SWT / anr problem - SWT caused by long execution time of native method

1. Confirm the problem time point ：

02-12 17:26:02.574534  1159  3442 E Watchdog: **SWT happen **Blocked in handler on ui thread (android.ui)

2. Find twice in the corresponding time period trace It's consistent , All are as follows （ The following figure intercepts only one time point backtrace）：

from system_server blocked Of thread Start to analyze , This question is android.ui

"android.ui" prio=5 tid=13 Native
  | group="main" sCount=1 dsCount=0 flags=1 obj=0x15995758 self=0x799c9ec000
  | sysTid=1287 nice=-2 cgrp=default sched=0/0 handle=0x797dc384f0
  | state=S schedstat=( 183148434550 114009689792 565633 ) utm=11764 stm=6550 core=5 HZ=100
  | stack=0x797db35000-0x797db37000 stackSize=1041KB
  | held mutexes=
  kernel: __switch_to+0xc0/0xcc
  kernel: futex_wait_queue_me+0xc4/0x12c