Android框架之Picasso和Glide的使用及区别

来源：互联网发布：电音入门耳机知乎编辑：程序博客网时间：2024/06/05 01:03

            Picasso  Gilde

1.1行显示ImageView
Picasso.with(context).load(“http://i.imgur.com/DvpvklR.png“).into(imageView);

Many common pitfalls of image loading on Android are handled automatically by Picasso:

-Handling ImageView recycling and download cancelation in an adapter.-Complex image transformations with minimal memory use.-Automatic memory and disk caching.

2.加载不同位置的资源

Picasso.with(context).load(R.drawable.landing_screen).into(imageView1);Picasso.with(context).load("file:///android_asset/DvpvklR.png").into(imageView2);Picasso.with(context).load(new File(...)).into(imageView3);设置尺寸如果你想对这张图片进行剪裁，可以使用resize方法：Picasso.with(this).load("http://n.sinaimg.cn/translate/20160819/9BpA-fxvcsrn8627957.jpg")                  .resize(200,200)                  .into(iv);  注意这里的200表示200px，如果你想在resize时指定dp，可以使用如下方法：Picasso.with(this).load("http://n.sinaimg.cn/translate/20160819/9BpA-fxvcsrn8627957.jpg")                  .resizeDimen(R.dimen.iv_width,R.dimen.iv_height)                  .into(iv);

3.自定义Picasso

Picasso picasso = new Picasso.Build(Context).build(); .memoryCache(new LruCache(10*1024*1024)).defaultBitmapConfig(Bitmap.Config.RGB_565) .downloader(new OkHttpDownloader(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),10*1024*1024)) .indicatorsEnabled(true)  //设置图片来源，给予指示！

4.Picasso常用属性

config(Bitmap.Config.RGB_565)//设置格式 .memoryPolicy(MemoryPolicy.NO_CACHE,MemoryPolicy.NO_STORE) //不缓存 也不在内存中获取 .resize(100,100) .centerInside().placeholder(R.mipmap.ic_launcher).error(R.mipmap.ic_launcher).rotate(40). transform(new Transformation() { @Override

// public Bitmap transform(Bitmap source) {
// int max = Math.min(source.getHeight(), source.getWidth());
// Bitmap bitmap = Bitmap.createBitmap(source, 0, 0, max, max);
// source.recycle();
// return bitmap;
// }
//
// @Override
// public String key() {
// return “key”;
// }
// })

Transformation transformation = new Transformation() {              @Override              public Bitmap transform(Bitmap source) {                  int width = source.getWidth();                  int height = source.getHeight();                  int size = Math.min(width, height);                  Bitmap blankBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);                  Canvas canvas = new Canvas(blankBitmap);                  Paint paint = new Paint();                  paint.setAntiAlias(true);                  canvas.drawCircle(size / 2, size / 2, size / 2, paint);                  paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));                  canvas.drawBitmap(source, 0, 0, paint);                  if (source != null && !source.isRecycled()) {                      source.recycle();                  }                  return blankBitmap;              }              @Override              public String key() {                  return "squareup";              }          };  Picasso高级部分，自定义Picasson文件缓存位置！！！downloader(new OkHttpDownloader(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),10*1024*1024))

Picasso

 介绍：         一个快速加载图片的框架！内部支持！三级缓存，图片的防错位功能    注意：         Picasso不能在子线程中进行调用！     1.默认的缓存路径  File cache = new File(context.getApplicationContext().getCacheDir(), PICASSO_CACHE);     2.默认的图片格式  ARGB 8888     picasso不能加载gif     Picasso.with(Context)    自定义Picasso      Picasso picasso = new Picasso.Builder(this)     .defaultBitmapConfig(Bitmap.Config.RGB_565)     .downloader(new OkHttpDownloader(Environment.getExternalStorageDirectory()))     .build();       Glide

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