Develop Reference

how can i Create notification

how can i create notification
when the date current equals date in the base data(mysql)
then the notification created with information.
i dont know how can i create the notification with this setting
please help me it's for project
btn.setOnClickListener(new View.OnClickListener() {
#override
public void onClick(final View view) {
StringRequest request = new StringRequest(Request.Method.POST, insert, new Response.Listener<String>() {
#override
public void onResponse(String response) {
}
}, new Response.ErrorListener() {
#override
public void onErrorResponse(VolleyError error) {
progressDialog.dismiss();
Toast.makeText(partietache.this,error.toString(),Toast.LENGTH_LONG).show();
}
}){
#override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> para = new HashMap<String , String>();
para.put("taskname", ed1.getText().toString().trim());
para.put("totalwork",ed4.getText().toString().trim());
para.put("datetask",ed2.getText().toString().trim());
para.put("starttime",ed3.getText().toString().trim());
para.put("description",ed5.getText().toString().trim());
return para;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(partietache.this);
requestQueue.add(request);
Snackbar snackbar = Snackbar.make(view,"Add with Succesful" , Snackbar.LENGTH_LONG);
snackbar.show();
new Timer().schedule(new TimerTask(){
public void run() {
partietache.this.runOnUiThread(new Runnable() {
#override
public void run() {
finish();
}
});
}
} , 4000);
}
});
#override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
if (not.isChecked()) {
Toast.makeText(getApplicationContext() , "Notification " + not.getTextOn().toString() , Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(getApplicationContext() , "Notification " + not.getTextOff().toString() , Toast.LENGTH_SHORT).show();
}
}

In order to use push notifications you will need to do both server-side and client-side coding. Describing the whole process in detail would be too much for an SO answer, you should take a look at one of the many tutorials available online. Here's one to get you started.

Unable to send post request with volley android like ajax

I have a problem with volley, I googled around for samples to upload the image
with volley, however, since I'm a beginner, I have a hard time trying to make my code that works in
ajax into android (Trying to do the eact same thing with volley). The following code is what I want to do with android
volley Multipart. Some tips or examples will be great. I would love to hear from you!
$.ajax({
type: 'post',
processData: false,
contentType: false,
data: "/imagepath/sample.PNG",
url: "https://linktotheimageuploader/upload",
async: true,
success: function (res) {
if (res.status == 0) {
console.log(res);
} else {
// NOP
}
}
, error: function () {
//failed to upload
}
});
I tried to convert it to Volley android like the following but I am unable to achieve what I want to do.
public void uploadImage(String url , final File fileName) {
final File encodedString = fileName;
RequestQueue rq = Volley.newRequestQueue(this);
Log.d("URL", url);
StringRequest stringRequest = new StringRequest(Request.Method.POST,
url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
try {
Log.e("RESPONSE", response);
JSONObject json = new JSONObject(response);
Toast.makeText(getBaseContext(),
"The image is upload" +response, Toast.LENGTH_SHORT)
.show();
} catch (JSONException e) {
Log.d("JSON Exception", e.toString());
Toast.makeText(getBaseContext(),
"Error while loadin data!",
Toast.LENGTH_LONG).show();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.d("ERROR", "Error [" + error + "]");
Toast.makeText(getBaseContext(),
"Cannot connect to server", Toast.LENGTH_LONG)
.show();
}
}) {
#Override
protected Map<String, String> getParams() {
Map<String, String> params = new HashMap<String, String>();
params.put(encodedString); // I want to set the file not a String,
return params;
}
};
rq.add(stringRequest);
}

