸为 LDPI API 22 240 × 320: ldpi 22 Android 5.1 (Google APIs) 和 MDPI Small API 22 320 × 480: mdpi 22 Android 5.1 (Google APIs)
布局：
<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"
android:background="@drawable/green_background"
tools:context="com.yaacoach.gymapp.StartExercise">
<android.support.constraint.Guideline
android:id="@+id/guideline16"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.18" />
<android.support.constraint.Guideline
android:id="@+id/guideline36"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.2" />
<android.support.constraint.Guideline
android:id="@+id/guideline37"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.8" />
<android.support.constraint.Guideline
android:id="@+id/guideline38"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.03" />
<android.support.constraint.Guideline
android:id="@+id/guideline40"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.08" />
<android.support.constraint.Guideline
android:id="@+id/guideline41"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.92" />
<android.support.constraint.Guideline
android:id="@+id/guideline42"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.27" />
<Button
android:id="@+id/btn_start"
style="@style/Base.TextAppearance.AppCompat.Medium"
android:gravity="center"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="2dp"
android:background="@drawable/stopwatchstyle"
android:text="start"
app:layout_constraintBottom_toTopOf="@+id/guideline43"
app:layout_constraintEnd_toStartOf="@+id/guideline47"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline39"
app:layout_constraintVertical_bias="0.833" />
<android.support.constraint.Guideline
android:id="@+id/guideline43"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.93" />
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_startExercise_information"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="@+id/guideline39"
app:layout_constraintEnd_toStartOf="@+id/guideline41"
app:layout_constraintStart_toStartOf="@+id/guideline40"
app:layout_constraintTop_toTopOf="@+id/guideline42" />
<android.support.constraint.Guideline
android:id="@+id/guideline39"
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.86" />
<android.support.constraint.Guideline
android:id="@+id/guideline45"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.25" />
<android.support.constraint.ConstraintLayout
android:id="@+id/CL_stopWatch"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@drawable/stopwatchstyle"
android:descendantFocusability="beforeDescendants"
android:focusableInTouchMode="true"
android:foregroundGravity="center"
app:layout_constraintBottom_toTopOf="@+id/guideline45"
app:layout_constraintEnd_toStartOf="@+id/guideline37"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline38"
app:layout_constraintVertical_bias="1.0">
</android.support.constraint.ConstraintLayout>
<Chronometer
android:id="@+id/chronometer2"
style="@android:style/TextAppearance.DeviceDefault.Medium"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:gravity="center"
android:textColor="@color/btnbrainiac"
android:textStyle="bold"
app:layout_constraintBottom_toTopOf="@+id/guideline46"
app:layout_constraintEnd_toStartOf="@+id/guideline37"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline38" />
<android.support.constraint.Guideline
android:id="@+id/guideline46"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.11" />
<android.support.constraint.Guideline
android:id="@+id/guideline47"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.4" />
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_start_exercise_weight_rep"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="@+id/guideline45"
app:layout_constraintEnd_toStartOf="@+id/guideline37"
app:layout_constraintStart_toStartOf="@+id/guideline47"
app:layout_constraintTop_toTopOf="@+id/guideline46" />
<TextView
android:id="@+id/textView2"
style="@android:style/TextAppearance.DeviceDefault.Small"
android:layout_width="0dp"
android:layout_height="0dp"
android:gravity="center"
android:text="@string/Weight"
app:layout_constraintBottom_toTopOf="@+id/guideline16"
app:layout_constraintEnd_toStartOf="@+id/guideline47"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline46" />
<TextView
android:id="@+id/textView4"
style="@android:style/TextAppearance.DeviceDefault.Small"
android:layout_width="0dp"
android:layout_height="0dp"
android:gravity="center"
android:text="@string/repetition"
app:layout_constraintBottom_toTopOf="@+id/guideline45"
