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1 | package de.pointedears.converter.app; |
1 | package de.pointedears.converter.app; |
2 | 2 | ||
3 | import java.util.HashMap; |
3 | import java.util.HashMap; |
4 | 4 | ||
5 | import android.app.Activity; |
5 | import android.app.Activity; |
6 | import android.os.Bundle; |
6 | import android.os.Bundle; |
7 | import android.text.Editable; |
7 | import android.text.Editable; |
8 | import android.view.KeyEvent; |
8 | import android.view.KeyEvent; |
9 | import android.view.Menu; |
9 | import android.view.Menu; |
10 | import android.view.MenuInflater; |
10 | import android.view.MenuInflater; |
11 | import android.view.MenuItem; |
11 | import android.view.MenuItem; |
12 | import android.view.View; |
12 | import android.view.View; |
- | 13 | import android.view.View.OnClickListener; |
|
13 | import android.view.View.OnKeyListener; |
14 | import android.view.View.OnKeyListener; |
14 | import android.widget.AdapterView; |
15 | import android.widget.AdapterView; |
15 | import android.widget.AdapterView.OnItemSelectedListener; |
16 | import android.widget.AdapterView.OnItemSelectedListener; |
- | 17 | import android.widget.Button; |
|
16 | import android.widget.EditText; |
18 | import android.widget.EditText; |
17 | import android.widget.Spinner; |
19 | import android.widget.Spinner; |
18 | import de.pointedears.converter.R; |
20 | import de.pointedears.converter.R; |
19 | import de.pointedears.converter.db.CurrenciesDatabase; |
21 | import de.pointedears.converter.db.CurrenciesDatabase; |
20 | 22 | ||
21 | /**
|
23 | /**
|
22 | * Activity that implements currency conversion
|
24 | * Activity that implements currency conversion
|
23 | *
|
25 | *
|
24 | * @author pelinux
|
26 | * @author pelinux
|
25 | */
|
27 | */
|
26 | public class CurrenciesActivity extends Activity |
28 | public class CurrenciesActivity extends Activity |
27 | {
|
29 | {
|
28 | /*
|
30 | /*
|
29 | * Constants for mapping value strings
|
31 | * Constants for mapping value strings
|
30 | *
|
32 | *
|
31 | * @todo: Use resource IDs
|
33 | * @todo: Use resource IDs
|
32 | */
|
34 | */
|
33 | /**
|
35 | /**
|
34 | * Database field/spinner value for Swiss Francs
|
36 | * Database field/spinner value for Swiss Francs
|
35 | */
|
37 | */
|
36 | public static final String VALUE_CHF = "CHF"; //$NON-NLS-1$ |
38 | public static final String VALUE_CHF = "CHF"; //$NON-NLS-1$ |
37 | 39 | ||
38 | /**
|
40 | /**
|
39 | * Database field/spinner value for Euros
|
41 | * Database field/spinner value for Euros
|
40 | */
|
42 | */
|
41 | 43 | ||
42 | public static final String VALUE_EUR = "EUR"; //$NON-NLS-1$ |
44 | public static final String VALUE_EUR = "EUR"; //$NON-NLS-1$ |
43 | 45 | ||
44 | /**
|
46 | /**
|
45 | * Database field/spinner value for US Dollars
|
47 | * Database field/spinner value for US Dollars
|
46 | */
|
48 | */
|
47 | public static final String VALUE_USD = "USD"; //$NON-NLS-1$ |
49 | public static final String VALUE_USD = "USD"; //$NON-NLS-1$ |
48 | 50 | ||
49 | /* Unit spinners (dropdowns) */
|
51 | /* Unit spinners (dropdowns) */
|
50 | private Spinner spinnerUnit1; |
52 | private Spinner spinnerUnit1; |
51 | private Spinner spinnerUnit2; |
53 | private Spinner spinnerUnit2; |
52 | private CurrenciesDatabase db; |
54 | private CurrenciesDatabase db; |
53 | 55 | ||
54 | private HashMap<String, HashMap<String, Double>> conversionRates; |
56 | private HashMap<String, HashMap<String, Double>> conversionRates; |
55 | 57 | ||
56 | /** Called when the activity is first created. */
|
58 | /** Called when the activity is first created. */
|
57 | 59 | ||
58 | @Override |
60 | @Override |
59 | public void onCreate(Bundle savedInstanceState) |
