Android将Glide动态加载不同大小的图片切圆角与圆形的方法

@Override
 public View getView(int position, View convertView, ViewGroup parent) {
 if (null == convertView) {
  //.....
 }
 Glide
  .with(context)
  .load(imageUrls[position])
  .into(holder.imageView);
 return convertView;
 }

@Override
 public void onBindViewHolder(RVViewHolder holder, int position) {

  Glide.with(MainActivity.this)
   .load(args[position])
   .into(holder.imageView);
 }

Glide
 .with(context)
 .load(UsageExampleListViewAdapter.eatFoodyImages[0])
 .placeholder(R.mipmap.ic_launcher) // can also be a drawable
 .into(imageViewPlaceholder);

Glide
 .with(context)
 .load("http://futurestud.io/non_existing_image.png")
 .error(R.mipmap.future_studio_launcher) // will be displayed if the image cannot be loaded
 .into(imageViewError);

//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
Glide.with(MainActivity.this)
   .load(args[position])
   .centerCrop()
   .into(holder.imageView);

//使用fitCenter即缩放图像让图像都测量出来等于或小于 ImageView 的边界范围
//该图像将会完全显示，但可能不会填满整个 ImageView。
Glide.with(MainActivity.this)
   .load(args[position])
   .fitCenter()
   .into(holder.imageView);

Glide 
 .with( context )
 .load( gifUrl )
 .asGif() //判断加载的url资源是否为gif格式的资源
 .error( R.drawable.full_cake )
 .into( imageViewGif );

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

Glide 
 .with( context )
 .load( Images[0] )
 .skipMemoryCache( true ) //跳过内存缓存
 .into( imageViewInternet );

Glide 
 .with( context )
 .load( images[0] )
 .diskCacheStrategy( DiskCacheStrategy.NONE ) //跳过硬盘缓存
 .into( imageViewInternet );

Priority.LOW
Priority.NORMAL
Priority.HIGH
Priority.IMMEDIATE 

private void loadImageWithHighPriority() { 
 Glide
 .with( context )
 .load( mages[0] )
 .priority( Priority.HIGH )
 .into( imageViewHero );
}
private void loadImagesWithLowPriority() { 
 Glide
 .with( context )
 .load( images[1] )
 .priority( Priority.LOW )
 .into( imageViewLowPrioLeft );
 Glide
 .with( context )
 .load( images[2] )
 .priority( Priority.LOW )
 .into( imageViewLowPrioRight );
}

//括号中的300,600代表宽和高但是未有作用
SimpleTarget target = new SimpleTarget(300,600) {
  @Override
  public void onResourceReady(Bitmap resource, GlideAnimation<&＃63; super Bitmap> glideAnimation) {
   holder.imageView.setImageBitmap(resource);
  }
  };
  Glide.with(MainActivity.this)
   .load(args[position])
   .asBitmap()
   .into(target);

dependencies { 
 // your other dependencies
 // ...
 // Glide
 compile 'com.github.bumptech.glide:glide:3.6.1'
 // Glide's OkHttp Integration 
 compile 'com.github.bumptech.glide:okhttp-integration:1.3.1@aar'
 compile 'com.squareup.okhttp:okhttp:2.5.0'
}

dependencies { 
 // your other dependencies
 // ...
 // Glide
 compile 'com.github.bumptech.glide:glide:3.6.1'
 // Glide's Volley Integration 
 compile 'com.github.bumptech.glide:volley-integration:1.3.1@aar'
 compile 'com.mcxiaoke.volley:library:1.0.8'
}

apply plugin: 'com.android.application'

android {
 compileSdkVersion 26
 buildToolsVersion "26.0.2"

 defaultConfig {
 applicationId "cn.xm.weidongjian.glidedemo"
 minSdkVersion 15
 targetSdkVersion 26
 versionCode 1
 versionName "1.0"
 }
 buildTypes {
 release {
  minifyEnabled false
  proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
 }
 debug {
  minifyEnabled true
  proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
 }
 }
}
dependencies {
 compile fileTree(dir: 'libs', include: ['*.jar'])
 compile 'com.android.support:appcompat-v7:26.1.0'
 compile 'com.github.bumptech.glide:glide:3.6.1'
}

