Android Glide图片框架使用

2019-11-09 15:03:30

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使用glide要有v4包

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dependencies { compile 'com.github.bumptech.glide:glide:3.5.2' compile 'com.android.support:support-v4:22.0.0' }

Glide的with方法不只能接受Context%20,%20还能接受Activity和Fragment%20,%20Context会自动从他们获取%20. 简单基础用法

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Glide.with(mContext).load(url).into(imageViewId);

带缓存

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Glide.with(mContext).load(url).diskCacheStrategy(DiskCacheStrategy.ALL).into(im);

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Glide.with( context ).load(imageUrl).skipMemoryCache(true).into(imageViewInternet );//跳过内存缓存 [java] view%20plain copy

Glide.with( context ).load(imageUrl).diskCacheStrategy(DiskCacheStrategy.NONE).into( imageViewInternet );//跳过硬盘缓存

详解%20: 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）

获取Bitmap设置CircleImageView%20:

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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 } }; 加载圆形图片%20:

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//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(); } } Contact GitHub API Training Shop Blog About

加载圆角图片%20:

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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); } } [java] view%20plain copy

Glide.with(this).load("https://www.baidu.com/img/bdlogo.png").transform(new GlideRoundTransform(context)).into(imageView); Glide.with(this).load("https://www.baidu.com/img/bdlogo.png").transform(new GlideRoundTransform(context, 10)).into(imageView); Glide.with(this).load("https://www.baidu.com/img/bdlogo.png").transform(new GlideCircleTransform(context)).into(imageView);

加上图片未能及时显示时等待时的图片

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Glide.with(context).load(imageUrl).placeholder(R.mipmap.ic_launcher).into(imageView);

设置加载失败时显示的图片[java] view%20plain copy

Glide.with(context).load(imageUrl).error(R.mipmap.ic_launcher).into(imageView);

设置图片加载顺序优先级%20:

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Glide.with(context).load(imageUrl).priority( Priority.HIGH).into( imageView);

图片的适应和缩放%20:

1)使用centerCrop是利用图片图填充ImageView设置的大小，如果ImageView的Height是match_parent则图片就会被拉伸填充

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Glide.with(context).load(imageUrl).centerCrop().into(imageView);

2)使用fitCenter即缩放图像让图像都测量出来等于或小于%20ImageView%20的边界范围,该图像将会完全显示，但可能不会填满整个ImageView。

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<span style="font-size:32px;">Glide.with(context).load(imageUrl).fitCenter().into(imageView);</span>

判断是否是Gif动画,显示gif动画%20:

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Glide.with(context).load(imageUrl).asGif().into(imageView);

显示本地视频%20:

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String filePath = "/storage/emulated/0/Pictures/example_video.mp4"; Glide.with( context ).load( Uri.fromFile( new File( filePath ) ) ).into(imageViewGifAsBitmap );

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