Glide的使用学习

  1 import android.app.AlertDialog;
  2 import android.content.DialogInterface;
  3 import android.graphics.Bitmap;
  4 import android.graphics.BitmapFactory;
  5 import android.graphics.drawable.BitmapDrawable;
  6 import android.graphics.drawable.Drawable;
  7 import android.net.Uri;
  8 import android.os.Bundle;
  9 import android.os.Environment;
 10 import android.support.annotation.Nullable;
 11 import android.support.v7.app.AppCompatActivity;
 12 import android.view.View;
 13 import android.widget.Button;
 14 import android.widget.ImageView;
 15 
 16 import com.bumptech.glide.Glide;
 17 import com.bumptech.glide.Priority;
 18 import com.bumptech.glide.load.DataSource;
 19 import com.bumptech.glide.load.engine.DiskCacheStrategy;
 20 import com.bumptech.glide.load.engine.GlideException;
 21 import com.bumptech.glide.load.resource.bitmap.RoundedCorners;
 22 import com.bumptech.glide.request.RequestListener;
 23 import com.bumptech.glide.request.RequestOptions;
 24 import com.bumptech.glide.request.target.SimpleTarget;
 25 import com.bumptech.glide.request.target.Target;
 26 import com.bumptech.glide.request.transition.Transition;
 27 import com.example.demonstrate.DemonstrateUtil;
 28 
 29 import java.io.File;
 30 
 31 public class MainActivity extends AppCompatActivity implements View.OnClickListener {
 32 
 33     protected ImageView iv;
 34     protected Button btn;
 35     protected String item;
 36     private String STR_TAG = "--->***";
 37     private String TAG = this.getClass().getSimpleName();
 38     protected String result;
 39 
 40     @Override
 41     protected void onCreate(Bundle savedInstanceState) {
 42         super.onCreate(savedInstanceState);
 43         super.setContentView(R.layout.activity_main);
 44 
 45         initView();
 46     }
 47 
 48     private void initView() {
 49         iv = (ImageView) findViewById(R.id.iv);
 50         btn = (Button) findViewById(R.id.btn);
 51         Button btn2 = (Button) findViewById(R.id.btn2);
 52         btn.setOnClickListener(MainActivity.this);
 53         btn2.setOnClickListener(MainActivity.this);
 54     }
 55 
 56     @Override
 57     public void onClick(View view) {
 58         if (view.getId() == R.id.btn) {
 59             show();
 60         } else if (view.getId() == R.id.btn2) {
 61             show0();
 62         }
 63     }
 64 
 65     private void show0() {
 66         String[] items = {
 67                 "0加载图片来自File",
 68                 "1加载图片来自资源id",
 69                 "2加载图片来自uri",
 70                 "3加载强制转化为gif",
 71                 "4加载原图的缩略图",
 72                 "5加载缩略图高级方式",
 73                 "6加载设置不缓存",
 74                 "7加载设置优先级",
 75                 "8加载回调后的图片",
 76                 "9加载回调后的图片设置尺寸",
 77                 "10加载图片圆角转换",
 78                 "11加载图片圆角转换2",
 79         };
 80         new AlertDialog.Builder(this)
 81                 .setTitle("glide操作2")
 82                 .setItems(items, new DialogInterface.OnClickListener() {
 83                     @Override
 84                     public void onClick(DialogInterface dialog, int which) {
 85                         switch (which) {
 86                             case 0:
 87                                 selectedA0();
 88                                 break;
 89                             case 1:
 90                                 selectedA1();
 91                                 break;
 92                             case 2:
 93                                 selectedA2();
 94                                 break;
 95                             case 3:
 96                                 selectedA3();
 97                                 break;
 98                             case 4:
 99                                 selectedA4();
100                                 break;
101                             case 5:
102                                 selectedA5();
103                                 break;
104                             case 6:
105                                 selectedA6();
106                                 break;
107                             case 7:
108                                 selectedA7();
109                                 break;
110                             case 8:
111                                 selectedA8();
112                                 break;
113                             case 9:
114                                 selectedA9();
115                                 break;
116                             case 10:
117                                 selectedA10();
118                                 break;
119                             case 11:
120                                 selectedA11();
121                                 break;
122                             case 12:
123                                 break;
124                         }
125                     }
126                 }).create()
