Android判断网络状态方法详解

Android 判断网络状态这一应用技巧在实际应中是比较重要的。那么，在Android操作系统中，如何能够正确的判断我们所连接的网络是否断开恩？今天我们就针对这一应用技巧进行一个详细的分析。

//注册一个广播接收者，接收网络连接状态改变广播　public class ConnectionChangeReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();NetworkInfo mobNetInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);if (activeNetInfo != null) {Toast.makeText(context,"Active Network Type : " + activeNetInfo.getTypeName(),Toast.LENGTH_SHORT).show();}if (mobNetInfo != null) {Toast.makeText(context,"Mobile Network Type : " + mobNetInfo.getTypeName(),Toast.LENGTH_SHORT).show();}}}

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/><receiverandroid:name="com.blackboard.androidtest.receiver.ConnectionChangeReceiver"android:label="NetworkConnection"> <intent-filter> <action android:name="android.net.conn.CONNECTIVITY_CHANGE"/> </intent-filter></receiver>

另一种方法：

public boolean isNetworkAvailable() {Context context = getApplicationContext();ConnectivityManager connectivity = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);if (connectivity == null) {boitealerte(this.getString(R.string.alert),"getSystemService rend null");} else {//获取所有网络连接信息NetworkInfo[] info = connectivity.getAllNetworkInfo();if (info != null) {//逐一查找状态为已连接的网络for (int i = 0; i < info.length; i++) {if (info[i].getState() == NetworkInfo.State.CONNECTED) {return true;}}}}return false;}

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