Java 带有ListFragment的简单应用程序;“已经停止”;
我对Android开发和Java编程非常陌生。我试图创建一个带有ListFragment的应用程序(这个应用程序似乎没有必要,但我希望很快将其应用到选项卡式活动中,希望开发一个更大的应用程序),但不幸的是,我的Android设备未能打开该应用程序,并声明它“已停止”不管我读了多少教程,我都无法解决这个问题 这是我的Java 带有ListFragment的简单应用程序;“已经停止”;,java,android,Java,Android,我对Android开发和Java编程非常陌生。我试图创建一个带有ListFragment的应用程序(这个应用程序似乎没有必要,但我希望很快将其应用到选项卡式活动中,希望开发一个更大的应用程序),但不幸的是,我的Android设备未能打开该应用程序,并声明它“已停止”不管我读了多少教程,我都无法解决这个问题 这是我的logcat 09-21 20:34:18.825 4369-4369/com.clickme.list E/AndroidRuntime: FATAL EXCEPTION: main
logcat
09-21 20:34:18.825 4369-4369/com.clickme.list E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.clickme.list/com.clickme.list.MainActivity}: android.view.InflateException: Binary XML file line #9: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2343)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2395)
at android.app.ActivityThread.access$600(ActivityThread.java:162)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1364)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5371)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.view.InflateException: Binary XML file line #9: Error inflating class fragment
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:289)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
at com.clickme.list.MainActivity.onCreate(MainActivity.java:11)
at android.app.Activity.performCreate(Activity.java:5122)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1081)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2307)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2395)
at android.app.ActivityThread.access$600(ActivityThread.java:162)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1364)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5371)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.RuntimeException: Content has view with id attribute 'android.R.id.list' that is not a ListView class
at android.app.ListFragment.ensureList(ListFragment.java:402)
at android.app.ListFragment.onViewCreated(ListFragment.java:203)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:866)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1035)
at android.app.FragmentManagerImpl.addFragment(FragmentManager.java:1137)
at android.app.Activity.onCreateView(Activity.java:4735)
at android.support.v4.app.BaseFragmentActivityApi14.onCreateView(BaseFragmentActivityApi14.java:41)
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:75)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:680)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:289)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
at com.clickme.list.MainActivity.onCreate(MainActivity.java:11)
at android.app.Activity.performCreate(Activity.java:5122)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1081)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2307)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2395)
at android.app.ActivityThread.access$600(ActivityThread.java:162)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1364)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5371)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
at dalvik.system.NativeStart.main(Native Method)
这是我的主要活动.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
<fragment
android:id="@+id/myListFrag"
android:name="com.clickme.list.MyListFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout="@android:layout/simple_list_item_1" />
</LinearLayout>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="@+id/myListView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
这是我的MainActivity.java
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
public class MyListFragment extends ListFragment implements AdapterView.OnItemClickListener {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_my_list, container, false);
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
ArrayAdapter myListAdapter;
myListAdapter = ArrayAdapter.createFromResource(getActivity(), R.array.myList, android.R.layout.simple_list_item_1);
setListAdapter(myListAdapter);
getListView().setOnItemClickListener(this);
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(getActivity(), "Item: " + position, Toast.LENGTH_SHORT).show();
}
}
这是我的MyListFragment.java
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
public class MyListFragment extends ListFragment implements AdapterView.OnItemClickListener {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_my_list, container, false);
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
ArrayAdapter myListAdapter;
myListAdapter = ArrayAdapter.createFromResource(getActivity(), R.array.myList, android.R.layout.simple_list_item_1);
setListAdapter(myListAdapter);
getListView().setOnItemClickListener(this);
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(getActivity(), "Item: " + position, Toast.LENGTH_SHORT).show();
}
}
公共类MyListFragment扩展ListFragment实现AdapterView.OnItemClickListener{
@凌驾
CreateView上的公共视图(布局、充气机、视图组容器、捆绑包保存状态){
返回充气机。充气(R.layout.fragment\u my\u list,container,false);
}
@凌驾
ActivityCreated上的公共无效(@Nullable Bundle savedinStateCState){
super.onActivityCreated(savedInstanceState);
阵列适配器;
myListAdapter=ArrayAdapter.createFromResource(getActivity(),R.array.myList,android.R.layout.simple_list_item_1);
