程式設計@筆記

//檢查網路連線狀況
public void chkNet(){
ConnectivityManager connMgr = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
if (networkInfo != null && networkInfo.isConnected()) {
//Toast.makeText(MainActivity.this, "網路連線中", Toast.LENGTH_SHORT).show();
} else {
//處理確認按鈕的點擊事件
Toast.makeText(MainActivity.this, "網路斷線", Toast.LENGTH_SHORT).show();
}
} // end chkNet

加入權限 AndroidManifest.xml

<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>