安卓设备应用只使用蜂窝网络通讯代码实现

以下是使用蜂窝网络通讯代码的示例：

1. 检查蜂窝网络是否可用

ConnectivityManager connMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
if (networkInfo != null && networkInfo.isConnected()) {
    // 蜂窝网络可用
} else {
    // 蜂窝网络不可用
}

2. 发送HTTP请求

URL url = new URL("http://example.com");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setRequestProperty("Accept", "application/json");

if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
    // 获取响应数据
    InputStream inputStream = conn.getInputStream();
    BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
    StringBuilder response = new StringBuilder();
    String line;
    while ((line = reader.readLine()) != null) {
        response.append(line);
    }
    reader.close();
    // 处理响应数据
} else {
    // HTTP请求失败
}

conn.disconnect();

3. 发送SMS短信

SmsManager smsManager = SmsManager.getDefault();
String destinationAddress = "1234567890";
String text = "Hello World!";
smsManager.sendTextMessage(destinationAddress, null, text, null, null);

请注意，上述代码仅是示例代码，具体实现方式可能因不同的业务需求而异。建议在实际开发中仔细考虑各种情况，并进行必要的错误处理和异常处理。