BarLineChart-text-color

[ahmedbhd]

PR Checklist:

• [✓] I have tested this extensively and it does not break any existing behavior.
• [N/A] I have added/updated examples and tests for any new behavior.
• [N/A] If this is a significant change, an issue has already been created where the problem / solution was discussed: [N/A, or add link to issue here]

PR Description

• Minor code refactoring and minor ameliorations.

• Remove unneeded WRITE_EXTERNAL_STORAGE permission.
• Add change text color for BarLineChart.
• Code refactoring to fix some lint warnings.

• To support RTL configuration and be able to update text color of the BarLineChart.

PS: Since this project seems no longer supported, I've only tested the changes on the lib MPChartLib on a separate updated project.

[hannesa2]

This repository is dead, so I applied almost the same changes here https://github.com/AppDevNext/AndroidChart/pull/174