使用FileProvider项目错误

Question

03-21 08:41:05.674 8666-8666/? E/AndroidRuntime: FATAL EXCEPTION: main
                                                 Process: com.example.sty.camertest, PID: 8666
                                                 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.sty.camertest/com.example.sty.camertest.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.XmlResourceParser android.content.pm.ProviderInfo.loadXmlMetaData(android.content.pm.PackageManager, java.lang.String)' on a null object reference
                                                     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2646)
                                                     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
                                                     at android.app.ActivityThread.-wrap12(ActivityThread.java)
                                                     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
                                                     at android.os.Handler.dispatchMessage(Handler.java:102)
                                                     at android.os.Looper.loop(Looper.java:154)
                                                     at android.app.ActivityThread.main(ActivityThread.java:6077)
                                                     at java.lang.reflect.Method.invoke(Native Method)
                                                     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
                                                     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
                                                  Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.XmlResourceParser android.content.pm.ProviderInfo.loadXmlMetaData(android.content.pm.PackageManager, java.lang.String)' on a null object reference
                                                     at android.support.v4.content.FileProvider.parsePathStrategy(FileProvider.java:583)
                                                     at android.support.v4.content.FileProvider.getPathStrategy(FileProvider.java:557)
                                                     at android.support.v4.content.FileProvider.getUriForFile(FileProvider.java:399)
                                                     at com.example.sty.camertest.MainActivity.dispatchTakePictureIntent(MainActivity.java:46)
                                                     at com.example.sty.camertest.MainActivity.onCreate(MainActivity.java:29)
                                                     at android.app.Activity.performCreate(Activity.java:6664)
                                                     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
                                                     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599)
                                                     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
                                                     at android.app.ActivityThread.-wrap12(ActivityThread.java)
                                                     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
                                                     at android.os.Handler.dispatchMessage(Handler.java:102)
                                                     at android.os.Looper.loop(Looper.java:154)
                                                     at android.app.ActivityThread.main(ActivityThread.java:6077)
                                                     at java.lang.reflect.Method.invoke(Native Method)
                                                     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
                                                     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)

Answer 1

看一下是否是xml文件有错误,可能不会报出来