First, To get callBack from the server in MultipartUploadRequest, create a class by extending the UploadServiceBroadcastReceiver
public class SingleUploadBroadcastReceiver extends UploadServiceBroadcastReceiver {
public interface Delegate {
void onProgress(int progress);
void onProgress(long uploadedBytes, long totalBytes);
void onError(Exception exception);
void onCompleted(int serverResponseCode, byte[] serverResponseBody);
void onCancelled();
}
private String mUploadID;
private Delegate mDelegate;
public void setUploadID(String uploadID) {
mUploadID = uploadID;
}
public void setDelegate(Delegate delegate) {
mDelegate = delegate;
}
#Override
public void onProgress(String uploadId, int progress) {
if (uploadId.equals(mUploadID) && mDelegate != null) {
mDelegate.onProgress(progress);
}
}
#Override
public void onProgress(String uploadId, long uploadedBytes, long totalBytes) {
if (uploadId.equals(mUploadID) && mDelegate != null) {
mDelegate.onProgress(uploadedBytes, totalBytes);
}
}
#Override
public void onError(String uploadId, Exception exception) {
if (uploadId.equals(mUploadID) && mDelegate != null) {
mDelegate.onError(exception);
}
}
#Override
public void onCompleted(String uploadId, int serverResponseCode, byte[] serverResponseBody) {
if (uploadId.equals(mUploadID) && mDelegate != null) {
mDelegate.onCompleted(serverResponseCode, serverResponseBody);
}
}
#Override
public void onCancelled(String uploadId) {
if (uploadId.equals(mUploadID) && mDelegate != null) {
mDelegate.onCancelled();
}
}
}
Then, in your activity:
public class YourActivity extends Activity implements SingleUploadBroadcastReceiver.Delegate {
private static final String TAG = "AndroidUploadService";
private final SingleUploadBroadcastReceiver uploadReceiver =
new SingleUploadBroadcastReceiver();
#Override
protected void onResume() {
super.onResume();
uploadReceiver.register(this);
}
#Override
protected void onPause() {
super.onPause();
uploadReceiver.unregister(this);
}
public void uploadMultipart(final Context context) {
try {
String uploadId = UUID.randomUUID().toString();
uploadReceiver.setDelegate(this);
uploadReceiver.setUploadID(uploadId);
new MultipartUploadRequest(context, uploadId, "http://upload.server.com/path")
.addFileToUpload("/absolute/path/to/your/file", "your-param-name")
.setNotificationConfig(new UploadNotificationConfig())
.setMaxRetries(2)
.startUpload();
} catch (Exception exc) {
Log.e(TAG, exc.getMessage(), exc);
}
}
#Override
public void onProgress(int progress) {
//your implementation
}
#Override
public void onProgress(long uploadedBytes, long totalBytes) {
//your implementation
}
#Override
public void onError(Exception exception) {
//your implementation
}
#Override
public void onCompleted(int serverResponseCode, byte[] serverResponseBody) {
//your implementation
}
#Override
public void onCancelled() {
//your implementation
}
}

I have done this with Volley in two different ways:
Sending the image as a Base64 encoded string
Sending the image as multipart
Sending it as encoded String
This method will encode a bitmap into a Base64 String which you can send as a parameter in your request. Then, the server can decode the String back to an image.
public String bitmapToString(Bitmap bmp){
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] imageBytes = baos.toByteArray();
String encodedImage = Base64.encodeToString(imageBytes, Base64.DEFAULT);
return encodedImage;
}
StringRequest stringRequest = new StringRequest(Request.Method.POST,
url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
}) {
#Override
protected Map<String, String> getParams() {
Map<String, String> params = new HashMap<String, String>();
params.put("image", bitmapToString(BitmapFactory.decodeFile(filePath)));
return params;
}
};
Sending it as Multipart
This is a little bit more tricky since you'll need to use custom classes made by some dude named anggadarkprince, but it's way faster than the first option
VolleyMultipartRequest multipartRequest = new VolleyMultipartRequest(Request.Method.POST, url, new Response.Listener<NetworkResponse>() {
#Override
public void onResponse(NetworkResponse response) {
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
}) {
#Override
protected Map<String, DataPart> getByteData() {
Map<String, DataPart> params = new HashMap<>();
RandomAccessFile f = null;
try {
f = new RandomAccessFile(filePath, "r");
} catch (FileNotFoundException e) {
e.printStackTrace();
return null;
}
byte[] b;
try {
b = new byte[(int)f.length()];
f.readFully(b);
} catch (IOException e) {
e.printStackTrace();
return null;
}
params.put("image", new DataPart("image.jpg", b, "image/jpeg"));
return params;
}
};
Here you'll find the class you need to do this.

