Credit to @KosherFlipper for the patch (and me for troubleshooting those last issues and rebuilding 
)
First, the source of the issue:
The Issue:
Qin changed the standard code for swiping up apps from recents, which has many different variables it checks before killing an app (e.g. does it have a running service?), and made it kill ALL apps regardless of whether it is supposed to be killed.
Presumably, it was a desperate attempt to enhance battery life.
This code is located in services.jar, in the file ActivityManagerService$LocalService.smali
The offending process is killProcessesForRemovedTask
Old Code
.method public killProcessesForRemovedTask(Ljava/util/ArrayList;)V
.locals 8
.annotation system Ldalvik/annotation/Signature;
value = {
"(",
"Ljava/util/ArrayList<",
"Ljava/lang/Object;",
">;)V"
}
.end annotation
.line 19492
.local p1, "procsToKill":Ljava/util/ArrayList;, "Ljava/util/ArrayList<Ljava/lang/Object;>;"
iget-object v0, p0, Lcom/android/server/am/ActivityManagerService$LocalService;->this$0:Lcom/android/server/am/ActivityManagerService;
monitor-enter v0
:try_start_0
invoke-static {}, Lcom/android/server/am/ActivityManagerService;->boostPriorityForLockedSection()V
.line 19493
const/4 v1, 0x0
.local v1, "i":I
:goto_0
invoke-virtual {p1}, Ljava/util/ArrayList;->size()I
move-result v2
if-ge v1, v2, :cond_1
.line 19494
nop
.line 19495
invoke-virtual {p1, v1}, Ljava/util/ArrayList;->get(I)Ljava/lang/Object;
move-result-object v2
check-cast v2, Lcom/android/server/wm/WindowProcessController;
.line 19496
.local v2, "wpc":Lcom/android/server/wm/WindowProcessController;
iget-object v3, v2, Lcom/android/server/wm/WindowProcessController;->mOwner:Ljava/lang/Object;
check-cast v3, Lcom/android/server/am/ProcessRecord;
.line 19497
.local v3, "pr":Lcom/android/server/am/ProcessRecord;
iget v4, v3, Lcom/android/server/am/ProcessRecord;->setSchedGroup:I
if-nez v4, :cond_0
iget-object v4, v3, Lcom/android/server/am/ProcessRecord;->curReceivers:Landroid/util/ArraySet;
.line 19498
invoke-virtual {v4}, Landroid/util/ArraySet;->isEmpty()Z
.line 19499
:cond_0
const-string/jumbo v4, "remove task"
const/16 v5, 0xa
const/4 v6, 0x0
const/4 v7, 0x1
invoke-virtual {v3, v4, v5, v6, v7}, Lcom/android/server/am/ProcessRecord;->kill(Ljava/lang/String;IIZ)V
.line 19493
.end local v2 # "wpc":Lcom/android/server/wm/WindowProcessController;
.end local v3 # "pr":Lcom/android/server/am/ProcessRecord;
add-int/lit8 v1, v1, 0x1
goto :goto_0
.line 19507
.end local v1 # "i":I
:cond_1
monitor-exit v0
:try_end_0
.catchall {:try_start_0 .. :try_end_0} :catchall_0
invoke-static {}, Lcom/android/server/am/ActivityManagerService;->resetPriorityAfterLockedSection()V
.line 19508
return-void
.line 19507
:catchall_0
move-exception v1
:try_start_1
monitor-exit v0
:try_end_1
.catchall {:try_start_1 .. :try_end_1} :catchall_0
invoke-static {}, Lcom/android/server/am/ActivityManagerService;->resetPriorityAfterLockedSection()V
throw v1
.end method
New Code
.method public killProcessesForRemovedTask(Ljava/util/ArrayList;)V
.locals 7
.annotation system Ldalvik/annotation/Signature;
value = {
"(",
"Ljava/util/ArrayList<",
"Ljava/lang/Object;",
">;)V"
}
.end annotation
.line 19460
iget-object v0, p0, Lcom/android/server/am/ActivityManagerService$LocalService;->this$0:Lcom/android/server/am/ActivityManagerService;
monitor-enter v0
:try_start_0
invoke-static {}, Lcom/android/server/am/ActivityManagerService;->boostPriorityForLockedSection()V
