我在刚下载下来项目编译时出错，不知道什么原因，能帮帮忙吗？
Android Studio 版本：3.2
build gradle 3.2.0
应该与依赖的butterknife插件有关
classpath 'com.jakewharton:butterknife-gradle-plugin:8.4.0'
Caused by: groovy.lang.MissingPropertyException: Could not get unknown property 'packageForR' for task ':app:processDebugResources' of type com.android.build.gradle.internal.res.LinkApplicationAndroidResourcesTask. at org.gradle.internal.metaobject.AbstractDynamicObject.getMissingProperty(AbstractDynamicObject.java:83) at org.gradle.internal.metaobject.AbstractDynamicObject.getProperty(AbstractDynamicObject.java:61) at com.android.build.gradle.internal.res.LinkApplicationAndroidResourcesTask_Decorated.getProperty(Unknown Source) at org.codehaus.groovy.runtime.InvokerHelper.getProperty(InvokerHelper.java:174) at groovy.lang.Closure.getPropertyTryThese(Closure.java:312) at groovy.lang.Closure.getPropertyDelegateFirst(Closure.java:302) at groovy.lang.Closure.getProperty(Closure.java:287) at org.codehaus.groovy.runtime.callsite.PogoGetPropertySite.getProperty(PogoGetPropertySite.java:50) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGroovyObjectGetProperty(AbstractCallSite.java:307) at butterknife.plugin.ButterKnifePlugin$_apply_closure1$_closure2$_closure3$_closure4.doCall(ButterKnifePlugin.groovy:31) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325) at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:294) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1022) at groovy.lang.Closure.call(Closure.java:414) at groovy.lang.Closure.call(Closure.java:430) at org.gradle.api.internal.AbstractTask$ClosureTaskAction.execute(AbstractTask.java:726) at org.gradle.api.internal.AbstractTask$ClosureTaskAction.execute(AbstractTask.java:699) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:124) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328) at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:113) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:95) ... 108 more

In cn.white.ymc.wanandroidmaster:1.0:1.

• cn.white.ymc.wanandroidmaster.ui.home.HomeActivity has leaked:

• static BaseActivity.!(netEvent)!

• ↳ HomeActivity

• Reference Key: c8d4c552-fe3f-4f6d-b4c7-019d71669e32

• Device: Xiaomi Xiaomi MIX 2 chiron

• Android Version: 8.0.0 API: 26 LeakCanary: 1.6.2 0ebc1fc

• Durations: watch=5669ms, gc=134ms, heap dump=1176ms, analysis=4615ms

• Details:

• Class cn.white.ymc.wanandroidmaster.base.BaseActivity
  | static $classOverhead = byte[4]@317498225 (0x12eca371)
  | static netEvent = cn.white.ymc.wanandroidmaster.ui.home.HomeActivity@317493480 (0x12ec90e8)

