原因：java.lang.ClassNotFoundException 与 MaterialList

Question

我的应用程序运行出现 Caused by: java.lang.ClassNotFoundException: Didn't find class "com.dexafree.materiallistviewexample.view.MaterialListView" 错误。我正在使用这个库 https://github.com/dexafree/MaterialList。这是我的代码。在 post 关于 Github 的问题之前，我想确定我没有做错什么。谢谢！

Fragment1.java:

public class  FragmentTab1 extends ListFragment {

private Context mContext;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {

    View view = inflater.inflate(R.layout.fragmenttab1, null);

    mContext = getActivity();
    MaterialListView mListView = (MaterialListView) view.findViewById(R.id.material_listview);

    SimpleCard card = new SmallImageCard(mContext);
    card.setDescription("Description");
    card.setTitle("Title");
    card.setDrawable(R.drawable.ic_launcher);

    mListView.add(card);

    return view;

}

FragmentTab1.xml:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin">

<com.dexafree.materiallistviewexample.view.MaterialListView
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:id="@+id/material_listview"/>

</RelativeLayout>

build.gradle:

    dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:21.0.3'
    compile ('com.github.dexafree:materiallist:2.0.1') {
        exclude group: 'com.nhaarman.listviewanimations'
    }
}

Answer 1

欢迎使用 Whosebug，更改 FragmentTab1.xml 中的包：

来自 :

com.dexafree.materiallistviewexample.view.MaterialListView

至：

com.dexafree.materiallist.view.MaterialListView

FragmentTab1.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin">

<com.dexafree.materiallist.view.MaterialListView
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:id="@+id/material_listview"/>

</RelativeLayout>

Answer 2

问题 1

检查 1MaterialListView` 的路径。看来你用错了路径。

问题2

将列表视图的 ID 更改为此

android:id="@android:id/list"

或扩展 Fragment 而不是 ListFragment

原因：java.lang.ClassNotFoundException 与 MaterialList

Caused by: java.lang.ClassNotFoundException with MaterialList

java

android

android-fragments