canvas教程

Android Bitmap转换以及图片的缩放

字号+ 作者:H5之家 来源:H5之家 2015-11-02 10:13 我要评论( )

Java代码 return BitmapFactory.decodeByteArray(b, 0 , b.length); Bitmap newbm = Bitmap.createBitmap(bm, 0 , 0 , width, height, matrix, true ); // 放在画布上 canvas.drawBitmap(newbm, 0 , 0 , paint); Bitmap newbmp = Bitmap.createBitmap(bitmap

Java代码

复制代码

 

  • return BitmapFactory.decodeByteArray(b, 0, b.length);
  • Bitmap newbm = Bitmap.createBitmap(bm, 0, 0, width, height, matrix,
  • true);
  • // 放在画布上
  • canvas.drawBitmap(newbm, 0, 0, paint);


  • Bitmap newbmp = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix,
  • final int color = 0xff424242;
  • final Paint paint = new Paint();
  • final Rect rect = new Rect(0,0, bitmap.getWidth(), bitmap.getHeight());
  • final RectF rectF = new RectF(rect);
  • paint.setAntiAlias(true);
  • canvas.drawARGB(0, 0,0, reflectionGap =4;
  • 0, height/2, width, height/2, matrix,false);
  • canvas.drawBitmap(bitmap, 0, 0, null);
  • canvas.drawBitmap(reflectionImage, 0, height + reflectionGap,null);
  • + reflectionGap, 0x70ffffff, 0x00ffffff, TileMode.CLAMP);

     

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