• Instance of cn.white.ymc.wanandroidmaster.ui.home.HomeActivity
  | static $classOverhead = byte[4288]@317493817 (0x12ec9239)
  | floatButton = android.support.design.widget.FloatingActionButton@317682920 (0x12ef74e8)
  | fragmentList = java.util.ArrayList@317683536 (0x12ef7750)
  | frameLayout = android.widget.FrameLayout@317683560 (0x12ef7768)
  | lastIndex = 0
  | mExitTime = 0
  | mOnNavigationItemSelectedListener = cn.white.ymc.wanandroidmaster.ui.home.HomeActivity$1@317684208 (0x12ef79f0)
  | navigation = android.support.design.widget.BottomNavigationView@317684224 (0x12ef7a00)
  | toolbarCommon = android.support.v7.widget.Toolbar@317684896 (0x12ef7ca0)
  | activity = cn.white.ymc.wanandroidmaster.ui.home.HomeActivity@317493480 (0x12ec90e8)
  | appDavikActivityUtil = cn.white.ymc.wanandroidmaster.util.davik.AppDavikActivityUtil@317685672 (0x12ef7fa8)
  | bun = cn.white.ymc.wanandroidmaster.ui.home.HomeActivity_ViewBinding@317685680 (0x12ef7fb0)
  | context = cn.white.ymc.wanandroidmaster.base.MyApplication@317620144 (0x12ee7fb0)
  | mDelegate = android.support.v7.app.AppCompatDelegateImplN@317685696 (0x12ef7fc0)
  | mResources = null
  | mThemeId = 2131624234
  | mCreated = true
  | mFragments = android.support.v4.app.FragmentController@317685840 (0x12ef8050)
  | mHandler = android.support.v4.app.FragmentActivity$1@317685856 (0x12ef8060)
  | mLoaderManager = null
  | mNextCandidateRequestIndex = 0
  | mPendingFragmentActivityResults = android.support.v4.util.SparseArrayCompat@317685888 (0x12ef8080)
  | mReallyStopped = false
  | mRequestedPermissionsFromFragment = false
  | mResumed = true
  | mRetaining = false
  | mStopped = false
  | mViewModelStore = null
  | mStartedActivityFromFragment = false
  | mStartedIntentSenderFromFragment = false
  | mExtraDataMap = android.support.v4.util.SimpleArrayMap@317685912 (0x12ef8098)
  | mLifecycleRegistry = android.arch.lifecycle.LifecycleRegistry@317685936 (0x12ef80b0)
  | mActionBar = null
  | mActionModeTypeStarting = 0
  | mActivityInfo = android.content.pm.ActivityInfo@317685968 (0x12ef80d0)
  | mActivityTransitionState = android.app.ActivityTransitionState@317686120 (0x12ef8168)
  | mApplication = cn.white.ymc.wanandroidmaster.base.MyApplication@317620144 (0x12ee7fb0)
  | mAutoFillResetNeeded = false
  | mAutofillManager = null
  | mAutofillPopupWindow = null
  | mCalled = true
  | mChangeCanvasToTranslucent = false
  | mChangingConfigurations = false
  | mComponent = android.content.ComponentName@317686176 (0x12ef81a0)
  | mConfigChangeFlags = 0
  | mCurrentConfig = android.content.res.Configuration@317686192 (0x12ef81b0)
  | mDecor = com.android.internal.policy.DecorView@317456680 (0x12ec0128)
  | mDefaultKeyMode = 0
  | mDefaultKeySsb = null
  | mDestroyed = false
  | mDoReportFullyDrawn = false
  | mEmbeddedID = null
  | mEnableDefaultActionBarUp = false
  | mEnterTransitionListener = android.app.SharedElementCallback$1@1872954312 (0x6fa303c8)
  | mExitTransitionListener = android.app.SharedElementCallback$1@1872954312 (0x6fa303c8)
  | mFinished = false
  | mFragments = android.app.FragmentController@317686312 (0x12ef8228)
  | mHandler = android.os.Handler@317686328 (0x12ef8238)
  | mHasCurrentPermissionsRequest = false
  | mIdent = 247401085
  | mInstanceTracker = android.os.StrictMode$InstanceTracker@317686360 (0x12ef8258)
  | mInstrumentation = android.app.Instrumentation@317686376 (0x12ef8268)
  | mIntent = android.content.Intent@317686448 (0x12ef82b0)
  | mInterceptor = miui.contentcatcher.InterceptorProxy@317511208 (0x12ecd628)
  | mLastAutofillId = 1073741823
  | mLastNonConfigurationInstances = null
  | mMainThread = android.app.ActivityThread@317458968 (0x12ec0a18)
  | mManagedCursors = java.util.ArrayList@317686520 (0x12ef82f8)
  | mManagedDialogs = null
  | mMenuInflater = null
  | mParent = null
  | mReferrer = "cn.white.ymc.wanandroidmaster"
  | mResultCode = 0
  | mResultData = null
  | mResumed = true
  | mSearchEvent = null
  | mSearchManager = null
  | mStartedActivity = false
  | mStopped = false
  | mTaskDescription = android.app.ActivityManager$TaskDescription@317686592 (0x12ef8340)
  | mTemporaryPause = false
  | mTitle = "WanAndroid"
  | mTitleColor = 0
  | mTitleReady = true
  | mToken = android.os.BinderProxy@317682592 (0x12ef73a0)
  | mTranslucentCallback = null
  | mUiThread = java.lang.Thread@1930491856 (0x7310f7d0)
  | mVisibleBehind = false
  | mVisibleFromClient = true
  | mVisibleFromServer = true
  | mVoiceInteractor = null
  | mWindow = com.android.internal.policy.PhoneWindow@317493112 (0x12ec8f78)
  | mWindowAdded = true
  | mWindowManager = android.view.WindowManagerImpl@317682832 (0x12ef7490)
  | mInflater = com.android.internal.policy.PhoneLayoutInflater@317682016 (0x12ef7160)
  | mOverrideConfiguration = null
  | mResources = android.content.res.MiuiResources@317686632 (0x12ef8368)
  | mTheme = android.content.res.Resources$Theme@317686680 (0x12ef8398)
  | mThemeResource = 2131624234
  | mBase = android.app.ContextImpl@317686696 (0x12ef83a8)
  | shadow$klass = cn.white.ymc.wanandroidmaster.ui.home.HomeActivity
  | shadow$monitor = -2000022903

