Anroid笔记：Android图片加载框架Glide用法

//本地视频
String filePath = "/storage/emulated/0/Pictures/example.mp4";
Glide.with( context ).load( Uri.fromFile( new File( filePath ) ) ).into(imageViewGifAsBitmap );
//本地图片
 String filePath = "yourfliename";
 File file = new File(filePath, "ad.jpg");
 //加载图片
                                Glide.with(mContext).load(file).into(ivCircle);

Glide.with( context ).load(imageUrl).skipMemoryCache(true).into(imageViewInternet );//跳过内存缓存
Glide.with( context ).load(imageUrl).diskCacheStrategy(DiskCacheStrategy.NONE).into( imageViewInternet );//跳过硬盘缓存
    DiskCacheStrategy.NONE 什么都不缓存
    DiskCacheStrategy.SOURCE 仅仅只缓存原来的全分辨率的图像
    DiskCacheStrategy.RESULT 仅仅缓存最终的图像，即降低分辨率后的（或者是转换后的）
    DiskCacheStrategy.ALL 缓存所有版本的图像（默认行为）

Glide.with(mContext)
    .load(url) 
    .placeholder(R.drawable.loading_spinner)
    .into(new SimpleTarget<Bitmap>(width, height) {
        @Override 
        public void onResourceReady(Bitmap bitmap, GlideAnimation anim) {
            // setImageBitmap(bitmap) on CircleImageView 
        } 
    };

//圆形图片
public class GlideCircleTransform extends BitmapTransformation {
    public GlideCircleTransform(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();
    }
}
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//圆角图片
public class GlideRoundTransform extends BitmapTransformation {
    private static float radius = 0f;
    public GlideRoundTransform(Context context) {
        this(context, 4);
    }
    public GlideRoundTransform(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);
    }
}

Glide.with(this).load("https://http://pic2.16pic.com/00/49/82/16pic_4982428_b.jpg").transform(new GlideRoundTransform(context)).into(imageView);
Glide.with(this).load("http://img0.ph.126.net/RDOc9nj6uw53zR7XOj4ByA==/6630422352373781502.jpg").transform(new GlideRoundTransform(context, 10)).into(imageView);
Glide.with(this).load("http://img02.tooopen.com/images/20150912/tooopen_sy_141906874283.jpg").transform(new GlideCircleTransform(context)).into(imageView);