Letter Sorting on the Right of Android

Import Android. content. context;

Import Android. Graphics. Canvas;

Import Android. Graphics. color;

Import Android. Graphics. paint;

Import Android. Graphics. typeface;

Import Android. util. attributeset;

Import Android. View. motionevent;

Import Android. View. view;

 

Public class rightletterview extends view {

String [] letters = {"A", "B", "C", "D", "E", "F", "g", "H ", "I", "J", "K ",

"L", "M", "n", "O", "P", "Q", "r", "S", "T", "U ", "V", "W", "X ",

"Y", "Z "};

Paint paint = new paint ();

Ontouchingletterchangedlistener;

Boolean showbkg = false;

Int choose =-1;

Int letterslength;

 

Public rightletterview (context ){

Super (context );

}

 

Public rightletterview (context arg0, attributeset arg1, int arg2 ){

Super (arg0, arg1, arg2 );

}

 

Public rightletterview (context, attributeset attrs ){

Super (context, attrs );

}

 

@ Override

Protected void onattachedtowindow (){

// Todo auto-generated method stub

Super. onattachedtowindow ();

Letterslength = letters. length;

}

 

@ Override

Protected void ondraw (canvas ){

Super. ondraw (canvas );

If (showbkg ){

Canvas. drawcolor (color. parsecolor ("#10000000 "));//
Clear and black background

}

 

Int Height = getheight ();

Int width = getwidth ();

Int singleheight = height/letterslength;

 

For (INT I = 0; I <letterslength; I ++ ){

Paint. setcolor (color. Black );

Paint. settypeface (typeface. default_bold );

Paint. setantialias (true );//
Smooth

Paint. settextsize (50366f );

If (I = choose ){

Paint. setcolor (color. parsecolor ("# 3399ff "));

Paint. setfakeboldtext (true );

}

Float xpos = width/2-paint. measuretext (letters [I])/2;

Float ypos = singleheight * (I + 1 );

Canvas. drawtext (letters [I], xpos, ypos, paint );

Paint. Reset ();

}

 

}

 

@ Override

Public Boolean dispatchtouchevent (motionevent event ){

Final int action = event. getaction ();

Final float y = event. Gety ();

Final int oldchoose = choose;

Final ontouchingletterchangedlistener listener = ontouchingletterchangedlistener;

Final int c = (INT) (y/getheight () * letterslength );

 

Switch (Action ){

Case motionevent. action_down:

Showbkg = true;

If (oldchoose! = C & listener! = NULL ){

If (C> 0 & C <= letterslength ){

Listener. ontouchingletterchanged (letters [c]);

Choose = C;

Invalidate ();

}

}

Break;

Case motionevent. action_move:

If (oldchoose! = C & listener! = NULL ){

If (C> 0 & C <= letterslength ){

Listener. ontouchingletterchanged (letters [c]);

Choose = C;

Invalidate ();

}

}

Break;

Case motionevent. action_up:

Showbkg = false;

Choose =-1;

Invalidate ();

Break;

 

Default:

Break;

}

 

Return true;

}

 

@ Override

Public Boolean ontouchevent (motionevent arg0 ){

Return super. ontouchevent (arg0 );

}

 

Public void setontouchingletterchangedlistener (

Ontouchingletterchangedlistener ){

This. ontouchingletterchangedlistener = ontouchingletterchangedlistener;

}

 

Public interface ontouchingletterchangedlistener {

Public void ontouchingletterchanged (string S );

}

 

Public void setletters (string [] letters ){

This. Letters = letters;

}

 

}