Android Glide transform圆形图CircleCrop动态代码描边绘制外框线并rotateImage旋转，Kotlin

快来打我* 2024-02-19 10:11 42阅读 0赞

### Android Glide transform圆形图CircleCrop动态代码描边绘制外框线并rotateImage旋转，Kotlin ###

![018a02286a1145d6bb3c4b79cce26374.png][]

<?xml version="1.0" encoding="utf-8"?>
    <FrameLayout 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">
    
        <ImageView
            android:id="@+id/image"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:padding="2px"
            android:background="@drawable/ic_launcher_background"
            android:src="@drawable/ic_launcher_foreground" />
    
    </FrameLayout>

注意，要用padding而不是margin，padding的值2px和kotlin代码里面的描边线宽度stroke一直。

import android.graphics.Bitmap
    import android.graphics.Canvas
    import android.graphics.Color
    import android.graphics.Paint
    import android.os.Bundle
    import android.widget.ImageView
    import androidx.appcompat.app.AppCompatActivity
    import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool
    import com.bumptech.glide.load.resource.bitmap.CenterCrop
    import com.bumptech.glide.load.resource.bitmap.CircleCrop
    import com.bumptech.glide.load.resource.bitmap.TransformationUtils
    
    
    class MainActivity : AppCompatActivity() {
        companion object {
            const val SIZE = 200
            const val STROKE_WIDTH = 2F //描边宽度为2px
        }
    
        override fun onCreate(savedInstanceState: Bundle?) {
            super.onCreate(savedInstanceState)
            setContentView(R.layout.activity_main)
    
            val image = findViewById<ImageView>(R.id.image)
    
            GlideApp.with(this)
                .load(R.mipmap.pic4)
                .transform(CenterCrop(), MyCircleCrop())
                .error(android.R.drawable.stat_notify_error)
                .override(SIZE)
                .into(image)
        }
    
        class MyCircleCrop : CircleCrop() {
            override fun transform(
                pool: BitmapPool,
                toTransform: Bitmap,
                outWidth: Int,
                outHeight: Int
            ): Bitmap {
                val bmp = TransformationUtils.circleCrop(pool, toTransform, outWidth, outHeight)
    
                val p = Paint()
                p.isAntiAlias = true
                p.style = Paint.Style.STROKE //描边
                p.color = Color.RED
                p.strokeWidth = STROKE_WIDTH
    
                val cv = Canvas(bmp)
                cv.drawCircle(
                    (outWidth / 2).toFloat(),
                    (outHeight / 2).toFloat(),
    
                    //半径取宽和高最小的。同时减去描边占掉的宽度，否则会把边画到外面。
                    minOf(outWidth, outHeight) / 2 - STROKE_WIDTH,
    
                    p
                )
    
                return TransformationUtils.rotateImage(bmp, -90) //逆时针旋转90度。
            }
        }
    }

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[018a02286a1145d6bb3c4b79cce26374.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/02/19/8c09d2078be541b9abd86958aa8d4ced.png
[favicon32.ico]: https://image.dandelioncloud.cn/pgy_files/images/2024/02/19/dc6fdce9e9b44ba8912874602a804119.png
[Android transform_rotate_roundedCorners_Kotlin-CSDN_63_369_1.2w_ implementation _com.github.bumptech.glide_glide_4.9.0_ annotationProcessor _com.github.bumptech.glide_compiler_4.9.0_Android_Glide_android glide_-CSDN_Glide transform CircleCrop_Kotlin_favicon32.ico_https_blog.csdn.net_zhangphil_article_details_134149777]: https://blog.csdn.net/zhangphil/article/details/134149777
[Glide transform CircleCrop_Kotlin-CSDN_383_1.2w_ implementation _com.github.bumptech.glide_glide_4.9.0_ annotationProcessor _com.github.bumptech.glide_compiler_4.9.0_Android_Glide_android glide_-CSDN_Glide transform CircleCrop_Kotlin_favicon32.ico_https_blog.csdn.net_zhangphil_article_details_134147774]: https://blog.csdn.net/zhangphil/article/details/134147774