"Brevent" hajacks several system API to prevent not-in-use apps in prevent list from running or keep running. Furthermore, it applies to system apps too, specially, support google-family apps(GAPPS).

Not-in-use packages in prevent list can only run:

• some other app call it's activity (share, launcher)
• widget on home, however, it can only run 30 seconds
• sync service if you allow, it can only run 30 seconds too
• system services (excluding normal gapps), or alipay's service

NOTE: When Google Play Services(GMS) and related apps are in prevent list, only GAPPS and GCM-apps can use it. However, you cannot receive GCM message if GMS is not running.

WARNING: Don't prevent system apps nor daily apps, otherwise, you may miss important message.

WARNING: Don't prevent "Xposed Installer", otherwise the module won't active when you update it.

"Brevent" should work from Android 4.4 to 6.0. However, I mainly use 7.1.

1. Patch your ROM with "Brevent".
2. Open "Brevent", then add/remove application to/from prevent list.
3. Use android normally, press back or remove it from recent task to exit, and press HOME for pause.

And "Brevent" would keep non-"service" processes, of cource it cannot turn to "service".

• -3 for third party apps
• -a for all apps (default show third party apps and gapps)
• -s for system apps
• -e for enabled apps
• -r for running apps
• -g for gapps, i.e. apps from google
• -sg for system apps excluding gapps

This process contains background code that is expendable.

This process is empty of any actively running code.

This process is running the foreground UI; that is, it is the thing currently at the top of the screen that the user is interacting with.

This process is running a foreground service, for example to perform music playback even while the user is not immediately in the app. This generally indicates that the process is doing something the user actively cares about.

This process does not exist.

This process is not something the user is directly aware of, but is otherwise perceptable to them to some degree.

This process is contains services that should remain running. These are background services apps have started, not something the user is aware of, so they may be killed by the system relatively freely (though it is generally desired that they stay running as long as they want to).

This process is running the foreground UI, but the device is asleep so it is not visible to the user. This means the user is not really aware of the process, because they can not see or interact with it, but it is quite important because it what they expect to return to once unlocking the device.

This process is running something that is actively visible to the user, though not in the immediate foreground. This may be running a window that is behind the current foreground (so paused and with its state saved, not interacting with the user, but visible to them to some degree); it may also be running other services under the system's control that it inconsiders important.

Project: Brevent - GitHub. If you like, feel free to donate.

"Hei Yu "Tong Guo Jie Chi Ji Ge Xi Tong API,Bao Zheng Zu Zhi Lie Biao Li De Ying Yong Zhi Zai Xu Yao Shi Cai Qi Dong ,Tong Shi Zhi Chi Gu Ge Jia Zu Ying Yong .

Mei You Yun Xing De Zu Zhi Lie Biao Ying Yong Zhi Hui Zai Yi Xia Ji Chong Qing Kuang Xia Qi Dong :

• Qi Dong Qi Huo Zhe Di San Fang Ying Yong Qi Dong Huo Dong (Activity),Ru Shou Dong Da Kai , Fen Xiang , Bu Fen Zhi Fu Deng ;
• Zhuo Mian Xiao Bu Jian Ding Shi Geng Xin ,Dan Shi Zhi Neng Yun Xing 30Miao ;
• Tong Bu Kai Qi Shi De Ding Shi Tong Bu ,Ye Zhi Neng Yun Xing 30Miao ;
• Chu Gu Ge Fu Wu Wai De Xi Tong Fu Wu ,Huo Zhe Zhi Fu Bao De Zhi Fu Fu Wu ;
• Qi Ta Ke Neng De Yong Hu Xing Wei Yin Qi De Qi Dong .

Zhu Yi :Dang Gu Ge Fu Wu Zai Zu Zhi Lie Biao Shi ,Zhi You Gu Ge Jia Zu Ying Yong He Di San Fang De GCMYing Yong Ke Yi Shi Yong . Tong Shi ,Dang You Ren He Yi Ge Gu Ge Jia Zu Ying Yong Mei You Tui Chu Shi ,Du Bu Hui Tui Chu Gu Ge Fu Wu . Dang Ran ,Zhi You GMSYun Xing Shi Cai Neng Jie Shou GCMXiao Xi ,Bing Huan Xing Xiang Ying Ying Yong .

Jing Gao :Qing Jin Shen Zu Zhi "Xi Tong Ying Yong ",Yi Ji Chang Yong Ying Yong . Yao Bu Ran ,Ni Ke Neng Wu Fa Ji Shi Shou Dao Duan Xin Huo Qi Ta Zhong Yao Xiao Xi . "Hei Yu "Bu Hui Xian Shi He Xi Tong Tong Yi Qian Ming De Xi Tong Ying Yong ,Ye Bu Hui Xian Shi Xi Tong Nei Zhi De Qi Dong Qi .

Jing Gao :Qing Bu Yao Zu Zhi "Xposed Installer",Fou Ze Mo Kuai Geng Xin Shi ,Wu Fa Geng Xin Mo Kuai Lu Jing ,Dao Zhi Zhong Qi Yi Hou Wu Fa Jia Zai Mo Kuai .

