android - 带有滑动菜单和操作栏的动态 UI

Question

尝试使用 facebook like sliding menu 实现动态 UI和 actionbarsherlock.首先，我查看了引入 fragment 来处理动态按钮的android文档。但是没有运气和一个星期的时间，我仍然无法让它工作，我想是我对 android 概念的误解。slidingbar 和 actionbarsherlock 工作没有任何问题。

我有一个 HomeScreen.java，其中包含我所有的菜单和预设阶段到目前为止，我已经创建了一个扩展 FragmentPagerAdapter 的 pagerAdapter1.java，以及处理我的工作的三个示例 fragment 类，它们是 task1.java、task2.java,task3.java 足够简单

这是我的部分代码主屏幕.java

import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;
import com.slidingmenu.lib.SlidingMenu;
import com.slidingmenu.lib.app.SlidingFragmentActivity;
public class HomeScreen extends SlidingFragmentActivity {
    public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_home_screen);
            setBehindContentView(R.layout.menu_frame);
    }

PagerAdapter1.java

public class PagerAdapter1 extends FragmentPagerAdapter  {

    private List<Fragment> fragments;
    public PagerAdapter1(FragmentManager fm, List<Fragment> fragments) {
        super(fm);
        this.fragments = fragments;
    }

    public Fragment getItem(int position) {
        return this.fragments.get(position);
    }

    public int getCount() {
        return this.fragments.size();
    }

}

和三个task1.java,2,3

    import android.support.v4.app.Fragment;
    public class Tab1Fragment extends Fragment{

onCreateView(android.view.LayoutInflater, android.view.ViewGroup, android.os.Bundle)
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
            if (container == null) {
                return null;
            }
            return (LinearLayout)inflater.inflate(R.layout.tab_frag1_layout, container, false);
        }

我觉得最好用图片来解释我的问题

主屏幕是一个预设阶段，每当用户点击菜单时，这个页面就会切换到他想要的页面

这是我的菜单

我的问题是如何将这 3 个 fragment 添加到我的主屏幕中？我已经尝试了很多教程，但它在我的情况下不起作用。大多数教程都是用代码创建 fragment ，我只想将我的 3 任务包含在其中

Answer 1

我会尝试解释这个示例代码，您可以根据需要使用。

这是您的 BehindContent (SlidingMenu) 的 ListFragment:

public class ColorMenuFragment extends ListFragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.list, null);
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        String[] colors = getResources().getStringArray(R.array.color_names);
        ArrayAdapter<String> colorAdapter = new ArrayAdapter<String>(getActivity(), 
                android.R.layout.simple_list_item_1, android.R.id.text1, colors);
        setListAdapter(colorAdapter);
//This array is only to fill SlidingMenu with a Simple String Color.
//I used MergeAdapter from Commonsware to create a very nice SlidingMenu.
    }

    @Override
    public void onListItemClick(ListView lv, View v, int position, long id) {
//This switch case is a listener to select wish item user have been selected,  so it Call
//ColorFragment, you can change to Task1Fragment, Task2Fragment, Task3Fragment.
        Fragment newContent = null;
        switch (position) {
        case 0:
            newContent = new ColorFragment(R.color.red);
            break;
        case 1:
            newContent = new ColorFragment(R.color.green);
            break;
        case 2:
            newContent = new ColorFragment(R.color.blue);
            break;
        case 3:
            newContent = new ColorFragment(android.R.color.white);
            break;
        case 4:
            newContent = new ColorFragment(android.R.color.black);
            break;
        }
        if (newContent != null)
            switchFragment(newContent);
    }

    // the meat of switching the above fragment
    private void switchFragment(Fragment fragment) {
        if (getActivity() == null)
            return;

        if (getActivity() instanceof FragmentChangeActivity) {
            FragmentChangeActivity fca = (FragmentChangeActivity) getActivity();
            fca.switchContent(fragment);
        } else if (getActivity() instanceof ResponsiveUIActivity) {
            ResponsiveUIActivity ra = (ResponsiveUIActivity) getActivity();
            ra.switchContent(fragment);
        }
    }


}

这是您的 BaseActivity 类:

它没有滑动，据我所知，你不需要这个。

public class FragmentChangeActivity extends BaseActivity {

    private Fragment mContent;

    public FragmentChangeActivity() {
        super(R.string.changing_fragments);
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // set the Above View
        if (savedInstanceState != null)
            mContent = getSupportFragmentManager().getFragment(savedInstanceState, "mContent");
        if (mContent == null)
            mContent = new ColorFragment(R.color.red);  

        // set the Above View
            //This will be the first AboveView
        setContentView(R.layout.content_frame);
        getSupportFragmentManager()
        .beginTransaction()
        .replace(R.id.content_frame, mContent)
        .commit();

        // set the Behind View
            //This is the SlidingMenu
        setBehindContentView(R.layout.menu_frame);
        getSupportFragmentManager()
        .beginTransaction()
        .replace(R.id.menu_frame, new ColorMenuFragment())
        .commit();

        // customize the SlidingMenu
            //This is opcional
        getSlidingMenu().setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        getSupportFragmentManager().putFragment(outState, "mContent", mContent);
    }

    public void switchContent(Fragment fragment) {
            // the meat of switching fragment
        mContent = fragment;
        getSupportFragmentManager()
        .beginTransaction()
        .replace(R.id.content_frame, fragment)
        .commit();
        getSlidingMenu().showContent();
    }

}

好的，如果您想将 ColorFragment 更改为其他任何内容，请执行以下操作:

首先，选择您要使用的项目:

case 0:
                newContent = new ColorFragment(R.color.red);
                break;

到:

case 0:
            newContent = new ArrayListFragment();
            break;

我只做了一个arraylist，这只是一个简单的例子，你可以做很多事情，然后你可以阅读Fragment学习如何做不同的事情。

    public class ArrayListFragment extends ListFragment {

    @Override                               
            public void onActivityCreated(Bundle savedInstanceState) {
                super.onActivityCreated(savedInstanceState);
                setListAdapter(new ArrayAdapter<String>(getActivity(),
                        android.R.layout.simple_list_item_1, Listnames.TITLES));
//Listnames is a class with String[] TITLES;

}

        @Override
        public void onListItemClick(ListView l, View v, int position, long id) {
            Log.i("FragmentList2", "Item clicked: " + id);

            String item = (String) getListAdapter().getItem(position);
        Toast.makeText(getActivity(), item, Toast.LENGTH_LONG).show();

        }

    }

好吧，如果你误解了什么，请告诉我。