一个小项目自定义editText

public class MyEditText extends EditText{
    private Context mContext;
    private Drawable drawable;
    private Drawable bgDrawable;

    public MyEditText(Context context) {
        super(context);
        mContext = context;
        init();
    }

    public MyEditText(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        mContext = context;
        init();
    }

    public MyEditText(Context context, AttributeSet attrs) {
        super(context, attrs);
        mContext = context;
        init();
    }
    private void init(){
        setBackgroundResource(R.drawable.shape_my_edit);
        drawable = mContext.getResources().getDrawable(R.drawable.delete);
        bgDrawable = mContext.getResources().getDrawable(R.drawable.login_ok);
        addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                setDrawable();
            }
            @Override
            public void afterTextChanged(Editable s) {}
        });
    }
    private void setDrawable(){
        if(length() < 1){
            setCompoundDrawablesWithIntrinsicBounds(null,null,null,null);
        }else if(length() == 11){
            setCompoundDrawablesWithIntrinsicBounds(null,null, bgDrawable,null);
        }else{
            setCompoundDrawablesWithIntrinsicBounds(null,null, drawable,null);
        }
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (drawable != null && event.getAction() == MotionEvent.ACTION_UP) {
            int eventX = (int) event.getRawX();
            int eventY = (int) event.getRawY();
            Rect rect = new Rect();
            getGlobalVisibleRect(rect);
            rect.left = rect.right - 50;
            if(rect.contains(eventX, eventY))
                setText("");
        }
        return super.onTouchEvent(event);
    }
}
效果图见附件