异常信息:
java.lang.RuntimeException: Unable to start activity ComponentInfo{***.MainActivity}:
java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Resources android.content.Context.getResources()' on a null object reference
启动Activity时,context为空。(Activity的context设置有问题)
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.empirecraft.war/com.empirewar.domination.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Resources android.content.Context.getResources()' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2443)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2503)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1353)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5529)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:745)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:635)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Resources android.content.Context.getResources()' on a null object reference
at android.content.ContextWrapper.getResources(ContextWrapper.java:87)
at android.view.ContextThemeWrapper.getResources(ContextThemeWrapper.java:81)
at android.view.Window.getDefaultFeatures(Window.java:1349)
at android.view.Window.<init>(Window.java:480)
at com.android.internal.policy.PhoneWindow.<init>(PhoneWindow.java:305)
at android.app.Activity.attach(Activity.java:6219)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2377)
... 9 more
java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Resources android.content.Context.getResources()' on a null object reference
at android.content.ContextWrapper.getResources(ContextWrapper.java:87)
at android.view.ContextThemeWrapper.getResources(ContextThemeWrapper.java:81)
at android.view.Window.getDefaultFeatures(Window.java:1349)
at android.view.Window.<init>(Window.java:480)
at com.android.internal.policy.PhoneWindow.<init>(PhoneWindow.java:305)
at android.app.Activity.attach(Activity.java:6219)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2377)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2503)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1353)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5529)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:745)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:635)
修复方法:
在Activity中添加super方法调用,设置Activity的context。
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