/Important-Basic-Android-Codes

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Important-Basic-Android-Codes

Button

Button sites =  (Button) findViewById(R.id.site);
        sites.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
            }
        });

or XML

   <Button
            android:id="@+id/pick_photo"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Pick Photo"
            android:onClick="pickPhotoClicked"
            />

Java

public void pickPhotoClicked(View view) {
//Action
}

Intent

Intent intent = new Intent(this, MainActivity.class);
        startActivity(intent);

or

Intent intent = new Intent("com.the.name");
startActivity(i);

how to reference non static method from static mehod

((YourActivityName) getContext()).setAdapter(selectedTabPosition);

Viration

Vibrator = v; // Global

v = (Vibrator) getApplicationContext().getSystemService(Context.VIBRATOR_SERVICE);
            // Vibrate for 500 milliseconds
            //v.vibrate(500);
            final Vibrator j ;
            j = v;

            long[] pattern = {0, 100, 1000};

            // The '0' here means to repeat indefinitely
            // '0' is actually the index at which the pattern keeps repeating from (the start)
           mic // To repeat the pattern from any other point, you could increase the index, e.g. '1'
            j.vibrate(pattern, 0);

Run Any thing On UI Thread Form Outer Class or Thread

runOnUiThread(new Runnable() {
           @Override
           public void run() {
               Toast.makeText(getApplicationContext(), id, Toast.LENGTH_SHORT).show();
            }

Map

  Map map = new HashMap();

    map.put("name", "John");
    map.put("time", "9648512236521");
    map.put("age", "25");

    long time = Long.valueOf((String)map.get("time")).longValue() ;
    int age = Integer.valueOf((String)  map.get("aget")).intValue();
    System.out.println(time);
    System.out.println(age);

EditText

 EditText Member_id = (EditText)findViewById(R.id.member_id_etx);
 Member_id.getText().toString()

Log

 Log.d("MyActivity", "Alarm Off");

Change Action Title

  Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        String Title= getIntent().getStringExtra("title");
        toolbar.setTitle(Title);
        setSupportActionBar(toolbar);

Toast

 Toast.makeText(getApplicationContext(), "Hello World", Toast.LENGTH_SHORT).show();

Pass Argument between different activitys

Sender Activity

String stringExtra = "Some string you want to pass";

Intent intent = new Intent(this, AndroidTabRestaurantDescSearchListView.class);

//include the string in your intent
intent.putExtra("string", stringExtra);

startActivity(intent)

Recever Activity

//fetch the string  from the intent
String extraFromAct1 = getIntent().getStringExtra("string");

Intent intent = new Intent(this, RatingDescriptionSearchActivity.class);

//attach same string and send it with the intent
intent.putExtra("string", extraFromAct1);
startActivity(intent);

JSON Generator

<?php

    $catId = $_GET['catId'];
    $catId = $_POST['catId'];   

    $conn = mysqli_connect("localhost","root","","DBName");
    if(!$conn)
    {
        trigger_error('Could not Connect' .mysqli_connect_error());
    }

    $sql = "SELECT * FROM TableName";
    $result = mysqli_query($conn, $sql);

    $array = array();

    while($row=mysqli_fetch_assoc($result))
    {
        $array[] = $row;
    }

    echo'{"ProductsData":'.json_encode($array).'}'; //Here ProductsData is just a simple String u can write anything instead
    mysqli_close('$conn');
?>

Call Static from non static

 ((MainActivity) getContext()).refreshFragment(); // Convert Static for non Static

Pause For 1 Second

try {
        Thread.sleep(2000);
        // i=1000;
    } catch (InterruptedException e) {
         e.printStackTrace();
    }

Simple Timer

/**Global Variables*/
Handler handler;
long MillisecondTime, StartTime, TimeBuff, UpdateTime = 0L ;
TextView textView ;

/**On Create*/
handler = new Handler() ;
textView = (TextView)findViewById(R.id.stopWatch);

/** Method OutSide Of oncreate */
private void startTimer() {

        StartTime = SystemClock.uptimeMillis();
        handler.postDelayed(runnable, 0);
    }

private void stopTimer() {
        if(UpdateTime != 0L) {
            MillisecondTime = 0L;
            StartTime = 0L;
            TimeBuff = 0L;
            UpdateTime = 0L;
            Seconds = 0;
            Minutes = 0;
            MilliSeconds = 0;
            handler.removeCallbacks(runnable);
            textView.setText("00:00");
        }
    }

