为什么Volley请求在Nexus 4中不起作用？

Question

我有一个片段，要求Volley请求并获取json：

RequestQueue requestQueue = new Volley.newRequestQueue(getContext());

StringRequest jsonArrayRequest = new StringRequest(Request.Method.POST, "..here is url..",
        new Response.Listener<String>() {
            @Override
            public void onResponse(String fakeresponse) {
                System.out.println("json fetched successfully");
            }
        }, new Response.ErrorListener() {
    @Override
    public void onErrorResponse(VolleyError error) {
        System.out.println("failed to fetch json");
    }
}){
    @Override
    protected Map<String, String> getParams() {
        Map<String, String> map = new HashMap<String, String>();
        return map;
    }
};

requestQueue.add(jsonArrayRequest);

当我在Pixel 2的模拟器中运行此代码时，代码正在工作，并且在logcat中获得“成功提取json”。但是，当我在Nexus 4中运行应用程序时，没有任何反应。请求未实现，我什至没有onErrorResponse，但什么都没得到，但这在Logcat中是这样的：

D/: HostConnection::get() New Host Connection established 0xe8b9ee80, tid 8718
I/zygote: android::hardware::configstore::V1_0::ISurfaceFlingerConfigs::hasWideColorDisplay retrieved: 0
I/OpenGLRenderer: Initialized EGL, version 1.4
D/OpenGLRenderer: Swap behavior 1
W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...
D/OpenGLRenderer: Swap behavior 0
D/EGL_emulation: eglCreateContext: 0xebd05360: maj 3 min 0 rcv 3
D/EGL_emulation: eglMakeCurrent: 0xebd05360: ver 3 0 (tinfo 0xebd03280)
D/EGL_emulation: eglMakeCurrent: 0xebd05360: ver 3 0 (tinfo 0xebd03280)