connectivitymanager - android.net.conn.CONNECTIVITY_CHANGE [英] connectivitymanager - android.net.conn.CONNECTIVITY_CHANGE

问题描述

我已经创建了一个过滤器<一个href=\"http://developer.android.com/reference/android/net/ConnectivityManager.html#CONNECTIVITY_ACTION\"相对=nofollow> android.net.conn.CONNECTIVITY_CHANGE 。结果
我确实收到意向到我的广播接收器。

I have created an filter for android.net.conn.CONNECTIVITY_CHANGE.
I do receive intents to my broadcastreceiver.

我的问题是关于什么提高了 connectivity_change 。
该API描述说：

My question is regarding what raises the connectivity_change. The API description says:

在网络连通性的变化已经发生。一个连接要么
  已经建立或丢失。所述的NetworkInfo为受影响的网络是
  派作为一个额外的;应该咨询，看看是什么样的
  连通性事件发生。

A change in network connectivity has occurred. A connection has either been established or lost. The NetworkInfo for the affected network is sent as an extra; it should be consulted to see what kind of connectivity event occurred.

这似乎在移动网络连接/断开（PDP坏了）我的BroadcastReceiver才会被调用。它不会引发时例2G切换到3G网络。

It seems my broadcastreceiver is only called when mobile network is connected/disconnected (pdp is broken). It is not raised when for example 2g switches to 3g.

我能赶不上2G到3G互换这个广播接收器？结果
我必须用一个phonestatelistener而是可以捕捉到例如，2G互换到3G？

Can I not catch 2g to 3g swaps with this broadcastreceiver?
Do I have to use a phonestatelistener instead to catch swaps from e.g, 2g to 3g?

推荐答案

您需要：

许可android.permission.READ_PHONE_STATE //获取连接的变化（2G / 3G /等）
许可android.permission.ACCESS_COARSE_LOCATION //获取细胞/塔变化

permission "android.permission.READ_PHONE_STATE" //to get connection changes (2G/3G/etc) permission "android.permission.ACCESS_COARSE_LOCATION" //to get Cell/Tower changes

和

//Make the listener
listener = new PhoneStateListener() { 
    public void onDataConnectionStateChanged(int state, int networkType) 
    { 
       //We have changed proticols, for example we have gone from HSDPA to GPRS
       //HSDPA is an example of a 3G connection 
       //GPRS is an example of a 2G connection
    }
    public void onCellLocationChanged(CellLocation location) {
       //We have changed to a different Tower/Cell
    }
};

//Add the listener made above into the telephonyManager
telephonyManager.listen(listener, 
        PhoneStateListener.LISTEN_DATA_CONNECTION_STATE //connection changes 2G/3G/etc
        | PhoneStateListener.LISTEN_CELL_LOCATION       //or tower/cell changes 
); 

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