安卓計(jì)算器開發(fā)試驗(yàn)報(bào)告

1、上海電力學(xué)院嵌入式WebOS應(yīng)用開發(fā)實(shí)驗(yàn)報(bào)告實(shí)驗(yàn)名稱： 使用An droid Developer SDK開發(fā)應(yīng)用程序?qū)?業(yè)：姓 名：班 級(jí)：學(xué) 號(hào)：作品的運(yùn)行環(huán)境及安卓SDK基礎(chǔ)操作SDK An droid Developer 是一款在windows系統(tǒng)上運(yùn)行的針對(duì)An droid應(yīng)用開發(fā)的谷歌官方軟件（需要 JAVA環(huán)境支持）。1、導(dǎo)入工程2、建立虛擬機(jī)在運(yùn)行虛擬機(jī)是為保證機(jī)器的順暢運(yùn)行建議選擇分辨率較低的虛擬機(jī)，但是其RAM最好設(shè)為512MB因?yàn)椴糠殖绦蛉绻{(diào)用資源過大會(huì)導(dǎo)致虛擬機(jī)無法運(yùn)行。3、虛擬機(jī)界面二、作品介紹我的應(yīng)用是一個(gè)計(jì)算器。能實(shí)現(xiàn)包括小數(shù)的加減乘除運(yùn)算，結(jié)果過大會(huì)自動(dòng)用科學(xué)記

2、數(shù)法表示，另外還有退格跟清屏功能鍵。三、 編程以及運(yùn)行調(diào)試（一）、在MyDesktop主界面中添加應(yīng)用圖標(biāo)1.首先在我的桌面上添加你應(yīng)用的圖標(biāo)以及文字，雙擊圖標(biāo)后就可以看見對(duì)應(yīng)的代碼，可直接在代碼中進(jìn)行修改圖片文字的大小顏色等等Java - MyOesktopAes/layout/activity-iTiiairi.xiTil - ADT 就調(diào) *a(w)/| £££虹七卜；切 Jwk 也 iu；I*itr也”14 :PaletteF3 raphicil Layout S srli詢 i t 0 Nncu Orw 營：B 干 * hloTrtlrEiiair &a

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25、 Suazrulxg aE'Elvlty kmbo.esc.衛(wèi) 1.鶉口口 口itlce 口1Q7M <S246M) |Q= "1.0" en cod ing ="utf-8"?>= " ndroid"an droid:layout_width an droid:layout_height an droid:orie ntatio n="fill_pare nt"= "fill_pare nt"vertical">vTableLayoutan droid:id

26、= "+id/tableLayout1"="match_pare nt"= "wrap_c on te nt"="4">an droid:layout_widthan droid:layout_heightan droid:collapseColu mns vTableRowan droid:id = "+id/tableRow_et"an droid:layout_width="fill_pare nt"an droid:layout_height="fil

27、l_pare nt"><EditTextan droid:id="+id/et"= "fill_pare nt"="fill_pare nt"= "false"an droid:layout_widthan droid:layout_heightan droid:layout_spa nan droid:focusablean droid:gravityan droid:i nputTypean droid:s in gleL ine= "right"= "tex

28、t"= "true" ></ EditText > </ TableRow >vTableRowan droid:id= "+id/tableRow1"= "fill_pare nt"="fill_pare nt"an droid:layout_width an droid:layout_height< Butt onan droid:id="+id/bt_7"an droid:layout width="80px"an droi

29、d:layout height="80px"an droid:text三"7"/>< Butt onan droid:id="+id/bt_8"an droid:layout width="80px"an droid:layout height="80px"an droid:text三"8"/>< Butt onan droid:id="+id/bt_9"an droid:layout_width="1px"an

30、droid:layout height="80px"an droid:text二"9"/>< Butt onan droid:id="+id/bt_back"android:layout width="80px"an droid:layout height="80px"an droid:text="back" /></ TableRow ><TableRowan droid:id ="+id/tableRow2"= &q

31、uot;fill_pare nt"="fill_pare nt"an droid:layout_width an droid:layout_height< Buttonan droid:id="+id/bt_4"an droid:layout width="80px"an droid:layout height="80px"an droid:text="4"/>< Butt onan droid:id="+id/bt_5"an droid:layo

32、ut width="80px"an droid:layout height="80px"an droid:text="5"/>< Butt onan droid:id="+id/bt_6"an droid:layout width="80px"an droid:layout height="80px"an droid:text="6"/>< Butt onan droid:id="+id/bt_divide"an

33、 droid:layout width="80px"android:layout height="80px"an droid:text="/'"/></ TableRow >vTableRowan droid:id ="+id/tableRow3"an droid:layout_width="fill_pare nt"an droid:layout_height="fill_pare nt"< Butt onan droid:id="

34、+id/bt_1"android:layout width="80px"an droid:layout height="80px"an droid:text="1"/>< Butt onan droid:id="+id/bt_2"an droid:layout width="80px"an droid:layout height="80px"an droid:text="2"/>< Buttonan droid:id =&

35、quot;+id/bt_3"an droid:layout width="80px"an droid:layout height="80px"an droid:text="3"/>< Butt onan droid:id="+id/bt_multiply"an droid:layout width="80px"an droid:layout height="80px"an droid:text="*"/></ TableR

36、ow > vTableRowan droid:id ="+id/tableRow4"an droid:layout_width="fill_pare nt"an droid:layout_height="fill_pare nt"< Buttonan droid:id ="+id/bt_0"android:layout width="50px"android:layout height="80px"an droid:text="0"/>&

37、lt; Butt onan droid:id="+id/bt_po in t"android:layout width="50px"an droid:layout height="80px"an droid:text="."/>< Butt onan droid:id="+id/bt_add"an droid:layout width="50px"android:layout height="80px"an droid:text="+

38、"/>< Butt onan droid:id="+id/bt_sub"android:layout width="50px"an droid:layout height="80px"an droid:text="-"/></ TableRow ><TableRowan droid:id="+id/tableRow4"= "fill_pare nt"="fill_pare nt"an droid:layout_

39、width an droid:layout_height< Butt onan droid:id ="+id/bt_equal"an droid:layout_width="fill_pare nt"an droid:layout_height="fill_pare nt"an droid:layout_spa n="3"an droid:text 三"="/>< Butt onan droid:id ="+id/bt_clear"an droid:layo

40、ut width="50px"an droid:layout height="80px"an droid:text ="clear" /></ TableRow ></ TableLayout ></ LinearLayout>（二）、.java功能代碼package weibo.test.ui;import java.util.ArrayList;import java.util.List;import an droid.app.Activity;import an droid.os.Bu

41、ndle;import an droid.view.View;import an droid.view.View. On ClickListe ner;import an droid.widget.Butt on;import an droid.widget.EditText;import an droid.widget.Toast;import weib o.li xiaodaoaaa.ui.R;import an droid.app.Activity;import an droid.c onten t. Intent;import an droid.c on te nt.pm.Packag

42、eMa nager;import an droid.os.Bu ndle;import an droid.view.KeyEve nt;import an droid.view.View;import an droid.view.View. On ClickListe ner;import an droid.widget.Butt on;import android.widget.ListView;import com.zsy.flipper.AppInfUtil;import com.zsy.flipper.AppInfo;public class fffActivity extends A

43、ctivity private Button bt_1; private Button bt_2; private Button bt_3; private Button bt_4; private Button bt_5; private Button bt_6; private Button bt_7; private Button bt_8; private Button bt_9; private Button bt_0;private Button bt_add; private Button bt_sub; / private Button bt_multiply; / priva

44、te Button bt_divide; / private Button bt_back;減乘 除private Button bt_equal; / private Button bt_point; / private Button bt_clear; / private EditText et_play; /嚳丁等于點(diǎn)八、清除顯示private String str_oper = "+" /運(yùn)算符private StringBuffer str_display = new StringBuffer(); / 顯示private String str_result; /

45、 private double num1;private double num2; private boolean flag = true; /結(jié)果顯示小數(shù)點(diǎn)個(gè)數(shù)開關(guān)控制；private boolean b_sub, b_mul, b_div; /運(yùn)算符開關(guān)控制Overridepublic void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState); setContentView(R.layout.activity_fff);bt_0 = (Button) findViewById(R.id.bt_0)

46、; bt_1 = (Button) findViewById(R.id.bt_1); bt_2 = (Button) findViewById(R.id.bt_2);bt_3 = (Button) findViewById(R.id.bt_3); bt_4 = (Button) findViewById(R.id.bt_4);bt_5 = (Button) findViewById(R.id.bt_5); bt_6 = (Button) findViewById(R.id.bt_6);bt_7 = (Button) findViewById(R.id.bt_7); bt_8 = (Button

47、) findViewById(R.id.bt_8);bt_9 = (Button) findViewById(R.id.bt_9); bt_add = (Button) findViewById(R.id.bt_add); bt_sub = (Button) findViewById(R.id.bt_sub); bt_multiply = (Button) findViewById(R.id.bt_multiply); bt_divide = (Button) findViewById(R.id.bt_divide); bt_back = (Button) findViewById(R.id.

