emoji 代码需要在底层里过滤处理

[oncity]

JSON 含有 emoji 代码，会引起 utf8 crash ，希望能处理这个严重问题

[chenzefeng09]

same crash issue when i displaying emoji in a <text> tag.

crash log:
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] JNI DETECTED ERROR IN APPLICATION: input is not valid Modified UTF-8: illegal start byte 0xf0
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] string: '[{"module":"dom","method":"addElement","args":["root",{"ref":"5","type":"cell","attr":{"index":0,"append":"tree"},"style":{"flexDirection":"column","width":750},"event":["click"],"children":[{"ref":"6","type":"div","attr":{},"style":{"flexDirection":"row","width":750,"padding":24},"children":[{"ref":"7","type":"image","attr":{"src":"http://img.yimutian.com/avatar/609aea8b1924db3d6d27f90c446939b2.jpg"},"style":{"width":90,"height":90,"borderRadius":45,"borderColor":"#e2e2e2","borderWidth":1}},{"ref":"8","type":"div","attr":{},"style":{"flexDirection":"column","flex":1,"justifyContent":"center","marginLeft":24},"children":[{"ref":"9","type":"div","attr":{},"style":{"flexDirection":"row","alignItems":"center"},"children":[{"ref":"10","type":"text","attr":{"value":"陈泽峰"},"style":{"fontSize":32}}]},{"ref":"13","type":"text","attr":{"value":"😁","textoverflow":"ellipsis","lines":"1"},"style":{"marginTop":12,"color":"#999999","fontSize":28}}]},{"ref":"14","type":"t
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] in call to NewStringUTF
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] from int com.taobao.weex.bridge.WXBridge.execJS(java.lang.String, java.lang.String, java.lang.String, com.taobao.weex.bridge.WXJSObject[])
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] "JSBridgeThread" prio=5 tid=18 Runnable
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] | group="main" sCount=0 dsCount=0 obj=0x12e4d970 self=0xf3fb0c00
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] | sysTid=13717 nice=0 cgrp=default sched=0/0 handle=0xf3c54c80
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] | state=R schedstat=( 4063939723 924434460 3028 ) utm=334 stm=71 core=2 HZ=100
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] | stack=0xe09a0000-0xe09a2000 stackSize=1036KB
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] | held mutexes= "mutator lock"(shared held)
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] native: #00 pc 00005d03 /system/lib/libbacktrace_libc++.so (UnwindCurrent::Unwind(unsigned int, ucontext)+83)
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] native: #1 pc 00003051 /system/lib/libbacktrace_libc++.so (Backtrace::Unwind(unsigned int, ucontext_)+33)
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] native: #2 pc 003c9b97 /system/lib/libart.so (art::DumpNativeStack(std::_1::basic_ostream<char, std::1::char_traits >&, int, char const, art::mirror::ArtMethod)+135)
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] native: #3 pc 00392f52 /system/lib/libart.so (art::Thread::Dump(std::1::basic_ostream<char, std::1::char_traits >&) const+306)
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] native: #4 pc 001029bb /system/lib/libart.so (art::JniAbort(char const, char const)+1019)
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] native: #5 pc 0010359c /system/lib/libart.so (art::JniAbortF(char const, char const, ...)+108)
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] native: #6 pc 0010827e /system/lib/libart.so (art::ScopedCheck::Check(bool, char const, ...) (.constprop.131)+3102)
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] native: #7 pc 0010e21d /system/lib/libart.so (art::CheckJNI::NewStringUTF(JNIEnv, char const*)+93)
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] native: #8 pc 001a35c6 /system/lib/libhoudini.so (???)
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] native: #9 pc 00196244 /system/lib/libhoudini.so (???)
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] native: #10 pc 001ba094 /system/lib/libhoudini.so (???)
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] at com.taobao.weex.bridge.WXBridge.execJS(Native method)
05-26 22:38:30.330 13676-13717/com.ymt360.app.mass A/art: art/runtime/check_jni.cc:65] at com.taobao.weex.bridge.WXBridgeManager.invokeCallJSBatch(WXBridgeManager.java:865)

[YorkShen]

Please attach the source file of .we witch crash info @oncity @chenzefeng09

[YorkShen]

@zshshr JNI crash when execJS, anything we can do?

[oncity]

@YorkShen 能不能在 http get 数据后，过滤或替换一下数据？javascript 层，处理不到这个 crash

[YorkShen]

@oncity Pls attach the corresponding .we source file @oncity . I will see what I can do, thanks

[YorkShen]

@chenzefeng09 Works for me. And I am using this file. There is an improvement in text render mechanism on weex android, checkout android-feature-20160706 branch an give it another try. If it doesn't work for you, upload the .we source file, pls. Thank you.

[LiushuiXiaoxia]

怎么解决的？确实，如果好友表情，就会出现这个错误。

[YorkShen]

@LiushuiXiaoxia 这是Android 6.0以下，系统NDK的一个bug。在6.0以下，NDK只能处理Modified UTF-8，如果处理了非BMP字符，就会导致crash。emoji属于SMP字符，所以会触发上述问题。
参考 #313

[Jinjiang]

这个问题由于长期没有讨论，所以做关闭处理
如果有后续讨论可以在这里继续
谢谢支持