将原有项目图片加载框架picasso改为glide,关于picasso和glide文档就自行查阅相关资料

显示 图片 例子

Glide.with(mContext).load(imageUrl).placeholder(defaultDrawable)
.error(defaultDrawable).dontAnimate().into(view) 显示正常

因为项目中头像是圆形利用glide实用圆头像代码如下

Glide.with(mContext)
.load(imageUrl)
.dontAnimate()
//.transform(new GlideRoundTransform(mContext,2))//方形圆解
.transform(new GlideCircleTransform2(mContext))//圆形
.into(view);

GlideCircleTransform2代码

public class GlideCircleTransform2 extends BitmapTransformation {
     public GlideCircleTransform2(Context context) {
            super(context);
        }

        @Override protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
            return circleCrop(pool, toTransform);
        }

        private static Bitmap circleCrop(BitmapPool pool, Bitmap source) {
            if (source == null) return null;

            int size = Math.min(source.getWidth(), source.getHeight());
            int x = (source.getWidth() - size) / 2;
            int y = (source.getHeight() - size) / 2;

            // TODO this could be acquired from the pool too
            Bitmap squared = Bitmap.createBitmap(source, x, y, size, size);

            Bitmap result = pool.get(size, size, Bitmap.Config.ARGB_8888);
            if (result == null) {
                result = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
            }

            Canvas canvas = new Canvas(result);
            Paint paint = new Paint();
            paint.setShader(new BitmapShader(squared, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
            paint.setAntiAlias(true);
            float r = size / 2f;
            canvas.drawCircle(r, r, r, paint);
            return result;
        }

        @Override public String getId() {
            return getClass().getName();
        }
}
View Code

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