Hi I am trying to convert a hashmap where hashmap =
private var Sdata:MutableMap<String, MutableList> = mutableMapOf<String, MutableList>()
Sdata currently looks like the picture below:
https://i.stack.imgur.com/UNLCR.png[enter link description here]1
My code to convert my hashmap to csv looks like this: #Credit to Михаил Нафталь
binding.btnSave.setOnClickListener() {
Sdata = viewModel.savehash
val csv = File(this.filesDir, "test.csv")
val valuesSeparator = ","
val lineTerminator = "\r\n"
val rowTerminator = "["
//write header, overwrite file if it has existed
csv.writeText(
Sdata.keys.joinToString(
separator = valuesSeparator,
postfix = lineTerminator
)
)
//write rows
val nRows = Sdata.values.maxOf { it.size } // if size of all lists are not equal
//val nRows = Sdata.values.first().size // if size of all lists are equal
for (i in 0 until nRows) {
val row = Sdata.values
//.map { it[i] } // if it's guaranteed that size of all lists is the same
.map { it.getOrElse(i) { "" } } // otherwise
.joinToString(separator = valuesSeparator, postfix = lineTerminator)
csv.appendText(row)
}
Log.d(TAG, "CSV VIEW: $Sdata")
Toast.makeText(this, "Data Saved to Documents", Toast.LENGTH_SHORT).show()
}
I was able to get my csv file successfully but the data format is off:
CSV File 2:
https://i.stack.imgur.com/xSb0U.png
How should I fix This? Any help would be greatly appreciated.
Related
Halo i am trying to create barchart using MPAndroid Library but icant how to use it when i send json from php
echo json_encode($output);
and the output contain 2 data that is hari and total_jual
$rowdata[]=array('hari'=>$row['hari'],
'total_jual'=>$row['total_jual']);
in android studio i am using volley to catch jason
for(i in 0 until arr.length()){
val obj = arr.getJSONObject(i)
dataListPenjualan.add(
ClassPenjualan(
obj.getString("hari").toString(),
obj.getString("total_jual").toString()
)
)
val entries = ArrayList<BarEntry>()
val barDataSet = BarDataSet(entries, "Cells")
val labels = ArrayList<String>()
labels.add(dataListPenjualan[i].hari)
//barDataSet.setColors(ColorTemplate.COLORFUL_COLORS)
barDataSet.color = resources.getColor(R.color.black)
chartPemasukan.animateY(5000)
}
the data i catch using volley i send it into class
this is my class
data class ClassPenjualan (val hari:String,
val totalPenjualan:String)
how can i create barchart using data i catch from php. I already try to search but many explanation is in java.
this is what i try
val entries = ArrayList<BarEntry>()
entries.add(BarEntry(dataListPenjualan[i].hari.toFloat(), i))
val barDataSet = BarDataSet(entries, "Cells")
val labels = ArrayList<String>()
labels.add(dataListPenjualan[i].hari)
val data = BarData(labels, barDataSet)
chartPemasukan.data = data // set the data and list of lables into chart
chartPemasukan.setDescription("Set Bar Chart Description") // set the description
//barDataSet.setColors(ColorTemplate.COLORFUL_COLORS)
barDataSet.color = resources.getColor(R.color.black)
chartPemasukan.animateY(5000)
Your code entries.add(BarEntry(dataListPenjualan[i].hari.toFloat(), i)) is wrong.
just try entries.add(BarEntry(i,dataListPenjualan[i].hari.toFloat()))
below code is my demo
val values = ArrayList<BarEntry>()
var i = 0
while (i < xValueCount) {
val yValue = (Math.random() * (100)).toFloat()
values.add(BarEntry(i.toFloat(), yValue))
i++
}
val set1: BarDataSet
if (chart.data != null &&
chart.data.dataSetCount > 0) {
set1 = chart.data.getDataSetByIndex(0) as BarDataSet
set1.values = values
chart.data.notifyDataChanged()
chart.notifyDataSetChanged()
} else {
set1 = BarDataSet(values, "speed")
//绘制图标
set1.setDrawIcons(false)
//绘制数值
set1.setDrawValues(false)
set1.color = ContextCompat.getColor(mContext, getBarHighColorByDataType(false))
set1.highLightColor = ContextCompat.getColor(mContext, getBarHighColorByDataType(true))
set1.highLightAlpha = 255
val dataSets = ArrayList<IBarDataSet>()
dataSets.add(set1)
val data = BarData(dataSets)
data.setValueTextSize(10f)
//barWith = 柱宽度/（柱宽度+旁边一处空白宽度）
data.barWidth = when (dataType) {
0 -> 0.37f
1 -> 0.52f
2 -> 0.3f
else -> 0.43f
}
chart.data = data
}
I am creating an app where users will upload pdf or doc files.
