AssetFileUtils.kt
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package com.tools.tts.utils
import android.content.Context
import android.util.Log
import java.io.File
import java.io.FileOutputStream
import java.io.IOException
/**
* 把Asset中的文件[fileName]复制到对应目录[dirPath]
* @param fileName
* @param dirPath
* @return 返回复制后的File
*/
fun copyAssetFileToDir(context: Context, fileName: String, dirPath: String): File? =
copyAssetFileToDir(context, fileName, dirPath, fileName)
/**
* 把Asset中的文件[sourceFileName]复制到对应目录[dirPath]并命名为[targetFileName]
* @param sourceFileName
* @param dirPath
* @return 返回复制后的File
*/
fun copyAssetFileToDir(
context: Context,
sourceFileName: String,
dirPath: String,
targetFileName: String
): File? {
try {
val targetPath = FileUtils.getFileByPath(dirPath) ?: return null
if (!FileUtils.createOrExistsDir(targetPath)) {
Log.i("TTS", "createOrExistsDir failed")
return null
}
val targetFilePath = targetPath.absolutePath + File.separator + targetFileName
val targetFile = File(targetFilePath)
if (targetFile.exists()) {
Log.i("TTS", "targetFile exists")
return targetFile
} else {
targetFile.createNewFile()
}
val fos = FileOutputStream(targetFile)
val temp = ByteArray(1024)
val inputStream = context.assets.open(sourceFileName)
var i: Int
i = inputStream.read(temp)
while ((i) > 0) {
fos.write(temp, 0, i)
i = inputStream.read(temp)
}
fos.close()
inputStream.close()
return targetFile
} catch (e: IOException) {
e.printStackTrace()
}
return null
}