为什么在 android 上重定向 stdout/stderr 不起作用? [英] Why is redirecting stdout/stderr on android not working?
问题描述
我下载了 SDL 1.3 并在我的 android 2.2 设备上将它与 OpenGL ES 一起测试.它工作正常,但我没有从 printf
调用中获得输出.我尝试了 android 开发者页面 但 Eclipse 中的 DDMS
和 adb logcat
都不会报告程序使用 printf
写入的字符串.我确保过滤 stdout
标记.
I downloaded SDL 1.3 and tested it together with OpenGL ES on my android 2.2 device. It works fine but I don't get the outputs from the printf
calls. I tried the commands below as mentioned at the android developer page but neither DDMS
in Eclipse nor adb logcat
reports the strings that the program writes using printf
. I made sure to filter for the stdout
tag.
$ adb shell stop
$ adb shell setprop log.redirect-stdio true
$ adb shell start
我错过了什么或做错了什么?
What am I missing or doing wrong?
推荐答案
另一种方法是创建一个文件 /data/local.prop
,其中仅包含行 log.redirect-stdio=true
.也许这效果更好?另外,请注意 stdout 已缓冲,因此您的输出可能仍位于缓冲区中,等待刷新.您可以手动调用 fflush
进行检查.
Another way of doing this is having a file /data/local.prop
, containing just the line log.redirect-stdio=true
. Maybe this works better? Also, note that stdout is buffered, so it could be that your output is still sitting in the buffer, waiting to be flushed. You can call fflush
manually to check this.
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