Android Rough Book

Leaning Guideline:   Database :  MySQL. [ 3 days ] Programming Knowledge PRABEESH R K Simplified Coding PRABEESH R K - Android SQLite MySQL Sync - 01 - Understand the Application . API: REST API:  INTEGRATING PHP MYSQL REST API WITH AN ANDROID APP

Alarm Schedule After some times: à Like Clash of royal chest Box [take 3/1 hours to open] =============================. 1.  Take time as milliseconds from user :- activity.xml file 2.      Make a Java class [ Alarm.java ] which extend by BroadcastReceiver class … public class Alarm extends BroadcastReceiver {     @Override     public void onReceive(Context context, Intent intent) {         Toast. makeText (context, “Alarm ..... “ , Toast. LENGTH_LONG ).show();         Vibrator v = (Vibrator)context.getSystemService(Context. VIBRATOR_SERVICE );         v.vibrate( 10000 );     } } 3.     Change the [ AndroidManifest.xml ] file à last part of  <application> …………………. < receiver android :name= ”.Alarm” /> </...

Android & Wifi get my IP get wifi information https://stackoverflow.com /questions/6064510/how-to-get-ip-address-of-the-device-from-code https://stackoverflow.com/questions/32120773/how-to-detect-ip-of-a-device-connected-to-the-same-network how-to-transfer-files-using-wi-fi-pair-connection-in-android WiFiShareFilesExampleAndroid/app/src/main/res/layout developer.android.com/p2p/WifiP2pManager.html -------------------------------------------------------------------------------------------------- When an application needs to fetch the current list of peers, it can request the list of peers with  requestPeers(WifiP2pManager.Channel, WifiP2pManager.PeerListListener) . When the peer list is available  onPeersAvailable(WifiP2pDeviceList)  is called with the device list. --------------------------------------------------------------------------------------------------

webView = (WebView) findViewById(R.id. webview ); //webView.getSettings().setJavaScriptEnabled(true); webView .setWebViewClient( new WebViewClient()); webView .loadUrl( "http://www.javatpoint.com" );

/*All about Calender */ Calendar now = Calendar. getInstance (); // public String day,hour,minutes,seconds; day = String. valueOf (now.get(Calendar. DAY_OF_MONTH )); hour = String. valueOf (now.get(Calendar. HOUR )); minutes = String. valueOf (now.get(Calendar. MINUTE )); seconds = String. valueOf (now.get(Calendar. SECOND )); /*All about Calender */

Timer Class Timer.html A facility for threads to schedule tasks for future execution in a background thread. Tasks may be scheduled for one-time execution, or for repeated execution at regular intervals. Timer timer = new Timer(); timer.schedule( new TimerTask() {     @Override     public void run() {         //do whatever task you want to do after 10 seconds         mediaPlayer .stop();     } }, 10000 ); Handler Class Handler.html Best Handlers  are the best way of communication between the background and UI thread. Generally, Handlers  are associated with message Queue of a Thread and they are used to send messages and runnable to the Message.  Handler  Used to communicate between the UI and Background thread. Handler handler = new Handler(); handler.postDelayed( new Runnable() { @Override public void run() { ...

Android SQLite Database SQLite is a local database, so it doesn't need any server or any online place to keep the date. that's why no need for any ODBC / JDBC  queries /connection for its functionality. It saves its data into a text file and it saves locally into your mobile or Android device. SQLite is an open source database. SQLite supports standard relational database features. Android comes in with built-in SQLite database implementation. so you don't need to install any extra libraries to use SQLite with Android. To create and upgrade a database in your Android application : you create a subclass of SQLiteOpenHelper class.  in the constructor of your subclass, you call the super() method of SQLiteOpenHelper . Start Code: we are going to open an Android project. then we are going to create a java class [ ex: DatabaseHelper .java ] for handling the SQLite database. this class extends SQLiteOpenHelper . implements all the @O...

1.        MediaPlayer mp1; 2.        mp1 = MediaPlayer.create(this,R.raw. a1   ); 3.        mp1.start(); 4.          5.        @Override 6.             protected void onPause   () { 7.                 super.onPause(); 8.                 mp1.release(); 9.             }                                                    ...

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  Sliding Tabs 1. 1st we need 2 library dependencies:  compile 'com.android.support:design:25.3.1' compile 'com.android.support:support-v4:25.3.1' 2. Take some Fragments [Blank]: tab1, tab2, tab3 e.t.c 3.Now the Host Activity [ex:  MainActivity.java  ] should implement all the tabs: [and ovverride methods] public class MainActivity extends AppCompatActivity implements Tab1.OnFragmentInteractionListener, Tab2.OnFragmentInteractionListener, Tab3.OnFragmentInteractionListener, Tab4.OnFragmentInteractionListener { here my host activity is mainActivity and I have 4 tabs so ..... 4. take  ViewPager &  TabLayout   in Host Layout [ex: activity_main.xml] : < android.support.v4.view.ViewPager android :id= "@+id/pager" android :layout_width= "match_parent" android :layout_height= "0dp" android :layout_weight= "4" > </ android.support....

Fragment or Sub Activity: A part of an activity. https://developer.android.com/guide/components/fragments.html Why we use Fragment:            1. Space Utilize            2. Code Reuse. cause fragment can be used just as a template.  [ ex: login form use in 5 activity but code once ] we can change a part of any activity without changing full activity... that part of activity name is fragment. A  Fragment  represents a behavior or a portion of user interface in an  Activity . You can combine multiple fragments in a single activity to build a multi-pane UI and reuse a fragment in multiple activities. You can think of a fragment as a modular section of an activity, which has its own lifecycle, receives its own input events, and which you can add or remove while the activity is running (sort of like a "sub activity" that you can reuse in different activities). the perfect example for a fragmen...