Android之检查网络是否可用（跳转网络设置页面）

private boolean NetWorkStatus() {
ConnectivityManager cwjManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
// cwjManager.getActiveNetworkInfo();
boolean netSataus = true;
if (cwjManager.getActiveNetworkInfo() != null) {
netSataus = cwjManager.getActiveNetworkInfo().isAvailable();
Toast.makeText(this, "网络已经打开", Toast.LENGTH_LONG).show();
} else {

Builder b = new AlertDialog.Builder(this).setTitle("没有可用的网络")
.setMessage("是否对网络进行设置？");
b.setPositiveButton("是", 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");
// 如果在设置完成后需要再次进行操作，可以重写操作代码，在这里不再重写
startActivityForResult(mIntent, 0);
}
}).setNeutralButton("否", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
dialog.cancel();
}
}).show();
}

return netSataus;
}

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