CODEWITHSUNDEEP
javaandroidandroid-studio
Ben Ghaleb
Ben Ghaleb

Reputation: 483

how to keep activity waiting until loading complete android java

I have a splash screen Activity appear for 10 second while waiting this time the Activity check if tables are created and all data are loaded form server if not it creates tables and load data to DB. every thing is OK but the problem is when loading data take more than 10 seconds the Splash Activity is finished and start another Activity how i can keep splash activity wait until all data are loaded here is my code 

if(! (checkTables()&&checkData())){
      progressDialog.show();
       fillSamples();
       fillExams();
       fillQuestions();
        fillSubQuestions();
        createProfile();
    }

    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {

            progressDialog.dismiss();
            Intent studentAccess = new Intent(SplashScreen.this,Samples.class);
            startActivity(studentAccess);
            finish();
        }
    },10000);

i am using volley StringRequest and ImageRequest to download data and images from remote server

Upvotes: 2

Views: 3007

Answers (2)

Mohammad
Mohammad

Reputation: 739

You can use AsyncTask ,it is better for network calls by creating this inner class 

private class Operation extends AsyncTask<String, Void, String> {

    @Override
    protected String doInBackground(String... params) {
        //do what ever operations you want 
        for (int i = 0; i < 3; i++) {
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                Thread.interrupted();
            }
        }
        return "result";
    }

    @Override
    protected void onPostExecute(String result) {
        Intent i = new Intent(SplashScreen.this, MainActivity.class);
        i.putExtra("data", result);
        startActivity(i);
        finish();
    }

    @Override
    protected void onPreExecute() {}

    @Override
    protected void onProgressUpdate(Void... values) {}
}

and execute the process using private method in splash activity like this 

   new Operation().execute("");

Upvotes: 3

svkaka
svkaka

Reputation: 4022

Network calls should be always called from not main thread.

What you do is that you are making your main thread sleep . Never sleep you main thread. Android will kill your app. Use AsyncTask for network calls (doInBackground) and onPostExectute() do all other things.

Upvotes: 1

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