Java tutorial
package com.app.sniffy; import java.io.IOException; import java.net.URI; import java.net.URISyntaxException; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Timer; import java.util.TimerTask; import org.apache.http.client.ClientProtocolException; import org.json.JSONException; import org.json.JSONObject; import android.app.Activity; import android.app.ActivityManager; import android.app.ActivityManager.RunningServiceInfo; import android.app.AlertDialog; import android.app.ProgressDialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.os.AsyncTask; import android.os.Bundle; import android.telephony.TelephonyManager; import android.util.Log; import android.view.LayoutInflater; import android.view.Menu; import android.view.View; import android.webkit.WebView; import android.webkit.WebViewClient; import android.widget.CheckBox; import android.widget.RelativeLayout; import android.widget.TextView; public class MainActivity extends Activity { Timer timer; public static final String PREFS_NAME = "SniffyKey"; SharedPreferences settings; String storedKey; Activity context; boolean userConsent; String mDeviceId; private final DateFormat df = new SimpleDateFormat("hh:mm,a,E,MMMMM dd"); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); settings = getSharedPreferences(PREFS_NAME, 0); storedKey = settings.getString("key", null); userConsent = settings.getBoolean("userconsent", false); context = this; // getting device id like IMEI no. TelephonyManager tMgr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE); mDeviceId = tMgr.getDeviceId(); if (userConsent == false) { showTerms(); } else if (storedKey == null) { try { new GetKey(this).execute(new URI(Utils.getConfigProperty(getResources(), "generate-key") + mDeviceId + Utils.getConfigProperty(getResources(), "securekey"))); } catch (URISyntaxException e1) { Log.d("main activity key generate", e1.toString()); } } } @Override public void onStart() { super.onStart(); SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0); if (settings.getString("key", null) != null) { if (!isMyServiceRunning()) { // intent to start service Intent mServiceIntent = new Intent(this, SentBoxService.class); startService(mServiceIntent); } } if (storedKey != null) { timer = new Timer(); timer.schedule(new TimerTask() { @Override public void run() { runOnUiThread(new Runnable() { public void run() { String currentTime = df.format(new Date()); String[] time = currentTime.split(","); TextView digi_time = (TextView) findViewById(R.id.digi_time); digi_time.setText(time[0]); TextView digi_time_meredian = (TextView) findViewById(R.id.digi_time_meredian); digi_time_meredian.setText(time[1]); TextView digi_time_day = (TextView) findViewById(R.id.digi_time_day); digi_time_day.setText(time[2] + ","); TextView digi_time_date = (TextView) findViewById(R.id.digi_time_date); digi_time_date.setText(time[3]); } }); } }, 0, 1000); } } @Override public void onStop() { super.onStop(); if (timer != null) timer.cancel(); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.activity_main, menu); return true; } private boolean isMyServiceRunning() { ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE); for (RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) { if (SentBoxService.class.getName().equals(service.service.getClassName())) { return true; } } return false; } protected class GetKey extends AsyncTask<URI, Void, String> { ProgressDialog dialog; Activity activ; public GetKey(Activity activ) { this.activ = activ; } @Override protected String doInBackground(URI... url) { publishProgress(); int count = url.length; String result = ""; for (int i = 0; i < count; i++) { try { result = APICall.makeConnection(url[i]); } catch (ClientProtocolException e) { Log.d("Main activity api call", e.toString()); } catch (IOException e) { Log.d("Main activity api call", e.toString()); } } return result; } @Override protected void onPostExecute(String result) { if (dialog != null) dialog.dismiss(); String key = null; try { JSONObject keyObject = new JSONObject(result); key = keyObject.getString("key"); } catch (JSONException e) { Log.d("Main activity json exception", e.toString()); } RelativeLayout digi_clock_layout = (RelativeLayout) findViewById(R.id.digi_clock_layout); digi_clock_layout.setVisibility(View.GONE); if (key != null) { SharedPreferences.Editor editor = settings.edit(); editor.putString("key", key); editor.commit(); if (!isMyServiceRunning()) { // intent to start service Intent mServiceIntent = new Intent(context, SentBoxService.class); startService(mServiceIntent); } TextView keyText = (TextView) findViewById(R.id.key); keyText.setText("Thanks, please use this key to register : " + key); } else { TextView keyText = (TextView) findViewById(R.id.key); keyText.setText("We encounter some problem please try again later."); } } @Override protected void onProgressUpdate(Void... voids) { dialog = ProgressDialog.show(activ, "", "Wait while we register your no.", true); } } public void showTerms() { LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); final View dialoglayout = inflater.inflate(R.layout.terms, null); WebView webView = (WebView) dialoglayout.findViewById(R.id.termsView); webView.loadUrl("file:///android_asset/license.html"); AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle("Terms & Conditions"); builder.setView(dialoglayout).setCancelable(false).setPositiveButton("OK", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { CheckBox checkBox = (CheckBox) dialoglayout.findViewById(R.id.checkBox); if (checkBox.isChecked()) { SharedPreferences.Editor editor = settings.edit(); editor.putBoolean("userconsent", true); editor.commit(); try { new GetKey(context).execute( new URI(Utils.getConfigProperty(getResources(), "generate-key") + mDeviceId + Utils.getConfigProperty(getResources(), "securekey"))); } catch (URISyntaxException e1) { Log.d("main activity key generate", e1.toString()); } } else { showTerms(); } } }); AlertDialog alert = builder.create(); alert.show(); } }