61 | public void onCreate(Bundle savedInstanceState) |
60 | {
|
62 | {
|
61 | super.onCreate(savedInstanceState); |
63 | super.onCreate(savedInstanceState); |
62 | this.setContentView(R.layout.activity_currencies); |
64 | this.setContentView(R.layout.activity_currencies); |
63 | 65 | ||
64 | /* Set up currency database, and retrieve conversion rates */
|
66 | /* Set up currency database, and retrieve conversion rates */
|
65 | this.db = new CurrenciesDatabase(this); |
67 | this.db = new CurrenciesDatabase(this); |
66 | this.conversionRates = this.db.getConversionRates(); |
68 | this.conversionRates = this.db.getConversionRates(); |
67 | 69 | ||
68 | final EditText editValue1 =
|
70 | final EditText editValue1 =
|
69 | (EditText) this.findViewById(R.id.currencies_edit_value1); |
71 | (EditText) this.findViewById(R.id.currencies_edit_value1); |
70 | final EditText editValue2 =
|
72 | final EditText editValue2 =
|
71 | (EditText) this.findViewById(R.id.currencies_edit_value2); |
73 | (EditText) this.findViewById(R.id.currencies_edit_value2); |
72 | 74 | ||
73 | final OnKeyListener editValue1OnKey = new OnKeyListener() { |
75 | final OnKeyListener editValue1OnKey = new OnKeyListener() { |
74 | @Override |
76 | @Override |
75 | public boolean onKey(View v, int keyCode, KeyEvent event) |
77 | public boolean onKey(View v, int keyCode, KeyEvent event) |
76 | {
|
78 | {
|
77 | Editable editable1 = ((EditText) v).getText(); |
79 | Editable editable1 = ((EditText) v).getText(); |
78 | 80 | ||
79 | Double value1; |
81 | Double value1; |
80 | try
|
82 | try
|
81 | {
|
83 | {
|
82 | value1 = Double.parseDouble(editable1.toString()); |
84 | value1 = Double.parseDouble(editable1.toString()); |
83 | }
|
85 | }
|
84 | catch (NumberFormatException e) |
86 | catch (NumberFormatException e) |
85 | {
|
87 | {
|
86 | value1 = null; |
88 | value1 = null; |
87 | }
|
89 | }
|
88 | 90 | ||
89 | String string2 = ""; //$NON-NLS-1$ |
91 | String string2 = ""; //$NON-NLS-1$ |
90 | if (value1 != null) |
92 | if (value1 != null) |
91 | {
|
93 | {
|
92 | string2 = CurrenciesActivity.this.getConvertedValue(value1, false); |
94 | string2 = CurrenciesActivity.this.getConvertedValue(value1, false); |
93 | }
|
95 | }
|
94 | 96 | ||
95 | editValue2.setText(string2); |
97 | editValue2.setText(string2); |
96 | 98 | ||
97 | return false; |
99 | return false; |
98 | }
|
100 | }
|
99 | }; |
101 | }; |
100 | editValue1.setOnKeyListener(editValue1OnKey); |
102 | editValue1.setOnKeyListener(editValue1OnKey); |
101 | 103 | ||
102 | final OnKeyListener editValue2OnKey = new OnKeyListener() { |
104 | final OnKeyListener editValue2OnKey = new OnKeyListener() { |
103 | @Override |
105 | @Override |
104 | public boolean onKey(View v, int keyCode, KeyEvent event) |
106 | public boolean onKey(View v, int keyCode, KeyEvent event) |
105 | {
|
107 | {
|
106 | Editable editable2 = ((EditText) v).getText(); |
108 | Editable editable2 = ((EditText) v).getText(); |
107 | 109 | ||
108 | Double value2; |
110 | Double value2; |
109 | try
|
111 | try
|
110 | {
|
112 | {
|
111 | value2 = Double.parseDouble(editable2.toString()); |
113 | value2 = Double.parseDouble(editable2.toString()); |
112 | }
|
114 | }
|
113 | catch (NumberFormatException e) |
115 | catch (NumberFormatException e) |
114 | {
|
116 | {
|
115 | value2 = null; |
117 | value2 = null; |
116 | }
|
118 | }
|
117 | 119 | ||
118 | String string1 = ""; //$NON-NLS-1$ |
120 | String string1 = ""; //$NON-NLS-1$ |
119 | if (value2 != null) |
121 | if (value2 != null) |
120 | {
|
122 | {
|
121 | string1 = CurrenciesActivity.this.getConvertedValue(value2, true); |
123 | string1 = CurrenciesActivity.this.getConvertedValue(value2, true); |
122 | }
