desc:compose excel相关
xiaowusky
2 years ago
parent
e0feb94d2a
commit
e28d3afb95
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package com.yinuo.safetywatcher
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import android.app.Application
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import com.lztek.toolkit.Lztek
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import com.yinuo.safetywatcher.utils.LztekUtil
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class App : Application() {
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override fun onCreate() {
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super.onCreate()
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LztekUtil.setObject(Lztek.create(this))
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}
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}
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package com.yinuo.safetywatcher.ui.cloud
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import androidx.compose.foundation.layout.Arrangement
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import androidx.compose.foundation.layout.Column
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import androidx.compose.foundation.layout.fillMaxSize
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import androidx.compose.material3.Button
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import androidx.compose.material3.Text
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import androidx.compose.runtime.Composable
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import androidx.compose.ui.Alignment
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import androidx.compose.ui.Modifier
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import androidx.compose.ui.platform.LocalContext
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import androidx.lifecycle.viewmodel.compose.viewModel
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@Composable
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fun CloudView() {
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// rememberLauncherForActivityResult(contract = ActivityResultContracts.OpenDocumentTree(), onResult ={} )
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Column(
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modifier = Modifier.fillMaxSize(),
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verticalArrangement = Arrangement.Center,
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horizontalAlignment = Alignment.CenterHorizontally
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) {
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val context = LocalContext.current;
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val viewModel: CloudViewModel = viewModel()
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Button(onClick = { viewModel.exportExcel(context) }) {
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Text(text = "导出数据")
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}
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}
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}
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package com.yinuo.safetywatcher.ui.cloud
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import android.content.Context
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import androidx.lifecycle.ViewModel
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import com.yinuo.safetywatcher.xls.SimpleCellValue
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import com.yinuo.safetywatcher.xls.utils.ExcelUtils
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class CloudViewModel : ViewModel() {
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fun exportExcel(context: Context){
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val allData: MutableList<List<SimpleCellValue>> = ArrayList()
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val row1: MutableList<SimpleCellValue> = ArrayList()
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row1.add(SimpleCellValue("5.22"))
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row1.add(SimpleCellValue("1"))
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row1.add(SimpleCellValue("2"))
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row1.add(SimpleCellValue("3"))
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val row2: MutableList<SimpleCellValue> = ArrayList()
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row2.add(SimpleCellValue("5.23"))
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row2.add(SimpleCellValue("4"))
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row2.add(SimpleCellValue("5"))
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row2.add(SimpleCellValue("6"))
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allData.add(row1)
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allData.add(row2)
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ExcelUtils.writeStringListToExcel(allData, context)
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}
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}
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package com.yinuo.safetywatcher.utils
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import com.lztek.toolkit.Lztek
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object LztekUtil {
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private var mLztek: Lztek? = null;
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fun setObject(value: Lztek) {
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mLztek = value
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}
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fun getLztek(): Lztek {
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return mLztek!!
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}
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}
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package com.yinuo.safetywatcher.xls
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interface ICellValue {
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fun getValue(): String
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}
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package com.yinuo.safetywatcher.xls
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data class SimpleCellValue(val content: String) : ICellValue {
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override fun getValue(): String {
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return content
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}
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}
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package com.yinuo.safetywatcher.xls.utils
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import android.content.Context
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import android.util.Log
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import com.yinuo.safetywatcher.xls.ICellValue
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import com.yinuo.safetywatcher.R
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import jxl.Workbook
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import jxl.WorkbookSettings
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import jxl.write.Label
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import jxl.write.WritableCellFormat
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import jxl.write.WritableFont
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import jxl.write.WritableWorkbook
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import jxl.write.WriteException
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import java.io.File
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import java.io.FileInputStream
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import java.io.InputStream
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/**
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* excel表格工具
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*/
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object ExcelUtils {
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private const val TAG: String = "ExcelUtils"
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private const val UTF8_ENCODING = "UTF-8"
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private var arial12format: WritableCellFormat? = null
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private fun format() {
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try {
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val writableFont = WritableFont(WritableFont.ARIAL, 12)
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arial12format = WritableCellFormat(writableFont)
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arial12format?.setBorder(jxl.format.Border.ALL, jxl.format.BorderLineStyle.THIN)
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} catch (exception: WriteException) {
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Log.e(TAG, "format() e==" + exception.message)
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}
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}
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private fun makeDir(filePath: File) {
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if (!filePath.parentFile.exists()) {
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makeDir(filePath.parentFile)
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}
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filePath.mkdir()
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}
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private fun deleteByPath(filePath: String) {
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val file = File(filePath)
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if (file.exists()) {
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if (file.isFile || file.isDirectory) {
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file.delete()
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}
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}
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}
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private fun deleteExistFile(excelFilePath: String) {
