判断有无网路无网跳转

   private class MyRecever extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            if(action.equals("com.bawei.net 

")){
                String net = intent.getStringExtra("net");
                Toast.makeText(MainActivity.this, "接收广播成功:"+net, Toast.LENGTH_SHORT).show();
            }
        }

    }

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  //使用自己编写的工具类,判断是否是手机流量
        boolean mobile = NetWorkUtils.isMobile(this);
        //有网做对应的操作
        if (mobile) {
            Toast.makeText(MainActivity.this, "手机流量网络连接成功", Toast.LENGTH_SHORT).show();

        } else {
            Toast.makeText(MainActivity.this, "手机流量网络连接失败", Toast.LENGTH_SHORT).show();
            //无网络时，跳转网络设置界面
            Intent intent = new Intent("com.bawei.net 

");
            intent.putExtra("net", "亲，断网了，应该去设置网络了");
            sendBroadcast(intent);
            Intent wifiSettingsIntent = new Intent("android.settings.WIFI_SETTINGS");
            startActivity(wifiSettingsIntent);
        }