Android JobScheduler API

I am sending a request to a server using Volley in a JobService. My question is, since the service runs on the main thread, should I create a seperate thread inside the service and call my Volley request there, or simple call the volley request? Here is some of my code.
public class JobService extends android.app.job.JobService {
static int count = 0;
#Override
public boolean onStartJob(final JobParameters jobParameters) {
Log.d("Job Service", "onStartJob " + count);
final SharedPreferences prefs = getSharedPreferences(LOGIN_PREFS, MODE_PRIVATE);
RequestQueue queue = Volley.newRequestQueue(this);
StringRequest request = new StringRequest(Request.Method.POST, URL, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Log.d("Job Service", "onResponse");
try {
writeFileToCache(response);
jobFinished(jobParameters, true);
} catch (Exception e) {
e.printStackTrace();
jobFinished(jobParameters, true);
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.d("Volley error job", error.toString());
jobFinished(jobParameters, true);
}
}) {
#Override
protected Map<String, String> getParams() throws AuthFailureError {
HashMap<String, String> params = new HashMap<>();
params.put("regno", prefs.getString(REG_NO, ""));
params.put("bdate", prefs.getString(DATE_OF_BIRTH, ""));
return params;
}
};
request.setRetryPolicy(new DefaultRetryPolicy(12000, 0, 0f));
queue.add(request);
return true;
}
private void writeFileToCache(String response) throws IOException {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_DENIED) {
return;
}
File file = new File(getExternalCacheDir() + CACHE_FILE);
FileOutputStream fout = new FileOutputStream(file);
Log.d("Writing to cache job", response);
fout.write(response.getBytes());
fout.close();
}
#Override
public boolean onStopJob(JobParameters jobParameters) {
Log.d("Job Service", "onStopJob");
return false;
}

How to use Call Type with EventBus

I am using EventBus to notify Activity/Fragment when I get response from the server. Everything works good so far, but problem arises when I consume two network calls in same Fragment or Activity. The problem is the same method onEvent(String response) get calls for both responses from server. The response of call 1 is different from call 2.
I came up with a solution - I added CallType in NetworkReqest but I can't notify the activity/fragment about the network call since post() takes only one parameter.
Here is the relevant code -
public class NetworkRequest {
EventBus eventBus = EventBus.getDefault();
public void stringParamRequest(String url, final Map<String, String> params,String callType) {
StringRequest jsonObjRequest = new StringRequest(Request.Method.POST, url,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
eventBus.post(response);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d("volley", "Error: " + error.getMessage());
eventBus.post(error);
}
}) {
#Override
public String getBodyContentType() {
return "application/x-www-form-urlencoded; charset=UTF-8";
}
#Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> param = params;
return param;
}
};
SkillSchoolApplication.get().addToRequestQueue(jsonObjRequest);
}
public void stringRequest(String url, String callType) {
StringRequest stringRequest = new StringRequest(url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
eventBus.post(response);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});
SkillSchoolApplication.get().addToRequestQueue(stringRequest);
}
}
Method Inside the fragment/activity Here arise the problem when after getting the response from one request i fire another request which is dependent of the respose of the first request
#Subscribe(threadMode = ThreadMode.MAIN)
public void onEvent(String response) {
Log.d(TAG, response);
boolean isCourseAvaible = false;
if (!isCourseAvaible) {
isCourseAvaible = true;
List<CoursesDTO> coursesDTOs = AppMgr.coursesMgr(response);
String[] ids = new String[0];
String id;
if (coursesDTOs != null) {
ids = new String[coursesDTOs.size()];
for (int i = 0; i < coursesDTOs.size(); i++) {
ids[i] = coursesDTOs.get(i).getListId();
}
}
id = TextUtils.join(",", ids);
Map<String, String> map = new HashMap<>();
map.put("part", "snippet,contentDetails");
map.put("playlistId", id);
map.put("key", AppConstants.YOUTUBE_KEY);
NetworkRequest networkRequest = new NetworkRequest();
networkRequest.stringParamRequest("some url", map);
} else {
Log.d(TAG, response);
}
}
#Subscribe(threadMode = ThreadMode.MAIN)
public void onEvent(VolleyError error) {
Log.d(TAG, error.toString());
Toast.makeText(getActivity(), "Something went wrong " + error.toString(), Toast.LENGTH_SHORT).show();
}
How can I differentiate the callType within onEvent(). Some guidance is required. Thanks much.