app:layout_constraintEnd_toStartOf="@+id/guideline47"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline16" />
<Button
android:id="@+id/btn_StartExercies_Pause"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="2dp"
android:background="@drawable/stopwatchstyle"
android:text="Button"
app:layout_constraintBottom_toTopOf="@+id/guideline43"
app:layout_constraintEnd_toStartOf="@+id/guideline37"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="@+id/guideline47"
app:layout_constraintTop_toTopOf="@+id/guideline39"
app:layout_constraintVertical_bias="0.0" />
屏幕尺寸为 LDPI API 22 240 × 320: ldpi 22 Android 5.1 (Google APIs) 和 MDPI 小 API 22 320 × 480: mdpi 22 Android 5.1 (Google APIs)
<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"
android:background="@drawable/green_background"
tools:context="com.yaacoach.gymapp.StartExercise">
<android.support.constraint.Guideline
android:id="@+id/guideline16"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.18" />
<android.support.constraint.Guideline
android:id="@+id/guideline36"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.2" />
<android.support.constraint.Guideline
android:id="@+id/guideline37"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.8" />
<android.support.constraint.Guideline
android:id="@+id/guideline38"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.03" />
<android.support.constraint.Guideline
android:id="@+id/guideline40"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.08" />
<android.support.constraint.Guideline
android:id="@+id/guideline41"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.92" />
<android.support.constraint.Guideline
android:id="@+id/guideline42"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.27" />
<Button
android:id="@+id/btn_start"
style="@style/Base.TextAppearance.AppCompat.Medium"
android:gravity="center"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="2dp"
android:background="@drawable/stopwatchstyle"
android:text="start"
app:layout_constraintBottom_toTopOf="@+id/guideline43"
app:layout_constraintEnd_toStartOf="@+id/guideline47"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline39"
app:layout_constraintVertical_bias="0.833" />
<android.support.constraint.Guideline
android:id="@+id/guideline43"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.93" />
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_startExercise_information"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="@+id/guideline39"
app:layout_constraintEnd_toStartOf="@+id/guideline41"
app:layout_constraintStart_toStartOf="@+id/guideline40"
app:layout_constraintTop_toTopOf="@+id/guideline42" />
<android.support.constraint.Guideline
android:id="@+id/guideline39"
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.86" />
<android.support.constraint.Guideline
android:id="@+id/guideline45"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.25" />
<android.support.constraint.ConstraintLayout
android:id="@+id/CL_stopWatch"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@drawable/stopwatchstyle"
android:descendantFocusability="beforeDescendants"
android:focusableInTouchMode="true"
android:foregroundGravity="center"
app:layout_constraintBottom_toTopOf="@+id/guideline45"
app:layout_constraintEnd_toStartOf="@+id/guideline37"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline38"
app:layout_constraintVertical_bias="1.0">
</android.support.constraint.ConstraintLayout>
<Chronometer
android:id="@+id/chronometer2"
style="@android:style/TextAppearance.DeviceDefault.Medium"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:gravity="center"
android:textColor="@color/btnbrainiac"
android:textStyle="bold"
app:layout_constraintBottom_toTopOf="@+id/guideline46"
app:layout_constraintEnd_toStartOf="@+id/guideline37"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline38" />
<android.support.constraint.Guideline
android:id="@+id/guideline46"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.11" />
<android.support.constraint.Guideline
android:id="@+id/guideline47"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.4" />
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_start_exercise_weight_rep"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="@+id/guideline45"
app:layout_constraintEnd_toStartOf="@+id/guideline37"
app:layout_constraintStart_toStartOf="@+id/guideline47"
app:layout_constraintTop_toTopOf="@+id/guideline46" />
<TextView
android:id="@+id/textView2"
style="@android:style/TextAppearance.DeviceDefault.Small"
android:layout_width="0dp"
