Android描边外框stroke边线、rotate旋转、circle圆形图的简洁通用方案，基于Glide与ShapeableImageView，Kotlin
利用ShapeableImageView专门处理圆形和外框边线的特性，通过Glide加载图片装载到ShapeableImageView。注意，因为要描边，在xml定义ShapeableImageView时候，padding值与stroke值要保持一直，否则，圆图会在某些边缘地方被切边。
旋转的话，可以在上层Kotlin代码设置rotation（动态设置，灵活），旋转ShapeableImageView；也可以在xml里面写死rotation值（静态配置，不灵活）。
ShapeableImageView通过配置shapeAppearance改造成圆形图。
XML
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<com.google.android.material.imageview.ShapeableImageView
android:id="@+id/image1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="@drawable/ic_launcher_background"
android:padding="30px"
android:src="@drawable/ic_launcher_foreground"
app:shapeAppearance="@style/rounded_style"
app:strokeColor="@android:color/holo_red_dark"
app:strokeWidth="30px" />
<com.google.android.material.imageview.ShapeableImageView
android:id="@+id/image2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="@drawable/ic_launcher_background"
android:padding="30px"
android:src="@drawable/ic_launcher_foreground"
app:shapeAppearance="@style/rounded_style"
app:strokeColor="@android:color/holo_red_dark"
app:strokeWidth="30px" />
<com.google.android.material.imageview.ShapeableImageView
android:id="@+id/image3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="@drawable/ic_launcher_background"
android:padding="30px"
android:src="@mipmap/pic1"
app:shapeAppearance="@style/rounded_style"
app:strokeColor="@android:color/holo_red_dark"
app:strokeWidth="30px" />
<com.google.android.material.imageview.ShapeableImageView
android:id="@+id/image4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="@drawable/ic_launcher_background"
android:padding="30px"
android:rotation="-30"
android:src="@mipmap/pic1"
app:shapeAppearance="@style/rounded_style"
app:strokeColor="@android:color/holo_red_dark"
app:strokeWidth="30px" />
<com.google.android.material.imageview.ShapeableImageView
android:id="@+id/image5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="@drawable/ic_launcher_background"
android:padding="30px"
android:rotation="-30"
android:scaleType="centerCrop"
android:src="@mipmap/pic1"
app:shapeAppearance="@style/rounded_style"
app:strokeColor="@android:color/holo_red_dark"
app:strokeWidth="30px" />
</LinearLayout>styles.xml:
XML
<?xml version="1.0" encoding="utf-8"?>
<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
<style name="rounded_style">
<item name="cornerFamily">rounded</item>
<item name="cornerSize">50%</item>
</style>
</resources>
Kotlin
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import com.bumptech.glide.load.resource.bitmap.CenterCrop
import com.google.android.material.imageview.ShapeableImageView
class MainActivity : AppCompatActivity() {
companion object {
const val DEGREE = -60
const val SIZE = 500
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val iv1 = findViewById<ShapeableImageView>(R.id.image1)
GlideApp.with(this)
.load(R.mipmap.pic1)
.transform(CenterCrop())
.error(android.R.drawable.stat_notify_error)
.override(SIZE)
.into(iv1)
val iv2 = findViewById<ShapeableImageView>(R.id.image2)
iv2.rotation = DEGREE.toFloat()
GlideApp.with(this)
.load(R.mipmap.pic1)
.transform(CenterCrop())
.error(android.R.drawable.stat_notify_error)
.override(SIZE)
.into(iv2)
}
}