object FileUtils {
const val SIZETYPE_B = 1 //获取文件大小单位为B的double值
const val SIZETYPE_KB = 2 //获取文件大小单位为KB的double值
const val SIZETYPE_MB = 3 //获取文件大小单位为MB的double值
const val SIZETYPE_GB = 4 //获取文件大小单位为GB的double值
/**
* 字符串写入文件
*/
fun writeStringToFile(name: String,str: String,level:Int = 2):File?{
makeFile(name,level)?.let { file ->
try {
val mRandomAccessFile = RandomAccessFile(file, "rwd")
mRandomAccessFile.seek(file.length())
mRandomAccessFile.write(str.toByteArray())
mRandomAccessFile.close()
LogUtil.i("写入成功file: $file")
}catch (e:IOException){
LogUtil.e("写入错误: $e")
}
return@writeStringToFile file
}
return null
}
/**
* 读取文件String
*/
fun readStringToFile(file: File?,level:Int = 2):String?{
file?.let { path ->
try {
//如果设置插入了SD卡，并且应用程序具有访问SD卡的权限
// if (Environment.getExternalStorageState() == Environment.MEDIA_MOUNTED) {
val fis = FileInputStream(path)
val br = BufferedReader(InputStreamReader(fis))
val sb = StringBuilder("")
var line: String? = null
while (br.readLine().also { line = it } != null) {
sb.append(line)
}
br.close()
return sb.toString()
// }
} catch (e: IOException) {
e.printStackTrace()
LogUtil.e("读取错误: $e")
}
}
return null
}
/**
* 生成文件
* @author
* @param fileName 文件名
* @param level 文件目录等级 1:外部共享文件 *应用卸载之后不会删除 2：外部私有文件 3：内部存储文件
* @param type 要返回的存储目录的类型。应该是其中之一
* DIRECTORY_MUSIC, DIRECTORY_PODCASTS, DIRECTORY_RINGTONES,
* DIRECTORY_ALARMS, DIRECTORY_NOTIFICATIONS, DIRECTORY_PICTURES,
* DIRECTORY_MOVIES, DIRECTORY_DOWNLOADS, DIRECTORY_DCIM or DIRECTORY_DOCUMENTS.
* 不能为空
*/
fun makeFile(fileName: String,level:Int = 2,type:String = Environment.DIRECTORY_DOCUMENTS): File? {
var file: File? = null
val filePath = when(level) {
1 -> Environment.getExternalStoragePublicDirectory(type)
3 -> App().getContext().filesDir
else -> App().getContext().getExternalFilesDir(type)
}
filePath?.let {
makeDirectory(it)
}?: kotlin.run {
LogUtil.e("生成文件夹为空")
return null
}
try {
file = File(filePath,fileName)
if (!file.exists()) {
file.parentFile?.let { makeDirectory(it) }
file.createNewFile()
}
} catch (e: IOException) {
LogUtil.e( "生成文件错误: $e")
}
return file
}
//生成文件夹
private fun makeDirectory(file: File) {
try {
if (!file.exists()) {
file.mkdirs()
}
} catch (e: Exception) {
LogUtil.e( "生成文件夹错误: $e")
}
}
/**
* 获取文件指定文件的指定单位的大小
*
* @param filePath 文件路径
* @param sizeType 获取大小的类型1为B、2为KB、3为MB、4为GB
* @return double值的大小
*/
fun getFileOrFilesSize(filePath: String?, sizeType: Int): Double {
val file = File(filePath)
var blockSize: Long = 0
try {
blockSize = if (file.isDirectory) {
getFileSizes(file)
} else {
getFileSize(file)
}
} catch (e: java.lang.Exception) {
e.printStackTrace()
Log.e("获取文件大小", "获取失败!")