One option is to wrap the two pieces of data you need into a class and pass that to event bus. Leaving off private members, getters/setters and constructors for brevity.
class NetworkResponse() {
public String callType;
public String response;
}
When you get a response, allocate a NetworkResponse and populate it with the response and the call type and post that to the event bus.
#Subscribe(threadMode = ThreadMode.MAIN)
public void onEvent(NetworkResponse networkResponse) {
if(networkResponse.callType.equals(CALL_1)) {
// ...
} else if (networkResponse.callType.equals(CALL_2)) {
// ...
}
}

Serialize the String response to a java bean in the onResponse method, and emit the right object to the views. Activities, Fragments and Views have no need to know about serialization, and besides, your app's performance can improve, since you can modify your code to serialize the data in a background thread.
public void stringRequest(String url, String callType) {
StringRequest stringRequest = new StringRequest(url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
eventBus.post(AppMgr.coursesMgr(response));
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});
SkillSchoolApplication.get().addToRequestQueue(stringRequest);
}
Then your first event subscription will look like this:
#Subscribe(threadMode = ThreadMode.MAIN)
public void onEvent(List<CoursesDTO> coursesDTOs) {
Log.d(TAG, response);
boolean isCourseAvaible = false;
if (!isCourseAvaible) {
isCourseAvaible = true;
String[] ids = new String[0];
String id;
if (coursesDTOs != null) {
ids = new String[coursesDTOs.size()];
for (int i = 0; i < coursesDTOs.size(); i++) {
ids[i] = coursesDTOs.get(i).getListId();
}
}
id = TextUtils.join(",", ids);
Map<String, String> map = new HashMap<>();
map.put("part", "snippet,contentDetails");
map.put("playlistId", id);
map.put("key", AppConstants.YOUTUBE_KEY);
NetworkRequest networkRequest = new NetworkRequest();
networkRequest.stringParamRequest("some url", map);
} else {
Log.d(TAG, response);
}
}
and you can have a second, different, String subscription. But since you are going to make the second call anyway, it would be best to execute it directly after getting the right answer from the first one.
public class NetworkRequest {
EventBus eventBus = EventBus.getDefault();
public void stringParamRequest(String url, final Map<String, String> params,String callType) {
StringRequest jsonObjRequest = new StringRequest(Request.Method.POST, url,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
eventBus.post(response);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d("volley", "Error: " + error.getMessage());
eventBus.post(error);
}
}) {
#Override
public String getBodyContentType() {
return "application/x-www-form-urlencoded; charset=UTF-8";
}
#Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> param = params;
return param;
}
};
SkillSchoolApplication.get().addToRequestQueue(jsonObjRequest);
}
public void stringRequest(String url, String callType) {
StringRequest stringRequest = new StringRequest(url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
List<CoursesDTO> coursesDTOs = AppMgr.coursesMgr(response);
String[] ids = new String[0];
String id;
if (coursesDTOs != null) {
ids = new String[coursesDTOs.size()];
for (int i = 0; i < coursesDTOs.size(); i++) {
ids[i] = coursesDTOs.get(i).getListId();
}
}
id = TextUtils.join(",", ids);
Map<String, String> map = new HashMap<>();
map.put("part", "snippet,contentDetails");
map.put("playlistId", id);
map.put("key", AppConstants.YOUTUBE_KEY);
NetworkRequest networkRequest = new NetworkRequest();
networkRequest.stringParamRequest("some url", map);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});
SkillSchoolApplication.get().addToRequestQueue(stringRequest);
}
}
Finally, this two lines
boolean isCourseAvaible = false;
if (!isCourseAvaible) {
are superfluous, is like having no condition.

