ローカルの難解な画像を生成し、ローカルに画像の数字を記録して比較します.

1.   

Bitmap valimg = new CreateValiImage(this).onDraw();




public class CreateValiImage {
 private Paint paint;
 private Canvas canvas;
 private float width;
 private float height;
 private int retate = 6;
 private SharedUtils sharedUtils;

 private Context context;


 public CreateValiImage(Context context) {
 this.context = context;
 sharedUtils = new SharedUtils(context);
 paint = new Paint();
 width = context.getResources().getDimension(R.dimen.register_img_100);
 height = context.getResources().getDimension(R.dimen.frame_title);


 }


 public Bitmap onDraw() {
 Bitmap bitmap = Bitmap.createBitmap((int) width, (int) height, Bitmap.Config.ARGB_8888);
 canvas = new Canvas(bitmap);
 //   
 paint.setColor(Color.GRAY);
 RectF rectF = new RectF(0, 0, width, height);
 canvas.drawRect(rectF, paint);
 //    
 paint.setStrokeWidth(2);
 for (int i = 0; i < 7; i++) {
 paint.setColor(Color.rgb(getValiNum(0, 255), getValiNum(0, 255), getValiNum(0, 255)));
 canvas.drawLine(getValiNum(0, (int) width), getValiNum(0, (int) height), getValiNum(0, (int) width), getValiNum(0, (int) height), paint);
 }

 //   
 paint.setTextSize(60);
 paint.setStrokeWidth(1);
 StringBuffer stringBuffer = new StringBuffer();
 for (int i = 0; i < 4; i++) {
 paint.setColor(Color.rgb(getValiNum(0, 255), getValiNum(0, 255), getValiNum(0, 255)));
 canvas.rotate(getValiNum(0, retate), 0f, 0f);
 int item = getValiNum(0, 9);
 stringBuffer.append(item);
 canvas.drawText(item + "", 20 + (60 * i), 70, paint);
 canvas.rotate(-1 * getValiNum(0, retate), 0f, 0f);
 }
 sharedUtils.setValiNum(stringBuffer.toString());

 return bitmap;
 }

 public int getValiNum(int begin, int end) {
 Random random = new Random();
 return random.nextInt(end - begin) + begin;
 }


}