FATAL EXCEPTION: main
Process: mobiledirectory.com.example.mobiledirectory, PID: 25648
java.lang.RuntimeException: Unable to start activity ComponentInfo{mobiledirectory.com.example.mobiledirectory/mobiledirectory.com.example.mobiledirectory.MainActivity}: java.lang.SecurityException: Permission Denial: opening provider com.android.providers.contacts.ContactsProvider2 from ProcessRecord{4e907b6 25648:mobiledirectory.com.example.mobiledirectory/u0a84} (pid=25648, uid=10084) requires android.permission.READ_CONTACTS or android.permission.WRITE_CONTACTS
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2817)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.
ActivityThread$H.handleMessage(ActivityThread.java:1593)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
Caused by: java.lang.SecurityException: Permission Denial: opening provider com.android.providers.contacts.ContactsProvider2 from ProcessRecord{4e907b6 25648:mobiledirectory.com.example.mobiledirectory/u0a84} (pid=25648, uid=10084) requires android.permission.READ_CONTACTS or android.permission.WRITE_CONTACTS
at android.os.Parcel.readException(Parcel.java:1942)
at android.os.Parcel.readException(Parcel.java:1888)
at android.app.IActivityManager$Stub$Proxy.getContentProvider(IActivityManager.java:4771)
at android.app.ActivityThread.acquireProvider(ActivityThread.java:5882)
at android.app.ContextImpl$ApplicationContentResolver.acquireUnstableProvider(ContextImpl.java:2498)
at android.content.ContentResolver.acquireUnstableProvider(ContentResolver.java:1780)
at android.content.ContentResolver.query(ContentResolver.java:738)
at android.content.ContentResolver.query(ContentResolver.java:704)
at android.content.ContentResolver.query(ContentResolver.java:662)
at mobiledirectory.com.example.mobiledirectory.MainActivity.getPhoneContacts(MainActivity.java:219)
at mobiledirectory.com.example.mobiledirectory.MainActivity.onCreate(MainActivity.java:80)
at android.app.Activity.performCreate(Activity.java:6975)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1213)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2770)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

错误日志都打印出来了，自己不看日志的吗？

日志已经写的很明白了

楼主先试一试在主清单文件把提示的这两个权限加上