网络判断

来源:互联网 发布:ug4轴编程视频 编辑:程序博客网 时间:2024/06/13 03:56
private ConnectivityManager cm;private NetworkInfo ac;
cm= (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); ac=cm.getActiveNetworkInfo();if (ac==null){    Toast.makeText(MainActivity.this,"没有网",Toast.LENGTH_LONG).show();}else{    Toast.makeText(MainActivity.this,"有网",Toast.LENGTH_LONG).show();}

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