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分享使用android-support-v4.jar出现的问题
今天调试一块设备的时候突然冒出这个错误
之前一直使用ViewPager在其他设备上都没问题，是跟系统有关系的吗？求解
01-01 09:10:44.309: W/dalvikvm(7226): VFY: unable to resolve virtual method 551: Landroid/support/v4/app/Fragment;.onViewCreated (Landroid/view/View;Landroid/os/Bundle;)V
01-01 09:10:44.309: D/dalvikvm(7226): VFY: replacing opcode 0x6f at 0x0000
01-01 09:10:44.310: D/AndroidRuntime(7226): Shutting down VM
01-01 09:10:44.310: W/dalvikvm(7226): threadid=1: thread exiting with uncaught exception (group=0x40bd81f8)
01-01 09:10:44.315: E/AndroidRuntime(7226): FATAL EXCEPTION: main
01-01 09:10:44.315: E/AndroidRuntime(7226): java.lang.NoSuchMethodError: android.support.v4.app.Fragment.setMenuVisibility
01-01 09:10:44.315: E/AndroidRuntime(7226): at android.support.v4.app.FragmentPagerAdapter.instantiateItem(FragmentPagerAdapter.java:103)
01-01 09:10:44.315: E/AndroidRuntime(7226): at com.tcl.globlelive.adapter.InfinitePagerAdapter.instantiateItem(InfinitePagerAdapter.java:51)
01-01 09:10:44.315: E/AndroidRuntime(7226): at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:800)
01-01 09:10:44.315: E/AndroidRuntime(7226): at android.support.v4.view.ViewPager.populate(ViewPager.java:929)
01-01 09:10:44.315: E/AndroidRuntime(7226): at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:522)
01-01 09:10:44.315: E/AndroidRuntime(7226): at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:494)
01-01 09:10:44.315: E/AndroidRuntime(7226): at android.support.v4.view.ViewPager.dataSetChanged(ViewPager.java:874)
01-01 09:10:44.315: E/AndroidRuntime(7226): at android.support.v4.view.ViewPager$PagerObserver.onChanged(ViewPager.java:2688)
01-01 09:10:44.315: E/AndroidRuntime(7226): at android.database.DataSetObservable.notifyChanged(DataSetObservable.java:35)
01-01 09:10:44.315: E/AndroidRuntime(7226): at android.support.v4.view.PagerAdapter.notifyDataSetChanged(PagerAdapter.java:276)
01-01 09:10:44.315: E/AndroidRuntime(7226): at com.tcl.globlelive.GlobalLiveActivity$2.handleMessage(GlobalLiveActivity.java:1069)
01-01 09:10:44.315: E/AndroidRuntime(7226): at android.os.Handler.dispatchMessage(Handler.java:99)
01-01 09:10:44.315: E/AndroidRuntime(7226): at android.os.Looper.loop(Looper.java:137)
01-01 09:10:44.315: E/AndroidRuntime(7226): at android.app.ActivityThread.main(ActivityThread.java:4424)
01-01 09:10:44.315: E/AndroidRuntime(7226): at java.lang.reflect.Method.invokeNative(Native Method)
01-01 09:10:44.315: E/AndroidRuntime(7226): at java.lang.reflect.Method.invoke(Method.java:511)
01-01 09:10:44.315: E/AndroidRuntime(7226): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
01-01 09:10:44.315: E/AndroidRuntime(7226): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
01-01 09:10:44.315: E/AndroidRuntime(7226): at dalvik.system.NativeStart.main(Native Method)之前一直使用ViewPager在其他设备上都没问题，是跟系统有关系的吗？求解
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luobin2601258 2014-05-08
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楼主解决了吗?求解
跑步_跑步 2014-02-13
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在源码的
@Override
public Object instantiateItem(ViewGroup container, int position) {
if (mCurTransaction == null) {
mCurTransaction = mFragmentManager.beginTransaction();
}
final long itemId = getItemId(position);
// Do we already have this fragment?
String name = makeFragmentName(container.getId(), itemId);
Fragment fragment = mFragmentManager.findFragmentByTag(name);
if (fragment != null) {
if (DEBUG) Log.v(TAG, "Attaching item #" + itemId + ": f=" + fragment);
mCurTransaction.attach(fragment);
} else {
fragment = getItem(position);
if (DEBUG) Log.v(TAG, "Adding item #" + itemId + ": f=" + fragment);
mCurTransaction.add(container.getId(), fragment,
makeFragmentName(container.getId(), itemId));
}
if (fragment != mCurrentPrimaryItem) {
//在这里报错了
fragment.setMenuVisibility(false);
fragment.setUserVisibleHint(false);
}
return fragment;
}跑步_跑步 2014-02-13
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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.support.v4.app;
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
/**
* Implementation of {@link android.support.v4.view.PagerAdapter} that
* represents each page as a {@link Fragment} that is persistently
* kept in the fragment manager as long as the user can return to the page.
*
* <p>This version of the pager is best for use when there are a handful of
* typically more static fragments to be paged through, such as a set of tabs.
* The fragment of each page the user visits will be kept in memory, though its
* view hierarchy may be destroyed when not visible. This can result in using
* a significant amount of memory since fragment instances can hold on to an
* arbitrary amount of state. For larger sets of pages, consider
* {@link FragmentStatePagerAdapter}.
*
* <p>When using FragmentPagerAdapter the host ViewPager must have a
* valid ID set.</p>
*
* <p>Subclasses only need to implement {@link #getItem(int)}
* and {@link #getCount()} to have a working adapter.
*
* <p>Here is an example implementation of a pager containing fragments of
* lists:
*
* {@sample development/samples/Support4Demos/src/com/example/android/supportv4/app/FragmentPagerSupport.java
* complete}
*
* <p>The <code>R.layout.fragment_pager</code> resource of the top-level fragment is:
*
* {@sample development/samples/Support4Demos/res/layout/fragment_pager.xml
* complete}
*
* <p>The <code>R.layout.fragment_pager_list</code> resource containing each
* individual fragment's layout is:
*
* {@sample development/samples/Support4Demos/res/layout/fragment_pager_list.xml
* complete}
*/
public abstract class FragmentPagerAdapter extends PagerAdapter {
private static final String TAG = "FragmentPagerAdapter";
private static final boolean DEBUG = false;
private final FragmentManager mFragmentManager;
private FragmentTransaction mCurTransaction = null;
private Fragment mCurrentPrimaryItem = null;
public FragmentPagerAdapter(FragmentManager fm) {
mFragmentManager = fm;
}
/**
* Return the Fragment associated with a specified position.
*/
public abstract Fragment getItem(int position);
@Override
public void startUpdate(ViewGroup container) {
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
if (mCurTransaction == null) {
mCurTransaction = mFragmentManager.beginTransaction();
}
final long itemId = getItemId(position);
// Do we already have this fragment?
String name = makeFragmentName(container.getId(), itemId);
Fragment fragment = mFragmentManager.findFragmentByTag(name);
if (fragment != null) {
if (DEBUG) Log.v(TAG, "Attaching item #" + itemId + ": f=" + fragment);
mCurTransaction.attach(fragment);
} else {
fragment = getItem(position);
if (DEBUG) Log.v(TAG, "Adding item #" + itemId + ": f=" + fragment);
mCurTransaction.add(container.getId(), fragment,
makeFragmentName(container.getId(), itemId));
}
if (fragment != mCurrentPrimaryItem) {
//在这里报错了
fragment.setMenuVisibility(false);
fragment.setUserVisibleHint(false);
}
return fragment;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
if (mCurTransaction == null) {
mCurTransaction = mFragmentManager.beginTransaction();
}
if (DEBUG) Log.v(TAG, "Detaching item #" + getItemId(position) + ": f=" + object
+ " v=" + ((Fragment)object).getView());
mCurTransaction.detach((Fragment)object);
}
@Override
public void setPrimaryItem(ViewGroup container, int position, Object object) {
Fragment fragment = (Fragment)object;
if (fragment != mCurrentPrimaryItem) {
if (mCurrentPrimaryItem != null) {
mCurrentPrimaryItem.setMenuVisibility(false);
mCurrentPrimaryItem.setUserVisibleHint(false);
}
if (fragment != null) {
fragment.setMenuVisibility(true);
fragment.setUserVisibleHint(true);
}
mCurrentPrimaryItem = fragment;
}
}
@Override
public void finishUpdate(ViewGroup container) {
if (mCurTransaction != null) {
mCurTransaction.commitAllowingStateLoss();
mCurTransaction = null;
mFragmentManager.executePendingTransactions();
}
}
@Override
public boolean isViewFromObject(View view, Object object) {
return ((Fragment)object).getView() == view;
}
@Override
public Parcelable saveState() {
return null;
}
@Override
public void restoreState(Parcelable state, ClassLoader loader) {
}
/**
* Return a unique identifier for the item at the given position.
*
* <p>The default implementation returns the given position.
* Subclasses should override this method if the positions of items can change.</p>
*
* @param position Position within this adapter
* @return Unique identifier for the item at position
*/
public long getItemId(int position) {
return position;
}
private static String makeFragmentName(int viewId, long id) {
return "android:switcher:" + viewId + ":" + id;
}
}
marlenna 2014-02-13
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应该是的，能追查到源码吗？
跑步_跑步 2014-02-13
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package com.tcl.globlelive.adapter;
import android.os.Parcelable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
/**
* A PagerAdapter that wraps around another PagerAdapter to handle paging
* wrap-around.
*/
public class InfinitePagerAdapter extends FragmentPagerAdapter {
private static final String TAG = "InfinitePagerAdapter";
private static final boolean DEBUG = true;
private FragmentPagerAdapter adapter;
public InfinitePagerAdapter(FragmentManager fm, FragmentPagerAdapter adapter) {
super(fm);
this.adapter = adapter;
}
@Override
public int getCount() {
// warning: scrolling to very high values (1,000,000+) results in
// strange drawing behaviour
return Integer.MAX_VALUE;
}
/**
* @return the {@link #getCount()} result of the wrapped adapter
*/
public int getRealCount() {
return adapter.getCount();
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
int virtualPosition = position % getRealCount();
debug("instantiateItem: real position: " + position);
debug("instantiateItem: virtual position: " + virtualPosition);
// only expose virtual position to the inner adapter
return adapter.instantiateItem(container, virtualPosition);
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
int virtualPosition = position % getRealCount();
debug("destroyItem: real position: " + position);
debug("destroyItem: virtual position: " + virtualPosition);
// only expose virtual position to the inner adapter
adapter.destroyItem(container, virtualPosition, object);
}
//for update
@Override
public int getItemPosition(Object object) {
// TODO Auto-generated method stub
return POSITION_NONE;
}
/*
* Delegate rest of methods directly to the inner adapter.
*/
@Override
public void finishUpdate(ViewGroup container) {
adapter.finishUpdate(container);
}
@Override
public boolean isViewFromObject(View view, Object object) {
return adapter.isViewFromObject(view, object);
}
@Override
public void restoreState(Parcelable bundle, ClassLoader classLoader) {
adapter.restoreState(bundle, classLoader);
}
@Override
public Parcelable saveState() {
return adapter.saveState();
}
@Override
public void startUpdate(ViewGroup container) {
adapter.startUpdate(container);
}
/*
* End delegation
*/
private void debug(String message) {
if (DEBUG) {
Log.d(TAG, message);
}
}
@Override
public Fragment getItem(int arg0) {
// TODO Auto-generated method stub
return adapter.getItem(arg0);
}
}
marlenna 2014-02-13
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再仔细看看报错的第一行，定位到你的代码行数，确定是不是你的代码的原因：at android.support.v4.app.FragmentPagerAdapter.instantiateItem(FragmentPagerAdapter.java:103)
跑步_跑步 2014-02-13
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应该不是吧，如果有误的话，在别的设备上怎么可以正常使用呢。我先试试吧
marlenna 2014-02-13
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看看是不是你导的android-support-v4.jar有误啊，试试这样的方法：首先在Project->properties->Java Build Path->Libraries->Add External Jars中加入sdk目录下的extras/android/support/v4/android-support-v4.jar（如果找不到，则需要 用sdk manager下载android support package）。