|
124 | }
|
123 | 125 | ||
124 | editValue1.setText(string1); |
126 | editValue1.setText(string1); |
125 | 127 | ||
126 | return false; |
128 | return false; |
127 | }
|
129 | }
|
128 | }; |
130 | }; |
129 | editValue2.setOnKeyListener(editValue2OnKey); |
131 | editValue2.setOnKeyListener(editValue2OnKey); |
130 | 132 | ||
131 | this.spinnerUnit1 = |
133 | this.spinnerUnit1 = |
132 | (Spinner) this.findViewById(R.id.currencies_spinner_unit1); |
134 | (Spinner) this.findViewById(R.id.currencies_spinner_unit1); |
133 | this.spinnerUnit2 = |
135 | this.spinnerUnit2 = |
134 | (Spinner) this.findViewById(R.id.currencies_spinner_unit2); |
136 | (Spinner) this.findViewById(R.id.currencies_spinner_unit2); |
135 | 137 | ||
136 | this.spinnerUnit1.setOnItemSelectedListener(new OnItemSelectedListener() { |
138 | this.spinnerUnit1.setOnItemSelectedListener(new OnItemSelectedListener() { |
137 | @Override |
139 | @Override |
138 | public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, |
140 | public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, |
139 | long arg3) |
141 | long arg3) |
140 | {
|
142 | {
|
141 | /* Simulate input in second EditText so that first EditText is updated */
|
143 | /* Simulate input in second EditText so that first EditText is updated */
|
142 | editValue2OnKey.onKey(editValue2, 0, null); |
144 | editValue2OnKey.onKey(editValue2, 0, null); |
143 | }
|
145 | }
|
144 | 146 | ||
145 | @Override |
147 | @Override |
146 | public void onNothingSelected(AdapterView<?> arg0) |
148 | public void onNothingSelected(AdapterView<?> arg0) |
147 | {
|
149 | {
|
148 | /* no-op */
|
150 | /* no-op */
|
149 | }
|
151 | }
|
150 | }); |
152 | }); |
151 | 153 | ||
152 | this.spinnerUnit2.setSelection(1); |
154 | this.spinnerUnit2.setSelection(1); |
153 | this.spinnerUnit2.setOnItemSelectedListener(new OnItemSelectedListener() { |
155 | this.spinnerUnit2.setOnItemSelectedListener(new OnItemSelectedListener() { |
154 | @Override |
156 | @Override |
155 | public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, |
157 | public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, |
156 | long arg3) |
158 | long arg3) |
157 | {
|
159 | {
|
158 | /* Simulate input in first EditText so that second EditText is updated */
|
160 | /* Simulate input in first EditText so that second EditText is updated */
|
159 | editValue1OnKey.onKey(editValue1, 0, null); |
161 | editValue1OnKey.onKey(editValue1, 0, null); |
160 | }
|
162 | }
|
161 | 163 | ||
162 | @Override |
164 | @Override |
163 | public void onNothingSelected(AdapterView<?> arg0) |
165 | public void onNothingSelected(AdapterView<?> arg0) |
164 | {
|
166 | {
|
165 | /* no-op */
|
167 | /* no-op */
|
166 | }
|
168 | }
|
- | 169 | }); |
|
- | 170 | ||
- | 171 | Button buttonClear = |
|
- | 172 | (Button) this.findViewById(R.id.currencies_button_clear); |
|
- | 173 | buttonClear.setOnClickListener(new OnClickListener() { |
|
- | 174 | ||
- | 175 | @SuppressWarnings("nls") |
|
- | 176 | @Override |
|
- | 177 | public void onClick(View v) |
|
- | 178 | {
|
|
- | 179 | editValue1.setText(""); |
|
- | 180 | editValue2.setText(""); |
|
- | 181 | }
|
|
167 | }); |
182 | }); |
168 | }
|
183 | }
|
169 | 184 | ||
170 | /**
|
185 | /**
|
171 | * @param value
|
186 | * @param value
|
172 | * @return
|
187 | * @return
|
173 | */
|
188 | */
|
174 | private String getConvertedValue(double value, boolean reverse) |
189 | private String getConvertedValue(double value, boolean reverse) |
175 | {
|
190 | {
|
176 | int selectedItemPosition1 = this.spinnerUnit1.getSelectedItemPosition(); |
191 | int selectedItemPosition1 = this.spinnerUnit1.getSelectedItemPosition(); |
