1.log信息：提示信息好像说的是布局文件有问题，但是我连setContenView（）里面的文件都给它换过，还是一样的错误信息一点都不会变 Process:com.lcodecore.twinklingrefreshlayout,PID:23703  java.lang.RuntimeException:UnabletostartactivityComponentInfo{com.lcodecore.twinklingrefreshlayout/com.lcodecore.twinklingrefreshlayout.MainActivity}:android.view.InflateException:BinaryXMLfileline#29:BinaryXMLfileline#29:Errorinflatingclass<unknown>    atandroid.app.ActivityThread.performLaunchActivity(ActivityThread.java:3047)2.这里是xml文件<?xmlversion="1.0"encoding="utf-8"?><android.support.design.widget.CoordinatorLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:fitsSystemWindows="true"tools:context=".MainActivity"><android.support.design.widget.AppBarLayoutandroid:layout_height="wrap_content"android:layout_width="match_parent"android:theme="@style/AppTheme.AppBarOverlay"app:elevation="0dp"><android.support.v7.widget.Toolbarandroid:id="@+id/toolbar"android:layout_width="match_parent"android:layout_height="?attr/actionBarSize"android:background="?attr/colorPrimary"/></android.support.design.widget.AppBarLayout><includelayout="@layout/content_main"/><android.support.design.widget.FloatingActionButtonandroid:id="@+id/fab"android:layout_width="36dp"android:layout_height="36dp"android:layout_gravity="bottom|end"android:layout_margin="16dp"android:src="@drawable/ic_create_white_36dp"/></android.support.design.widget.CoordinatorLayout>3.这里是Java文件publicclassMainActivityextendsAppCompatActivityimplementsView.OnClickListener{@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);init();initAcition();}