I have used default file chooser which returns Uri , now i need to upload those selected files to server
Its working fine upto android 9 ,i am facing issues in android 10 and 11 (i have used android:requestLegacyExternalStorage="true" for android 10 )
val intent = Intent(Intent.ACTION_OPEN_DOCUMENT)
.apply {
addCategory(Intent.CATEGORY_OPENABLE)
type = "*/*"
putExtra(Intent.EXTRA_MIME_TYPES, supportedDocumentTypes.keys.toTypedArray())
}
resultLauncher.launch(intent)
In Activity Result
if (data != null) {
var path = ""
val id = data.data?.lastPathSegment!!
val selection = "_id=?"
if (id.startsWith("msf:") && Build.VERSION.SDK_INT == Build.VERSION_CODES.Q) {
path = FileHelper(requireContext()).getRealPathFromUri(data.data!!.toString()
.replace("msf:","").toUri())!!
}else if (Build.VERSION.SDK_INT == Build.VERSION_CODES.Q){
path = FileHelper(requireContext()).getRealPathFromUri(data.data!!)!!
}else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
path = getDataColumn(context, MediaStore.Downloads.EXTERNAL_CONTENT_URI,
selection, arrayOf(getPath(data.data!!)))
} else {
data.data?.also { uri ->
path = FileHelper(requireContext()).getRealPathFromUri(uri)!!
}
}
Log.e("Doc Path ::",path)
AppUtils.CustomToast(requireActivity(),path)
uploadDocs(path)
}
For getting Document_ID
private fun getPath(uri : Uri) : String {
val contentResolver = requireActivity().applicationContext.contentResolver
val takeFlags: Int = Intent.FLAG_GRANT_READ_URI_PERMISSION or
Intent.FLAG_GRANT_WRITE_URI_PERMISSION
// Check for the freshest data.
contentResolver.takePersistableUriPermission(uri, takeFlags)
val cursor: Cursor? = contentResolver.query(
uri, null, null, null, null, null)
var id = ""
cursor?.use { cursor1 ->
if (cursor1.moveToFirst()) {
val displayName: String = cursor1.getString(cursor1.getColumnIndex(OpenableColumns.DISPLAY_NAME))
Log.i(TAG, "Display Name: $displayName")
val names = cursor1.columnNames.joinToString(",") { it }
Log.e("names ^^^^^",names)
val sizeIndex: Int = cursor1.getColumnIndex(OpenableColumns.SIZE)
val size: String = if (!cursor1.isNull(sizeIndex)) {
cursor1.getString(sizeIndex)
} else { "Unknown" }
Log.i(TAG, "Size: $size")
id = cursor1.getString(cursor1.getColumnIndex(cursor1.columnNames[0]))
Log.e("DocId",id)
}
}
return id
}
Uploading file to server using Retrofit
val builder = MultipartBody.Builder()
builder.setType(MultipartBody.FORM)
val file = File(docPaths)
builder.addFormDataPart("documents", file.name,
RequestBody.create("multipart/form-data".toMediaTypeOrNull(), file))
val requestBody: MultipartBody = builder.build()
I am expecting some code for getting file to upload to server
Thanks In Advance
I use this function to compress images:
private fun takeScreenshot() {
val now = Date()
DateFormat.format("yyyy-MM-dd_hh:mm:ss", now)
val now2= now.toString().split(" ")
try {
// image naming and path to include sd card appending name you choose for file
val mPath: String =
getExternalFilesDir(null).toString().toString() + "/" + now2 + ".png"
Log.d("path",mPath)
// create bitmap screen capture
val v1 = window.decorView.rootView
v1.isDrawingCacheEnabled = true
val bitmap = Bitmap.createBitmap(v1.drawingCache)
v1.isDrawingCacheEnabled = false
val imageFile = File(mPath)
val outputStream = FileOutputStream(imageFile)
val quality = 100
bitmap.compress(Bitmap.CompressFormat.PNG, quality, outputStream)
outputStream.flush()
outputStream.close()
} catch (e: Throwable) {
// Several error may come out with file handling or DOM
e.printStackTrace()
}
}
And after do it,the result is a png file with no dimensions,i can't open it and view on laptop but can view on phone:
How to add dimensions?
I'm making an app which will download a .zip file, unzip it and finally take the .srt file (which was zipped) and put it as subtitle file in exoplayer movie.
