我正在使用 Kotlin Android 应用程序访问 API 端点。在这个 API 调用中,我返回一个字节数组。我希望看到的是一种将字节数组转换为pdf文件并保存在手机下载文件夹中的方法。
private suspend fun getIDCard(sessionID: String?, carriermemid: String?): ByteArray? {
var results: String = ""
val postData = "{\"sessionid\": \" $sessionID\"}"
val outputStreamWriter: OutputStreamWriter
var byteArray: ByteArray? = null
val url: URL = URL(idURL + carriermemid)
val conn: HttpURLConnection = url.openConnection() as HttpURLConnection
try {
conn.setRequestProperty(apiConfig.typeKey, apiConfig.typeValueJSON)
conn.setRequestProperty("Accept", "application/json")
conn.setRequestProperty("sessionid", sessionID)
conn.requestMethod = apiConfig.methodGet
val responseCode: Int = conn.responseCode
println("Response Code :: $responseCode")
//returning 404
return if (responseCode == HttpURLConnection.HTTP_OK) {// connection ok
var out: ByteArrayOutputStream? = ByteArrayOutputStream()
val `in`: InputStream = conn.inputStream
var bytesRead: Int
val buffer = ByteArray(1024)
while (`in`.read(buffer).also { bytesRead = it } > 0) {
out!!.write(buffer, 0, bytesRead)
}
out!!.close()
byteArray = out.toByteArray()
return byteArray
} else {
return byteArray
}
} catch (ex: Exception) {
ex.printStackTrace()
} finally {
conn.disconnect()
}
return byteArray
}
最佳答案
这将获取Android下载目录并将字节数组写入PDF文件(假设字节数组包含PDF)。将 File.createTempFile 更改为您喜欢的任何文件(您不需要创建临时文件):
fun writeBytesAsPdf(bytes : ByteArray) {
val path = requireContext().getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS)
var file = File.createTempFile("my_file",".pdf", path)
var os = FileOutputStream(file);
os.write(bytes);
os.close();
}
您还必须将 android.permission.WRITE_EXTERNAL_STORAGE 添加到 list 中。
关于android - 将字节数组转换为pdf文件然后保存,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/61880335/