android Glide3.7 圆角图片

导入

implementation 'com.github.bumptech.glide:glide:3.7.0'

样式类

import android.content.Context;import android.content.res.Resources;import android.graphics.Bitmap;import android.graphics.BitmapShader;import android.graphics.Canvas;import android.graphics.Paint;import android.graphics.RectF;import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;public class GlideRoundTransform extends BitmapTransformation {    private static float radius = 0f;    /**     * 构造函数 默认圆角半径 4dp     *     * @param context Context     */    public GlideRoundTransform(Context context) {        this(context, 4);    }    /**     * 构造函数     *     * @param context Context     * @param dp 圆角半径     */    public GlideRoundTransform(Context context, int dp) {        super(context);        radius = Resources.getSystem().getDisplayMetrics().density * dp;    }    @Override    protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {        return roundCrop(pool, toTransform);    }    private static Bitmap roundCrop(BitmapPool pool, Bitmap source) {        if (source == null) return null;        Bitmap result = pool.get(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);        if (result == null) {            result = Bitmap.createBitmap(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);        }        Canvas canvas = new Canvas(result);        Paint paint = new Paint();        paint.setShader(new BitmapShader(source, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));        paint.setAntiAlias(true);        RectF rectF = new RectF(0f, 0f, source.getWidth(), source.getHeight());        canvas.drawRoundRect(rectF, radius, radius, paint);        return result;    }    @Override    public String getId() {        return getClass().getName() + Math.round(radius);    }}

使用

Glide.with(context)                    .load(url)                    .transform(new CenterCrop(context),new GlideRoundTransform(context))                    .diskCacheStrategy(DiskCacheStrategy.ALL)                    .placeholder(R.mipmap.ic_launcher)                    .dontAnimate()                    .crossFade()                    .into(ImageView);

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