setListAdapter(myListAdapter);
getListView().setOnItemClickListener(此);
}
@凌驾
public void onItemClick(AdapterView父对象、视图、整型位置、长id){
Toast.makeText(getActivity(),“Item:+位置,Toast.LENGTH_SHORT).show();
}
}
谢谢你帮助一个新手。顺便说一下,我导入了
android.app.ListFragment代码>而不是另一个。希望这是清楚的。尝试使用FrameLayout
和SupportFragmentManager
如下:
main_activity.xml:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
<FrameLayout
android:id="@+id/myListFrag"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
它应该可以正常工作。尝试使用FrameLayout
和SupportFragmentManager
如下:
Please check this
MainActivity.java
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
MyListFragment myListFragment = new MyListFragment ();
(MainActivity.this).getSupportFragmentManager().beginTransaction().replace(R.id.main_content, loginFragment).commit();
}
}
main_activity.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:orientation="vertical">
<FrameLayout
android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
public class MyListFragment extends ListFragment implements AdapterView.OnItemClickListener {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView=inflater.inflate(R.layout.fragment_my_list, container, false);
return rootView;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
ArrayAdapter adapter = ArrayAdapter.createFromResource(getActivity(), R.array.myList, android.R.layout.simple_list_item_1);
setListAdapter(adapter);
getListView().setOnItemClickListener(this);
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,long id) {
Toast.makeText(getActivity(), "Item: " + position, Toast.LENGTH_SHORT).show();
}
}
main_activity.xml:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
<FrameLayout
android:id="@+id/myListFrag"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
它应该可以正常工作。请检查此项
Please check this
MainActivity.java
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
MyListFragment myListFragment = new MyListFragment ();
(MainActivity.this).getSupportFragmentManager().beginTransaction().replace(R.id.main_content, loginFragment).commit();
}
}
main_activity.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:orientation="vertical">
<FrameLayout
android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
public class MyListFragment extends ListFragment implements AdapterView.OnItemClickListener {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView=inflater.inflate(R.layout.fragment_my_list, container, false);
return rootView;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
ArrayAdapter adapter = ArrayAdapter.createFromResource(getActivity(), R.array.myList, android.R.layout.simple_list_item_1);
setListAdapter(adapter);
getListView().setOnItemClickListener(this);
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,long id) {
Toast.makeText(getActivity(), "Item: " + position, Toast.LENGTH_SHORT).show();
}
}
MainActivity.java
公共类MainActivity扩展了活动{
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
MyListFragment MyListFragment=新的MyListFragment();
(MainActivity.this).getSupportFragmentManager().beginTransaction().replace(R.id.main_内容,loginFragment).commit();
}
}
main_activity.xml
公共类MyListFragment扩展ListFragment实现AdapterView.OnItemClickListener{
@凌驾
CreateView上的公共视图(布局、充气机、视图组容器、捆绑包保存状态){
视图rootView=充气机。充气(R.layout.fragment\u my\u列表,容器,false);
返回rootView;
}
@凌驾
已创建ActivityState上的公共无效(Bundle savedInstanceState){
super.onActivityCreated(savedInstanceState);
ArrayAdapter=ArrayAdapter.createFromResource(getActivity(),R.array.myList,android.R.layout.simple\u list\u item\u 1);
setListAdapter(适配器);
getListView().setOnItemClickListener(此);
}
@凌驾
public void onItemClick(AdapterView父对象、视图、整型位置、长id){
Toast.makeText(getActivity(),“Item:+位置,Toast.LENGTH_SHORT).show();
}
}
请检查此项
MainActivity.java
公共类MainActivity扩展了活动{
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
MyListFragment MyListFragment=新的MyListFragment();
(MainActivity.this).getSupportFragmentManager().beginTransaction().replace(R.id.main_内容,loginFragment).commit();
}
}
main_activity.xml
公共类MyListFragment扩展ListFragment实现AdapterView.OnItemClickListener{
@凌驾
CreateView上的公共视图(布局、充气机、视图组容器、捆绑包保存状态){
视图rootView=充气机。充气(R.layout.fragment\u my\u列表,容器,false);
返回rootView;
}
@凌驾
已创建ActivityState上的公共无效(Bundle savedInstanceState){
super.onActivityCreated(savedInstanceState);
ArrayAdapter=ArrayAdapter.createFromResource(getActivity(),R.array.myList,android.R.layout.simple\u list\u item\u 1);
setListAdapter(适配器);
getListView().setOnItemClickListener(此);
}
@凌驾
public void onItemClick(AdapterView父对象、视图、整型位置、长id){
Toast.makeText(getActivity(),“Item:+位置,Toast.LENGTH_SHORT).show();
}
}
如果您想使用ListFragment
,您需要遵守该组件的合同。换句话说,您需要使用Android框架已经同意的id,以便片段
能够正确地连接到列表视图
。您应该使用一个特殊的id,请参见以下内容:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="@android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
活动的xml很好,没有问题。试图将xml从片段膨胀为ListFragment
原因:java.lang.RuntimeException:内容具有id属性为“android.R.id.list”的视图,该视图不是ListView类
如果您想使用ListFragment
,您需要遵守该组件的合同。换句话说,您需要使用Android框架已经同意的id,以便片段
能够正确地连接到列表视图
。您应该使用一个特殊的id,请参见以下内容:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="@android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
活动的xml很好,没有问题。试图将xml从片段膨胀为ListFragment
原因:java.lang.RuntimeException:内容具有id属性为“android.R.id.list”的视图,该视图不是ListView类
可能是Hello的副本。我查了你的链接,它