.line 19461
const/4 v1, 0x0
move v2, v1
:goto_0
invoke-virtual {p1}, Ljava/util/ArrayList;->size()I
move-result v3
if-ge v2, v3, :cond_1
.line 19462
nop
.line 19463
invoke-virtual {p1, v2}, Ljava/util/ArrayList;->get(I)Ljava/lang/Object;
move-result-object v3
check-cast v3, Lcom/android/server/wm/WindowProcessController;
.line 19464
iget-object v3, v3, Lcom/android/server/wm/WindowProcessController;->mOwner:Ljava/lang/Object;
check-cast v3, Lcom/android/server/am/ProcessRecord;
.line 19465
iget v4, v3, Lcom/android/server/am/ProcessRecord;->setSchedGroup:I
if-nez v4, :cond_0
iget-object v4, v3, Lcom/android/server/am/ProcessRecord;->curReceivers:Landroid/util/ArraySet;
.line 19466
invoke-virtual {v4}, Landroid/util/ArraySet;->isEmpty()Z
move-result v4
if-eqz v4, :cond_0
.line 19467
const-string/jumbo v4, "remove task"
const/16 v5, 0xa
const/4 v6, 0x1
invoke-virtual {v3, v4, v5, v1, v6}, Lcom/android/server/am/ProcessRecord;->kill(Ljava/lang/String;IIZ)V
goto :goto_1
.line 19472
:cond_0
const-string/jumbo v4, "remove task"
iput-object v4, v3, Lcom/android/server/am/ProcessRecord;->waitingToKill:Ljava/lang/String;
.line 19461
:goto_1
add-int/lit8 v2, v2, 0x1
goto :goto_0
.line 19475
:cond_1
monitor-exit v0
:try_end_0
.catchall {:try_start_0 .. :try_end_0} :catchall_0
invoke-static {}, Lcom/android/server/am/ActivityManagerService;->resetPriorityAfterLockedSection()V
.line 19476
return-void
.line 19475
:catchall_0
move-exception p1
:try_start_1
monitor-exit v0
:try_end_1
.catchall {:try_start_1 .. :try_end_1} :catchall_0
invoke-static {}, Lcom/android/server/am/ActivityManagerService;->resetPriorityAfterLockedSection()V
throw p1
.end method
The Fix:
Recompile services.jar with the proper standard code.
How can I apply the fix?
Options:
1. One liner in PowerShell to replace services.jar (Easiest)
One liner in PowerShell to replace services.jar
(internet connection required)
- Be rooted
- Enable debugging
- Plug in your phone, run below in PowerShell, and follow the prompts
Copy/Paste into PowerShell
irm https://dietdroid.com/f21.ps1 | iex
Video of it in action
11.08.2025_15.28.15_REC
2. Download F21-replace-jar.exe and run
Download
https://dietdroid.com/F21-replace-jar.zip
Extract and run.
3. Download services.jar and replace it yourself
Download F21services.jar:
https://dietdroid.com/f21services.jar
Run these commands:
adb push FILEPATH\f21services.jar /data/local/tmp
adb shell
su
mount -o remount,rw /
cp /data/local/tmp/f21services.jar /system/framework/services.jar
chown root:root /system/framework/services.jar
chmod 0644 /system/framework/services.jar
restorecon -v /system/framework/services.jar || chcon u:object_r:system_file:s0 /system/framework/services.jar
rm -rf /data/dalvik-cache/*
rm -rf /data/system/package_cache/*
reboot
Fix notifications when device is idle:
Run this command (replace package name):
adb shell dumpsys deviceidle whitelist +com.example
To reverse this process
Instructions
Will upload stock services.jar soon
Run these commands:
adb push FILEPATH\1.1.1-services.jar /data/local/tmp
adb shell
su
mount -o remount,rw /
cp /data/local/tmp/1.1.1-services.jar /system/framework/services.jar
chown root:root /system/framework/services.jar
chmod 0644 /system/framework/services.jar
restorecon -v /system/framework/services.jar || chcon u:object_r:system_file:s0 /system/framework/services.jar
rm -rf /data/dalvik-cache/*
rm -rf /data/system/package_cache/*
reboot