127                 .show();
128     }
129 
130     private void selectedA11() {
131         //RoundedCorners,
132         //CenterInside
133         Glide.with(this)
134                 .load(UC.IMAGE_URL_A11)
135                 .apply(
136                         new RequestOptions()
137                                 .override(300)
138                                 .transform(new RoundedCorners(20))
139                 )
140                 .into(iv);
141     }
142 
143     private void selectedA10() {
144         Glide.with(this)
145                 .load(UC.IMAGE_URL_A10)
146                 .apply(new RequestOptions().transform(new GlideRoundTransform(this)))
147                 .into(iv);
148     }
149 
150     private void selectedA9() {
151         //强制Glide返回一个Bitmap
152         SimpleTarget<Bitmap> target = new SimpleTarget<Bitmap>(300, 300) {
153             @Override
154             public void onResourceReady(Bitmap resource, Transition<? super Bitmap> transition) {
155                 iv.setImageBitmap(resource);
156             }
157         };
158         Glide.with(this).asBitmap()
159                 .load(UC.IMAGE_URL_A9)
160                 .into(target
161                 );
162     }
163 
164 
165     private void selectedA8() {
166         //上面这段代码不要写成匿名内部类的机制，原因就是java的自动垃圾回收机制可能在图片还没有加载好的时候就已经把你的Target回收了
167         //注意.with()里面的参数，Glide的请求是和传进去的Context共存亡的，如果传一个Activity进去，当Activity GG过后，你的请求也就GG了，但是如果这样传：.with(context.getApplicationContext() ).当你的Activity GG过后，请求还是会继续，回调还是会继续。
168 
169 
170         //强制Glide返回一个Bitmap
171         SimpleTarget<Bitmap> target = new SimpleTarget<Bitmap>() {
172             @Override
173             public void onResourceReady(Bitmap resource, Transition<? super Bitmap> transition) {
174                 iv.setImageBitmap(resource);
175             }
176         };
177         Glide.with(this).asBitmap()
178                 .load(UC.IMAGE_URL_A8)
179                 .into(target
180                 );
181     }
182 
183     private void selectedA7() {
184         Glide.with(this)
185                 .load(UC.IMAGE_URL_A7)
186                 .apply(new RequestOptions().priority(Priority.LOW))
187                 .into(iv);
188     }
189 
190     private void selectedA6() {
191         Glide.with(this)
192                 .load(UC.IMAGE_URL_A6)
193                 .apply(new RequestOptions().skipMemoryCache(true).diskCacheStrategy(DiskCacheStrategy.NONE))
194                 .into(iv);
195     }
196 
197     private void selectedA5() {
198         //先加载第一张图片作为缩略图,在加载最终要显示的图片
199         //thumbnail中加载的是缩略图
200         Glide.with(this).load(UC.IMAGE_URL_9)
201                 .thumbnail(Glide.with(this).load(UC.IMAGE_URL_A5)).into(iv);
202     }
203 
204     private void selectedA4() {
205         //先加载为原图的十分之一,后再加载原图.
206         Glide.with(this)
207                 .load(UC.IMAGE_URL_A4)
208                 .thumbnail(0.1f)
209                 .into(iv);
210     }
211 
212     private void selectedA3() {
213         Glide.with(this).asGif().load(UC.GIF_URL_0).into(iv);
214     }
215 
216     private void selectedA2() {
217         Glide.with(this)
218                 .load(Uri.fromFile(new File(Environment.getExternalStorageDirectory(), "d.jpg")))
219                 .into(iv);
220     }
221 
222     private void selectedA1() {
223         Glide.with(this)
224                 .load(R.mipmap.ic_launcher_round)
225                 .into(iv);
226     }
227 
228     private void selectedA0() {
229         File file = new File(Environment.getExternalStorageDirectory(), "3.jpg");
230         Glide.with(this).load(file).into(iv);
231     }
232 
233     private void show() {
234         final String[] items = {
235                 "0加载图片一般用法",
236                 "1加载图片成功监听",
237                 "2加载图片失败",
238                 "3加载图片ID占位图",
239                 "4加载图片Drawable占位图",
240                 "5加载图片传入null",
241                 "6加载图片后修改宽高",
242                 "7加载图片后修改宽高等尺寸",
243                 "8加载图片centerCrop",
244                 "9加载图片fitCenter",
245                 "10加载图片centerInside",
246                 "11加载图片circleCrop",
247                 "12加载动态图的第一帧",
248                 "13加载动态图成功",
249                 "14加载本地视频缩略图",
250 
251         };
252         new AlertDialog.Builder(this)
253                 .setTitle("glide操作选项")
254                 .setItems(items, new DialogInterface.OnClickListener() {
255                     @Override
256                     public void onClick(DialogInterface dialog, int which) {
257                         item = items[which] + STR_TAG;
258                         switch (which) {
259                             case 0:
260                                 selected0();
261                                 break;
262                             case 1:
263                                 selected1();
264                                 break;
