I am using OkHttpClient to get the Staff List (in JSON form) as response using AsyncTask Function. After getting the response in AsyncTask funtion, while inserting staff list in database, I want to show the count on the screen. but it gives following error. I tried many solutions, but couldn't resolve.
Following is the synchronizeStaffList Activity that calls SenkronizeEt Funtion using handler. public class synchronizeStaffList extends AppCompatActivity {
DatabaseHelper gksDatabase;
TextView txtrecordValue;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_synchronize_staff_list);
gksDatabase = new DatabaseHelper(this);
txtrecordValue = (TextView) findViewById(R.id.txtrecordValue);
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
//Do something after 100ms
SenkronizeEt();
}
}, 500);
final Handler handler2 = new Handler();
handler2.postDelayed(new Runnable() {
@Override
public void run() {
//Do something after 100ms
AlertDialog.Builder builder;
builder = new AlertDialog.Builder(synchronizeStaffList.this);
builder.setCancelable(false);
if (progressStaffListInfo == 0) {
builder.setMessage("Sunucu ile iletişim yok");
} else if (progressStaffListInfo == 1) {
builder.setMessage("Sicil/Personel listesi güncellendi");
}
builder.setPositiveButton("Tamam", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// if user pressed "MINIMIZE", cancel this dialog & minimize the application
// while attendance process will keep working in the back
// finish();
startActivity(new Intent(synchronizeStaffList.this, synchronize.class));
finish();
}
});
AlertDialog alert = builder.create();
alert.show();
}
}, 5000);
}
I uses second handler to show an alertbox.
Following the SenkronizeEt Function that call OkHttpHandler AsyncTask function to get the okHttpResponse/result
public int progressStaffListInfo = 0; // 0: List no updated, 1: List updated,
private void SenkronizeEt() {
progressStaffListInfo = 0;
// Updating Staff List in device by calling webservices
HashMap<String, String> Parametre = gksDatabase.GetParameter();
final String urlStaffList = "http://127.0.0.1:8080/JAXRSJsonCRUDExample/rest/employees/" + Parametre.get("DeviceNo");
OkHttpHandler handler = new OkHttpHandler();
String jsonEmployeesList = null;
try {
jsonEmployeesList = handler.execute(urlStaffList).get();
} catch (Exception e) {
//tv.setText("sorry, something went wrong !");
}
if (progressStaffListInfo == 0) {
Toast.makeText(synchronizeStaffList.this, "List Not Updated", Toast.LENGTH_SHORT).show();
} else if (progressStaffListInfo == 1) {
Toast.makeText(synchronizeStaffList.this, "List updated in database", Toast.LENGTH_SHORT).show();
}
}
Here is the OkHttpHandler AsyncTask function that call the URL to get the response and then update it in database.
public class OkHttpHandler extends AsyncTask<String, Integer, String> {
OkHttpClient client = new OkHttpClient();
@Override
protected String doInBackground(String... params) {
Request.Builder builder = new Request.Builder();
builder.url(params[0]);
Request request = builder.build();
try {
Response response = client.newCall(request).execute();
// return response.body().string();
String jsonData = response.body().string();
//JSONObject Jobject = new JSONObject(jsonData);
//JSONArray Jarray = Jobject.getJSONArray("employees");
JSONArray Jarray = new JSONArray(jsonData);
//get the length of the json array
int limit = Jarray.length();
if (limit != 0) {
gksDatabase.PersonsDelete();
progressStaffListInfo = 1; // Staff List updated
}
for (int i = 0; i < limit; i++) {
JSONObject object = Jarray.getJSONObject(i);
//store the data into database
// SId:StaffID SNo:StaffNumber SN:StaffName CNo:CardNumber
gksDatabase.PersonsSave(Integer.parseInt(object.getString("sid")), object.getString("sno"), object.getString("sn"),
object.getString("cno")
);
publishProgress((int) (((i+1) / (float) limit) * 100));
}
return jsonData;
} catch (JSONException e) {
progressStaffListInfo = 0;
} catch (Exception e) {
e.printStackTrace();
progressStaffListInfo = 0;
}
return null;
}
@Override
protected void onProgressUpdate(Integer... progress) {
setProgressPercent(progress[0]);
}
}
private void setProgressPercent(int progValue){
txtrecordValue.setText(progValue);
}
In above AsyncTask function, it gives error when it try to display the count of entries inserted in database.
Actually, not only this. if I set any thing (Like progressbar or count) on different thread, even then it stops till the asyncTask finishes its work. As an example AlertDialog handler also starts when AsyncTask function finishes all its work.
Following are the logs:
E/AndroidRuntime: FATAL EXCEPTION: main android.content.res.Resources$NotFoundException: String resource ID #0x0
at android.content.res.Resources.getText(Resources.java:249)
at android.support.v7.widget.ResourcesWrapper.getText(ResourcesWrapper.java:52)
at android.widget.TextView.setText(TextView.java:3796)
at com.emiturk.gsk.synchronizeStaffList.setProgressPercent(synchronizeStaffList.java:172)
at com.emiturk.gsk.synchronizeStaffList.access$100(synchronizeStaffList.java:25)
at com.emiturk.gsk.synchronizeStaffList$OkHttpHandler.onProgressUpdate(synchronizeStaffList.java:167)
at com.emiturk.gsk.synchronizeStaffList$OkHttpHandler.onProgressUpdate(synchronizeStaffList.java:116)
at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:647)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4810)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
at dalvik.system.NativeStart.main(Native Method
Kindly help me out.
