Android图片小结

图片缩放：

public static Drawable resizeImage(Drawable d, int w, int h) {        // load the origial Bitmap        Bitmap BitmapOrg = ((BitmapDrawable) d).getBitmap();        int width = BitmapOrg.getWidth();        int height = BitmapOrg.getHeight();        int newWidth = w;        int newHeight = h;        // calculate the scale        float scaleWidth = ((float) newWidth) / width;        float scaleHeight = ((float) newHeight) / height;        // create a matrix for the manipulation        Matrix matrix = new Matrix();        // resize the Bitmap        matrix.postScale(scaleWidth, scaleHeight);        Bitmap resizedBitmap = Bitmap.createBitmap(BitmapOrg, 0, 0, width,                        height, matrix, true);        // make a Drawable from Bitmap to allow to set the Bitmap        // to the ImageView, ImageButton or what ever        return new BitmapDrawable(resizedBitmap);	}

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public static Drawable resizeImage(Bitmap bitmap, int w, int h) {                // load the origial Bitmap                Bitmap BitmapOrg = bitmap;                int width = BitmapOrg.getWidth();                int height = BitmapOrg.getHeight();                int newWidth = w;                int newHeight = h;                // calculate the scale                float scaleWidth = ((float) newWidth) / width;                float scaleHeight = ((float) newHeight) / height;                // create a matrix for the manipulation                Matrix matrix = new Matrix();                // resize the Bitmap                matrix.postScale(scaleWidth, scaleHeight);                // if you want to rotate the Bitmap                // matrix.postRotate(45);                // recreate the new Bitmap                Bitmap resizedBitmap = Bitmap.createBitmap(BitmapOrg, 0, 0, width,                                height, matrix, true);                // make a Drawable from Bitmap to allow to set the Bitmap                // to the ImageView, ImageButton or what ever                return new BitmapDrawable(resizedBitmap);        }

?图片写字：

/**	 * 图片上画字	 * */	private Bitmap drawTextAtBitmap(Bitmap bitmap,String text){				int x = bitmap.getWidth();				int y = bitmap.getHeight();				// 创建一个和原图同样大小的位图		Bitmap newbit = Bitmap.createBitmap(x, y, Bitmap.Config.ARGB_8888);				Canvas canvas = new Canvas(newbit);				Paint paint = new Paint();				// 在原始位置0，0插入原图		canvas.drawBitmap(bitmap, 0, 0, paint);				paint.setColor(Color.parseColor("#dedbde"));				paint.setTextSize(20);				// 在原图指定位置写上字		canvas.drawText(text, 53 , 30, paint);				canvas.save(Canvas.ALL_SAVE_FLAG);				// 存储		canvas.restore();				return newbit;	}

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