/// <summary>
/// Android系统一个app一个uid，如果同一uid下有两个进程对应的包名，在"/data/data"下有两个私有目录，则该应用被多开了
/// </summary>
/// <returns></returns>
public static bool CheckByHasSameUid()
{
if (mCheckByHasSameUid.HasValue)
{
return(mCheckByHasSameUid.Value);
}
var filter = GetUidStrFormat();
if (string.IsNullOrWhiteSpace(filter))
{
return(false);
}
var result = CommandUtil.Exec("ps");
if (string.IsNullOrWhiteSpace(result))
{
return(false);
}
#pragma warning disable CS8602 // 取消引用可能出现的空引用。
var lines = result.Split(new[] { "\n" }, StringSplitOptions.RemoveEmptyEntries);
#pragma warning restore CS8602 // 取消引用可能出现的空引用。
if (lines == null || lines.Length <= 0)
{
return(false);
}
var exitDirCount = 0;
for (int i = 0; i < lines.Length; i++)
{
if (lines[i].Contains(filter, StringComparison.OrdinalIgnoreCase))
{
var pkgStartIndex = lines[i].LastIndexOf(" ");
var processName = lines[i].JavaSubstring(
pkgStartIndex <= 0 ? 0 : pkgStartIndex + 1, lines[i].Length);
using var dataFile = new Java.IO.File($"/data/data/{processName}");
if (dataFile.Exists())
{
exitDirCount++;
}
}
if (exitDirCount > 1)
{
mCheckByHasSameUid = true;
return(mCheckByHasSameUid.Value);
}
}
mCheckByHasSameUid = exitDirCount > 1;
return(mCheckByHasSameUid.Value);
}
static string?GetUidStrFormat()
{
var filter = CommandUtil.Exec("cat /proc/self/cgroup");
if (string.IsNullOrWhiteSpace(filter))
{
return(null);
}
#pragma warning disable CS8604 // 可能的 null 引用参数。
var filter2 = filter.ToJavaString();
#pragma warning restore CS8604 // 可能的 null 引用参数。
int uidStartIndex = filter2.LastIndexOf("uid");
int uidEndIndex = filter2.LastIndexOf("/pid");
if (uidStartIndex < 0)
{
return(null);
}
if (uidEndIndex <= 0)
{
uidEndIndex = filter2.Length();
}
filter2 = filter2.Substring(uidStartIndex + 4, uidEndIndex).ToJavaString();
try
{
var strUid = filter2.ReplaceAll("\n", "");
var uid = strUid.TryParseInt32();
if (uid.HasValue)
{
return(Java.Lang.String.Format("u0_a%d", uid - 10000));
}
}
catch (Java.Lang.Throwable t)
{
t.PrintStackTraceWhenDebug();
}
return(null);
}