My problem
The file has greek letters inside and when I put it as a subtitle file I only see corrupted letters
What have I tried
Below is the code to unzip the file
fun writeZipAndUnZip(subtitlesLinks: ArrayList<String>, context: Context, body: ResponseBody?) {
if (body == null) { return }
val file = File(getSubsDirectory(), subtitlesLinks.first())
var inputStream: InputStream? = null
var outputStream: OutputStream? = null
try {
val fileReader = ByteArray(4096)
inputStream = body.byteStream()
outputStream = FileOutputStream(file)
while (true) {
var read = inputStream.read(fileReader)
if (read == -1) {
break
}
outputStream.write(fileReader, 0, read)
}
outputStream.flush()
unzip(context)
} catch (e: IOException) {
return
} finally {
inputStream?.close()
outputStream?.close()
}}
fun unzip(context: Context) {
val unzipPath = getSubsDirectory()
var count: Int
val buffer = ByteArray(4096)
val subFile = File(getSubsDirectory()).listFiles()?.first() ?: return
try {
val stream = FileInputStream(subFile.absolutePath)
ZipInputStream(stream).use { zis ->
var ze = ZipEntry("")
while (zis.nextEntry?.also { ze = it } != null) {
var fileName = ze.name
fileName = fileName.substring(fileName.indexOf("/") + 1)
val file = File(unzipPath, fileName)
val dir = if (ze.isDirectory) file else file.parentFile
if (!dir.isDirectory && !dir.mkdirs())
throw FileNotFoundException("Invalid path: " + dir.absolutePath)
if (ze.isDirectory) continue
val fileOutput = FileOutputStream(file)
try {
while (zis.read(buffer).also { count = it } != -1)
fileOutput.write(buffer, 0, count)
} catch (e: IOException) {
Timber.tag("ErrorZip").d(e.localizedMessage)
} finally {
val fileOutput = context.openFileOutput(fileName, Context.MODE_PRIVATE)
fileOutput.close()
}
}
}
} catch (e: IOException) {
Timber.tag("ErrorZip").d(e.localizedMessage)
}}
Here is the code I put subtitle in exoplayer
val subtitleFormat = Format.createTextSampleFormat(null, MimeTypes.APPLICATION_SUBRIP, Format.NO_VALUE, "el")
val subtitleSource = SingleSampleMediaSource(File(Utils.getSubsDirectory()).listFiles()!![1].toUri(), dataSourceFactory, subtitleFormat, C.TIME_UNSET)
mediaSource = MergingMediaSource(buildMediaSource(videoUrl), subtitleSource)
I also tried to resave the subtitle with Utf-8 encoding but I get some characters in greek and the most missing or incorrect using this code
fun encode() {
val charset = "UTF8"
val subFile = File(getSubsDirectory()).listFiles()!![1] ?: return
val inputStream: InputStream = subFile.absoluteFile.inputStream()
val inputString = inputStream.bufferedReader().use { it.readText() }
val writer = OutputStreamWriter(FileOutputStream(File(getSubsDirectory(), "subs.srt")), charset)
writer.write(inputString)
writer.close()
}
Probably the file you are trying to read is in a different encoding than the System default (Android uses utf-8). You need to read the file at the 'correct' encoding format (for Greek usually is Windows-1253) and then save it to utf-8.
I have a question about saving Arrays in Apple's new programming language Swift. In Objective-C I saved data with NSFileManager... but this doesn't work anymore in Swift. So I wanted to ask how I should save an array WITHOUT using NSUserDefaults which isn't really suited for storing a big amount of data. I would really much appreciate any help :]
First (if your array is not of string type) change it to String:
var notStringArray = [1, 2, 3, 4]
var array: [String] = []
for value in notStringArray{
array.append(String(value))
}
Then reduce the array to one string:
var array = ["1", "2", "3", "4", "5"] //Ignore this line if your array wasn't of type String and you did the step above
var stringFromArray = reduce(array, "") { $0.isEmpty ? $1 : "\($0)\n\($1)" }
This create an string that looks like this:
"1
2
3
4
5"
And then to write and read a file add this class at the top of your file:
class File {
class func open (path: String, utf8: NSStringEncoding = NSUTF8StringEncoding) -> String? {
var error: NSError? //
return NSFileManager().fileExistsAtPath(path) ? String(contentsOfFile: path, encoding: utf8, error: &error)! : nil
}
class func save (path: String, fileContent: String, utf8: NSStringEncoding = NSUTF8StringEncoding) -> Bool {
var error: NSError? //
return fileContent.writeToFile(path, atomically: true, encoding: utf8, error: &error)
}
}
(Don't forget to import UIKit)
To save to a file:
let didSave = File.save("DirectoryOfFile", content: stringFromArray)
if didSave {
println("file saved")
} else {
println("error saving file")
}
To get it back:
var stringFromFile = ""
if let loadData = File.open("DirectoryOfFile") {
stringFromFile = loadData
} else {
println("error reading file")
}
To put it back in an array:
var newArray: [String] = [] //Creates empty string array
newArray = stringFromFile.componentsSeparatedByString("\n")
And there you have it