try {
    File scannedDoc = await DocumentScannerFlutter.launch();
    // `scannedDoc` will be the image file scanned from scanner
} on PlatformException {
    // 'Failed to get document path or operation cancelled!';
}

try {
    File scannedDoc = await DocumentScannerFlutter.launch(source: ScannerFileSource.CAMERA); // Or ScannerFileSource.GALLERY
    // `scannedDoc` will be the image file scanned from scanner
} on PlatformException {
    // 'Failed to get document path or operation cancelled!';
}

try {
    File scannedDoc = await DocumentScannerFlutter.launchForPdf(source: ScannerFileSource.CAMERA); // Or ScannerFileSource.GALLERY
    // `scannedDoc` will be the PDF file generated from scanner
} on PlatformException {
    // 'Failed to get document path or operation cancelled!';
}

try {
    // Other Android Scanner labels customization 
    var androidLabelsConfigs = {
        ScannerConfigsAndroid.ANDROID_NEXT_BUTTON_TITLE : "Next Step",
        ScannerConfigsAndroid.ANDROID_SAVE_BUTTON_TITLE: "Save It",
        ScannerConfigsAndroid.ANDROID_ROTATE_LEFT_TITLE: "Turn it left",
        ScannerConfigsAndroid.ANDROID_ROTATE_RIGHT_TITLE: "Turn it right",
        ScannerConfigsAndroid.ANDROID_ORIGINAL_TITLE: "Original",
        ScannerConfigsAndroid.ANDROID_BMW_TITLE: "B & W"
    } 

    File scannedDoc = await DocumentScannerFlutter.launchForPdf(source: ScannerFileSource.CAMERA,androidConfigs: androidLabelsConfigs); 
    // `scannedDoc` will be the PDF file generated from scanner
} on PlatformException {
    // 'Failed to get document path or operation cancelled!';
}