質問編集履歴
1
追記
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File without changes
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body
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@@ -47,4 +47,80 @@
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47
47
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Button:
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text: "Start delay"
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on_press: root.start_delay()
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50
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```
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51
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追記 2018/2/1
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52
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期待した結果が得られたコード
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53
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```Python
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54
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# -*- coding: utf-8 -*
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55
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from kivy.app import App
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56
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from kivy.lang import Builder
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57
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from kivy.uix.boxlayout import BoxLayout
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58
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from kivy.clock import Clock
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59
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Builder.load_string("""
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60
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<MainFrame>:
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61
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orientation: "vertical"
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62
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Label:
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63
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id: info
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64
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text: "not yet"
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65
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Button:
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66
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text: "Start delay"
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67
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on_press: root.start_delay()
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""")
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69
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70
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class MainFrame(BoxLayout):
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71
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72
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def __init__(self, **kwargs):
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73
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super(MainFrame, self).__init__(**kwargs)
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74
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75
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def start_delay(self):
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76
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def callback(dt):
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77
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self.ids["info"].text = "Done"
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78
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Clock.schedule_once(callback, 3)
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79
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80
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81
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class delay_test(App):
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82
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def build(self):
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83
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return MainFrame()
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84
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85
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86
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if __name__ == "__main__":
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87
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delay_test().run()
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88
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```
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89
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上のコードを別のやり方でやろうとしたコード
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90
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結果、エラーで強制終了。
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91
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```Python
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92
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# -*- coding: utf-8 -*
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93
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from kivy.app import App
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94
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from kivy.lang import Builder
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95
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from kivy.uix.boxlayout import BoxLayout
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96
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from kivy.clock import Clock
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97
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Builder.load_string("""
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98
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<MainFrame>:
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99
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orientation: "vertical"
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100
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Label:
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101
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id: info
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102
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text: "not yet"
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103
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Button:
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104
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text: "Start delay"
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105
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on_press: root.start_delay()
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""")
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107
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108
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class MainFrame(BoxLayout):
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109
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110
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def __init__(self, **kwargs):
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111
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super(MainFrame, self).__init__(**kwargs)
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112
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113
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def start_delay(self):
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114
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Clock.schedule_once(self.change_text, 3)
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115
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116
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def change_text(self):
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117
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self.ids["info"].text = "Done"
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118
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119
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class delay_test(App):
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120
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def build(self):
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121
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return MainFrame()
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122
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123
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124
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if __name__ == "__main__":
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125
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delay_test().run()
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50
126
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```
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