我有两个活动,当我从活动A移动到B时,B继续重启或“刷新”,当我从B回到A时,它也会不断重启。代码非常大,我在这里发布我认为问题导致的区域:
Thread t = new Thread(new Runnable() {
@Override
public void run() {
while (true) {
deviceStatus();
try {
Thread.sleep(10000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
});
t.start();
这是deviceStatus();
public void deviceStatus(){
try {
RequestQueue requestQueue = Volley.newRequestQueue(InActivate.this);
String URL = "http://gickuwait-dev.com/electionapi/api/DeviceStatus";
JSONObject jsonBody = new JSONObject();
jsonBody.put("device_PK", device_ID2);
final String requestBody = jsonBody.toString();
StringRequest stringRequest = new StringRequest(Request.Method.POST, URL, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
if(response.equals("true")){
Intent intent = new Intent(InActivate.this, Vote.class);
startActivity(intent);
finish();
}else if(response.equals("false")) {
}
// Toast.makeText(getApplicationContext(), response.toString(), Toast.LENGTH_SHORT).show();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e("VOLLEY", error.toString());
}
}) {
@Override
public String getBodyContentType() {
return "application/json; charset=utf-8";
}
@Override
public byte[] getBody() throws AuthFailureError {
try {
return requestBody == null ? null : requestBody.getBytes("utf-8");
} catch (UnsupportedEncodingException uee) {
VolleyLog.wtf("Unsupported Encoding while trying to get the bytes of %s using %s", requestBody, "utf-8");
return null;
}
}
@Override
protected Response<String> parseNetworkResponse(NetworkResponse response) {
String responseString;
String json = null;
try {
json = new String(response.data, HttpHeaderParser.parseCharset(response.headers));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
responseString = String.valueOf(json).trim();
ArrayList<DeviceStatusResponse> list = new ArrayList<DeviceStatusResponse>();
Type listType = new TypeToken<List<DeviceStatusResponse>>() {}.getType();
list = new Gson().fromJson(responseString, listType);
device_Status = list.get(0).getIsActive().toString();
// Toast.makeText(getApplicationContext(), ""+device_Status+" null ", Toast.LENGTH_LONG).show();
return Response.success(device_Status, HttpHeaderParser.parseCacheHeaders(response));
}
};
requestQueue.add(stringRequest);
} catch (JSONException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
}
在活动B中,我有相同的代码来检查数据库中的设备状态,任何帮助将不胜感激
您可以使用Handle检查重复的任务。
private Handler delayHandler = new Handler();
private Runnable runnable = new Runnable() {
@Override
public void run() {
deviceStatus();
driverDelayHandler.postDelayed(runnable, 1000);
}
};
不要忘记取消onStop方法。
delayHandler.removeCallbacks(runnable);