回答編集履歴
2
ボタンアルゴリズムの修正
answer
CHANGED
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@@ -52,11 +52,23 @@
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52
52
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button.setOnClickListener(new View.OnClickListener() {
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53
53
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@Override
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54
54
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public void onClick(View v) {
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55
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+
try {
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55
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-
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56
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+
final int amount = Integer.parseInt(editText.getText().toString());
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56
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-
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57
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+
final int number = (int) spinner.getSelectedItem();
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57
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-
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58
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+
/* 割り勘のアルゴリズムは考えましょう */
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59
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+
if (amount < 0) {
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60
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+
managerTextView.setText("負の数は非対応です");
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61
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+
othersTextView.setText("自然数を入力してください");
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62
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+
} else {
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63
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+
final int others = amount / number / 1000 * 1000;
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64
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+
final int manager = amount - others * (number - 1);
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58
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-
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65
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+
managerTextView.setText(String.valueOf(manager));
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59
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-
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66
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+
othersTextView.setText(String.valueOf(others));
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67
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+
}
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68
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+
} catch (NumberFormatException e) {
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69
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+
managerTextView.setText("parseIntに失敗しました");
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70
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+
othersTextView.setText("自然数を入力してください");
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71
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+
}
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60
72
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}
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61
73
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});
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62
74
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linearLayout.addView(button);
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1
ソースコード修正
answer
CHANGED
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@@ -73,8 +73,9 @@
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73
73
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final Spinner spinner = (Spinner)findViewById(R.id.spinner);
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74
74
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final TextView managerTextView = (TextView) findViewById(R.id.managerTextView);
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75
75
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final TextView othersTextView = (TextView) findViewById(R.id.othersTextView);
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76
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+
final Button button = (Button) findViewById(R.id.button);
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76
77
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77
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-
spinner.setAdapter(new ArrayAdapter<>(this, R.layout.
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78
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+
spinner.setAdapter(new ArrayAdapter<>(this, android.R.layout.simple_dropdown_item_1line, list));
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78
79
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79
80
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button.setOnClickListener(new View.OnClickListener() {
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80
81
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@Override
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