}
return formatFileSize(blockSize, sizeType)
}
/**
* 调用此方法自动计算指定文件或指定文件夹的大小
*
* @param filePath 文件路径
* @return 计算好的带B、KB、MB、GB的字符串
*/
fun getAutoFileOrFilesSize(filePath: String): String? {
val file = File(filePath)
var blockSize: Long = 0
try {
blockSize = if (file.isDirectory) {
getFileSizes(file)
} else {
getFileSize(file)
}
} catch (e: java.lang.Exception) {
e.printStackTrace()
Log.e("获取文件大小", "获取失败!")
}
return formatFileSize(blockSize)
}
/**
* 获取指定文件大小
*
* @param file
* @return
* @throws Exception
*/
@Throws(java.lang.Exception::class)
fun getFileSize(file: File): Long {
var size: Long = 0
if (file.exists()) {
var fis: FileInputStream? = null
fis = FileInputStream(file)
size = fis.available().toLong()
} else {
file.createNewFile()
Log.e("获取文件大小", "文件不存在!")
}
return size
}
/**
* 获取指定文件夹
*
* @param f
* @return
* @throws Exception
*/
@Throws(java.lang.Exception::class)
private fun getFileSizes(f: File): Long {
var size: Long = 0
val flist = f.listFiles()
for (i in flist.indices) {
size = if (flist[i].isDirectory) {
size + getFileSizes(flist[i])
} else {
size + getFileSize(flist[i])
}
}
return size
}
/**
* 转换文件大小
*
* @param fileS
* @return
*/
private fun formatFileSize(fileS: Long): String {
val df = DecimalFormat("#.00")
var fileSizeString = ""
val wrongSize = "0B"
if (fileS == 0L) {
return wrongSize
}
fileSizeString = if (fileS < 1024) {
df.format(fileS.toDouble()) + "B"
} else if (fileS < 1048576) {
df.format(fileS.toDouble() / 1024) + "KB"
} else if (fileS < 1073741824) {
df.format(fileS.toDouble() / 1048576) + "MB"
} else {
df.format(fileS.toDouble() / 1073741824) + "GB"
}
return fileSizeString
}
/**
* 转换文件大小,指定转换的类型
*
* @param fileS
* @param sizeType
* @return
*/
private fun formatFileSize(fileS: Long, sizeType: Int): Double {
val df = DecimalFormat("#.00")
var fileSizeLong = 0.0
when (sizeType) {
SIZETYPE_B -> fileSizeLong = java.lang.Double.valueOf(df.format(fileS.toDouble()))
SIZETYPE_KB -> fileSizeLong =
java.lang.Double.valueOf(df.format(fileS.toDouble() / 1024))
SIZETYPE_MB -> fileSizeLong =
java.lang.Double.valueOf(df.format(fileS.toDouble() / 1048576))
SIZETYPE_GB -> fileSizeLong =
java.lang.Double.valueOf(df.format(fileS.toDouble() / 1073741824))
else -> {}
}
return fileSizeLong
}
}
object LogUtil {
private var className: String? = null
private var methodName: String? = null
private var lineName = 0
fun v(message: String) {
if (BuildConfig.DEBUG) {
createLogName(Throwable().stackTrace)
Log.v(
"$className$methodName$lineName",
message
)
}
}
fun d(message: String) {
if (BuildConfig.DEBUG) {
createLogName(Throwable().stackTrace)
Log.d(
"$className$methodName$lineName",
message
)
}
}
fun i(message: String) {
if (BuildConfig.DEBUG) {
createLogName(Throwable().stackTrace)
Log.i(
"$className$methodName$lineName",
message
)
}
}
fun e(message: String) {
if (BuildConfig.DEBUG) {
createLogName(Throwable().stackTrace)
Log.e(
"$className$methodName$lineName",
message
)
}
}
private fun createLogName(stackTrace: Array<StackTraceElement>) {
className = "LogUtil "+stackTrace[1].className
methodName = stackTrace[1].methodName
lineName = stackTrace[1].lineNumber
}
}