package cn.xm.weidongjian.glidedemo;

import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import com.bumptech.glide.Glide;
import com.bumptech.glide.RequestManager;

public class MainActivity extends AppCompatActivity implements OnClickListener {

 private ImageView imageView;
 private RequestManager glideRequest;
 private Context cOntext= this;
 private ImageView imageView2;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 init();
 }

 private void init() {
 findViewById(R.id.button).setOnClickListener(this);
 findViewById(R.id.button2).setOnClickListener(this);
 findViewById(R.id.button3).setOnClickListener(this);
 findViewById(R.id.button4).setOnClickListener(this);
 imageView = (ImageView) findViewById(R.id.imageView);
 imageView2 = (ImageView) findViewById(R.id.imageView2);
 glideRequest = Glide.with(this);
 }

 @Override
 public void onClick(View v) {
 switch (v.getId()) {
  case R.id.button:
  glideRequest.load("http://androidop.le890.com/hma/upload/2016/10/11/1704146358.png").into(imageView);
  glideRequest.load("http://androidop.le890.com/hma/upload/2016/10/11/1716089900.png").into(imageView2);
  break;
  case R.id.button2:
  glideRequest.load("http://androidop.le890.com/hma/upload/2016/10/11/1704146358.png").transform(new GlideRoundTransform(context)).into(imageView);
  glideRequest.load("http://androidop.le890.com/hma/upload/2016/10/11/1716089900.png").transform(new GlideRoundTransform(context)).into(imageView2);
  break;
  case R.id.button3:
  glideRequest.load("http://androidop.le890.com/hma/upload/2016/10/11/1704146358.png").transform(new GlideRoundTransform(context, 7)).into(imageView);
  glideRequest.load("http://androidop.le890.com/hma/upload/2016/10/11/1716089900.png").transform(new GlideRoundTransform(context, 7)).into(imageView2);
  break;
  case R.id.button4:
  glideRequest.load("http://androidop.le890.com/hma/upload/2016/10/11/1704146358.png").transform(new GlideCircleTransform(context)).into(imageView);
  glideRequest.load("http://androidop.le890.com/hma/upload/2016/10/11/1716089900.png").transform(new GlideCircleTransform(context)).into(imageView2);
  break;
 }
 }
}

package cn.xm.weidongjian.glidedemo;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Paint;
import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;

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();
 }
}

package cn.xm.weidongjian.glidedemo;

import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.RectF;
import android.util.Log;
import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;

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 bitmap = changeBitmapSize(source);
 Bitmap result = pool.get(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_4444);
 if (result == null) {

  int width = bitmap.getWidth();
  int height = bitmap.getHeight();
  result = Bitmap.createBitmap(width,height, Bitmap.Config.ARGB_4444);
 }
 Canvas canvas = new Canvas(result);
 Paint paint = new Paint();
 paint.setShader(new BitmapShader(bitmap, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
 paint.setAntiAlias(true);
 RectF rectF = new RectF(0f, 0f, bitmap.getWidth(), bitmap.getHeight());
 canvas.drawRoundRect(rectF, radius, radius, paint);
 return result;
 }
 public static Bitmap changeBitmapSize(Bitmap bitmap) {
 int width = bitmap.getWidth();
 int height = bitmap.getHeight();
 //设置想要的大小
 int newWidth=72;
 int newHeight=72;
 //计算压缩的比率
 float scaleWidth=((float)newWidth)/width;
 float scaleHeight=((float)newHeight)/height;
 //获取想要缩放的matrix
 Matrix matrix = new Matrix();
 matrix.postScale(scaleWidth,scaleHeight);
 //获取新的bitmap
 bitmap=Bitmap.createBitmap(bitmap,0,0,width,height,matrix,true);
 bitmap.getWidth();
 bitmap.getHeight();
 Log.e("newWidth","newWidth"+bitmap.getWidth());
 Log.e("newHeight","newHeight"+bitmap.getHeight());
 return bitmap;
 }

 @Override public String getId() {
 return getClass().getName() + Math.round(radius);
 }
}