Picasso, Image view is not getting refreshed

Question

I am using Picasso library to load a image into image view, at the very first time it works fine but after that it repeats the same image again if i go back and with some changes launch the activity with the image again.The url is always the same, I have searched and applied many changes its not working please help.

At the same time when i close the app and restart it then also its not getting refreshed and when i hit the url on the browser it shows me the updated image.

          Picasso.with(this)
            .load(Config.API_URL+"/sites/default/files/"+uiidd+".png")
            .memoryPolicy(MemoryPolicy.NO_CACHE)
            .networkPolicy(NetworkPolicy.NO_CACHE)
            .into(imageView); 






     public class Activity_result extends AppCompatActivity {
    Toolbar toolbar;
    private ImageView imageView;
    String uiidd;

    Button testagain_btn;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_result);

        imageView = (ImageView) findViewById(R.id.imageView_chart);
        toolbar = (Toolbar) findViewById(R.id.tool_barresult);
        testagain_btn=(Button)findViewById(R.id.btn_testagain);



        setSupportActionBar(toolbar);
        uiidd = MyApplication.getInstance().getUid();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
            getWindow().setStatusBarColor(getResources().getColor(R.color.color_darkgreen));
        }

       Picasso.with(this)
                .load(Config.API_URL+"/sites/default/files/"+uiidd+".png")
                .into(imageView);
      /*  new Thread(new Runnable() {
            @Override
            public void run() {
                Glide.get(Activity_result.this).clearDiskCache();
            }
        }).start();

      Glide.with(this)
                .load(Config.API_URL+"/sites/default/files/"+uiidd+".png")
              .skipMemoryCache(true)
              .diskCacheStrategy(DiskCacheStrategy.NONE)
              //.signature(new StringSignature(System.currentTimeMillis()))
              .into(imageView);*/

        resultjsonrequest();
     testagain_btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
               /* Intent i = new Intent(Activity_result.this,Activity_knowStatus.class);
                startActivity(i);*/

                final Dialog dialog = new Dialog(Activity_result.this);
                dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
                dialog.setContentView(R.layout.custom_dialoghealthdata);

                dialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));

                ImageView dialogButtonCancel = (ImageView) dialog.findViewById(R.id.imageView_close);
                Button dialogButtonOk = (Button) dialog.findViewById(R.id.btn_ok);
                // Click cancel to dismiss android custom dialog box
                dialogButtonCancel.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        dialog.dismiss();
                    }
                });

                // Your android custom dialog ok action
                // Action for custom dialog ok button click
                dialogButtonOk.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Intent i = new Intent(Activity_result.this,Activity_knowStatus.class);
                        startActivity(i);
                    }
                });

                dialog.show();






            }
        });




    }

    @Override
    protected void onResume() {
        super.onResume();
        Picasso.with(this)
                .load(Config.API_URL+"/sites/default/files/"+uiidd+".png")
                .into(imageView);
    }

    /* @Override
    public void onBackPressed()
    {

finish();

    }*/

    private void resultjsonrequest() {

        Util.showProDialog(Activity_result.this,"Loading....");

        JsonObjectRequest jsonObjReq = new JsonObjectRequest(Request.Method.GET,
                Config.API_URL+"/profile-result-json?userProfileID="+uiidd+"", null, new Response.Listener<JSONObject>() {

            @Override
            public void onResponse(JSONObject response) {


                try {

                    String txt_totalscore1 = response.getString("patient_score");
                    txtvw_totalscore.setText(txt_totalscore1);

                    String txt_chol1 = response.getString("Cholesterol");
                    txt_chol.setText(txt_chol1);
                    String cholcolor = response.getString("cholesterolPointColor");
                    linear_chol.setBackgroundColor(Color.parseColor(cholcolor));

                    String txt_trigly1 = response.getString("Triglycerides");
                    txt_trigly.setText(txt_trigly1);
                    String triglycolor = response.getString("triglycerideScoreColor");
                    linear_trigly.setBackgroundColor(Color.parseColor(triglycolor));

                    String txt_hdlchol1 = response.getString("HDLCholesterol %");
                    txt_hdl_chol.setText(txt_hdlchol1);
                    String hdlchl1color = response.getString("hDL_cholesterol_scoreColor");
                    linear_hdl_chol.setBackgroundColor(Color.parseColor(hdlchl1color));

                    String txt_sysbp1 = response.getString("SystolicBP");
                    txt_systolicbp.setText(txt_sysbp1);
                    String systoiccolor = response.getString("systolic_bp_scoreColor");
                    linear_systolicbp.setBackgroundColor(Color.parseColor(systoiccolor));

                    String txt_disys1 = response.getString("DiastolicBP");
                    txt_disystolicbp.setText(txt_disys1);
                    String disyscolor = response.getString("diastolic_bp_scoreColor");
                    linear_disystolicbp.setBackgroundColor(Color.parseColor(disyscolor));

                    String txsugarf1 = response.getString("Blood Sugar Fasting (FF)");
                    txt_bloodsugarff.setText(txsugarf1);
                    String sugarfcolor = response.getString("bl_glucode_ff_scoreColor");
                    linear_bloodsugarff.setBackgroundColor(Color.parseColor(sugarfcolor));


