ColorSniffer

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Get and export color codings for your apps.

This app is intended to be used as a companion app for Last Launcher, as a easy method to obtain custom while regular coloring of apps.

Download from the release page.

Usage

Depending on your opinion, there are two approaches. Please also read the Data format section for details of how the data are stored/presented.

To clipboard

You can copy/export the color scheme from the app to the clipboard, and paste/import it anywhere suitable.

By Intent (startActivityForResult())

On an app which requires the color scheme, you can do a startActivityForResult() call to the ryey.colorsniffer.FormActivity, and listen to its result (through onActivityResult()). The color scheme will be passed with the Intent.

Output data format

The exact plan to store the data differs by the method, but there are something in common:

• The launcherId is in the form of appId/activityId:
  • appId is the application id, extracted from ActivityInfo.packageName
  • activityId is the (fully-quantified) activity name, extracted from ActivityInfo.name
• The packageName is the ActivityInfo.packageName value
• The color is an Integer and corresponds to the value returned from ColorDrawable.color
  • It is in the form of AARRGGBB (bitwise)

Note the data formats may change, based on the discussion between the author of Last Launcher and me (watch the issues).

Clipboard

It uses TSV. The header of the table is (not included in the exported data):

launcherId	#HexColor

• The launcherId is defined above
• The #HexColor is the String hex representation of the color (returned from ColorDrawable.color) and formatted with #%X
  • It starts with #
  • It ought to be in CAPITAL
  • It ought to have 8 (hex) digits

Intent

The information is stored in a Bundle, using the following method:

• "color_bundle": Bundle where in the Bundle:
  • launcherId: color
  • "default_color_for_apps": color (int)

That means, the Bundle stores the colors of each app in a nested Bundle (with key color_bundle), using packageName as key and color as value; the Bundle also contains a key default_color_for_apps whose value is a color representing the default color (for all apps not in the list).

Potential future changes of data format

(Input) Accept the "current" color

Last Launcher may add (using the same way as ColorSniffer outputs) an extra Bundle in the Intent to specify the current app colors.

This is to be done after ColorSniffer has the ability to "ignore" apps.

(Output) Intent-based passing

For the Intent-based method, I'm hoping to change it to the following:

• "color_bundle": Bundle where in the Bundle:
  • launcherId: color
• "default_color_for_apps": color (int)

TODO

• Wait for Last Launcher to support importing from clipboard (or similar, changing accordingly)
• Provide a better UX (to be called from Last Launcher), possibily through startActivityForResult() and return the data through Intent?
• A more focused UI
• Support coloring apps by groups (user-defined or imported / from clipboard)
• Support a more intuitive workflow to set app colors (i.e. choose how and what to change in this app and then call Last Launcher to set colors)

License

Copyright 2020 renyuneyun (Rui Zhao)

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.