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how to load pdf form firebase in jetpack commpose

Annoying Ape answered on February 15, 2022 Popularity 1/10 Helpfulness 1/10

answer how to load pdf form firebase in jetpack commpose

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how to load pdf form firebase in jetpack commpose

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class PDFScreenViewModel: ViewModel() {
    val imageList = mutableStateListOf<ImageBitmap?>(null)
    
    private val storageRef = FirebaseStorage.getInstance().reference
    private val pathReference = storageRef.child("obras/${autorId}/${obraId}.pdf")
    private val localFile = File.createTempFile("obra", "pdf")
    
    init {
        load()
    }
    
    fun load() {
        pathReference.getFile(localFile).addOnSuccessListener {
            imageList.clear()
            if (it.task.isSuccessful) {
                val input = ParcelFileDescriptor.open(localFile, ParcelFileDescriptor.MODE_READ_ONLY)
                val renderer = PdfRenderer(input)

                for (i in 0 until renderer.pageCount) {

                    val page = renderer.openPage(i)
                    val bitmap =
                        Bitmap.createBitmap(Constants.width, Constants.height, Bitmap.Config.ARGB_8888)
                    page.render(bitmap, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY)
                    imageList.add(bitmap.asImageBitmap())
                    page.close()

                }
                renderer.close()
            }
        }
    }
}

@Composable
fun PDFScreen(obraId: ObraId, autorId: AuthorId) {
    val viewModel: PDFScreenViewModel = viewModel()
    LazyColumn(modifier = Modifier.fillMaxSize()) {
        items(items = viewModel.imageList) { imagen ->

            if (imagen != null) {

                Image(
                    modifier = Modifier
                        .fillMaxSize(), bitmap = imagen, contentDescription = "Prueba"
                )
            }
        }
    }
}

Popularity 1/10 Helpfulness 1/10 Language whatever

Source: stackoverflow.com

Tags: firebase jetpack load pdf-form whatever

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Contributed on Feb 15 2022

Annoying Ape

0 Answers Avg Quality 2/10

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how to load pdf form firebase in jetpack commpose

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@Composable
fun PDFScreen(obraId: ObraId, autorId: AuthorId) {

    val storageRef = FirebaseStorage.getInstance().reference
    val pathReference = storageRef.child("obras/${autorId}/${obraId}.pdf")
    val localFile = File.createTempFile("obra", "pdf")
    var imageList = remember { mutableStateListOf<ImageBitmap?>(null) }

    pathReference.getFile(localFile).addOnSuccessListener {
        imageList.clear()
        if (it.task.isSuccessful) {
            val input = ParcelFileDescriptor.open(localFile, ParcelFileDescriptor.MODE_READ_ONLY)
            val renderer = PdfRenderer(input)

            for (i in 0 until renderer.pageCount) {

                val page = renderer.openPage(i)
                val bitmap =
                    Bitmap.createBitmap(Constants.width, Constants.height, Bitmap.Config.ARGB_8888)
                page.render(bitmap, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY)
                imageList.add(bitmap.asImageBitmap())
                page.close()
                
            }
            renderer.close()
        }
    }

    LazyColumn(modifier = Modifier.fillMaxSize()) {
        items(items = imageList) { imagen ->

            if (imagen != null) {

                Image(
                    modifier = Modifier
                        .fillMaxSize(), bitmap = imagen, contentDescription = "Prueba"
                )
            }
        }
    }
}

Popularity 1/10 Helpfulness 1/10 Language whatever

Source: stackoverflow.com

Tags: firebase jetpack load pdf-form whatever

Link to this answer
Share Copy Link

Contributed on Feb 15 2022

Annoying Ape

0 Answers Avg Quality 2/10

how to load pdf form firebase in jetpack commpose

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