diff --git a/library/src/main/ets/components/imageknife/Downsampling/DownsampleStartegy.ets b/library/src/main/ets/components/imageknife/Downsampling/DownsampleStartegy.ets
index 6c08325..5f02cb0 100644
--- a/library/src/main/ets/components/imageknife/Downsampling/DownsampleStartegy.ets
+++ b/library/src/main/ets/components/imageknife/Downsampling/DownsampleStartegy.ets
@@ -6,7 +6,7 @@ export class CenterInside{
   getScaleFactor(sourceWidth:number, sourceHeight:number,requestWidth:number, requestHeight:number):number {
     return Math.min(1,this.getScale(sourceWidth, sourceHeight, requestWidth, requestHeight))
   }
-  getSampleSizeRounding(sourceWidth:number, sourceHeight:number, requestWidth:number, requestHeight:number):SampleSizeRounding {
+  getSampleSizeRounding(sourceWidth:number, sourceHeight:number, requestWidth:number, requestHeight:number):number{
     return 1
   }
   getScale(sourceWidth: number, sourceHeight: number, requestWidth: number, requestHeight: number): number {
@@ -80,9 +80,6 @@ export class Atleast implements BaseDownsampling{
 
 @Sendable
 export class CenterOutside implements BaseDownsampling{
-  static getSampleSizeRounding(orientedSourceWidth: number, orientedSourceHeight: number, targetWidth: number, targetHeight: number): SampleSizeRounding {
-    throw new Error('Method not implemented.')
-  }
   getName(){
     return "CenterOutside"
   }
diff --git a/library/src/main/ets/components/imageknife/Downsampling/Downsampler.ets b/library/src/main/ets/components/imageknife/Downsampling/Downsampler.ets
index ccb7ed6..22ce6cc 100644
--- a/library/src/main/ets/components/imageknife/Downsampling/Downsampler.ets
+++ b/library/src/main/ets/components/imageknife/Downsampling/Downsampler.ets
@@ -26,7 +26,7 @@ export class Downsampler {
       targetHeight = request.size.height;
       targetWidth = request?.size.width;
     } else {
-      console.log('宽高都不存在')
+      throw new Error("Cannot found width or height ");
     }
     if (sourceWidth <= 0 || sourceHeight <= 0) return;
     let orientedSourceWidth = sourceWidth;
@@ -36,13 +36,14 @@ export class Downsampler {
       orientedSourceHeight = sourceWidth;
     }
     /*安卓的模式*/
-    let exactScaleFactor: number =new FitCenter().getScaleFactor(orientedSourceWidth, orientedSourceHeight, targetWidth, targetHeight)
+    let exactScaleFactor: number =new FitCenter()
+      .getScaleFactor(orientedSourceWidth, orientedSourceHeight, targetWidth, targetHeight)
     if (exactScaleFactor <= 0) {
       throw new Error("Cannot	round	with exactScaleFactor");
     }
-    console.log('exactScaleFactor', exactScaleFactor)
     /*安卓的模式*/
-    let rounding: SampleSizeRounding =new FitCenter().getSampleSizeRounding(orientedSourceWidth, orientedSourceHeight, targetWidth, targetHeight)
+    let rounding: SampleSizeRounding =new FitCenter()
+      .getSampleSizeRounding(orientedSourceWidth, orientedSourceHeight, targetWidth, targetHeight)
     if (rounding == null) {
       throw new Error("Cannot round with null rounding");
     }
@@ -50,7 +51,9 @@ export class Downsampler {
     let outHeight: number = this.round(exactScaleFactor * orientedSourceHeight);
     let widthScaleFactor = Math.floor(orientedSourceWidth / outWidth);
     let heightScaleFactor = Math.floor(orientedSourceHeight / outHeight);
-    let scaleFactor = rounding == SampleSizeRounding.MEMORY ? Math.max(widthScaleFactor, heightScaleFactor) : Math.min(widthScaleFactor, heightScaleFactor)
+    let scaleFactor = rounding == SampleSizeRounding.MEMORY ?
+    Math.max(widthScaleFactor, heightScaleFactor) :
+    Math.min(widthScaleFactor, heightScaleFactor)
     // 将整型的缩放因子转换为2的次幂采样大小
     let powerOfTwoSampleSize: number = 0;
     powerOfTwoSampleSize = Math.max(1,this.highestOneBit(scaleFactor))
@@ -70,52 +73,18 @@ export class Downsampler {
     } else if (fileType == "PNG") {
       powerOfTwoWidth = Math.floor(orientedSourceWidth / powerOfTwoSampleSize);
       powerOfTwoHeight = Math.floor(orientedSourceHeight / powerOfTwoSampleSize);
-      console.log('执行了没', powerOfTwoHeight, powerOfTwoWidth)
     } else if (fileType == "WEBP") {
       powerOfTwoWidth = Math.round(orientedSourceWidth / powerOfTwoSampleSize);
       powerOfTwoHeight = Math.round(orientedSourceHeight / powerOfTwoSampleSize);
-    } else if (
-      orientedSourceWidth % powerOfTwoSampleSize != 0 || orientedSourceHeight % powerOfTwoSampleSize != 0) {
+    } else if (orientedSourceWidth % powerOfTwoSampleSize != 0 || orientedSourceHeight % powerOfTwoSampleSize != 0) {
 
-
-      // let dimensions; number[] = this.getDimensions(imageReader, options, decodeCallbacks,bitmapPool);
-      // powerOfTwoWidth = dimensions[0];
-      // powerofTwoHeight = dimensions[1];
     } else {
       powerOfTwoWidth = orientedSourceWidth / powerOfTwoSampleSize;
       powerOfTwoHeight = orientedSourceHeight / powerOfTwoSampleSize;
     }
-    // Let adjustedScaleFactor = downsampleStrategy.getScaleFactor(powerOfTwoWidth, powerOfTwoHeight, targetWidth, targetHeight);
-    // Density scaling is only supported if inBitmap is null prior to KitKat. Avoid setting
-    // densities here so we calculate the final Bitmap size correctly.
-    // if (Build.VERSION,SDK_INT >=Build.VERSION_CODES.KITKAT) {
-    // options.inTargetDensity = this.adjustTargetDensityForError(adjustedScaleFactor);
-    // options,inDensity = this.getDensityMultiplier(adjustedScaleFactor);
-    //}
-    // if (this.isScaling(options)){
-    //   options.inScaled = true;
-    // }else {
-    //   options.inDensity = options.inTargetDensity =0;
-    // }
-    //}
     let a: ESObject = { "targetWidth": powerOfTwoWidth, "targetHeight": powerOfTwoHeight }
     return a
   }
-
-  //decodeStream(imageReader:ImageReader, options: ESObject, callbacks: DecodeCallbacks, bitmapPool: ESObject) {
-  //if (!options.inJustDecodeBounds){
-  // callbacks.onObtainBounds();
-  // imageReader.stopGrowingBuffers();
-  //   }
-  // }
-  // getDimensions(imageReader: ImageReader, options: ESObject, decodeCallbacks: DecodeCallbacks, bitmapPool: ESObject):number[] {
-  //     options.inJustDecodeBounds = true;
-  //     this.decodeStream(imageReader, options, decodeCallbacks, bitmapPool);
-  //     options.inJustDecodeBounds =false;
-  //     return new Array(options.outWidth, options,outHeight);
-  //
-  // }
-
   highestOneBit(i: number): number {
     i |= (i >> 1);
     i |= (i >> 2);