没找到课程" support.v4.view.ViewPager" on path:DexPathList [[zip file" /data/app/com.example.prakashgurung.atry-1/base.apk"],nativeLibraryDirectories = [/ data / app / com.example.prakashgurung.atry -1 / lib / arm,/ system / lib,/ vendor / lib]]
这是我的xml文件
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns: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="com.example.prakashgurung.atry.MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="@style/AppTheme.PopupOverlay" />
<android.support.design.widget.TabLayout
android:id="@+id/mtab_ID"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</android.support.design.widget.AppBarLayout>
<include layout="@layout/content_main" />
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="@dimen/fab_margin"
app:srcCompat="@android:drawable/ic_dialog_email" />
<android:support.v4.view.ViewPager
android:id="@+id/mViewpager_ID"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
答案 0 :(得分:0)
找到它。这是一个错字。将private Map<Integer, Person> idMapping;
public Set<Person> getPersonById(int[] ids) {
Objects.requireNonNull(ids);
return IntStream.of(ids)
.filter(idMapping::containsKey)
.mapToObj(idMapping::get)
.collect(Collectors.toSet());
}
更改为<android:support.v4.view.ViewPager
。 (注意<android.support.v4.view.ViewPager
之后的冒号应该是一个点。)