android:layout_height="0dp"
android:gravity="center"
android:text="@string/Weight"
app:layout_constraintBottom_toTopOf="@+id/guideline16"
app:layout_constraintEnd_toStartOf="@+id/guideline47"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline46" />
<TextView
android:id="@+id/textView4"
style="@android:style/TextAppearance.DeviceDefault.Small"
android:layout_width="0dp"
android:layout_height="0dp"
android:gravity="center"
android:text="@string/repetition"
app:layout_constraintBottom_toTopOf="@+id/guideline45"
app:layout_constraintEnd_toStartOf="@+id/guideline47"
app:layout_constraintStart_toStartOf="@+id/guideline36"
app:layout_constraintTop_toTopOf="@+id/guideline16" />
<Button
android:id="@+id/btn_StartExercies_Pause"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="2dp"
android:background="@drawable/stopwatchstyle"
android:text="Button"
app:layout_constraintBottom_toTopOf="@+id/guideline43"
app:layout_constraintEnd_toStartOf="@+id/guideline37"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="@+id/guideline47"
app:layout_constraintTop_toTopOf="@+id/guideline39"
app:layout_constraintVertical_bias="0.0" />
我在 Android Studio 中粘贴了布局，我看到它渲染正常。 请注意，我替换了颜色和字符串，因为我没有资源文件。
下图是您提到的 LDPI 显示器的布局。
无论如何，我在这里留给您另一种方法，您可以使用更少的指南和更少的约束元素来实现相同的布局。
布局：
<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"
android:background="#00FF00"
>
<android.support.constraint.Guideline
android:id="@+id/glTop"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.03" />
<android.support.constraint.Guideline
android:id="@+id/glBottom"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.93" />
<android.support.constraint.Guideline
android:id="@+id/glLeft"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.08" />
<android.support.constraint.Guideline
android:id="@+id/glRight"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.92" />
<android.support.constraint.Guideline
android:id="@+id/glChronoLeft"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.2" />
<android.support.constraint.Guideline
android:id="@+id/glChronoRight"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.8" />
<LinearLayout
android:id="@+id/chronometerContainer"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintEnd_toStartOf="@+id/glChronoRight"
app:layout_constraintStart_toStartOf="@+id/glChronoLeft"
app:layout_constraintTop_toTopOf="@+id/glTop">
<Chronometer
android:id="@+id/chronometer2"
style="@android:style/TextAppearance.DeviceDefault.Medium"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textColor="000000"
android:textStyle="bold"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="12">
<LinearLayout
android:layout_width="0dp"
android:layout_weight="4"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="#FF0000">
<TextView
android:id="@+id/textView2"
style="@android:style/TextAppearance.DeviceDefault.Small"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Weight" />
<TextView
android:id="@+id/textView4"
style="@android:style/TextAppearance.DeviceDefault.Small"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Repet" />
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_startExercise_information"
android:layout_width="0dp"
android:layout_weight="8"
android:layout_height="match_parent"/>
</LinearLayout>
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_start_exercise_weight_rep"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
app:layout_constraintStart_toEndOf="@+id/glLeft"
app:layout_constraintBottom_toTopOf="@+id/btnContainer"
app:layout_constraintEnd_toStartOf="@+id/glRight"
app:layout_constraintTop_toBottomOf="@+id/chronometerContainer" />
<LinearLayout
android:id="@+id/btnContainer"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="12"
app:layout_constraintStart_toStartOf="@id/glChronoLeft"
app:layout_constraintEnd_toEndOf="@+id/glChronoRight"
app:layout_constraintBottom_toTopOf="@+id/glBottom">
<Button
android:id="@+id/btn_start"
style="@style/Base.TextAppearance.AppCompat.Medium"
android:gravity="center"
android:layout_width="0dp"
android:layout_weight="6"
android:layout_height="wrap_content"
android:padding="5dp"
android:background="#FF0000"
android:layout_margin="1px"
android:text="start" />
<Button
android:id="@+id/btn_StartExercies_Pause"
style="@style/Base.TextAppearance.AppCompat.Medium"
android:layout_width="0dp"
android:layout_weight="6"
android:layout_height="wrap_content"
android:padding="5dp"
android:background="#FF0000"
android:layout_margin="1px"
android:text="Button"
/>
</LinearLayout>
</android.support.constraint.ConstraintLayout>