This library parses the GS1 fields stream according to the GS1 specification.
Getting the GS1 fields from a stream
val fields = FieldsAI.from(gs1Stream)FieldsAI.from will return an object with attributes
class FieldsAI(
val list: List<FieldAI>,
val hasError: Boolean
)Each field in the resulting list of fields List<FieldAI> will contain the following information
data class FieldAI(
val ai: AI,
val textAi: String,
val textBody: String,
val referencePos: Int,
val referenceLen: Int
)Where ai is the complete description of this GS1 AI tag,
textAi is the actual AI tag code from the stream,
textBody is the body content of this GS1 field,
referencePos is the starting position of this GS1 field in the source stream,
referenceLen is the length of the GS1 field in the source stream.
Example
val gs1Stream = "010061414199999610ABCDEF123456\u001D21654321FEDCBA\u001D310200123411140823"
val fields = FieldsAI.from(gs1Stream)
val gtin = fields.list.firstOrNull { it.ai.ai == "01" }
val gtinText: String? = gtin?.textBody
println("AI 01: product identity code = \"$gtinText\"")
val net = fields.list.firstOrNull { it.ai.ai == "310n" }
val netWeight: Float? = net?.formatBody()?.toFloatOrNull()
println("AI 310n: net weight = $netWeight kg")
val some = fields.list.firstOrNull {
with(it.ai.dataTitle) {
contains("net", true) && contains("weight", true)
}
}
println("Some net weight: AI group = ${some?.ai?.ai}, AI code = ${some?.textAi}, weight = ${some?.formatBody()} kg")Prints
AI 01: product identity code = "00614141999996"
AI 310n: net weight = 12.34 kg
Some net weight: AI group = 310n, AI code = 3102, weight = 12.34 kg
You can find more examples of usage in the unit tests inside the project.
Download the latest release files. Place .jar file(s) in the <project>/app/libs folder (in case of Android project).
Add dependensies to the build.gradle script of your app module.
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
...
}Run gradle sync. Done.
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