Ti Shi :You Xie Yong Hu Wu Fa Huo Bu Yuan Fen Qing HOMEYu Fan Hui Jian Qu Bie ,Ke Yi Kai Qi "Qiang Xing Ting Zhi Hou Tai Cheng Xu ",Zai Chi Kai Cheng Xu Yi Duan Shi Jian Hou Bing Hei Ping Shi Tui Chu Ying Yong . Zhe Xiang Gong Neng Mo Ren Guan Bi .

"Hei Yu "Zhi Chi Android 4.4Dao 7.1,Ben Ren Zhu Yao Zai 7.1Shang Ce Shi .

1. Gei Shou Ji An Zhuang Hei Yu Bu Ding .
2. Da Kai "Hei Yu ",Pei Zhi Zu Zhi Lie Biao (Zhe Ge Zhi Xu Yao Yi Ci ).
3. Zheng Chang Shi Yong Shou Ji ,Lin Shi Tui Chu Shi An HOME,Bu Yong Shi An Fan Hui Jian Tui Chu Huo Zhe Cong Zui Jin Lie Biao Hua Diao .

Tong Shi ,"Hei Yu "Bu Sha Fei Fu Wu De Cheng Xu ,Dan Shi Bao Zheng Fei Fu Wu Lei Jin Cheng Bu Hui Bian Cheng Fu Wu Zai Hou Tai Yi Zhi Yun Xing .

• -3 Yong Hu An Zhuang De Di San Fang Cheng Xu
• -a Quan Bu Cheng Xu (Mo Ren Jin Zhan Shi Di San Fang He Gu Ge Jia Zu De Cheng Xu )
• -s Xi Tong Yu Zhuang De Cheng Xu
• -e Mei You Zu Zhi De Cheng Xu
• -r Zheng Zai Yun Xing De Cheng Xu
• -g Gu Ge Jia Zu De Cheng Xu
• -sg Chu Gu Ge Jia Zu Wai De Xi Tong Cheng Xu

Ke Bei Hui Shou De Hou Tai Jin Cheng . (Yi Zhe Zhu :Huo Yi Huan Cun De Hou Tai Jin Cheng ,Bu Xu Yao Zhu Dong Qing Li . )

Jin Cheng Bu Bao Han Ren He Zheng Zai Yun Xing De Dai Ma .

Jin Cheng Zheng Zai Qian Tai Yun Xing ,Ye Shi Ni Zheng Zai Shi Yong De Ying Yong . (Yi Zhe Zhu :Dang Ni Zai "Hei Yu "Zhong Cha Kan Jin Cheng Zhuang Tai Shi ,"Hei Yu "Yong Yuan Shi Qian Tai . )

Jin Cheng Bao Han Qian Tai Fu Wu ,Bi Ru Bo Fang Yin Le Deng ,Tong Chang Biao Ming Zheng Zai Chu Li Yi Xie Yong Hu Guan Xin De Shi Qing .

Jin Cheng Bu Cun Zai .

Sui Ran Yong Hu Bu Neng Zhi Jie Zhu Yi Dao ,Dan Shi Mou Chong Ceng Ci Shang Ke Yi Gan Jue Dao (Yi Zhe Zhu :Ru Shu Ru Fa ).

Bao Han Xu Yao Chi Xu Yun Xing De Fu Wu . Zhe Xie Shi Yi Jing Qi Dong De Hou Tai Fu Wu ,Yong Hu Bing Bu Neng Zhu Yi Dao ,Ta Men Ye You Ke Neng Bei Xi Tong Hui Shou (Sui Ran Cong She Ji Shang Hui Bei Yi Zhi Yun Xing Xia Qu ).

Jin Cheng Zai Qian Tai Yun Xing ,Dan Shi She Bei Zheng Zai Xiu Mian ,Suo Yi Yong Hu Kan Bu Jian . Zhe Yi Wei Zhao Yong Hu Bing Bu Neng Zhen Zheng Zhu Yi Dao Ta ,Yin Wei Kan Bu Jian Ye Wu Fa Cao Zuo ,Dan Shi Dang She Bei Jie Suo Shi Qi Wang Li Ji Kan Dao ,Suo Yi Ye Fei Chang Zhong Yao .

Jin Cheng Dui Yong Hu Ke Jian ,Sui Ran Bu Yi Ding Shi Zui Jin De Qian Tai . Ta Ke Neng Yun Xing Zai Dang Qian Qian Tai Hou De Chuang Kou ,Sui Ran Yi Jing Zan Ting Bing Qie Bao Cun Zhuang Tai ,Ye Wu Fa Shi Yong ,Dan Shi Mou Chong Ceng Ci Shang Yong Hu Neng Jian Dao ;Ye Ke Neng Shi Xi Tong Kong Zhi Xia De Qi Ta Zhong Yao Fu Wu .

"Hei Yu "Dai Ma Zan Shi Bu Kai Yuan ,Xiang Mu Di Zhi :Brevent - GitHub. Ru Guo Xi Huan ,Qing Sui Yi Juan Zeng .