265                             case 2:
266                                 selected2();
267                                 break;
268                             case 3:
269                                 selected3();
270                                 break;
271                             case 4:
272                                 selected4();
273                                 break;
274                             case 5:
275                                 selected5();
276                                 break;
277                             case 6:
278                                 selected6();
279                                 break;
280                             case 7:
281                                 selected7();
282                                 break;
283                             case 8:
284                                 selected8();
285                                 break;
286                             case 9:
287                                 selected9();
288                                 break;
289                             case 10:
290                                 selected10();
291                                 break;
292                             case 11:
293                                 selected11();
294                                 break;
295                             case 12:
296                                 selected12();
297                                 break;
298                             case 13:
299                                 selected13();
300                                 break;
301                             case 14:
302                                 selected14();
303                                 break;
304                         }
305                     }
306                 }).create()
307                 .show();
308     }
309 
310     private void selected14() {
311         //缩略图的加载
312         String name = "v.f40.mp4";
313         Glide.with(this).load(Uri.fromFile(new File(Environment.getExternalStorageDirectory(), name)))
314                 .into(iv);
315     }
316 
317     private void selected13() {
318         //GIF加载，URL指向的资源必须是gif，如果是普通图片则不显示。
319         //相反，如果指向正确但没有执行asGif方法，则只是作为普通图片展示
320         Glide.with(this).asGif().load(UC.GIF_URL_0).into(iv);
321     }
322 
323     private void selected12() {
324         //可理解为加载动态图的第一帧的Bitmap,比如Gif
325         Glide.with(this).asBitmap().
326                 load(UC.GIF_URL_0).into(iv);
327     }
328 
329     private void selected11() {
330         Glide.with(this)
331                 .load(UC.IMAGE_URL_11)
332                 .apply(new RequestOptions().circleCrop())
333                 .into(iv);
334     }
335 
336     private void selected10() {
337         Glide.with(this)
338                 .load(UC.IMAGE_URL_10)
339                 .apply(new RequestOptions().centerInside())
340                 .into(iv);
341     }
342 
343     private void selected9() {
344         Glide.with(this)
345                 .load(UC.IMAGE_URL_8)
346                 .apply(new RequestOptions().fitCenter())
347                 .into(iv);
348     }
349 
350     private void selected8() {
351         RequestOptions options = new RequestOptions()
352                 .centerCrop();
353         Glide.with(this)
354                 .load(UC.IMAGE_URL_9)
355                 .apply(options)
356                 .into(iv);
357     }
358 
359     private void selected7() {
360         RequestOptions options = new RequestOptions().override(300).fitCenter();
361         Glide.with(this)
362                 .load(UC.IMAGE_URL_1)
363                 .apply(options)
364                 .into(iv);
365     }
366 
367     private void selected6() {
368         RequestOptions options = new RequestOptions().override(400, 400).fitCenter();
369         Glide.with(this).load(UC.IMAGE_URL_1)
370                 .apply(options)
371                 .into(iv);
372     }
373 
374     private void selected5() {
375         RequestOptions options = new RequestOptions()
376                 .fallback(R.mipmap.ic_launcher)
377                 .diskCacheStrategy(DiskCacheStrategy.NONE);
378         Glide.with(this)
379                 .load(null)
380                 .apply(options)
381                 .into(iv);
382     }
383 
384     private void selected4() {
385         Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.load);
386         Drawable drawable = new BitmapDrawable(getResources(), bitmap);
387         RequestOptions options = new RequestOptions().placeholder(drawable);
388         Glide.with(this)
389                 .load(UC.IMAGE_URL_ERROR)
390                 .apply(options)
391                 .into(iv);
392     }
393 
394     private void selected3() {
395         RequestOptions options = new RequestOptions()
396                 .placeholder(R.mipmap.load)
397                 .error(R.mipmap.fail)
398                 .fallback(R.mipmap.ic_launcher)
