anki填空卡正确代码

Question

我试图使用Tabs和4 ViewPager实现Fragments滑动。当我滑动选项卡时，每个选项卡上都会正确显示碎片的相应xml layouts，但片段的代码未正确执行。例如 - 以下选项卡中包含相应的片段。

TAB0-ButtonFragment

public class ButtonFragment extends Fragment {

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

    View rootView = inflater.inflate(R.layout.fragment_button, container, false);
    Log.i("inside", "button fragment");
    return rootView;
}

TAB1图像碎片

public class ImageFragment extends Fragment {

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

    View rootView = inflater.inflate(R.layout.fragment_image, container, false);
    Log.i("inside", "image fragment");
    return rootView;
}

TAB2文本片段

    public class TextFragment extends Fragment {

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

    View rootView = inflater.inflate(R.layout.fragment_text, container, false);
    Log.i("inside", "text fragment");
    return rootView;
}

Tab3-Test公共类测试扩展Fragment {

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

    View rootView = inflater.inflate(R.layout.temp, container, false);
    Log.i("inside", "tessssssssst fragment");
    return rootView;
}

显示选项卡时，我同时获得tab0和tab1的日志消息。然后在滑动并转到tab1后，我得到tab2的日志消息。在刷到tab2后，我收到选项卡3的日志消息，当到达选项卡3时，没有显示日志消息。任何人都可以告诉我如何执行相应选项卡的相应代码？我剩下的代码如下：

public class TabsPagerAdapter extends FragmentPagerAdapter { //Update - code formatting

public TabsPagerAdapter(FragmentManager fm) {
    super(fm);
}

@Override
public Fragment getItem( int index) {
    Log.i("index", "" + index);
    switch (index) {
    case 0:
        // Top Rated fragment activity
        return new ButtonFragment();
    case 1:
        // Games fragment activity
        return new ImageFragment();
    case 2:
        // Movies fragment activity
        return new TextFragment();
    case 3:
        return new Test();
    }

    return null;
}

@Override
public int getCount() {
    // get item count - equal to number of tabs
    return 4;
}

主要信息

       public class MainActivity extends FragmentActivity implements OnTabChangeListener, OnPageChangeListener {

private TabsPagerAdapter mAdapter;
private ViewPager mViewPager;
private TabHost mTabHost;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    mViewPager = (ViewPager) findViewById(R.id.viewpager);

    // Tab Initialization
    initialiseTabHost();
    mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
    // Fragments and ViewPager Initialization


    mViewPager.setAdapter(mAdapter);
    mViewPager.setOnPageChangeListener(MainActivity.this);
}

// Method to add a TabHost
private static void AddTab(MainActivity activity, TabHost tabHost, TabHost.TabSpec tabSpec) {
    tabSpec.setContent(new MyTabFactory(activity));
    tabHost.addTab(tabSpec);
}

// Manages the Tab changes, synchronizing it with Pages
public void onTabChanged(String tag) {
    int pos = this.mTabHost.getCurrentTab();
    this.mViewPager.setCurrentItem(pos);
}

@Override
public void onPageScrollStateChanged(int arg0) {
}

// Manages the Page changes, synchronizing it with Tabs
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
    int pos = this.mViewPager.getCurrentItem();
    this.mTabHost.setCurrentTab(pos);
}

@Override
    public void onPageSelected(int arg0) {

}


// Tabs Creation
private void initialiseTabHost() {
    mTabHost = (TabHost) findViewById(android.R.id.tabhost);
    mTabHost.setup();

    // TODO Put here your Tabs
    MainActivity.AddTab(this, this.mTabHost, this.mTabHost.newTabSpec("ButtonTab").setIndicator("ButtonTab"));
    MainActivity.AddTab(this, this.mTabHost, this.mTabHost.newTabSpec("ImageTab").setIndicator("ImageTab"));
    MainActivity.AddTab(this, this.mTabHost, this.mTabHost.newTabSpec("TextTab").setIndicator("TextTab"));
    MainActivity.AddTab(this, this.mTabHost, this.mTabHost.newTabSpec("TestingTab").setIndicator("TestingTab"));

    mTabHost.setOnTabChangedListener(this);
}

Answer 1

另一答案

anki填空卡正确代码

选项卡执行android中下一个片段中存在的代码