在开始活动时遇到崩溃

Question

显示java.lang.NullPointerException                                                                                    在android.text.StaticLayout。（StaticLayout.java:59）                                                                                    在android.support.v7.widget.SwitchCompat.makeLayout（SwitchCompat.java:602）                                                                                    在android.support.v7.widget.SwitchCompat.onMeasure（SwitchCompat.java:522）                                                                                    在android.view.View.measure（View.java:16845）                                                                                    在android.view.ViewGroup.measureChildWithMargins（ViewGroup.java:5374）                                                                                    在android.widget.LinearLayout.measureChildBeforeLayout（LinearLayout.java:1621）                                                                                    在android.widget.LinearLayout.measureHorizo​​ntal（LinearLayout.java:1199）                                                                                    在android.widget.LinearLayout.onMeasure（LinearLayout.java:609）                                                                                    在android.view.View.measure（View.java:16845）                                                                                    在android.widget.RelativeLayout.measureChildHorizo​​ntal（RelativeLayout.java:824）                                                                                    在android.widget.RelativeLayout.onMeasure（RelativeLayout.java:500）                                                                                    在android.view.View.measure（View.java:16845）                                                                                    在android.view.ViewGroup.measureChildWithMargins（ViewGroup.java:5374）                                                                                    在android.widget.FrameLayout.onMeasure（FrameLayout.java:340）                                                                                    在android.view.View.measure（View.java:16845）                                                                                    在android.view.ViewGroup.measureChildWithMargins（ViewGroup.java:5374）                                                                                    在com.android.internal.widget.ActionBarOverlayLayout.onMeasure（ActionBarOverlayLayout.java:327）                                                                                    在android.view.View.measure（View.java:16845）                                                                                    在android.view.ViewGroup.measureChildWithMargins（ViewGroup.java:5374）                                                                                    在android.widget.FrameLayout.onMeasure（FrameLayout.java:340）                                                                                    在com.android.internal.policy.impl.PhoneWindow $ DecorView.onMeasure（PhoneWindow.java:2368）                                                                                    在android.view.View.measure（View.java:16845）                                                                                    在android.view.ViewRootImpl.performMeasure（ViewRootImpl.java:2296）                                                                                    在android.view.ViewRootImpl.measureHierarchy（ViewRootImpl.java:1362）                                                                                    在android.view.ViewRootImpl.performTraversals（ViewRootImpl.java:1559）                                                                                    在android.view.ViewRootImpl.doTraversal（ViewRootImpl.java:1239）                                                                                    在android.view.ViewRootImpl $ TraversalRunnable.run（ViewRootImpl.java:6278）                                                                                    在android.view.Choreographer $ CallbackRecord.run（Choreographer.java:788）                                                                                    在android.view.Choreographer.doCallbacks（Choreographer.java:591）                                                                                    在android.view.Choreographer.doFrame（Choreographer.java:560）                                                                                    在android.view.Choreographer $ FrameDisplayEventReceiver.run（Choreographer.java:774）                                                                                    在android.os.Handler.handleCallback（Handler.java:808）                                                                                    在android.os.Handler.dispatchMessage（Handler.java:103）                                                                                    在android.os.Looper.loop（Looper.java:193）                                                                                    在android.app.ActivityThread.main（ActivityThread.java:5328）                                                                                    at java.lang.reflect.Method.invokeNative（Native Method）                                                                                    在java.lang.reflect.Method.invoke（Method.java:515）                                                                                    在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:838）                                                                                    在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:654）                                                                                    在dalvik.system.NativeStart.main（本地方法）

Answer 1

如果您使用的是SwitchCompat，请使用android：textOn =＆＃34; On＆＃34;和android：textOff =＆＃34;关＆＃34;在xml中。因为textOn和textOff标签为null作为默认值。