Android开发中的圆角图片+圆形图片，看这一篇就够了！

引言

  最近在苦练Kotlin，一款不错的app（开眼）中的布局吸引了我，也在不懈的努力下通过Kotlin语言完成了开眼首页的RecyclerView多ViewType布局效果，开心！（文末会贴出来）其中用到的图片处理控件很实用，也在日常的项目中会经常用到，因此安利给大家！
  本次就针对Android开发中的图片处理给大家安利两个开源库：CircleImageView（圆形图片）+RoundedImageView（圆角图片）。

本期效果预览

用法

第一步：添加依赖(app下build.gradle)

//圆角图片
    implementation 'com.makeramen:roundedimageview:2.3.0'

//图片圆形处理
    implementation 'de.hdodenhof:circleimageview:3.1.0'

第二步：布局文件使用控件

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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:padding="5dp"
    tools:context=".blog.Case53"
    tools:ignore="MissingConstraints">

    <TextView
        android:id="@+id/title1"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_marginTop="20dp"
        android:background="@color/pink"
        android:gravity="center"
        android:text="默认ImageView样式"
        android:textColor="@color/white"
        android:textSize="18sp"
        app:layout_constraintTop_toTopOf="parent" />

    <ImageView
        android:id="@+id/defaultImage"
        android:layout_width="150dp"
        android:layout_height="120dp"
        android:scaleType="centerCrop"
        android:layout_marginTop="20dp"
        android:src="@drawable/pic1"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toStartOf="@id/defaultImage1"
        app:layout_constraintTop_toBottomOf="@id/title1" />

    <ImageView
        android:id="@+id/defaultImage1"
        android:layout_width="150dp"
        android:layout_height="120dp"
        android:scaleType="centerCrop"
        android:layout_marginTop="20dp"
        app:layout_constraintEnd_toEndOf="parent"
        android:src="@drawable/pic2"
        app:layout_constraintHorizontal_chainStyle="packed"
        app:layout_constraintStart_toEndOf="@id/defaultImage"
        app:layout_constraintTop_toBottomOf="@id/title1" />

    <TextView
        android:id="@+id/title2"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_marginTop="20dp"
        android:background="@color/pink"
        android:gravity="center"
        android:text="RoundedImageView样式"
        android:textColor="@color/white"
        android:textSize="18sp"
        app:layout_constraintTop_toBottomOf="@id/defaultImage" />

    <com.makeramen.roundedimageview.RoundedImageView
        android:id="@+id/roundedImage1"
        android:layout_width="150dp"
        android:layout_height="120dp"
        android:scaleType="centerCrop"
        android:layout_marginTop="20dp"
        app:riv_corner_radius="8dp"
        android:src="@drawable/pic1"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toStartOf="@id/roundedImage2"
        app:layout_constraintTop_toBottomOf="@id/title2" />

    <com.makeramen.roundedimageview.RoundedImageView
        android:id="@+id/roundedImage2"
        android:layout_width="150dp"
        android:layout_height="120dp"
        android:scaleType="centerCrop"
        android:layout_marginTop="20dp"
        app:riv_corner_radius="8dp"
        android:src="@drawable/pic2"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/roundedImage1"
        app:layout_constraintTop_toBottomOf="@id/title2" />

    <TextView
        android:id="@+id/title3"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_marginTop="20dp"
        android:background="@color/pink"
        android:gravity="center"
        android:text="CircleImageView样式"
        android:textColor="@color/white"
        android:textSize="18sp"
        app:layout_constraintTop_toBottomOf="@id/roundedImage1" />

    <de.hdodenhof.circleimageview.CircleImageView
        android:id="@+id/circleImageView1"
        android:layout_width="150dp"
        android:layout_height="120dp"
        android:layout_marginTop="20dp"
        android:src="@drawable/pic1"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toStartOf="@id/circleImageView2"
        app:layout_constraintTop_toBottomOf="@id/title3" />

    <de.hdodenhof.circleimageview.CircleImageView
        android:id="@+id/circleImageView2"
        android:layout_width="150dp"
        android:layout_height="120dp"
        android:layout_marginTop="20dp"
        android:src="@drawable/pic2"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@id/circleImageView1"
        app:layout_constraintTop_toBottomOf="@id/title3" />

</androidx.constraintlayout.widget.ConstraintLayout>

API介绍

• RoundedImageView
  RoundedImageView riv = new RoundedImageView(context);
  riv.setScaleType(ScaleType.CENTER_CROP);
  riv.setCornerRadius((float) 10);
  riv.setBorderWidth((float) 2);
  riv.setBorderColor(Color.DKGRAY);
  riv.mutateBackground(true);
  riv.setImageDrawable(drawable);
  riv.setBackground(backgroundDrawable);
  riv.setOval(true);
  riv.setTileModeX(Shader.TileMode.REPEAT);
  riv.setTileModeY(Shader.TileMode.REPEAT);
• CircleImageView
  app:civ_border_width="2dp"
  app:civ_border_color="#FF000000"

大功告成！

开眼首页

Tips： Kotlin实现，写完整个项目会分享git源码给大家！
没错，这是一个RecyclerView布局实现的～