48、bt_back); bt_equal = (Button) findViewById(R.id.bt_equal); bt_point = (Button) findViewById(R.id.bt_point); bt_clear = (Button) findViewById(R.id.bt_clear); et_play = (EditText) findViewById(R.id.et);et_play.setText("0");bt_0.setOnClickListener(new OnClickListener()Overridepublic void onCl

49、ick(View v)str_display.append("0"); et_play.setText(str_display.toString(););bt_1.setOnClickListener(new OnClickListener()Overridepublic void onClick(View v)str_display.append("1"); et_play.setText(str_display.toString(););bt_2.setOnClickListener(new OnClickListener()Override pub

50、lic void onClick(View v)str_display.append("2"); et_play.setText(str_display.toString(););bt_3.setOnClickListener(new OnClickListener()Overridepublic void onClick(View v)str_display.append("3"); et_play.setText(str_display.toString(););bt_4.setOnClickListener(new OnClickListener(

51、)Overridepublic void onClick(View v)str_display.append("4"); et_play.setText(str_display.toString(););bt_5.setOnClickListener(new OnClickListener()Overridepublic void onClick(View v)str_display.append("5"); et_play.setText(str_display.toString(););bt_6.setOnClickListener(new OnCl

52、ickListener()Overridepublic void onClick(View v)str_display.append("6");et_play.setText(str_display.toString(););bt_7.setOnClickListener(new OnClickListener()Overridepublic void onClick(View v)str_display.append("7"); et_play.setText(str_display.toString(););bt_8.setOnClickListen

53、er(new OnClickListener()Overridepublic void onClick(View v)str_display.append("8"); et_play.setText(str_display.toString(););bt_9.setOnClickListener(new OnClickListener()Overridepublic void onClick(View v)str_display.append("9"); et_play.setText(str_display.toString(););bt_point.

54、setOnClickListener(new OnClickListener()Overridepublic void onClick(View v)if (flag)str_display.append(".");flag = false;);bt_back.setOnClickListener(new OnClickListener()Overridepublic void onClick(View v)if (str_display.length() != 0)str_display.deleteCharAt(str_display.length() - 1); et

55、_play.setText(str_display.toString(););bt_add.setOnClickListener(new OnClickListener()Overridepublic void onClick(View v)str_oper = "+"if (!(str_display.toString() = "")num1 += Double.parseDouble(str_display.toString();str_display = new StringBuffer("");if (!(str_result

56、 = null)num1 = Double.parseDouble(str_result);str_result = null;et_play.setText(String.valueOf(num1);flag = true;);bt_sub.setOnClickListener(new OnClickListener()Overridepublic void onClick(View v)str_oper = "-"if (!b_sub && !(str_display.toString() = "")num1 = Double.par

57、seDouble(str_display.toString(); et_play.setText(String.valueOf(num1); str_display = new StringBuffer("");b_sub = true; elseif (!(str_display.toString() = "")num1Double.parseDouble(str_display.toString();str_display = new StringBuffer("");if (!(str_result = null)num1 =

58、Double.parseDouble(str_result); str_result = null;et_play.setText(String.valueOf(num1);flag = true;);bt_multiply.setOnClickListener(new OnClickListener()Overridepublic void onClick(View v)str_oper = "*"if (!b_mul && !(str_display.toString() = "")num1 = Double.parseDouble(

59、str_display.toString(); et_play.setText(String.valueOf(num1); str_display = new StringBuffer("");b_mul = true; elseif (!(str_display.toString() = "")num1 Double.parseDouble(str_display.toString();str_display = new StringBuffer("");if (!(str_result = null)num1 = Double.parseDouble(str_result);str_result = null;et_play.setText(String.valueOf(num1);flag = true;);bt_divide.setOnClickListener(new OnClickListener()Overridepublic void onClick(View v)str_oper = "/"if (!b_div &a