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分享安卓fragment问题 初学者求大神指点
11-22 21:24:59.490: E/AndroidRuntime(1427): java.lang.RuntimeException: Unable to start activity ComponentInf{com.example.again3/com.example.again3.MainActivity}: android.view.InflateException: Binary XML file line #6: Error inflating class fragment
代码如下，主要就是想实现横屏时俩个frament显示在屏幕上一个是列表，另一个是选择的详细信息，竖屏时显示列表选择后跳转到详细信息Activity
package com.example.again3;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.support.v4.app.FragmentTransaction;
public class ListFragment extends android.app.ListFragment{
boolean dualPane;
int curCheckPosition = 0;
public void onActivityCreated(Bundle savedInstanceState)
{
super.onActivityCreated(savedInstanceState);
setListAdapter(new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_checked,Data.TITLES));
View detailFrame = getActivity().findViewById(R.id.detail);
dualPane = detailFrame!=null&&detailFrame.getVisibility()==View.VISIBLE;
if(savedInstanceState!=null)
{
curCheckPosition = savedInstanceState.getInt("curChoice",0);
}
if(dualPane)
{
getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
showDetails(curCheckPosition);
}
}
public void onSaveInstanceState(Bundle outState)
{
super.onSaveInstanceState(outState);
outState.putInt("curChoice", curCheckPosition);
}
public void onListItemClick(ListView l,View v,int positon,long id)
{
showDetails(positon);
}
void showDetails(int index)
{
curCheckPosition = index;
if(dualPane)
{
getListView().setItemChecked(index, true);
DetailFragment details = (DetailFragment)getFragmentManager()
.findFragmentById(R.id.detail);
if(details==null||details.getShownIndex()!=index)
{
android.app.FragmentTransaction ft = getFragmentManager()
.beginTransaction();
ft.replace(R.id.detail, details);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();
}
}else
{
Intent intent = new Intent(getActivity(),MainActivity.DetailActivity.class);
intent.putExtra("index", index);
startActivity(intent);
}
}
}
package com.example.again3;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
public class MainActivity extends FragmentActivity {
public static class DetailActivity extends FragmentActivity
{
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if(getResources().getConfiguration().orientation==Configuration.ORIENTATION_LANDSCAPE)
{
finish();
return;
}
if(savedInstanceState==null)
{
DetailFragment details = new DetailFragment();
details.setArguments(getIntent().getExtras());
getFragmentManager().beginTransaction().add(android.R.id.content, details).commit();
}
}
}
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
}
package com.example.again3;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ScrollView;
import android.widget.TextView;
public class DetailFragment extends Fragment{
public static DetailFragment newInstance(int index)
{
DetailFragment f =new DetailFragment();
Bundle bundle = new Bundle();
bundle.putInt("index", index);
f.setArguments(bundle);
return f;
}
public int getShownIndex()
{
return getArguments().getInt("index",0);
}
public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState)
{
if(container == null)
{
return null;
}
ScrollView scroller = new ScrollView(getActivity());
TextView text = new TextView(getActivity());
text.setPadding(10,10,10,10);
scroller.addView(text);
text.setText(Data.DETAL[getShownIndex()]);
return scroller;
}
}
package com.example.again3;
public final class Data {
public static final String [] TITLES=
{
"线性布局",
"表格布局",
"帧布局",
"相对布局"
};
public static final String [] DETAL =
{
"我就是线性布局"+
"我就是表格布局",
"我就是帧布局",
"我就是相对布局"
};
}
res/layout/main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<fragment class = "com.mingrisoft.ListFragment"
android:id="@+id/titles"
android:layout_height="match_parent"
android:layout_weight="1"
android:layout_width="0px"/>
</LinearLayout>
res/layout-land/main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<fragment class = "com.mingrisoft.ListFragment"
android:id="@+id/titles"
android:layout_height="match_parent"
android:layout_weight="1"
android:layout_width="0px"/>
<FrameLayout
android:id="@+id/detail"
android:layout_width="0px"
android:layout_weight="2"
android:layout_height="match_parent"
android:background="?android:attr/detailsElementBackground"/>
</LinearLayout>
代码如下，主要就是想实现横屏时俩个frament显示在屏幕上一个是列表，另一个是选择的详细信息，竖屏时显示列表选择后跳转到详细信息Activity
package com.example.again3;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.support.v4.app.FragmentTransaction;
public class ListFragment extends android.app.ListFragment{
boolean dualPane;
int curCheckPosition = 0;
public void onActivityCreated(Bundle savedInstanceState)
{
super.onActivityCreated(savedInstanceState);
setListAdapter(new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_checked,Data.TITLES));
View detailFrame = getActivity().findViewById(R.id.detail);
dualPane = detailFrame!=null&&detailFrame.getVisibility()==View.VISIBLE;
if(savedInstanceState!=null)
{
curCheckPosition = savedInstanceState.getInt("curChoice",0);
}
if(dualPane)
{
getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
showDetails(curCheckPosition);
}
}
public void onSaveInstanceState(Bundle outState)
{
super.onSaveInstanceState(outState);
outState.putInt("curChoice", curCheckPosition);
}
public void onListItemClick(ListView l,View v,int positon,long id)
{
showDetails(positon);
}
void showDetails(int index)
{
curCheckPosition = index;
if(dualPane)
{
getListView().setItemChecked(index, true);
DetailFragment details = (DetailFragment)getFragmentManager()
.findFragmentById(R.id.detail);
if(details==null||details.getShownIndex()!=index)
{
android.app.FragmentTransaction ft = getFragmentManager()
.beginTransaction();
ft.replace(R.id.detail, details);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();
}
}else
{
Intent intent = new Intent(getActivity(),MainActivity.DetailActivity.class);
intent.putExtra("index", index);
startActivity(intent);
}
}
}
package com.example.again3;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
public class MainActivity extends FragmentActivity {
public static class DetailActivity extends FragmentActivity
{
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if(getResources().getConfiguration().orientation==Configuration.ORIENTATION_LANDSCAPE)
{
finish();
return;
}
if(savedInstanceState==null)
{
DetailFragment details = new DetailFragment();
details.setArguments(getIntent().getExtras());
getFragmentManager().beginTransaction().add(android.R.id.content, details).commit();
}
}
}
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
}
package com.example.again3;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ScrollView;
import android.widget.TextView;
public class DetailFragment extends Fragment{
public static DetailFragment newInstance(int index)
{
DetailFragment f =new DetailFragment();
Bundle bundle = new Bundle();
bundle.putInt("index", index);
f.setArguments(bundle);
return f;
}
public int getShownIndex()
{
return getArguments().getInt("index",0);
}
public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState)
{
if(container == null)
{
return null;
}
ScrollView scroller = new ScrollView(getActivity());
TextView text = new TextView(getActivity());
text.setPadding(10,10,10,10);
scroller.addView(text);
text.setText(Data.DETAL[getShownIndex()]);
return scroller;
}
}
package com.example.again3;
public final class Data {
public static final String [] TITLES=
{
"线性布局",
"表格布局",
"帧布局",
"相对布局"
};
public static final String [] DETAL =
{
"我就是线性布局"+
"我就是表格布局",
"我就是帧布局",
"我就是相对布局"
};
}
res/layout/main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<fragment class = "com.mingrisoft.ListFragment"
android:id="@+id/titles"
android:layout_height="match_parent"
android:layout_weight="1"
android:layout_width="0px"/>
</LinearLayout>
res/layout-land/main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<fragment class = "com.mingrisoft.ListFragment"
android:id="@+id/titles"
android:layout_height="match_parent"
android:layout_weight="1"
android:layout_width="0px"/>
<FrameLayout
android:id="@+id/detail"
android:layout_width="0px"
android:layout_weight="2"
android:layout_height="match_parent"
android:background="?android:attr/detailsElementBackground"/>
</LinearLayout>
...全文
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ChinaShen____ 2014-11-24
