Taschenrechner Algorhitmus

1tvResult.setText(Integer.parseInt(operation));

1package de.dani.devandwidgets;
2
3import android.app.Activity;
4import android.os.Bundle;
5import android.view.View;
6import android.widget.Button;
7import android.widget.TextView;
8
9public class MainActivity extends Activity implements View.OnClickListener
10{
11 //Declare Variables
12 Button b1, b2, b3, b4, b5, b6, b7, b8, b9, b0, bDiv, bTim, bMin, bPlu, bEqu, bPt;
13 TextView tvResult;
14 int oldResult, newResult;
15 boolean flgDiv, flgTim, flgMin, flgPlu, flgEqu, flgPt;
16
17 //Called when Activity is first created
18 @Override public void onCreate(Bundle savedInstanceState)
19 {
20 super.onCreate(savedInstanceState);
21 setContentView(R.layout.activity_main);
22 initWidgets();
23 initOCLS();
24 }
25
26 private void initOCLS()
27 {
28 b1.setOnClickListener(this);
29 b2.setOnClickListener(this);
30 b3.setOnClickListener(this);
31 b4.setOnClickListener(this);
32 b5.setOnClickListener(this);
33 b6.setOnClickListener(this);
34 b7.setOnClickListener(this);
35 b8.setOnClickListener(this);
36 b9.setOnClickListener(this);
37 b0.setOnClickListener(this);
38 bDiv.setOnClickListener(this);
39 bTim.setOnClickListener(this);
40 bMin.setOnClickListener(this);
41 bPlu.setOnClickListener(this);
42 bEqu.setOnClickListener(this);
43 bPt.setOnClickListener(this);
44 }
45
46 //Initialize the Widgets
47 private void initWidgets()
48 {
49 b1 = (Button) findViewById(R.id.b1);
50 b2 = (Button) findViewById(R.id.b2);
51 b3 = (Button) findViewById(R.id.b3);
52 b4 = (Button) findViewById(R.id.b4);
53 b5 = (Button) findViewById(R.id.b5);
54 b6 = (Button) findViewById(R.id.b6);
55 b7 = (Button) findViewById(R.id.b7);
56 b8 = (Button) findViewById(R.id.b8);
57 b9 = (Button) findViewById(R.id.b9);
58 b0 = (Button) findViewById(R.id.b0);
59 bDiv = (Button) findViewById(R.id.bDiv);
60 bTim = (Button) findViewById(R.id.bTim);
61 bMin = (Button) findViewById(R.id.bMin);
62 bPlu = (Button) findViewById(R.id.bPlu);
63 bEqu = (Button) findViewById(R.id.bEqu);
64 bPt = (Button) findViewById(R.id.bPt);
65 tvResult = (TextView) findViewById(R.id.tvDisplay);
66 }
67
68 //Called when a Button is pressed
69 public void onClick(View v)
70 {
71 switch(v.getId())
72 {
73 case R.id.b1 :
74 {
75 if (flgDiv)
76 {
77 oldResult
78 }
79 else if (flgTim)
80 {
81
82 }
83
84 else if (flgMin)
85 {
86
87 }
88
89 else if (flgPlu)
90 {
91
92 }
93
94 else if (flgEqu)
95 {
96
97 }
98
99 else if (flgPt)
100 {
101
102 }
103
104 else
105 {
106 if(result != 0)
107 {
108 result = (result * 10) + 1;
109 }
110
111 else
112 {
113 result = 1;
114 }
115 }
116 break;
117 }
118
119 case R.id.b2 :
120 {
121 if(result != 0)
122 {
123 result = (result * 10) + 2;
124 }
125
126 else
127 {
128 result = 2;
129 }
130 break;
131 }
132
133 case R.id.b3 :
134 {
135 if(result != 0)
136 {
137 result = (result * 10) + 3;
138 }
139
140 else
141 {
142 result = 3;
143 }
144 break;
145 }
146
147 case R.id.b4 :
148 {
149 if(result != 0)
150 {
151 result = (result * 10) + 4;
152 }
153
154 else
155 {
156 result = 4;
157 }
158 break;
159 }
160
161 case R.id.b5 :
162 {
163 if(result != 0)
164 {
165 result = (result * 10) + 5;
166 }
167
168 else
169 {
170 result = 5;
171 }
172 break;
173 }
174
175 case R.id.b6 :
176 {
177 if(result != 0)
178 {
179 result = (result * 10) + 6;
180 }
181
182 else
183 {
184 result = 6;
185 }
186 break;
187 }
188
189 case R.id.b7 :
190 {
191 if(result != 0)
192 {
193 result = (result * 10) + 7;
194 }
195
196 else
197 {
198 result = 7;
199 }
200 break;
201 }
202
203 case R.id.b8 :
204 {
205 if(result != 0)
206 {
207 result = (result * 10) + 8;
208 }
209
210 else
211 {
212 result = 8;
213 }
214 break;
215 }
216
217 case R.id.b9 :
218 {
219 if(result != 0)
220 {
221 result = (result * 10) + 9;
222 }
223
224 else
225 {
226 result = 9;
227 }
228 break;
229 }
230
231 case R.id.b0 :
232 {
233 if(result != 0)
234 {
235 result = (result * 10) + 0;
236 }
237
238 else
239 {
240 result = 0;
241 }
242 break;
243 }
244 //Operations
245 case R.id.bDiv :
246 flgDiv = true;
247 break;
248
249 case R.id.bTim :
250 flgTim = true;
251 break;
252
253 case R.id.bMin :
254 flgMin = true;
255 break;
256
257 case R.id.bPlu :
258 flgPlu = true;
259 break;
260
261 case R.id.bEqu :
262 flgEqu = true;
263 break;
264
265 case R.id.bPt :
266 flgPt = true;
267 break;
268 }
269 tvResult.setText(String.valueOf(result));
270 }
271}