Glide 圆角图片

1、自定义GlideRoundRect类，继承BitmapTransformation

package com.likebamboo.phoneshow.util;
import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;

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 android.widget.ImageView;

public class GlideRoundRect extends BitmapTransformation {

private static float radius = 0f;

public GlideRoundRect(Context context) {
this(context, 4);
}

public GlideRoundRect(Context context, int dp) {
super(context);
this.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);
}

}

调用资源文件图片，显示成圆角：

iv_heard=(ImageView) findViewById(R.id.iv_heard);
       int resourceId = R.drawable.touxiang;
       Glide.with(this).
       load(resourceId).
       transform(new GlideRoundRect(this,5))
       .into(iv_heard);

加载url图片：

Glide.with(context)
       .load(HttpRequest.PHOTO+prodata.getIcon())
       .centerCrop()
       .transform(new RoundRect(context,15))
       .into(holder.iv_hplist_icon);

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