ConstraintLayout的使用

ConstraintLayout的引用，使布局更好适同屏幕不同尺寸.......

简单布局设计：

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"
    tools:context="com.example.dpl.devprofile.MainActivity">

    <ImageView
        android:id="@+id/binner"
        android:layout_width="0dp"
        android:layout_height="150dp"
        android:scaleType="centerCrop"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/devslopesbanner" />

    <ImageView
        android:id="@+id/logo"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="24dp"
        android:layout_marginTop="120dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/devslopesprofilelogo" />

    <TextView
        android:id="@+id/devslopesText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="24dp"
        android:layout_marginTop="24dp"
        android:text="devslopes"
        android:textSize="24sp"
        app:layout_constraintStart_toEndOf="@+id/logo"
        app:layout_constraintTop_toBottomOf="@+id/binner" />

    <ImageView
        android:id="@+id/imageView3"
        android:layout_width="50dp"
        android:layout_height="50dp"
        app:layout_constraintBottom_toBottomOf="@+id/imageView4"
        app:layout_constraintEnd_toStartOf="@+id/imageView4"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintHorizontal_chainStyle="packed"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@+id/imageView4"
        app:srcCompat="@drawable/camerabutton" />

    <ImageView
        android:id="@+id/imageView4"
        android:layout_width="50dp"
        android:layout_height="51dp"
        app:layout_constraintBottom_toBottomOf="@+id/imageView5"
        app:layout_constraintEnd_toStartOf="@+id/imageView5"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toEndOf="@+id/imageView3"
        app:layout_constraintTop_toTopOf="@+id/imageView5"
        app:srcCompat="@drawable/favoritebutton"
        tools:layout_marginLeft="24dp"
        tools:layout_marginRight="24dp" />

    <ImageView
        android:id="@+id/imageView5"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:layout_marginTop="24dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toEndOf="@+id/imageView4"
        app:layout_constraintTop_toBottomOf="@+id/logo"
        app:srcCompat="@drawable/inboxbutton" />

    <android.support.constraint.Guideline
        android:id="@+id/guideline4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintGuide_begin="205dp" />

    <ImageView
        android:id="@+id/imageView14"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginEnd="8dp"
        android:layout_marginTop="32dp"
        android:scaleType="centerCrop"
        app:layout_constraintDimensionRatio="1:1"
        app:layout_constraintEnd_toStartOf="@+id/guideline4"
        app:layout_constraintTop_toBottomOf="@+id/imageView3"
        app:srcCompat="@drawable/dataimage" />

    <ImageView
        android:id="@+id/imageView15"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginStart="8dp"
        android:scaleType="centerCrop"
        app:layout_constraintDimensionRatio="1:1"
        app:layout_constraintStart_toStartOf="@+id/guideline4"
        app:layout_constraintTop_toTopOf="@+id/imageView14"
        app:srcCompat="@drawable/imagesimage" />

    <ImageView
        android:id="@+id/imageView16"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginTop="8dp"
        android:scaleType="centerCrop"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintDimensionRatio="1:1"
        app:layout_constraintEnd_toStartOf="@+id/guideline4"
        app:layout_constraintStart_toStartOf="@+id/imageView14"
        app:layout_constraintTop_toBottomOf="@+id/imageView14"
        app:srcCompat="@drawable/videosimage" />

    <ImageView
        android:id="@+id/imageView17"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginBottom="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:scaleType="centerCrop"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintDimensionRatio="1:1"
        app:layout_constraintEnd_toEndOf="@+id/imageView15"
        app:layout_constraintStart_toStartOf="@+id/guideline4"
        app:layout_constraintTop_toBottomOf="@+id/imageView15"
        app:srcCompat="@drawable/codeimage" />

</android.support.constraint.ConstraintLayout>

源代码：点击打开链接