lostmemoryhp / poi-android

📈 Apache POI for Android

POI Android

POIA is a simple library enabling Apache POI usage on Android.

Table of Contents

• Installation
• Updating Apache POI
• Notes

Installation

Add JitPack to your repositories:

allprojects {
    repositories {
        // ...
        maven { url 'https://jitpack.io' }
    }
}

And the POIA dependency itself:

implementation "com.github.SUPERCILEX.poi-android:poi:$poiVersion"

If you're using proguard, also add:

implementation "com.github.SUPERCILEX.poi-android:proguard:$poiVersion"

If you want source code and documentation, add the real Apache POI dependency as compileOnly:

compileOnly "org.apache.poi:poi-ooxml:$poiVersion"

Updating Apache POI

If you need a newer version of Apache POI than is provided by this transpiler, updating is as simple as making a fork and changing a few lines of code:

1. Fork the repo and update Apache POI
   1. PSA: you can find Apache POI release notes here
2. Simply replace SUPERCILEX in the Gradle dependency with your own GitHub username
3. That's it, it's that simple! 🚀

Notes

XSSFWorkbook (*.xlsx) does not work on pre-L (API < 21) devices. A simple solution is to show the user some error message and gracefully downgrade to HSSFWorkbook (*.xls):

val workbook = if (isUnsupportedDevice) {
    showToast(getString(R.string.export_unsupported_device_rationale))
    HSSFWorkbook()
} else {
    XSSFWorkbook()
}

// Example unsupportedDevice property
val isUnsupportedDevice by lazy { VERSION.SDK_INT < VERSION_CODES.LOLLIPOP || isLowRamDevice }

Make sure to test your implementation thoroughly pre-L since HSSFWorkbook only supports a subset of the Workbook's APIs and might throw a UOE. Wikipedia even goes so far as to call it the "Horrible SpreadSheet Format" so consider yourself warned. 😁