完善加载图片

fastDevelop/src/main/java/com/mayi/fastdevelop/view/CircleCornerForm.java

+package com.mayi.fastdevelop.view;
+
+
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffXfermode;
+import android.graphics.Rect;
+import android.graphics.RectF;
+
+import com.squareup.picasso.Transformation;
+
+/**
+ * 圆角切片
+ */
+public class CircleCornerForm implements Transformation {
+
+    @Override
+    public Bitmap transform(Bitmap source) {
+        int widthLight = source.getWidth();
+        int heightLight = source.getHeight();
+
+        Bitmap output = Bitmap.createBitmap(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
+
+        Canvas canvas = new Canvas(output);
+        Paint paintColor = new Paint();
+        paintColor.setFlags(Paint.ANTI_ALIAS_FLAG);
+
+        RectF rectF = new RectF(new Rect(0, 0, widthLight, heightLight));
+
+        canvas.drawRoundRect(rectF, widthLight / 5, heightLight / 5, paintColor);
+
+        Paint paintImage = new Paint();
+        paintImage.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_ATOP));
+        canvas.drawBitmap(source, 0, 0, paintImage);
+        source.recycle();
+        return output;
+    }
+
+    @Override
+    public String key() {
+        return "roundcorner";
+    }
+}

fastDevelop/src/main/java/com/mayi/fastdevelop/view/CircleTransform.java

+package com.mayi.fastdevelop.view;
+
+import android.graphics.Bitmap;
+import android.graphics.BitmapShader;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+
+import com.squareup.picasso.Transformation;
+
+/**
+ * 圆形图片
+ */
+public class CircleTransform implements Transformation {
+
+    @Override
+    public Bitmap transform(Bitmap source) {
+        int size = Math.min(source.getWidth(), source.getHeight());
+        int x = (source.getWidth() - size) / 2;
+        int y = (source.getHeight() - size) / 2;
+        Bitmap squaredBitmap = Bitmap.createBitmap(source, x, y, size, size);
+        if (squaredBitmap != source) {
+            source.recycle();
+        }
+        Bitmap bitmap = Bitmap.createBitmap(size, size, source.getConfig());
+        Canvas canvas = new Canvas(bitmap);
+        Paint paint = new Paint();
+        BitmapShader shader = new BitmapShader(squaredBitmap,
+                BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP);
+        paint.setShader(shader);
+        paint.setAntiAlias(true);
+        float r = size / 2f;
+        canvas.drawCircle(r, r, r, paint);
+        squaredBitmap.recycle();
+        return bitmap;
+    }
+    @Override
+    public String key() {
+        return "circle";
+    }
+}

fastDevelop/src/main/java/com/mayi/fastdevelop/view/LoadingPictures.java

 package com.mayi.fastdevelop.view;
 
+import android.text.TextUtils;
 import android.widget.ImageView;
 
 import com.mayi.fastdevelop.R;
@@ -14,7 +15,43 @@ public class LoadingPictures {
     public static int error = R.mipmap.loading_pictures_error_icon;
     public static int placeholder = R.mipmap.loading_pictures_placeholder_icon;
 
+    //加载圆角图片
+    public static void loadUriCircleCornerForm(String url, ImageView img) {
+        if (TextUtils.isEmpty(url)) {
+            Picasso.with(img.getContext()).load(error).transform(new CircleCornerForm()).into(img);
+        } else {
+            Picasso.with(img.getContext())
+                    .load(url)
+                    .resize(2000, 2000)
+                    .onlyScaleDown() // 如果图片规格大于2000*2000,将只会被resize
+                    .transform(new CircleCornerForm())
+                    .placeholder(placeholder)
+                    .error(error)
+                    .into(img);
+        }
+    }
+
+    //加载圆形图片
+    public static void loadUriCircleTransform(String url, ImageView img) {
+        if (TextUtils.isEmpty(url)) {
+            Picasso.with(img.getContext()).load(error).transform(new CircleTransform()).into(img);
+        } else {
+            Picasso.with(img.getContext())
+                    .load(url)
+                    .resize(2000, 2000)
+                    .onlyScaleDown() // 如果图片规格大于2000*2000,将只会被resize
+                    .transform(new CircleTransform())
+                    .placeholder(placeholder)
+                    .error(error)
+                    .into(img);
+        }
+    }
+
+    //加载网络图片
     public static void loadUri(String url, ImageView img) {
+        if (TextUtils.isEmpty(url)) {
+            Picasso.with(img.getContext()).load(error).into(img);
+        } else {
             Picasso.with(img.getContext())
                     .load(url)
                     .resize(2000, 2000)
@@ -23,8 +60,13 @@ public class LoadingPictures {
                     .error(error)
                     .into(img);
         }
+    }
 
+    //加载文件图片
     public static void loadFile(File file, ImageView img) {
+        if (file == null) {
+            Picasso.with(img.getContext()).load(error).into(img);
+        } else {
             Picasso.with(img.getContext())
                     .load(file)
                     .resize(2000, 2000)
@@ -32,9 +74,11 @@ public class LoadingPictures {
                     .error(error)
                     .into(img);
         }
+    }
 
+    //加载文件图片
     public static void loadFile(String pathname, ImageView img) {
-        loadFile(new File(pathname),img);
+        loadFile(new File(pathname), img);
     }
 
 }