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为什么下面两项表格中的内容上传到手机上后，没有居中显示了,求指点。 - Ap...
为什么下面两项表格中的内容上传到手机上后，没有居中显示了,求指点。
表格布局宽度充满，里面3列宽度也要设置，建议：30%，40%，30%，就居中了。
如果想要左右留空，可以表格分5列，中间3格放按钮，宽度都是20%。
UrsPahoMqttClient心跳问题解决——Paho底层已自动处理，设好KeepAlive就行...
...assword, keepAliveSeconds)
keepAliveSeconds 设多少？
- 推荐设 30-60 秒
- 设 60 秒 则 Paho 每隔 30 秒自动发一次 PingReq
- 设 30 秒 则每隔 15 秒发一次
- 设太小费流量，设太大可能被 Broker 踢掉
- 推荐直接用 60 秒，省心又稳
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answered Nov 14 '13 at 4:17
Amit VermaAmit Verma
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edited Sep 16 '13 at 8:18
user283145
answered Jan 10 '13 at 19:53
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Reference
C# 5.0 Joseph Albahari
(Channel9 — Video Build 2013)
Five Great Reasons to Use the New HttpClient API to Connect to Web Services
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