我正在使用OKHttp向服务器发送Post请求,如下所示:
当我尝试运行App时,在logcat中会提示错误:
android.os.NetworkOnMainThreadException at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1273)
参考其他SO的问题,我添加了以下内容来覆盖该策略:
public class NetworkManager {
public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8");
OkHttpClient client = new OkHttpClient();
String post(String url, JSONObject json) throws IOException {
try {
JSONArray array = json.getJSONArray("d");
RequestBody body = new FormEncodingBuilder()
.add("m", json.getString("m"))
.add("d", array.toString())
.build();
Request request = new Request.Builder()
.url(url)
.post(body)
.build();
Response response = client.newCall(request).execute();
return response.body().string();
} catch (JSONException jsone) {
return "ERROR: " + jsone.getMessage();
}
}
}
并通过以下方式调用:
NetworkManager manager = new NetworkManager();
String response = manager.post("http://www.example.com/api/", jsonObject);
当我尝试运行App时,在logcat中会提示错误:
android.os.NetworkOnMainThreadException at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1273)
参考其他SO的问题,我添加了以下内容来覆盖该策略:
if (android.os.Build.VERSION.SDK_INT > 9)
{
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}
然而,我认为这是不健康的,我想将NetworkManager
的操作放到后台。怎样做呢?