private boolean CheckNetwork() { boolean flag = false; ConnectivityManager cwjManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); if (cwjManager.getActiveNetworkInfo() != null) flag = cwjManager.getActiveNetworkInfo().isAvailable(); if (!flag) { Builder b = new AlertDialog.Builder(this).setTitle("没有可用的网络") .setMessage("请开启GPRS或WIFI网络连接"); b.setPositiveButton("确定", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { Intent mIntent = new Intent("/"); ComponentName comp = new ComponentName( "com.android.settings", "com.android.settings.WirelessSettings"); mIntent.setComponent(comp); mIntent.setAction("android.intent.action.VIEW"); startActivity(mIntent); } }).setNeutralButton("取消", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { dialog.cancel(); } }).create(); b.show(); } return flag; } // 判断是否有网络连接 if (!CheckNetwork()) return;
开启GPRS或WIFI网络连接
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转载自yebingzi.iteye.com/blog/1662988
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