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val file = File(excelFilePath)
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if (file.exists()) {
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val files: Array<File> = file.listFiles()
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for (i in files.indices) {
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deleteByPath(files[i].absolutePath)
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}
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}
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}
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private fun initExcel(
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allColumNames: Array<String>,
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filePath: String,
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sheetName: String
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) {
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format()
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var workbook: WritableWorkbook? = null
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try {
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val file = File(filePath)
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if (!file.exists()) {
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file.createNewFile()
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}
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workbook = Workbook.createWorkbook(file)
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val sheet = workbook.createSheet(sheetName, 0)
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allColumNames.forEachIndexed { index, s ->
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sheet.addCell(Label(index, 0, s, arial12format))
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}
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workbook.write()
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} catch (e: Exception) {
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Log.e(TAG, "initExcel e==" + e.message)
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} finally {
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try {
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workbook?.close()
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} catch (e: Exception) {
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Log.e(TAG, "initExcel e==" + e.message)
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}
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}
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}
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fun writeStringListToExcel(
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allRowsData: List<List<ICellValue>>,
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context: Context
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): Boolean {
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val fileName = PathUtils.getNowTimeFormat(PathUtils.DATE_TO_STRING_LONG_PATTERN) + ".xls"
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PathUtils.EXCEL_EXPORT_NAME = fileName
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val filePath =
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PathUtils.getUDiskPath() + PathUtils.EXCEL_EXPORT_PATH + PathUtils.EXCEL_EXPORT_NAME
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deleteExistFile(PathUtils.getUDiskPath() + PathUtils.EXCEL_EXPORT_PATH)
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makeDir(File(PathUtils.getUDiskPath() + PathUtils.EXCEL_EXPORT_PATH))
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val columns = context.resources.getStringArray(R.array.excel_column)
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initExcel(columns, filePath, PathUtils.SHEET_NAME) //需要写入权限
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if (PathUtils.isListEmpty(allRowsData) || context == null)
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return false
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var writebook: WritableWorkbook? = null
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var inputStream: InputStream? = null
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try {
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val setEncode = WorkbookSettings()
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setEncode.encoding = UTF8_ENCODING
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inputStream = FileInputStream(File(filePath))
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val workbook = Workbook.getWorkbook(inputStream)
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val file = File(filePath)
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writebook = Workbook.createWorkbook(file, workbook)
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val sheet = writebook.getSheet(0)
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for ((row, item) in allRowsData.withIndex()) {
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item.forEachIndexed { index, cellValue ->
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sheet.addCell(Label(index, row + 1, cellValue.getValue(), arial12format))
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}
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}
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writebook.write()
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Log.i(TAG, "Excelel 写入成功")
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return true
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} catch (e: Exception) {
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Log.e(TAG, "writeStringListToExcel() e==" + e.message)
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} finally {
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writebook?.close()
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inputStream?.close()
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}
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return false
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}
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}
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package com.yinuo.safetywatcher.xls.utils
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import android.content.Context
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import android.os.Environment
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import com.yinuo.safetywatcher.utils.LztekUtil
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import java.text.SimpleDateFormat
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import java.util.Date
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import java.util.Locale
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/**
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* 基础工具类
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*/
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object PathUtils {
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private const val TAG: String = "BaseUtils"
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const val SHEET_NAME = "表格1"
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const val EXCEL_EXPORT_PATH = "/ExportExcel/"
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lateinit var EXCEL_EXPORT_NAME: String
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const val DATE_TO_STRING_LONG_PATTERN: String = "yyyy_MM_dd_HH_mm_ss"
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fun <T> isListEmpty(list: List<T>?): Boolean {
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return list == null || list.isEmpty()
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}
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/**
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* 获取应用中文件存储
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*/
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fun getExternalStoragePath(context: Context): String? {
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return context.getExternalFilesDir(null)?.path
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}
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/**
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* 获取U盘存储
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*/
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fun getUDiskPath(): String {
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return LztekUtil.getLztek().usbStoragePath
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}
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fun getExternalStorageDirectory(context: Context): String? {
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return Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM).path
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}
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/**
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* 外部存储目录
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*/
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fun getExternalStorageDirectory(): String? {
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return Environment.getExternalStorageDirectory().absolutePath
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}
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fun getNowTimeFormat(dateToStringLongPattern: String): String {
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return SimpleDateFormat(dateToStringLongPattern, Locale.ROOT).format(Date());
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}
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}
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<resources>
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<string name="app_name">app-compose</string>
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<string-array name="excel_column">
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<item>时间</item>
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<item>属性</item>
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<item>值</item>
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<item>单位</item>
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</string-array>
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</resources>
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