/**Initialize the Timer Thread*/
    public Runnable runnable = new Runnable() {

        public void run() {
            MillisecondTime = SystemClock.uptimeMillis() - StartTime;
            UpdateTime = TimeBuff + MillisecondTime;
            Seconds = (int) (UpdateTime / 1000);
            Minutes = Seconds / 60;
            Seconds = Seconds % 60;
            MilliSeconds = (int) (UpdateTime % 1000);
            
/**Where the Update UI*/
            textView.setText("" + Minutes + ":"
                    + String.format("%02d", Seconds)  /*+ ":"
                   + String.format("%03d", MilliSeconds)*/);
            handler.postDelayed(this, 0);
        }
    };

Handler As Do Any Task After 5sec

    // Splash screen timer
    private static int SPLASH_TIME_OUT = 5000;
    
   new Handler().postDelayed(new Runnable() {

            /*
             * Showing splash screen with a timer. This will be useful when you
             * want to show case your app logo / company
             */

            @Override
            public void run() {
                // This method will be executed once the timer is over
                // Start your app main activity
                Intent i = new Intent(splash.this, LoginActivity.class);
                startActivity(i);

                // close this activity
                finish();
            }
        }, SPLASH_TIME_OUT);

Timer

     new Timer().schedule(new TimerTask() {
                @Override
                public void run() {
                    // this code will be executed after 2 secondst
                    Log.d("Count", "a");
                    client.disconnect_peer();
                    onReject();
                    try {
                        client.sendMessage(remoteCallerId, "Reject", null, false );
                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            incominglinearLayout.setVisibility(View.GONE);
                        }
                    });
                    client.disconnect_peer();
                }
            }, 5000);*/

Different String Format

   tvDay.setText("" + String.format("%02d", days));
   tvHour.setText("" + String.format("%02d", hours));
   tvMinute.setText("" + String.format("%02d", minutes));
   tvSecond.setText("" + String.format("%02d", seconds));

System Curent Date and Time

   TextView tvDisplayDate = (TextView) findViewbyId(R.id.datetv);
   long date = System.currentTimeMillis(); 

   SimpleDateFormat sdf = new SimpleDateFormat("MMM MM dd, yyyy h:mm a");
   String dateString = sdf.format(date);   
   tvDisplayDate.setText(dateString);
Mon Jan 5, 2009 4:55 PM

SharedPreference Demmo For First time visit activity

onCreate(){

Boolean flag;

        SharedPreferences pref;
        pref = getSharedPreferences("testapp", MODE_PRIVATE);


        SharedPreferences.Editor editor = pref .edit();

        flag = pref .getBoolean("flag", false);

        if (flag) {
            /**second time activity*/

            Intent intent = new Intent(this, MainActivity.class);
            startActivity(intent);

        }else{
            /**for first time*/
            editor.putBoolean("flag", true);
            editor.commit();
            Intent intent = new Intent(this, SecondLayoutIntro.class);
            startActivity(intent);
        }

 
}

Relise Activity Memories

 // Here we add Pause mathod to release memory.
    @Override
    protected void onPause() {
        super.onPause();

        finish();//this mathod will release memory of splashActivity .
    }

👍

Links Card View Link http://inducesmile.com/android/android-recyclerview-and-cardview-in-material-design-tutorial/ Recycler Grid View http://inducesmile.com/android/android-gridlayoutmanager-with-recyclerview-in-material-design/ http://stackoverflow.com/questions/21980324/how-to-display-only-one-time-login-and-then-after-start-application-directly-in Sound Cloud App Link http://www.sitepoint.com/develop-music-streaming-android-app/ http://upadhyayjiteshandroid.blogspot.in/2013/01/android-working-with-shared-preferences.html https://google-developer-training.gitbooks.io/android-developer-advanced-course-practicals/content/unit-1-expand-the-user-experience/lesson-2-app-widgets/2-1-p-app-widgets/2-1-p-app-widgets.html