图片合成

public static Bitmap potoMix(int direction, Bitmap... bitmaps) {

if (bitmaps.length <= 0) {

return null;

}

if (bitmaps.length == 1) {

return bitmaps[0];

}

Bitmap newBitmap = bitmaps[0];

// newBitmap = createBitmapForFotoMix(bitmaps[0],bitmaps[1],direction);

for (int i = 1; i < bitmaps.length; i++) {

newBitmap = createBitmapForFotoMix(newBitmap, bitmaps[i], direction);

}

return newBitmap;

}

private static Bitmap createBitmapForFotoMix(Bitmap first, Bitmap second,

int direction) {

if (first == null) {

return null;

}

if (second == null) {

return first;

}

int fw = first.getWidth();

int fh = first.getHeight();

int sw = second.getWidth();

int sh = second.getHeight();

Bitmap newBitmap = null;

if (direction == 1) {

newBitmap = Bitmap.createBitmap(fw + sw, fh > sh ? fh : sh,

Config.ARGB_8888);

Canvas canvas = new Canvas(newBitmap);

canvas.drawBitmap(first, sw, 0, null);

canvas.drawBitmap(second, 0, 0, null);

} else if (direction == 2) {

newBitmap = Bitmap.createBitmap(fw + sw, fh > sh ? fh : sh,

Config.ARGB_8888);

Canvas canvas = new Canvas(newBitmap);

canvas.drawBitmap(first, 0, 0, null);

canvas.drawBitmap(second, fw, 0, null);

} else if (direction == 3) {

newBitmap = Bitmap.createBitmap(sw > fw ? sw : fw, fh + sh,

Config.ARGB_8888);

Canvas canvas = new Canvas(newBitmap);

canvas.drawBitmap(first, 0, sh, null);

canvas.drawBitmap(second, 0, 0, null);

} else if (direction == 4) {

newBitmap = Bitmap.createBitmap(sw > fw ? sw : fw, fh + sh,

Config.ARGB_8888);

Canvas canvas = new Canvas(newBitmap);

canvas.drawBitmap(first, 0, 0, null);

canvas.drawBitmap(second, 0, fh, null);

}

return newBitmap;

}