                    String txsugarp1 = response.getString("Blood Sugar (PP)");
                    txt_bloodsugarpp.setText(txsugarp1);
                    String sugarpcolor = response.getString("bl_glucose_pp_scoreColor");
                    linear_bloodsugarpp.setBackgroundColor(Color.parseColor(sugarpcolor));

                    String txsmoking1 = response.getString("Smoking");
                    txt_smoking.setText(txsmoking1);
                    String smokingcolor = response.getString("Smoking_ScoreColor");
                    linear_smoking.setBackgroundColor(Color.parseColor(smokingcolor));


                    String txbmi = response.getString("BMI");
                    txt_bmi.setText(txbmi);
                    String bmicolor = response.getString("BMI_ScoreColor");
                    linear_bmi.setBackgroundColor(Color.parseColor(bmicolor));

                    String txwalking1 = response.getString("Walking");
                    txt_walking.setText(txwalking1);
                    String walkingcolor = response.getString("walkingPointColor");
                    linear_walking.setBackgroundColor(Color.parseColor(walkingcolor));

                    String txt_oil1 = response.getString("Oil Intake");
                    txt_oil.setText(txt_oil1);
                   String oilcolor = response.getString("oil_ghee_intake_scoreColor");
                   linear_oil.setBackgroundColor(Color.parseColor(oilcolor));


                    String txmilk1 = response.getString("MilkDairy Intake");
                    txt_milk.setText(txmilk1);
                    String milkcolor = response.getString("milk_dairy_intake_scoreColor");
                    linear_milk.setBackgroundColor(Color.parseColor(milkcolor));

                    String txfruit1 = response.getString("Fruits Intake");
                    txt_fruit.setText(txfruit1);
                    String fruitcolor = response.getString("Vegitable_ScoreColor");
                    linear_fruit.setBackgroundColor(Color.parseColor(fruitcolor));

                    String txt_vegetable1 = response.getString("Vegetables Intake");
                    txt_vegetable.setText(txt_vegetable1);
                    String vegetablecolor = response.getString("vegetable_you_intake_scoreColor");
                    linear_vegetable.setBackgroundColor(Color.parseColor(vegetablecolor));

                    String txnonveg1 = response.getString("Animal Food");
                    txt_nonveg.setText(txnonveg1);
                    String nonvegcolor = response.getString("intake_non_veg_scoreColor");
                    linear_nonveg.setBackgroundColor(Color.parseColor(nonvegcolor));

                    String txyoga1 = response.getString("Yoga");
                    txt_yoga.setText(txyoga1);
                    String yogacolor = response.getString("yoga_or_stretching_exercis_scoreColor");
                    linear_yoga.setBackgroundColor(Color.parseColor(yogacolor));

                    String txmeditation1 = response.getString("MeditationPranayam");
                    txt_meditation.setText(txmeditation1);
                    String meditationcolor = response.getString("meditation_prayer_scoreColor");
                    linear_meditation.setBackgroundColor(Color.parseColor(meditationcolor));

                    String txstress1 = response.getString("Stress Management");
                    txt_stress.setText(txstress1);
                    String stresscolor = response.getString("stress_mgmt_scoreColor");
                    linear_stress.setBackgroundColor(Color.parseColor(stresscolor));






                } catch (JSONException e) {
                    e.printStackTrace();
                    Util.showMessageDialog(Activity_result.this, "Server error! Try Again");
                }
                Util.dimissProDialog();
            }
        }, new Response.ErrorListener() {

            @Override
            public void onErrorResponse(VolleyError error) {
               Util.dimissProDialog();
                Util.showMessageDialog(Activity_result.this, "Server error! Try Again");
            }
        });
        jsonObjReq.setRetryPolicy(new DefaultRetryPolicy(
                10000,
                DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
                DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));

        // Adding request to request queue
       // MyApplication.getInstance().addToRequestQueue(jsonObjReq);
        RequestQueue requestQueue = Volley.newRequestQueue(this);
        requestQueue.add(jsonObjReq);
    }






}

Answer 1

I have got the solution of the above problem, The main reason of the problem was the same url with the updated image, so I added a token to the url with randomly generated number everytime,hence the url gets changed and the image gets updated.

    double token=0;
    token=Math.random();
    Picasso.with(getApplicationContext()).invalidate("");
    Picasso.with(this)
                 .load(Config.API_URL+"/sites/default/files/"+uiidd+".png?"+token)
            .memoryPolicy(MemoryPolicy.NO_CACHE)
            .networkPolicy(NetworkPolicy.NO_CACHE)
            .into(imageView_chartt);

Answer 2

try this :

Picasso.with(this)
        .load(Config.API_URL+"/sites/default/files/"+uiidd+".png")
        .into(imageView);

it is always a good idea to Cache your images ,until a forced refresh is required at every instance

secondly call this from onResume of your activity instead of onCreate,if you want the image to reload each time to come back to this activity from any other location