<uses-permission
android:name="android.permission.ACCESS_NETWORK_STATE" />
private boolean getNetWorkStatus() {
boolean netSataus = false;
ConnectivityManager cwjManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
cwjManager.getActiveNetworkInfo();
if (cwjManager.getActiveNetworkInfo() != null) {
netSataus = cwjManager.getActiveNetworkInfo().isAvailable();
}
if (!netSataus) {
Builder b = new AlertDialog.Builder(this).setTitle("没有可用的网络")
.setMessage("是否对网络进行设置？");
b.setPositiveButton("是", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
Intent mIntent = new Intent("/");
ComponentName comp = new ComponentName(
"com.android.settings",
"com.android.settings.WirelessSettings");
mIntent.setComponent(comp);
mIntent.setAction("android.intent.action.VIEW");
startActivityForResult(mIntent,0);
}
}).setNeutralButton("否", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
dialog.cancel();
}
}).show();
}
return netSataus;
} android判断网络状态
原文：http://blog.csdn.net/u014600432/article/details/41010713