399                 .diskCacheStrategy(DiskCacheStrategy.NONE);
400         Glide.with(this)
401                 .load(UC.IMAGE_URL_ERROR)
402                 .apply(options)
403                 .into(iv);
404     }
405 
406     private void selected2() {
407         Glide.with(this)
408                 .load(UC.IMAGE_URL_ERROR)
409                 .listener(new RequestListener<Drawable>() {
410                     @Override
411                     public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Drawable> target, boolean isFirstResource) {
412                         DemonstrateUtil.showToastResult(MainActivity.this, "onLoadFailed失败");
413                         return false;
414                     }
415 
416                     @Override
417                     public boolean onResourceReady(Drawable resource, Object model, Target<Drawable> target, DataSource dataSource, boolean isFirstResource) {
418                         DemonstrateUtil.showToastResult(MainActivity.this, "onResourceReady成功");
419                         return false;
420                     }
421                 }).into(iv);
422     }
423 
424     private void selected1() {
425 
426         Glide.with(this)
427                 .load(UC.IMAGE_URL_1)
428                 .listener(new RequestListener<Drawable>() {
429                     @Override
430                     public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Drawable> target, boolean isFirstResource) {
431                         DemonstrateUtil.showToastResult(MainActivity.this, "onLoadFailed加载失败!");
432                         return false;
433                     }
434 
435                     @Override
436                     public boolean onResourceReady(Drawable resource, Object model, Target<Drawable> target, DataSource dataSource, boolean isFirstResource) {
437                         DemonstrateUtil.showToastResult(MainActivity.this, "onResourceReady加载成功!");
438                         return false;
439                     }
440                 })
441                 .into(iv);
442     }
443 
444     private void selected0() {
445         //默认使用原图加载,内存缓存,磁盘缓存,
446         Glide.with(this).load(UC.IMAGE_URL_0).into(iv);
447     }
448 
449 
450 }

 1 import android.content.Context;
 2 import android.content.res.Resources;
 3 import android.graphics.Bitmap;
 4 import android.graphics.BitmapShader;
 5 import android.graphics.Canvas;
 6 import android.graphics.Paint;
 7 import android.graphics.RectF;
 8 
 9 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
10 import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;
11 
12 import java.security.MessageDigest;
13 
14 
15 /**
16  *实现圆角效果.
17  */
18 
19 public class GlideRoundTransform extends BitmapTransformation {
20     private float radius = 0f;
21 
22     public GlideRoundTransform(Context context) {
23         this(context, 20);
24     }
25 
26     public GlideRoundTransform(Context context, int dp) {
27         super(context);
28         //density,屏幕密度.1.5,1,0.75
29         this.radius = Resources.getSystem().getDisplayMetrics().density * dp;
30     }
31 
32     @Override
33     protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
34         return roundCrop(pool, toTransform);
35     }
36 
37     private Bitmap roundCrop(BitmapPool pool, Bitmap source) {
38         if (source == null) return null;
39         //Bitmap.Config.ARGB_8888,图片质量.
40         Bitmap result = pool.get(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
41 
42         if (result == null) {
43             result = Bitmap.createBitmap(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
44         }
45         Canvas canvas = new Canvas(result);
46         Paint paint = new Paint();
47         //REPEAT,MIRROR,CLAMP{重复,镜像,拉伸}
48         //设置着色器
49         paint.setShader(new BitmapShader(source, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
50         //设置抗锯齿.
51         paint.setAntiAlias(true);
52         //矩阵,(float left, float top, float right, float bottom)
53         //矩形的左边的x坐标,矩形的顶部的Y坐标,对右侧的矩形的x坐标,矩形的底部的Y坐标
54         RectF rectF = new RectF(0f, 0f, source.getWidth(), source.getHeight());
55         //画指定的圆矩形。
56         //drawRoundRect(RectF rect, float rx, float ry, @NonNull Paint paint)
57         //矩阵,圆角,椭圆的x半径,y半径.画笔,
58         canvas.drawRoundRect(rectF, radius, radius, paint);
59         return result;
60 
61     }
62 
63     @Override
64     public void updateDiskCacheKey(MessageDigest messageDigest) {
65 
66     }
67 }

 1 import android.content.Context;
 2 import android.graphics.Bitmap;
 3 
 4 import com.bumptech.glide.Glide;
 5 import com.bumptech.glide.load.Transformation;
 6 import com.bumptech.glide.load.engine.Resource;
 7 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
 8 import com.bumptech.glide.load.resource.bitmap.BitmapResource;
 9 
10 import java.security.MessageDigest;
11 
12 /**
13  * Created by think on 2017/10/25.
