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我开始了，这是我的第一篇文章。任何帮助将不胜感激！

我已经成功地使用 ABS 实现了选项卡。我想更改选项卡并通过单击另一个选项卡中的按钮重新加载片段活动。从搜索帖子看来，每个人都使用 TabHost 完成了此操作。没有 TabHost 有没有办法做到这一点？

请看我想做的图表图片：http: //i.imgur.com/wwDBj.png

请参阅下面的 MainActivity 代码：

public class MainActivity extends SherlockFragmentActivity {

private int tabSelected = 0;


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


            getSupportActionBar().setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);


            getSupportActionBar().addTab(
                    getTab(new TabListener<FragmenOne>(this, FragmenOne.class
                            .getName(), FragmenOne.class), "TabOne"));
            getSupportActionBar().addTab(
                    getTab(new TabListener<FragmenTwo>(this, FragmenTwo.class
                            .getName(), FragmenTwo.class), "TabTwo"));
            getSupportActionBar().addTab(
                    getTab(new TabListener<FragmenThree>(this, FragmenThree.class
                            .getName(), FragmenThree.class), "TabThree"));
}

private Tab getTab(TabListener listener, String title) {
    ActionBar.Tab tab = getSupportActionBar().newTab();
    tab.setTabListener(listener);
    tab.setText(title);
    return tab;
}

public class TabListener<T extends Fragment> implements
ActionBar.TabListener {
    private final SherlockFragmentActivity mActivity;
    private final String mTag;
    private final Class<T> mClass;
    private final Bundle mArgs;
    public Fragment mFragment;

    public TabListener(SherlockFragmentActivity activity, String tag,
            Class<T> clz) {
        this(activity, tag, clz, null);
    }

    public TabListener(SherlockFragmentActivity activity, String tag,
            Class<T> clz, Bundle args) {
        mActivity = activity;
        mTag = tag;
        mClass = clz;
        mArgs = args;

        mFragment = mActivity.getSupportFragmentManager()
                .findFragmentByTag(tag);
        if (mFragment != null && !mFragment.isDetached()) {
            FragmentTransaction ft = mActivity.getSupportFragmentManager()
                    .beginTransaction();
            ft.detach(mFragment);
            ft.commit();
        }


    }

    @Override
    public void onTabSelected(Tab tab, FragmentTransaction ft) {


                        if(tab.getPosition()==0)
                        {
                            tabSelected = 0;
                            FragmenOne frag = new FragmenOne();
                            ft.replace(android.R.id.content, frag);     
                        }
                        else if(tab.getPosition()==1)
                        {
                            tabSelected = 1;
                            FragmenTwo frag = new FragmenTwo();
                            items = 1;
                            invalidateOptionsMenu();
                            ft.replace(android.R.id.content, frag);
                        }
                        else if(tab.getPosition()==2)
                        {
                            tabSelected = 2;
                            FragmenThree frag = new FragmenThree();
                            ft.replace(android.R.id.content, frag);
                        }


    }


    @Override
    public void onTabUnselected(Tab tab, FragmentTransaction ft) {
        if (mFragment != null) {
            ft.detach(mFragment);
            items = 0;
            invalidateOptionsMenu();
        }

    }

    @Override
    public void onTabReselected(Tab tab, FragmentTransaction ft) {

    }
}

public void setCurrentItem() {

    FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
    FragmenTwo frag = new FragmenTwo();
    ft.replace(android.R.id.content, frag);
    ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
    ft.commit();

}

这是来自其他活动的代码，例如，我希望单击按钮以加载 tab2

public class TabThree extends Activity  implements OnItemSelectedListener {

// Add button
Button btnAdd;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.tabthree);

    // add button
    btnAdd = (Button) findViewById(R.id.button);



    btnAdd.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {


        //What to write here??????

        }
    });
}
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1 回答 1

0

尝试这种方式这是您应该使用的最佳方法

第一步：像这样在类中创建接口。TabThree

// The listener we are to notify when a Button is clicked
OnNotifyButtonClickedListener mOnNotifyButtonClickedListener = null;

/**
 * Represents a listener that will be notified of tab selections.
 */
public interface OnNotifyButtonClickedListener {

    public void OnNotifyButtonClicked();
}
/**
 * Sets the listener that should be notified of tab selection events.
 * 
 * @param listener
 *            the listener to notify.
 */
public void setOnNotifyButtonClickedListener(
        OnNotifyButtonClickedListener listener) {
    mOnNotifyButtonClickedListener = listener;
}

第二步：在MainActivity类中实现。

public class MainActivity extends SherlockFragmentActivity
        implements
        TabThree.OnNotifyButtonClickedListener{
}

第三步：点击你的 btnAdd 按钮TabThree Class

btnAdd = (Button) findViewById(R.id.button);

btnAdd.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View arg0) {

       mOnNotifyButtonClickedListener.OnNotifyButtonClicked();

    }
});

第四步：使用您的代码并更改您的标签TabThree Class

@Override
    public void OnNotifyButtonClicked() {       

    // Put your tab selection code here.

    }

& 最后一件事不要忘记注册界面 Like 

   FragmenThree mFragment= new FragmenThree();
    mFragment.setOnNotifyButtonClickedListener(this);

编辑：在您的情况下以这种方式注册

   mFragment = mActivity.getSupportFragmentManager()
                .findFragmentByTag(tag);
        if (mFragment != null && !mFragment.isDetached()) {

            mFragment.setOnNotifyButtonClickedListener(this);
            FragmentTransaction ft = mActivity.getSupportFragmentManager()
                    .beginTransaction();
            ft.detach(mFragment);
            ft.commit();
        }
于 2013-01-13T18:58:47.157 回答