Add multiple images into a single pdf file with iText using java

Question

I have the following code but this code add only the last image into pdf.

    try {
        filePath = (filePath != null && filePath.endsWith(\".pdf\         


        

Answer 1

Android has the feature "PdfDocument" to achieve this,

class Main2Activity : AppCompatActivity() {

private var imgFiles: Array? = null
override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main2)

    imgFiles= arrayOfNulls(2)

    imgFiles!![0] = File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).toString() + "/doc1.png")
    imgFiles!![1] = File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).toString() + "/doc3.png")



    val file = getOutputFile(File(Environment.getExternalStorageDirectory().absolutePath)
            , "/output.pdf")

    val fOut = FileOutputStream(file)
    val document = PdfDocument()

    var i = 0
    imgFiles?.forEach {
        i++
        val bitmap = BitmapFactory.decodeFile(it?.path)
        val pageInfo = PdfDocument.PageInfo.Builder(bitmap.width, bitmap.height, i).create()
        val page = document.startPage(pageInfo)
        val canvas = page?.canvas
        val paint = Paint()
        canvas?.drawPaint(paint)
        paint.color = Color.BLUE;
        canvas?.drawBitmap(bitmap, 0f, 0f, null)
        document.finishPage(page)
        bitmap.recycle()
    }
    document.writeTo(fOut)
    document.close()        

}

private fun getOutputFile(path: File, fileName: String): File? {
    if (!path.exists()) {
        path.mkdirs()
    }
    val file = File(path, fileName)
    try {
        if (file.exists()) {
            file.delete()
        }
        file.createNewFile()

    } catch (e: Exception) {
        e.printStackTrace()
    }
    return file
}

}

finally enable the storage permission in manifest, this should works