演示用groovy开发android程序，实现一个ios风格计算器界面（无计算器逻辑）-尊龙凯时

package com.aruis.android.androidhomework1
import android.app.activity
import android.graphics.color
import android.os.bundle
import android.util.displaymetrics
import android.util.typedvalue
import android.view.view
import android.view.viewgroup
import android.widget.linearlayout
import android.widget.linearlayout.layoutparams
import android.widget.textview
public class mainactivity extends activity {
    textview textview;
    list buttoncontents = [
            [e.ac, e.pn, e.per, e.divide],
            [e.seven, e.eight, e.nine, e.multiply],
            [e.four, e.five, e.six, e.minus],
            [e.one, e.two, e.three, e.plus],
            [e.zero, e.point, e.equal]
    ]
    list buttonlist = [];
    long zeros = 1000000000000000
    long zeros00 = zeros * 100
    @override
    protected void oncreate(bundle savedinstancestate) {
        super.oncreate(savedinstancestate);
        this.setcontentview(r.layout.activity_main)
        displaymetrics dm = new displaymetrics()
        getwindowmanager().getdefaultdisplay().getmetrics(dm)
        layoutparams linearlayoutparams = new layoutparams(layoutparams.match_parent, 0, 1)
        layoutparams layoutparams_zero = new layoutparams(0, layoutparams.match_parent, 2)
        layoutparams layoutparams = new layoutparams(0, layoutparams.match_parent, 1)
        textview = findviewbyid(r.id.textview)
        text = '0'
        int i = 0
        buttoncontents.each {
            linearlayout _layout = new linearlayout(this);
            _layout.orientation = linearlayout.horizontal
            _layout.layoutparams = linearlayoutparams
            int j = 0
            it.each { e ->
                mybutton btn = new mybutton(this, e);
                btn.layoutparams = e == e.zero ? layoutparams_zero : layoutparams
                btn.textsize = typedvalue.applydimension(typedvalue.complex_unit_sp, 20, dm)
                if (j == 3 || (i == 4 && j == 2)) {
                    btn.backgroundresource = r.drawable.button_style_right
                    btn.textcolor = color.white
                } else if (i == 0) {
                    btn.backgroundresource = r.drawable.button_style_top
                } else {
                    btn.backgroundresource = r.drawable.button_style
                }
                btn.setonclicklistener(clicklistener)
                buttonlist.add(btn)
                _layout.addview(btn)
                j  
            }
            viewgroup contentparent = (viewgroup) findviewbyid(16908290); //可以取得 activity_main.xml指定的布局
            linearlayout _view = contentparent.getchildat(0)
            _view.addview(_layout)
            i  
        }
    }
    /**
     * 计算功能未实现
     */
    view.onclicklistener clicklistener = new view.onclicklistener() {
        @override
        void onclick(view view) {
            e data = view.data;
            switch (data) {
                case e.ac:
                    text = '0'
                    break
                case e.pn:
                    if (text.indexof('-') == 0)
                        text = text.substring(1)
                    else
                        text = '-'   text
                    break
                case e.per:
                    text = text != '0' ? (text.tofloat() * zeros) / zeros00 : '0'//逻辑尚有bug
                    break
                case e.point:
                    if (text.indexof('.') > -1)
                        break;
                case (e.point..e.nine):
                    if (text == '0' && data.tostring() != '.')
                        text = data.tostring()
                    else
                        text  = data.tostring()
                    break
            }
        }
    }
    def settext(string s) {
        textview.text = s
    }
    string gettext() {
        return textview.text
    }
}