Execute a Volley request after another one is finished

I have two Volley requests. The first request authenticates the user; the second one gets data from the server.
If I send a GET request and the user is not authenticated, I want to fire the first request, authenticate the user and then keep executing the second one once the user is successfully authenticated.

So, the solution is pretty simple. :)
After I learned about callbacks and how them work, I figured out how to do that. So, I implemented a interface that declared the methods I wanted to invoke:
public interface AuthenticationCallback {
public void onLoginSuccess(String result);
public void onLoginError(String result);
}
public interface ResponseCallback {
public void onLoginSuccess(String result);
public void onAuthorizationError(String result);
}
My function:
public void getConversationMessages(final Context context, final String conversationID, final ResponseCallback responseCallback) {
final String url = GET_CONVERSATION_MESSAGES + conversationID;
StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
if (responseCallback != null) {
responseCallback.onLoginSuccess(response);
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
if (error.networkResponse != null && error.networkResponse.statusCode == HttpURLConnection.HTTP_UNAUTHORIZED){
if (responseCallback != null) {
responseCallback.onAuthorizationError(error.getMessage());
}
}
}
})
{
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
HashMap<String, String> headers = new HashMap<String, String>();
headers.put("Cookie", AppSingleton.getInstance(context).getCookie());
headers.put("Content-Type", "application/json");
return headers;
}
};
AppSingleton.getInstance(context).getRequestQueue().add(stringRequest);
}
}
My Activity:
ServerConnection.getInstance().getConversationMessages(getApplicationContext(), id, new ResponseCallback() {
#Override
public void onLoginSuccess(String result) {
}
#Override
public void onAuthorizationError(String result) {
ServerConnection.getInstance().loginFunction(getApplicationContext(), userID, new AuthenticationCallback() {
#Override
public void onLoginSuccess(String result) {
ServerConnection.getInstance().getConversationMessages(getApplicationContext(), conID, new ResponseCallback() {
#Override
public void onLoginSuccess(String result) {
}
#Override
public void onAuthorizationError(String result) {
}
});
}
#Override
public void onLoginError(String result) {
}
});
}
});
Basically, the code will try to send a GETrequest. If the user is not authenticated, then it will execute the code at onAuthorizationError(), that will authenticate the user. Once the user is successfully authenticate, it will send the GET request again.
I think nesting callbacks like this is not a good practice, but I'll fix it later and update my answer.
If someone have a better way to implement that, please, post another answer!

You can put one volley method inside another, as soon as the first request gets finished it sends the another request.By doing this the data will be sent to the database and the same modified data can be fetched again. The code is as shown below.
StringRequest stringRequest = new StringRequest(Request.Method.POST, "YOUR_FIRST_URL", new Response.Listener < String > () {
#Override
public void onResponse(String response) {
StringRequest stringRequests = new StringRequest(Request.Method.POST, "YOUR_SECOND_URL", new Response.Listener < String > () {
#Override
public void onResponse(String response) {
try {
JSONArray genreArry = new JSONArray(response);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
}) {
#Override
protected Map < String, String > getParams() {
Map < String, String > params = new HashMap < String, String > ();
return params;
}
};
int socketTimeouts = 30000;
RetryPolicy policys = new DefaultRetryPolicy(socketTimeouts, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT);
stringRequests.setRetryPolicy(policys);
RequestQueue requestQueues = Volley.newRequestQueue(context);
requestQueues.add(stringRequests);
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
}) {
#Override
protected Map < String, String > getParams() {
Map < String, String > params = new HashMap < String, String > ();
return params;
}
};
int socketTimeout = 30000;
RetryPolicy policy = new DefaultRetryPolicy(socketTimeout, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT);
stringRequest.setRetryPolicy(policy);
RequestQueue requestQueue = Volley.newRequestQueue(context);
requestQueue.add(stringRequest);