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LittleTrickster / PDF-Doc-Scan

Android PDF document scanning app
BSD 3-Clause "New" or "Revised" License
153 stars 17 forks source link
android jetbrains-compose kotlin opencv pdf scanner

readme

PDF-Doc-Scan

Android PDF document scanning app

Main point of this app is to scan or select existing PDF documents simply using intent or chooser. Other apps require payment to access their api/sdk or simply don't have a possible way to do it. So they rely on switching between an app ,file chooser and a scanner.

Alt text

Usage Example

Create ActivityResultLauncher

val pdfResultLauncher = registerForActivityResult(StartActivityForResult()) {
    val uri = it.data?.data
    if (it.resultCode == Activity.RESULT_OK && uri != null) {
//        context.contentResolver.openInputStream(uri)
    }
}

Or using Compose

val pdfResultLauncher = rememberLauncherForActivityResult(contract = StartActivityForResult()){
    val uri = it.data?.data
    if (it.resultCode == Activity.RESULT_OK && uri != null) {
//        context.contentResolver.openInputStream(uri)
    }
}

If you target Android 11 (API level 30) and up add query to your AndroidManifest.xml to make it visible for your app.

<queries>
<package android:name="com.littletrickster.scanner" />
</queries>

Query and launch directly

val intent = Intent()
intent.component = ComponentName("com.littletrickster.scanner", "com.littletrickster.scanner.ScanActivity")
intent.action = Intent.ACTION_PICK
intent.type = "application/pdf"

val pdfInfo = context.packageManager.queryIntentActivities(intent, 0)
if (pdfInfo.firstOrNull()?.activityInfo?.enabled == true) {
    pdfResultLauncher.launch(intent)
}

Comments

Made this as a prototype while learning Compose framework in late 2021