在給Android遊戲或app打包時，經常會遇到有幾十上百個渠道的問題。不同的渠道app的名字不一樣，icon也可能不一樣。程式設計師總是懶的，最煩手動去改來改去。因此用Python寫了一個自動裁剪不同尺寸的icon，並儲存到Android對應的icon目錄下的指令碼。

    這裡貼下程式碼，留個腳印。日後直接拷貝使用。（記得安裝下pillow第三方庫。pip install pillow）

#!/usr/bin/python
# -*- coding:utf-8 -*-

# 此指令碼功能：根據一張大的icon自動生成不同尺寸的icon，並儲存到對應目錄下

import os
from PIL import Image

# 原始icon檔名，必須與指令碼同目錄下
ORIGIN_ICON_PATH = "icon.png"
# 輸出icon的目錄和icon檔名
OUTPUT_ICON_PATH = "proj.android/res/drawable-"
OUTPUT_ICON_NAME = "icon"
ICON_SIZE_DICT = {"ldpi": (36, 36), "mdpi": (48, 48), "hdpi": (72, 72), "xhdpi": (96, 96), "xxhdpi": (114, 114)}


def make_more_images():
    if not os.path.isfile(ORIGIN_ICON_PATH) and not os.path.exists(ORIGIN_ICON_PATH):
        print ORIGIN_ICON_PATH + " is NOT exist."
        return
    im = Image.open(ORIGIN_ICON_PATH)
    print "origin size: " + im.size.__str__()
    if im.size[0] != im.size[1]:
        print "width and height MUST be same."
        return
    if im.size[0] < ICON_SIZE_DICT.get("xxhdpi")[0]:
        print "image size is TOO small."
        return
    for dpi, size in ICON_SIZE_DICT.items():
        path = OUTPUT_ICON_PATH + dpi
        if not os.path.isdir(path):
            print "make [" + dpi + ": " + size.__str__() + "] fail. why: "\
                  + os.path.basename(path) + " is invalid folder."
            continue
        path = path + "/" + OUTPUT_ICON_NAME + ".png"
        if os.path.isfile(path) and os.path.exists(path):
            os.remove(path)
        im.resize(size).save(path, "PNG")
        print "make [" + dpi + ": " + size.__str__() + "] success."


if __name__ == "__main__":
    print '======MAKE ICON START======'
    make_more_images()
    print '=======MAKE ICON END======='
    os.system("pause")