android DatePicker / TimePicker 占空间太大的解决办法

android:scaleX="0.8"
android:scaleY="0.8"

        Field[] fields = DatePicker.class.getDeclaredFields();
        //get DatePicker fields
        View[] v_months = null;
        EditText [] v_edits;
        int size = fields.length;
        v_edits = new EditText [size];
        v_months = new View [size];
        for(int i=0;i<size;i++) {
            fields[i].setAccessible(true);
            if(fields[i].getType().getSimpleName().equals("NumberPicker")) {
                try {
                    v_months[i] = (View)fields[i].get(datePicker1);
                    /* change width of the line in the picker */
                    v_months[i].measure(0, 0);  
                    v_months[i].getLayoutParams().width = (int) (v_months[i].getMeasuredWidth() * 0.7f); 
                } catch (Exception e) {
                    Log.e(TAG, e.getMessage());
                }
            }
        }
        for(int i=0;i<size;i++) {
            if(v_months[i] != null) {
                fields = v_months[i].getClass().getDeclaredFields();
                for(Field field : fields) {
                    field.setAccessible(true);
                    if(field.getType().getName().equals(EditText.class.getName())) {
                        try {
                            v_edits[i] = (EditText) field.get(v_months[i]);
                            /* change text size and color of the picker */
                            v_edits[i].setTextSize(5);
                            v_edits[i].setTextColor(getResources().getColor(R.color.holo_blue));
                        } catch (Exception e) {
                            Log.e(TAG, e.getMessage());
                        }
                    }
                }  
            }
        }