TimePicker点击上下方向键 java.lang.NullPointerException异常
16lz
2021-01-25
今天做应用时用到TimePicker控件。
很意外,点击上下选择键,竟然出错了。
<span style="font-size:14px;">02-25 20:06:38.365: E/AndroidRuntime(2990): FATAL EXCEPTION: main02-25 20:06:38.365: E/AndroidRuntime(2990): java.lang.NullPointerException02-25 20:06:38.365: E/AndroidRuntime(2990): at android.widget.TimePicker.updateInputState(TimePicker.java:586)02-25 20:06:38.365: E/AndroidRuntime(2990): at android.widget.TimePicker.access$000(TimePicker.java:60)02-25 20:06:38.365: E/AndroidRuntime(2990): at android.widget.TimePicker$3.onValueChange(TimePicker.java:182)02-25 20:06:38.365: E/AndroidRuntime(2990): at android.widget.NumberPicker.notifyChange(NumberPicker.java:1750)02-25 20:06:38.365: E/AndroidRuntime(2990): at android.widget.NumberPicker.setValueInternal(NumberPicker.java:1536)02-25 20:06:38.365: E/AndroidRuntime(2990): at android.widget.NumberPicker.changeValueByOne(NumberPicker.java:1564)02-25 20:06:38.365: E/AndroidRuntime(2990): at android.widget.NumberPicker.access$200(NumberPicker.java:88)02-25 20:06:38.365: E/AndroidRuntime(2990): at android.widget.NumberPicker$2.onClick(NumberPicker.java:606)02-25 20:06:38.365: E/AndroidRuntime(2990): at android.view.View.performClick(View.java:4147)02-25 20:06:38.365: E/AndroidRuntime(2990): at android.view.View$PerformClick.run(View.java:17161)02-25 20:06:38.365: E/AndroidRuntime(2990): at android.os.Handler.handleCallback(Handler.java:615)02-25 20:06:38.365: E/AndroidRuntime(2990): at android.os.Handler.dispatchMessage(Handler.java:92)02-25 20:06:38.365: E/AndroidRuntime(2990): at android.os.Looper.loop(Looper.java:213)02-25 20:06:38.365: E/AndroidRuntime(2990): at android.app.ActivityThread.main(ActivityThread.java:4787)02-25 20:06:38.365: E/AndroidRuntime(2990): at java.lang.reflect.Method.invokeNative(Native Method)02-25 20:06:38.365: E/AndroidRuntime(2990): at java.lang.reflect.Method.invoke(Method.java:511)02-25 20:06:38.365: E/AndroidRuntime(2990): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)02-25 20:06:38.365: E/AndroidRuntime(2990): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)02-25 20:06:38.365: E/AndroidRuntime(2990): at dalvik.system.NativeStart.main(Native Method)</span>
原来,TimePicker控件里面要加个requeset参数
如下,就可以解决问题了:
<span style="font-size:14px;"> <TimePicker android:id="@+id/arrange_time" android:layout_marginTop="10dp" android:layout_gravity="center_horizontal" android:layout_width="wrap_content" android:layout_height="wrap_content"> <requestFocus/> </TimePicker></span>
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