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POHow to move multiple Views in Android?
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copied!<p>i'm having some problems with views. I created my own View (Square) and i want to move any Squares that i put on the screen. With the menu, i can put other Squares on the screen. The thing is, that when the program starts, i have one square on the screen and i can move it. But when i put other squares, i can just move the last one. How can i fix this? </p> <pre><code>public class Square extends View { private float x, y, width, height; private int screenW, screenH; public boolean isInside = false; public int id=0; public Square(Context context, int aid, int asw, int ash, float aw, float ah) { super(context); id = aid; screenH = ash; screenW = asw; x = asw/2; y = ash/2; width = aw; height = ah; } protected void onDraw(Canvas canvas){ Paint paint = new Paint(); paint.setColor(Color.BLACK); canvas.drawLine(x, y, x+width, y, paint); canvas.drawLine(x, y, x, y+height, paint); canvas.drawLine(x+width, y+height, x+width, y, paint); canvas.drawLine(x+width, y+height, x, y+height, paint); } public void setPosition(float x, float y){ this.x = x-width/2; this.y = y-height/2; //invalidate(); } public int contains(float ax, float ay){ if(ax==x || (ax<(x+width) && ax > x) || ax==(x+width)) if(ay==y || (ay<(y+height) && ay > y) || ay==(y+height)) return id; return -1; } </code></pre> <p>}</p> <pre><code>public class SquareBuilder extends Activity { private int width, height; //private RelativeLayout layout; private FrameLayout layout; private int id=0; private ArrayList<Square> squareList; Square squareTouched; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_square_builder); Display display = null; display = getWindowManager().getDefaultDisplay(); DisplayMetrics outMetrics = new DisplayMetrics(); display.getMetrics(outMetrics); width = outMetrics.widthPixels; height = outMetrics.heightPixels; Log.i("Display size", "Width: "+width+" Height: "+height); Log.i("Display size", "Width: "+width/2+" Height: "+height/2); //layout = new RelativeLayout(this); layout = new FrameLayout(this); squareList = new ArrayList<Square>(); Square sqr = new Square(this, id++, (int) width, (int)height,50,50); sqr.setOnTouchListener(new View.OnTouchListener() { public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub Square sqr = (Square) v; switch(event.getAction()){ case MotionEvent.ACTION_DOWN: if(sqr.contains(event.getX(),event.getY())>=0) sqr.isInside = true; break; case MotionEvent.ACTION_MOVE: if(sqr.isInside) sqr.setPosition(event.getX(),event.getY()); break; case MotionEvent.ACTION_UP: sqr.isInside = false; break; } sqr.invalidate(); //return super.onTouchEvent(event); return true; //return false; } }); squareTouched = null; squareList.add(sqr); layout.addView(sqr); setContentView(layout); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_square_builder, menu); return true; } public boolean onOptionsItemSelected(MenuItem item){ switch(item.getItemId()){ case R.id.menu_other: Square sqr = new Square(this, id++, (int) width, (int) height,50,50); sqr.setOnTouchListener(new View.OnTouchListener() { public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub Square sqr = (Square) v; switch(event.getAction()){ case MotionEvent.ACTION_DOWN: if(sqr.contains(event.getX(),event.getY())>=0) sqr.isInside = true; break; case MotionEvent.ACTION_MOVE: if(sqr.isInside) sqr.setPosition(event.getX(),event.getY()); break; case MotionEvent.ACTION_UP: sqr.isInside = false; break; } sqr.invalidate(); //return super.onTouchEvent(event); return true; //return false; } }); squareList.add(sqr); layout.addView(sqr); setContentView(layout); break; } return super.onOptionsItemSelected(item); } </code></pre> <p>}</p>

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