**Android中的网络类型获取与处理**开发移动软件处理网络连接对于程序员是一个头疼的问题，至少我这个菜鸟这么认为，翻了几个软件发现有几个软件在logo页面就是检测网络是否可用，在其他页面有一个broadcast去处理，写了一下子，贴点代码做个笔记() { // TODO Auto-generated method stub super.onResume(); if (checknetwork()) {//跳转到其他页面的代码…………………..}else { openNet(“网络信息”, “无法连接上服务器，请检查网络”); } }(String title, String message) { // 让用户检查网络 AlertDialog.Builder adb = new AlertDialog.Builder(LogoActivity.this); final AlertDialog ad = adb.create(); // String current = “当前无法获取定位信息”; ad.setTitle(title); ad.setMessage(message); ad.setButton(“确定”, new DialogInterface.OnClickListener() { (DialogInterface dialog, int which) {//由于4.0以上把原来的设置方式舍弃了所以上面的代码舍去if(android.os.Build.VERSION.SDK_INT > 13 ){//3.2以上打开设置界面，也可以直接用ACTION_WIRELESS_SETTINGS打开到wifi界面 startActivity(new Intent(android.provider.Settings.ACTION_SETTINGS));}else {startActivity(new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS));}ad.dismiss();} }); ad.setButton2(“取消”, new DialogInterface.OnClickListener() { (DialogInterface dialog, int which) {ad.dismiss();System.exit(0); } }); ad.show(); }() { ConnectivityManager mConnectivity = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); TelephonyManager mTelephony = (TelephonyManager) LogoActivity.this.getSystemService(TELEPHONY_SERVICE); // 检查网络连接，如果无网络可用，就不需要进行连网操作等 NetworkInfo info = mConnectivity.getActiveNetworkInfo(); if (info == null || !mConnectivity.getBackgroundDataSetting()) { return false; } // 判断网络连接类型，只有在3G或wifi里进行一些数据更新。 int netType = info.getType(); int netSubtype = info.getSubtype(); if (netType == ConnectivityManager.TYPE_WIFI) { return info.isConnected(); } else if (netType == ConnectivityManager.TYPE_MOBILE&& netSubtype == TelephonyManager.NETWORK_TYPE_UMTS&& !mTelephony.isNetworkRoaming()) { return info.isConnected(); } else { return false; } }
网络连接广播处理,用于通知。
{String TAG =ConnectionChangeReceiver.class.getSimpleName();(Context context, Intent intent) {Log.e(TAG, “网络状态改变”);boolean success = false;//获得网络连接服务 ConnectivityManager connManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);// State state = connManager.getActiveNetworkInfo().getState(); // 获取WIFI网络连接状态 State state = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState();// 判断是否正在使用WIFI网络 if (State.CONNECTED == state) {success = true;}// 获取GPRS网络连接状态 state = connManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState();// 判断是否正在使用GPRS网络 if (State.CONNECTED != state) {success = true;}if (!success) {Toast.makeText(context, context.getString(R.string.your_network_has_disconnected), Toast.LENGTH_LONG).show();}} {String TAG =ConnectionChangeReceiver.class.getSimpleName();(Context context, Intent intent) {Log.e(TAG, “网络状态改变”);boolean success = false;//获得网络连接服务 ConnectivityManager connManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);// State state = connManager.getActiveNetworkInfo().getState(); // 获取WIFI网络连接状态 State state = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState();// 判断是否正在使用WIFI网络 if (State.CONNECTED == state) {success = true;}// 获取GPRS网络连接状态 state = connManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState();// 判断是否正在使用GPRS网络 if (State.CONNECTED != state) {success = true;}if (!success) {Toast.makeText(context, context.getString(R.string.your_network_has_disconnected), Toast.LENGTH_LONG).show();}}
记得在Manifest文件里面进行权限声明，和广播接收器注册。
> =>> < /receiver>
使用方式一： 一、 在Activity的onCreate中: //注册网络监听 IntentFilter filter = new IntentFilter(); filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION); registerReceiver(mNetworkStateReceiver, filter);
二、在Activity中的onDestroy中: //取消监听 unregisterReceiver(mNetworkStateReceiver);
让情谊在笑声中升腾，当朋友遇到了难题的时候，
