Android_开发技巧杂集_网络_半透明_异步线程

1.检查是否有网络连接 　　Java代码 　　1. public static boolean isNetworkAvailable(Context context) { 　　2. ConnectivityManager cm = (ConnectivityManager) context.getSystemService( 　　3. Context.CONNECTIVITY_SERVICE); 　　4. NetworkInfo info = cm.getActiveNetworkInfo(); 　　5. return (info != null && info.isConnected()); 　　6. } 　　public static boolean isNetworkAvailable(Context context) { 　　ConnectivityManager cm = (ConnectivityManager) context.getSystemService( 　　Context.CONNECTIVITY_SERVICE); 　　NetworkInfo info = cm.getActiveNetworkInfo(); 　　return (info != null && info.isConnected()); 　　}