implement uitextfield properties in android

I am an android and iphone developer. I am a newbie though working on this huge project. I am trying to implement the leftView, leftviewmode,rightview,rightviewmode properties of the textfield in iphone in android.

I was thinking that with the leftview and rightview the setC开发者_JAVA百科ompoundDrawables() method could meet the challenge. However, I am stumped as to how to implement the various modes; "Never", "always" etc.

Am I on the right track? Could anyone please help?

Thanks

This code will give you an Android EditText field that functions exactly like an iPhone UITextField with options for clearbuttonmode, leftview, rightview, leftviewmode, rightviewmode, UITextFieldViewModeNever, UITextFieldViewModeWhileEditing, UITextFieldViewModeUnlessEditing, UITextFieldViewModeAlways

    String value = "";//any text you are pre-filling in the EditText
    final String viewMode = "editing";//never | editing | unlessEditing | always
    final String viewSide = "right"; //left | right
    final EditText et = new EditText(this);
    et.setText(value);
    //your leftview, rightview or clearbuttonmode image. for clearbuttonmode this one from standard android images looks pretty good actually
    final Drawable x = getResources().getDrawable(R.drawable.presence_offline);
    x.setBounds(0, 0, x.getIntrinsicWidth(), x.getIntrinsicHeight());
    Drawable x2 = viewMode.equals("never")?null:viewMode.equals("always")?x:viewMode.equals("editing")?(value.equals("") ? null : x):viewMode.equals("unlessEditing")?(value.equals("") ? x : null):null;
    et.setCompoundDrawables(viewSide.equals("left")?x2:null, null, viewSide.equals("right")?x2:null, null);
    et.setOnTouchListener(new OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            if (et.getCompoundDrawables()[viewSide.equals("left")?0:2] == null) {
                return false;
            }
            if (event.getAction() != MotionEvent.ACTION_UP) {
                return false;
            }
            //x pressed
            if ((viewSide.equals("left")&&event.getX() < et.getPaddingLeft() + x.getIntrinsicWidth())
                    ||(viewSide.equals("right")&&event.getX() > et.getWidth() - et.getPaddingRight() - x.getIntrinsicWidth())) {
                Drawable x3 = viewMode.equals("never")?null:viewMode.equals("always")?x:viewMode.equals("editing")?null:viewMode.equals("unlessEditing")?x:null;
                et.setText("");
                et.setCompoundDrawables(viewSide.equals("left")?x3:null, null, viewSide.equals("right")?x3:null, null);
            }          
            return false;
        }
    });
    et.addTextChangedListener(new TextWatcher() {
        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            Drawable x4 = viewMode.equals("never")?null:viewMode.equals("always")?x:viewMode.equals("editing")?(et.getText().toString().equals("") ? null : x):viewMode.equals("unlessEditing")?(et.getText().toString().equals("") ? x : null):null;
           et.setCompoundDrawables(viewSide.equals("left")?x4:null, null, viewSide.equals("right")?x4:null, null);
        }

        @Override
        public void afterTextChanged(Editable arg0) {
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }
    });