android检测wifi是否打开或连接及设置自动打开

private boolean isWifiOpened() {
WifiManager wifiManager = (WifiManager) cxt.getSystemService(Context.WIFI_SERVICE);
return wifiManager.isWifiEnabled();
}
private boolean isWifiConnected() {
ConnectivityManager connectivityManager = (ConnectivityManager)cxt.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo wifiNetworkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
return wifiNetworkInfo.isConnected();
}
private void showWifiDialog() {
AlertDialog.Builder builder = new AlertDialog.Builder(cxt);
builder.setTitle("Tip");
builder.setMessage("未打开Wifi,是否进行设置？");
builder.setPositiveButton("确认", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
toggleWiFi(cxt, true);
}
});
builder.setNegativeButton("取消", null);
builder.show();
}
private void toggleWiFi(Context context, boolean enabled) {
WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
wifiManager.setWifiEnabled(enabled);
}