如题：
46,96,39,58,45,44,59,34,95,126,33,94,105,114,124,47,73,61,60,62,42,108,92,49,116,43,106,63,118,41,40,76,102,123,55,125,74,84,99,120,122,93,91,117,110,115,89,111,70,121,101,50,97,86,107,51,104,90,67,52,80,53,65,113,88,112,69,37,48,85,100,98,54,75,83,57,35,72,119,71,36,79,103,68,56,82,81,109,66,38,78,87,77,64
package com.example.test;import android.content.Context;import android.graphics.Bitmap;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Paint.FontMetrics;import android.util.AttributeSet;import android.view.View;public class CharView extends View{ private Paint mPaint; private char mChar; private int mTextSize; private FontMetrics mFm = new FontMetrics(); private Canvas mDrawCanvas = new Canvas(); public CharView(Context context, AttributeSet attrs) { this(context, attrs, -1); } public CharView(Context context) { this(context, null, -1); } public CharView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); mPaint = new Paint(); mPaint.setColor(Color.RED); } public void setChar(char c) { mChar = c; mTextSize = measureChar(c, getMeasuredWidth()); invalidate(); } private int measureChar(char c, int maxWidth) { int result = 0; for (int i = 0; i < maxWidth * 2; i++) { mPaint.setTextSize(i); int textSize = (int)mPaint.measureText(String.valueOf(c)); mPaint.getFontMetrics(mFm); int textHeight = (int)(mFm.bottom - mFm.top); if (textSize > maxWidth || textHeight > maxWidth) { result = i; break; } } return result; } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); drawInner(canvas); } private void drawInner(Canvas canvas) { if (mTextSize == 0) { mTextSize = measureChar(mChar, getMeasuredWidth()); } mPaint.setTextSize(mTextSize); mPaint.getFontMetrics(mFm); int baseHeight = -(int)mFm.top; int x = (int)(getMeasuredWidth() - mPaint.measureText(String.valueOf(mChar))) / 2;// canvas.drawLine(0, baseHeight+mFm.ascent, 500, baseHeight+mFm.ascent, mPaint);// canvas.drawLine(0, baseHeight, 500, baseHeight, mPaint);// canvas.drawLine(0, baseHeight+mFm.descent, 500, baseHeight+mFm.descent, mPaint);// canvas.drawLine(0, baseHeight+mFm.bottom, 500, baseHeight+mFm.bottom, mPaint); canvas.drawText(String.valueOf(mChar), x, baseHeight, mPaint); } public void drawBitmap(Bitmap bitmap) { bitmap.eraseColor(Color.TRANSPARENT); mDrawCanvas.setBitmap(bitmap); drawInner(mDrawCanvas); }} @Override public void onClick(View v) { if (mBitmap == null) { mBitmap = Bitmap.createBitmap(mCharView.getMeasuredWidth(), mCharView.getMeasuredHeight(), Bitmap.Config.ARGB_8888); } for (int i = 33; i < 127; i++) { char c = (char)i; mCharView.setChar(c); mCharView.drawBitmap(mBitmap); int averGray = (int)(calAverageGray(mBitmap) * 100000); results.put(averGray, c); } List floats = new ArrayList (); floats.addAll(results.keySet()); Collections.sort(floats); StringBuilder sb = new StringBuilder(); for (Integer f : floats) { Log.d("Result", results.get(f)+" : "+f); sb.append(String.valueOf((int)results.get(f))).append(","); } Log.d("Result", "result = "+sb.toString()); } private float calAverageGray(Bitmap b) { int width = b.getWidth(); int height = b.getHeight(); int noneWhiteCount = 0; for(int i = 0; i < height; i++) { for (int j = 0; j < width; j++) { int color = b.getPixel(j, i); int r = Color.red(color); int g = Color.green(color); int bl = Color.blue(color);// Log.d("Pix", "pos = "+"("+"j, "+"i"+")"+"rgb = "+r+", "+g+" , "+bl); if (r > 100) { noneWhiteCount++; } } } return noneWhiteCount / (float)(width * height); } private Map results = new HashMap (); private Bitmap mBitmap; @Override public void onClick(View v) { String[] dics = dic.split(","); int dicCount = dics.length; File file = new File(Environment.getExternalStorageDirectory(), "test.jpg"); Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath()); int width = bitmap.getWidth(); int height = bitmap.getHeight(); int dimen = 10; int dimenY = (int)(height / (float)width * dimen); StringBuilder sb = new StringBuilder(); for (int i = 0; i < height; i+= dimen) { for (int j = 0; j < width; j+= dimenY) { int w = dimen > width - j ? width - j : dimen; int h = dimenY > height - i ? height - i : dimenY; Bitmap temp = Bitmap.createBitmap(bitmap, j, i, w, h); float averGray = calAverageGray(temp); temp.recycle(); if (averGray < 128) { int pos = (int)((128 - averGray) / 128f * dicCount); pos = pos > dicCount - 1 ? dicCount - 1 : pos; int charInt = Integer.decode(dics[pos]); sb.append((char)charInt); } else { sb.append(' '); } } sb.append("\n"); } Log.e("HA", sb.toString()); } private float calAverageGray(Bitmap b) { int width = b.getWidth(); int height = b.getHeight(); float grayCount = 0; for(int i = 0; i < height; i++) { for (int j = 0; j < width; j++) { int color = b.getPixel(j, i); int r = Color.red(color); int g = Color.green(color); int bl = Color.blue(color); grayCount +=(r * 19595 + g * 38469 + bl * 7472) >> 16; } } return grayCount / (width * height); } private String dic = "46,96,39,58,45,44,59,34,95,126,33,94,105,114,124,47,73,61,60,62,42,108,92,49,116,43,106,63,118,41,40,76,102,123,55,125,74,84,99,120,122,93,91,117,110,115,89,111,70,121,101,50,97,86,107,51,104,90,67,52,80,53,65,113,88,112,69,37,48,85,100,98,54,75,83,57,35,72,119,71,36,79,103,68,56,82,81,109,66,38,78,87,77,64";