机器人：NeighboringCellInfo总是空的！？为什么？ [英] android: NeighboringCellInfo always empty !? why?

问题描述

我试图获取有关相邻小区我的手机可以看到ATM信息。到现在为止还挺好。我这样做是这样的：

  telManager =（TelephonyManager）context.getSystemService（Context.TELEPHONY_SERVICE）;
// ...
ArrayList的＆LT; NeighboringCellInfo＆GT; neighboringCellList =（ArrayList的＆LT; NeighboringCellInfo＆GT;）telManager.getNeighboringCellInfo（）;
 

不幸的是，这份名单原来是空的所有时间。即使是在不同的地方。我住在柏林，所以我不认为这是因为实际上只是一个单元可用！

更新： 我的权限是这样的：

 ＆LT;使用-权限的Andr​​oid：名称=android.permission.INTERNET对/＆GT;
＆LT;使用-权限的Andr​​oid：名称=android.permission.CHANGE_NETWORK_STATE/＆GT;
＆LT;使用-权限的Andr​​oid：名称=android.permission.ACCESS_WIFI_STATE/＆GT;
＆LT;使用-权限的Andr​​oid：名称=android.permission.ACCESS_NETWORK_STATE/＆GT;
＆LT;使用-权限的Andr​​oid：名称=android.permission.ACCESS_FINE_LOCATION/＆GT;
＆LT;使用-权限的Andr​​oid：名称=android.permission.ACCESS_COARSE_LOCATION/＆GT;
＆LT;使用-权限的Andr​​oid：名称=android.permission.ACCESS_COARSE_UPDATES/＆GT;
＆LT;使用-权限的Andr​​oid：名称=android.permission.READ_PHONE_STATE/＆GT;
 

解决方案

我已经看到了同样的问题，几个问题，但它似乎是他们没有得到一个很好的和决定性的解决方案。最常见的建议是，以确保您有正确的权限（我看你在你的问题做的），并有一些说，这仅适用于2G和3G没有

看看下面类似的问题。这可能会指出你在一些新的方向：

<一个href="http://stackoverflow.com/questions/5536705/getneighboringcellinfo-returning-null-list">getNeighboringCellInfo()返回null列表

<一个href="http://stackoverflow.com/questions/3868223/problem-with-neighboringcellinfo-cid-and-lac">Problem与NeighboringCellInfo，CID和LAC

在Android的

获取相邻小区返回null

i'm trying to get info about the neighboring cells my phone can "see" atm. so far so good. i do this like this:

telManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
//...
ArrayList<NeighboringCellInfo> neighboringCellList = (ArrayList<NeighboringCellInfo>) telManager.getNeighboringCellInfo();

unfortunately, this list turns out to be empty all the time. even in different places. i live in berlin, so i don't think it's because there is actually just the one cell available!

update: my permissions look like this:

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_UPDATES" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />

解决方案

I've seen several questions on the same issue but it seems like none of them got a good and deterministic solution. The most common suggestion is to make sure you have the correct permission (which I see you do in your question) and there are some that say that this only works on 2G and not 3G.

Take a look at the following similar questions. It might point you in some new directions:

getNeighboringCellInfo() returning null list

Problem with NeighboringCellInfo, CID and LAC

Get neighboring cell in Android returns null

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