Simple py script to check the change of apk size & check images can be optimize to shrink apk. Python2.7+ is needed. numpy and Pillow are needed if using apkimagecheck, pip can install it.
sudo pip install -i http://pypi.douban.com/simple/ Pillow
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sudo pip install -i http://pypi.douban.com/simple/ numpy
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Download it
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Modify apksizecheck/apk_tree. You can unzip the apk to specify the file. Formatting is encouraged. Weibo apk for example.
{ "AndroidManifest.xml":0, "classes.dex":0, "resources.arsc":0, "assets":{ "appmarket.jar":0, "browser.jar":0, "composer.jar":0, ... } }file:
... "AndroidManifest.xml":0 ...floder:
... "assets":{ ... } -
cd into the absolute path, run the apkcompare.py script with
'------------PyTest.py usage:------------' '-h, --help : print help message.' '-o, --old : input old apk file path' '-n, --new : input new apk file path' '-s, --single : input single apk file path, conflict with -o & -n' '-t, --top : show the top "n" file new/removed/changed in apk' '----------------------------------------'for example:
python apkcompare.py -o weibo540.apk -n weibo545.apk -
read output, weibo for example
sinasdk:apkcompare easytang$ python apkcompare.py -o weibo540.apk -n weibo545.apk -t 10 apk_old:weibo540.apk size:36.5 MB apk_new:weibo545.apk size:39.1 MB start to unzip apk old start to unzip apk new ============weibo540============== path:/resources.arsc | size: 1.6 MB | path:/assets | size: 79.4 MB | ...... ============weibo540============== ============weibo545============== path:/resources.arsc | size: 1.7 MB | path:/assets | size: 82.2 MB | ...... ============weibo545============== ============compare result============== file:/res/drawable-hdpi | old: 5.3 MB | new: 4.9 MB | changed: -447.9 KB ...... ============compare result============== ============new file============ file:/assets/MusicVideoAssets.zip | size: 1.6 MB ...... ============removed file============ ...... ============changed file============ ......
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Download it
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cd into the absolute path, run the apkimagecheck.py script with
'------------apkimagecheck.py usage:------------' '-h, --help : print help message.' '-f, --file : apk file' '-a, --alpha : not 0 (default)-> not check pic with no alpha; 0 -> check' '-v, --value : alpha check value, default 255(check pic without even a little alpha)' '-l, --limit : file size limit in byte (1024 -> 1K)' '-i, --ignore9 : not 0 (default)-> ignore .9; 0 -> check .9' '----------------------------------------'for example:
python apkimagecheck.py -f weibo545.apk -
read output, weibo for example
sinasdk:apksizecheck easytang$ python apkimagecheck.py -f weibo545.apk apk:weibo545.apk start to unzip apk ============ check size limit ================== IMAGE:/assets/offlinemap2.png size:80.2 KB IMAGE:/assets/effects/filter/pictureFilter/localFilter/filters/100/filter_icon.png size:61.8 KB IMAGE:/assets/effects/filter/pictureFilter/localFilter/filters/102/filter_icon.png size:61.8 KB ...... These files may be too large.(larger than 39.1 KB) ============ check size limit ================== ============ check image alpha ================== This is not image: weibo545/assets/offlinemap2.png IMAGE:/assets/effects/filter/pictureFilter/localFilter/filters/100/filter_icon.png IMAGE:/assets/effects/filter/pictureFilter/localFilter/filters/102/amber.png IMAGE:/assets/effects/filter/pictureFilter/localFilter/filters/102/amber_adjust.png ...... These 59 image(s) may be pngs with no alpha, considering jpeg? ============ check image alpha ==================
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Since using dict to compare, result will be not specific enough when file with the same name in different floders.for example``` ./lalalal.jar ./assets/lalalal.jar ```will only show one compare result -
build path
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unchecked on linux
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unable to check method count if not simply dex file or a dex in jar. (should modify method get_method_counts_in_file)
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Obfuscated resources may interrupt since each file's name changed.