• Excluded Refs:
  | Field: android.os.Message.obj
  | Field: android.os.Message.next
  | Field: android.os.Message.target
  | Field: android.view.inputmethod.InputMethodManager.mNextServedView
  | Field: android.view.inputmethod.InputMethodManager.mServedView
  | Field: android.view.inputmethod.InputMethodManager.mServedInputConnection
  | Field: android.view.inputmethod.InputMethodManager.mCurRootView
  | Field: android.accounts.AccountManager$AmsTask$Response.this$1
  | Field: android.view.accessibility.AccessibilityNodeInfo.mOriginalText
  | Field: com.android.internal.policy.BackdropFrameRenderer.mDecorView
  | Field: android.view.Choreographer$FrameDisplayEventReceiver.mMessageQueue (always)
  | Thread:FinalizerWatchdogDaemon (always)
  | Thread:main (always)
  | Thread:LeakCanary-Heap-Dump (always)
  | Class:java.lang.ref.WeakReference (always)
  | Class:java.lang.ref.SoftReference (always)
  | Class:java.lang.ref.PhantomReference (always)
  | Class:java.lang.ref.Finalizer (always)
  | Class:java.lang.ref.FinalizerReference (always)」
  —————————

请问下model层怎么设计的

感觉都写到了p层里边

Android resource linking failed
C:\Users\jinhu\Desktop\WanAndroidMaster\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:2781: error: resource android:attr/fontVariationSettings not found.
C:\Users\jinhu\Desktop\WanAndroidMaster\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:2781: error: resource android:attr/ttcIndex not found.
error: failed linking references.

应该是缺少了2个资源文件...

请教一个问题： if (!currentFragment.isAdded())
getSupportFragmentManager().beginTransaction().remove(currentFragment).commit();
为什么判断了没有添加过currentFragment，还要去remove(currentFragment)
private void selectFragment(int index) { FragmentTransaction ft = getSupportFragmentManager().beginTransaction(); Fragment currentFragment = fragmentList.get(index); Fragment lastFragment = fragmentList.get(lastIndex);// 上一次显示的Fragment lastIndex = index; ft.hide(lastFragment); if (!currentFragment.isAdded()) { getSupportFragmentManager().beginTransaction().remove(currentFragment).commit(); ft.add(R.id.frame_layout, currentFragment); } ft.show(currentFragment); ft.commitAllowingStateLoss(); }

这个工具好像监听不到实时的网络状态吧！！