14  */
15 
16 public class MyTransformation implements Transformation<Bitmap> {
17 
18     private BitmapPool mBitmapPool;
19     private int mWidth;
20     private int mHeight;
21 
22     public MyTransformation(Context context) {
23         this(Glide.get(context).getBitmapPool());
24     }
25 
26     public MyTransformation(BitmapPool pool) {
27         this.mBitmapPool = pool;
28     }
29 
30     @Override
31     public Resource<Bitmap> transform(Context context, Resource<Bitmap> resource, int outWidth, int outHeight) {
32         Bitmap source = resource.get();
33         int size = Math.min(source.getWidth(), source.getHeight());
34 
35         mWidth = (source.getWidth() - size) / 2;
36         mHeight = (source.getHeight() - size) / 2;
37 
38         Bitmap.Config config =
39                 source.getConfig() != null ? source.getConfig() : Bitmap.Config.ARGB_8888;
40         Bitmap bitmap = mBitmapPool.get(mWidth, mHeight, config);
41         if (bitmap == null) {
42             bitmap = Bitmap.createBitmap(source, mWidth, mHeight, size, size);
43         }
44 
45         return BitmapResource.obtain(bitmap, mBitmapPool);
46     }
47 
48     @Override
49     public void updateDiskCacheKey(MessageDigest messageDigest) {
50 
51     }
52 }

 1 public interface UC {
 2     String IMAGE_URL_0 = "http://p0.so.qhmsg.com/t010b9ba7c1e568dd3f.jpg";
 3     String IMAGE_URL_1 = "http://img3.a0bi.com/upload/ttq/20160621/1466508726953.jpg";
 4     String IMAGE_URL_8= "http://www.285868.com/uploadfile/2016/1027/20161027102235543.jpg";
 5     String IMAGE_URL_ERROR = "http://p0.so.qhmsg.com/t010b9ba7c1e568dd3f66.jpg";
 6     String IMAGE_URL_9 = "http://img2.3lian.com/2014/f3/51/d/2.jpg";
 7     String IMAGE_URL_10 = "http://www.5djiaren.com/uploads/2015-10/24-175904_894.jpg";
 8     String IMAGE_URL_11 = "http://tupian.enterdesk.com/2013/mxy/0810/1/4.jpg";
 9     String IMAGE_URL_12 = "http://thumb.takefoto.cn/wp-content/uploads/2016/03/201603211236327864.jpg";
10 
11     String GIF_URL_0 = "http://uploads.rayli.com.cn/2016/0823/1471943453795.gif";
12     String VIDEO_RUL_0 = "http://1251603248.vod2.myqcloud.com/4c9adaa7vodtransgzp1251603248/30e0819d9031868223192061218/v.f40.mp4";
13     String IMAGE_URL_A4 = "http://www.hinews.cn/pic/0/10/24/62/10246261_856361.jpg";
14     String IMAGE_URL_A5 = "http://img1.gtimg.com/0/1/168/16805_1200x1000_0.jpg";
15     String IMAGE_URL_A6 = "http://img.mp.itc.cn/upload/20161104/d5737b849b6442ea9f594ddc3cbbc23a_th.jpeg";
16     String IMAGE_URL_A7 = "http://5.26923.com/download/pic/000/330/4a9bfbb14275471e5ec956ad416b6194.jpg";
17     String IMAGE_URL_A8 = "http://pic1.win4000.com/wallpaper/8/55f91ad3a23ea.jpg";
18     String IMAGE_URL_A9 = "http://www.hinews.cn/pic/0/14/00/69/14006911_715505.jpg";
19     String IMAGE_URL_A10 = "http://p4.so.qhmsg.com/t0199c5431414d2ea29.jpg";
20     String IMAGE_URL_A11 = "http://p2.cri.cn/M00/1C/C0/CqgNOlm4oreAHkbcAAAAAAAAAAA69.3200x2000.jpeg";
21     String IMAGE_URL_A12 = "http://img1.qq.com/ent/pics/10742/10742073.jpg";
22 }