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爆赞啊 学到了
哎，真难 2014-11-24
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应该是名字写错了，，，
Birds2018 2014-11-24
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onCreate(MainActivity.java:27) 错误 ，Didn't find class "com.mingrisoft.ListFragment" 没找到这个类。
你检查一下是不是包名写错了，在XML布局文件里面。
ChinaShen____ 2014-11-24
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新手还看不太懂 求指点
11-23 20:28:54.440: D/AndroidRuntime(941): Shutting down VM
11-23 20:28:54.440: W/dalvikvm(941): threadid=1: thread exiting with uncaught exception (group=0xb4a50ba8)
11-23 20:28:54.460: E/AndroidRuntime(941): FATAL EXCEPTION: main
11-23 20:28:54.460: E/AndroidRuntime(941): Process: com.example.again3, PID: 941
11-23 20:28:54.460: E/AndroidRuntime(941): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.again3/com.example.again3.MainActivity}: android.view.InflateException: Binary XML file line #6: Error inflating class fragment
11-23 20:28:54.460: E/AndroidRuntime(941): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.app.ActivityThread.access$800(ActivityThread.java:135)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.os.Handler.dispatchMessage(Handler.java:102)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.os.Looper.loop(Looper.java:136)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.app.ActivityThread.main(ActivityThread.java:5017)
11-23 20:28:54.460: E/AndroidRuntime(941): at java.lang.reflect.Method.invokeNative(Native Method)
11-23 20:28:54.460: E/AndroidRuntime(941): at java.lang.reflect.Method.invoke(Method.java:515)
11-23 20:28:54.460: E/AndroidRuntime(941): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
11-23 20:28:54.460: E/AndroidRuntime(941): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
11-23 20:28:54.460: E/AndroidRuntime(941): at dalvik.system.NativeStart.main(Native Method)
11-23 20:28:54.460: E/AndroidRuntime(941): Caused by: android.view.InflateException: Binary XML file line #6: Error inflating class fragment
11-23 20:28:54.460: E/AndroidRuntime(941): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:713)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
11-23 20:28:54.460: E/AndroidRuntime(941): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:290)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.app.Activity.setContentView(Activity.java:1929)
11-23 20:28:54.460: E/AndroidRuntime(941): at com.example.again3.MainActivity.onCreate(MainActivity.java:27)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.app.Activity.performCreate(Activity.java:5231)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
11-23 20:28:54.460: E/AndroidRuntime(941): ... 11 more
11-23 20:28:54.460: E/AndroidRuntime(941): Caused by: android.app.Fragment$InstantiationException: Unable to instantiate fragment com.mingrisoft.ListFragment: make sure class name exists, is public, and has an empty constructor that is public
11-23 20:28:54.460: E/AndroidRuntime(941): at android.app.Fragment.instantiate(Fragment.java:597)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.app.Fragment.instantiate(Fragment.java:561)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.app.Activity.onCreateView(Activity.java:4778)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:689)
11-23 20:28:54.460: E/AndroidRuntime(941): ... 21 more
11-23 20:28:54.460: E/AndroidRuntime(941): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.mingrisoft.ListFragment" on path: DexPathList[[zip file "/data/app/com.example.again3-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.example.again3-1, /system/lib]]
11-23 20:28:54.460: E/AndroidRuntime(941): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
11-23 20:28:54.460: E/AndroidRuntime(941): at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
11-23 20:28:54.460: E/AndroidRuntime(941): at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
11-23 20:28:54.460: E/AndroidRuntime(941): at android.app.Fragment.instantiate(Fragment.java:583)
11-23 20:28:54.460: E/AndroidRuntime(941): ... 24 more
哎，真难 2014-11-24
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你可以debug看下它是到哪句话报错的
