public static string?Exec(string command)
{
var runtime = Java.Lang.Runtime.GetRuntime();
if (runtime == null)
{
throw new NullReferenceException("Java.Lang.Runtime.GetRuntime");
}
try
{
var command2 = new Java.Lang.String(command);
using var process = runtime.Exec("sh");
if (process != null)
{
using var bufferedOutputStream = new Java.IO.BufferedOutputStream(process.OutputStream);
using var bufferedInputStream = new Java.IO.BufferedInputStream(process.InputStream);
bufferedOutputStream.Write(command2.GetBytes());
bufferedOutputStream.Write('\n');
bufferedOutputStream.Flush();
bufferedOutputStream.Close();
process.WaitFor();
var outputStr = GetStrFromBufferInputSteam(bufferedInputStream);
return(outputStr);
}
}
catch (Java.Lang.Throwable t)
{
t.PrintStackTraceWhenDebug();
}
return(null);
}
public bool SaveFile(byte[] fileData, string id, string fileName, string contentUri)
{
try
{
var activity = (MainActivity)CrossCurrentActivity.Current.Activity;
if (contentUri != null)
{
var uri = Android.Net.Uri.Parse(contentUri);
var stream = activity.ContentResolver.OpenOutputStream(uri);
// Using java bufferedOutputStream due to this issue:
// https://github.com/xamarin/xamarin-android/issues/3498
var javaStream = new Java.IO.BufferedOutputStream(stream);
javaStream.Write(fileData);
javaStream.Flush();
javaStream.Close();
return(true);
}
// Prompt for location to save file
var extension = MimeTypeMap.GetFileExtensionFromUrl(fileName.Replace(' ', '_').ToLower());
if (extension == null)
{
return(false);
}
string mimeType = MimeTypeMap.Singleton.GetMimeTypeFromExtension(extension);
if (mimeType == null)
{
if (extension == "json")
{
// Explicit support for json since older versions of Android don't recognize the extension
mimeType = "text/json";
}
else
{
return(false);
}
}
var intent = new Intent(Intent.ActionCreateDocument);
intent.SetType(mimeType);
intent.AddCategory(Intent.CategoryOpenable);
intent.PutExtra(Intent.ExtraTitle, fileName);
activity.StartActivityForResult(intent, Constants.SaveFileRequestCode);
return(true);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(">>> {0}: {1}", ex.GetType(), ex.StackTrace);
}
return(false);
}