177 | int selectedItemPosition2 = this.spinnerUnit2.getSelectedItemPosition(); |
192 | int selectedItemPosition2 = this.spinnerUnit2.getSelectedItemPosition(); |
178 | String[] items = |
193 | String[] items = |
179 | this.getResources().getStringArray(R.array.currency_units_values); |
194 | this.getResources().getStringArray(R.array.currency_units_values); |
180 | String selectedItemValue1 = items[selectedItemPosition1]; |
195 | String selectedItemValue1 = items[selectedItemPosition1]; |
181 | String selectedItemValue2 = items[selectedItemPosition2]; |
196 | String selectedItemValue2 = items[selectedItemPosition2]; |
182 | 197 | ||
183 | if (reverse) |
198 | if (reverse) |
184 | {
|
199 | {
|
185 | String tmp = selectedItemValue1; |
200 | String tmp = selectedItemValue1; |
186 | selectedItemValue1 = selectedItemValue2;
|
201 | selectedItemValue1 = selectedItemValue2;
|
187 | selectedItemValue2 = tmp;
|
202 | selectedItemValue2 = tmp;
|
188 | }
|
203 | }
|
189 | 204 | ||
190 | Double newValue = value; |
205 | Double newValue = value; |
191 | 206 | ||
192 | HashMap<String, Double> mapForCurrency = |
207 | HashMap<String, Double> mapForCurrency = |
193 | this.conversionRates.get(selectedItemValue1); |
208 | this.conversionRates.get(selectedItemValue1); |
194 | if (mapForCurrency != null) |
209 | if (mapForCurrency != null) |
195 | {
|
210 | {
|
196 | Double conversionFactor = mapForCurrency.get(selectedItemValue2); |
211 | Double conversionFactor = mapForCurrency.get(selectedItemValue2); |
197 | if (conversionFactor != null) |
212 | if (conversionFactor != null) |
198 | {
|
213 | {
|
199 | newValue *= conversionFactor; |
214 | newValue *= conversionFactor; |
200 | }
|
215 | }
|
201 | }
|
216 | }
|
202 | 217 | ||
203 | return newValue.toString(); |
218 | return newValue.toString(); |
204 | }
|
219 | }
|
205 | 220 | ||
206 | /*
|
221 | /*
|
207 | * (non-Javadoc)
|
222 | * (non-Javadoc)
|
208 | *
|
223 | *
|
209 | * @see android.app.Activity#onCreateOptionsMenu(android.view.Menu)
|
224 | * @see android.app.Activity#onCreateOptionsMenu(android.view.Menu)
|
210 | */
|
225 | */
|
211 | /*
|
226 | /*
|
212 | * (non-Javadoc)
|
227 | * (non-Javadoc)
|
213 | *
|
228 | *
|
214 | * @see android.app.Activity#onCreateOptionsMenu(android.view.Menu)
|
229 | * @see android.app.Activity#onCreateOptionsMenu(android.view.Menu)
|
215 | */
|
230 | */
|
216 | @Override |
231 | @Override |
217 | public boolean onCreateOptionsMenu(Menu menu) |
232 | public boolean onCreateOptionsMenu(Menu menu) |
218 | {
|
233 | {
|
219 | MenuInflater inflater = this.getMenuInflater(); |
234 | MenuInflater inflater = this.getMenuInflater(); |
220 | inflater.inflate(R.menu.options, menu); |
235 | inflater.inflate(R.menu.options, menu); |
221 | return true; |
236 | return true; |
222 | }
|
237 | }
|
223 | 238 | ||
224 | /*
|
239 | /*
|
225 | * (non-Javadoc)
|
240 | * (non-Javadoc)
|
226 | *
|
241 | *
|
227 | * @see android.app.Activity#onOptionsItemSelected(android.view.MenuItem)
|
242 | * @see android.app.Activity#onOptionsItemSelected(android.view.MenuItem)
|
228 | */
|
243 | */
|
229 | /*
|
244 | /*
|
230 | * (non-Javadoc)
|
245 | * (non-Javadoc)
|
231 | *
|
246 | *
|
232 | * @see android.app.Activity#onOptionsItemSelected(android.view.MenuItem)
|
247 | * @see android.app.Activity#onOptionsItemSelected(android.view.MenuItem)
|
233 | */
|
248 | */
|
234 | @Override |
249 | @Override |
235 | public boolean onOptionsItemSelected(MenuItem item) |
250 | public boolean onOptionsItemSelected(MenuItem item) |
236 | {
|
251 | {
|
237 | /* update here */
|
252 | /* update here */
|
238 | return super.onOptionsItemSelected(item); |
253 | return super.onOptionsItemSelected(item); |
239 | }
|
254 | }
|
240 | }
|
255 | }
|
241 | 256 |