Question

当我向上选择标签时，它可以工作，但当我返回时，内容变为白色。 LogCat显示：

FATAL EXCEPTION：main java.lang.IllegalArgumentException：无视图找到ID为0x7f040070（com。。：id / list_news_frame_ *）的片段 FeedPlayerNews *片段{4055c188＃4 id = 0x7f040070} at android.support.v4.app.FragmentManagerImpl.moveToState（FragmentManager.java:903）在 android.support.v4.app.FragmentManagerImpl.moveToState（FragmentManager.java:1088）在 android.support.v4.app.BackStackRecord.run（BackStackRecord.java:682）在 android.support.v4.app.FragmentManagerImpl.execPendingActions（FragmentManager.java:1444）在 android.support.v4.app.FragmentManagerImpl.executePendingTransactions（FragmentManager.java:461）在 android.support.v4.app.FragmentPagerAdapter.finishUpdate（FragmentPagerAdapter.java:141）在android.support.v4.view.ViewPager.populate（ViewPager.java:1012）at at android.support.v4.view.ViewPager.setCurrentItemInternal（ViewPager.java:523）在 android.support.v4.view.ViewPager.setCurrentItemInternal（ViewPager.java:495）在 android.support.v4.view.ViewPager.setCurrentItem（ViewPager.java:476） at com。。 .viewpager.TabsAdapter.onTabSelected（TabsAdapter.java:76）at at com.actionbarsherlock.internal.app.ActionBarImpl.selectTab（ActionBarImpl.java:526）在 com.actionbarsherlock.internal.app.ActionBarImpl $ TabImpl.select（ActionBarImpl.java:907）在 com.actionbarsherlock.internal.widget.ScrollingTabContainerView $ TabClickListener.onClick（ScrollingTabContainerView.java:504）在android.view.View.performClick（View.java:2506）at android.view.View $ PerformClick.run（View.java:9112）at android.os.Handler.handleCallback（Handler.java:587）at android.os.Handler.dispatchMessage（Handler.java:92）at android.os.Looper.loop（Looper.java:130）at android.app.ActivityThread.main（ActivityThread.java:3835）at java.lang.reflect.Method.invokeNative（Native Method）at java.lang.reflect.Method.invoke（Method.java:507）at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:864）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:622）at dalvik.system.NativeStart.main（原生方法）

我的课程：

public class TabsAdapter extends FragmentPagerAdapter implements
        ActionBar.TabListener, ViewPager.OnPageChangeListener {
    private final Context mContext;
    private final ActionBar mActionBar;
    private final ViewPager mViewPager;
    private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>();
    ProgressDialog dialog;

    static final class TabInfo {
        private final Class<?> clss;
        private final Bundle args;

        TabInfo(Class<?> _class, Bundle _args) {
            clss = _class;
            args = _args;
        }
    }

    public TabsAdapter(SherlockFragmentActivity activity, ViewPager pager) {
        super(activity.getSupportFragmentManager());
        mContext = activity;
        mActionBar = activity.getSupportActionBar();
        mViewPager = pager;
        mViewPager.setAdapter(this);
        mViewPager.setOnPageChangeListener(this);
    }

    public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args) {
        TabInfo info = new TabInfo(clss, args);
        tab.setTag(info);
        tab.setTabListener(this);
        mTabs.add(info);
        mActionBar.addTab(tab);
        notifyDataSetChanged();
    }

    public int getCount() {
        return mTabs.size();
    }

    public SherlockFragment getItem(int position) {
        TabInfo info = mTabs.get(position);
        return (SherlockFragment) Fragment.instantiate(mContext,
                info.clss.getName(), info.args);
    }

    public void onPageScrolled(int position, float positionOffset,
            int positionOffsetPixels) {
    }

    public void onPageSelected(int position) {
        mActionBar.setSelectedNavigationItem(position);
    }

    public void onPageScrollStateChanged(int state) {
    }

    public void onTabSelected(Tab tab, FragmentTransaction ft) {
        mViewPager.setCurrentItem(tab.getPosition());
        Object tag = tab.getTag();
        for (int i = 0; i < mTabs.size(); i++) {
            if (mTabs.get(i) == tag) {
                mViewPager.setCurrentItem(i);
            }
        }
    }

    public void onTabUnselected(Tab tab, FragmentTransaction ft) {
    }

    public void onTabReselected(Tab tab, FragmentTransaction ft) {
    }

}

更新：

持有viewpager的方法：

public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        ConnectionChangeReceiver cm = new ConnectionChangeReceiver();
        cm.onReceive(this, getIntent());

        mViewPager = new ViewPager(this);
        mViewPager.setId(R.id.viewpager);
        setContentView(mViewPager);

        RssReaderTask.setRssUrl(this,
                "http://url?type=rss");
        SchedulerManager.getInstance().saveTask(this, "0 9-20 * * 1,2,3,4,5",
                RssReaderTask.class);
        SchedulerManager.getInstance().restart(this, RssReaderTask.class);


        NotifyClass.getInstance().setSlideCreate(true);

        if (!isOnline()) {
            showDialog(DIALOG_ERROR_CONNECTION);
            Log.d("TAG", "TRUE");
        }

        if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_LARGE) {
            // do nothing
        } else {
            this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        }
        globalvar = new GlobalVariable();
        globalvar.set_radio_encours_global(false);
        globalvar.setOnHold_global(false);

        mTabsAdapter = new TabsAdapter(this, mViewPager);

        bar = getSupportActionBar();
        bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
        bar.setDisplayShowTitleEnabled(false);
        bar.setDisplayShowHomeEnabled(false);

        mTabsAdapter.addTab(bar.newTab().setText("Tab1"),
                Tab1.class, null);
        mTabsAdapter.addTab(bar.newTab().setText("Tab2"), Tab2.class,
                null);
        mTabsAdapter.addTab(bar.newTab().setText("Tab3 "),
                Tab3.class, null);
        mTabsAdapter.addTab(bar.newTab().setText("Tab4"),
                Tab4.class, null);

    }

Answer 1

你的课程没问题，它应该正常工作，我使用同样的工具......我认为你的活动/片段中存在一个问题，它存放了viewpager，所以我建议你去修复你的onCreate / onCreateView方法。
如果你找不到任何东西，如果命名方法不是错误的原因，请发布此方法的代码或类的代码。

ActionBar Sherlock ViewPager片段

1 个答案: