Question

我想使用抽屉菜单实现对我的Sherlock片段的滑动视图。我做到了，似乎工作正常，但是，有一个小问题，我无法弄清楚。

所以让我们从代码的一些方面开始：

MainActivity

public class MainActivity extends SherlockFragmentActivity {

    // Declare Variable
    DrawerLayout mDrawerLayout;
    ListView mDrawerList;
    ActionBarDrawerToggle mDrawerToggle;
    MenuListAdapter mMenuAdapter;
    String[] title;
    String[] subtitle;
    int[] icon;
    Fragment fragment1 = new TestFragment();

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

        // Generate title
        title = new String[] { "Test title" };

        // Generate subtitle
        subtitle = new String[] { "Test subtitle" };

        // Generate icon
        icon = new int[] { R.drawable.action_about };

        // Locate DrawerLayout in drawer_main.xml
        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);

        // Locate ListView in drawer_main.xml
        mDrawerList = (ListView) findViewById(R.id.left_drawer);

        // Set a custom shadow that overlays the main content when the drawer
        // opens
        mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow,
                GravityCompat.START);

        // Pass results to MenuListAdapter Class
        mMenuAdapter = new MenuListAdapter(this, title, subtitle, icon);

        // Set the MenuListAdapter to the ListView
        mDrawerList.setAdapter(mMenuAdapter);

        // Capture button clicks on side menu
        mDrawerList.setOnItemClickListener(new DrawerItemClickListener());

        // Enable ActionBar app icon to behave as action to toggle nav drawer
        getSupportActionBar().setHomeButtonEnabled(true);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        // ActionBarDrawerToggle ties together the the proper interactions
        // between the sliding drawer and the action bar app icon
        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
                R.drawable.ic_drawer, R.string.drawer_open,
                R.string.drawer_close) {

            public void onDrawerClosed(View view) {
                // TODO Auto-generated method stub
                super.onDrawerClosed(view);
            }

            public void onDrawerOpened(View drawerView) {
                // TODO Auto-generated method stub
                super.onDrawerOpened(drawerView);
            }
        };

        mDrawerLayout.setDrawerListener(mDrawerToggle);

        if (savedInstanceState == null) {
            selectItem(0);
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getSupportMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        if (item.getItemId() == android.R.id.home) {

            if (mDrawerLayout.isDrawerOpen(mDrawerList)) {
                mDrawerLayout.closeDrawer(mDrawerList);
            } else {
                mDrawerLayout.openDrawer(mDrawerList);
            }
        }

        return super.onOptionsItemSelected(item);
    }

    // The click listener for ListView in the navigation drawer
    private class DrawerItemClickListener implements
            ListView.OnItemClickListener {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position,
                long id) {
            selectItem(position);
        }
    }

    private void selectItem(int position) {

        FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
        // Locate Position
        switch (position) {
        case 0:
            ft.replace(R.id.content_frame, fragment1);
            break;
        ft.commit();
        mDrawerList.setItemChecked(position, true);
        // Close drawer
        mDrawerLayout.closeDrawer(mDrawerList);
    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        // Sync the toggle state after onRestoreInstanceState has occurred.
        mDrawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        // Pass any configuration change to the drawer toggles
        mDrawerToggle.onConfigurationChanged(newConfig);
    }
}

TestFragment：

public class TestFragment extends SherlockFragment {

    ViewPager mViewPager;

    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.test, container, false);

        mViewPager = (ViewPager) rootView.findViewById(R.id.viewpager);
        PagerTabStrip pagerTabStrip = (PagerTabStrip) rootView.findViewById(R.id.pagerTabStrip);

        testAdapter titleAdapter = new testAdapter(getFragmentManager());
        mViewPager.setAdapter(titleAdapter);
        mViewPager.setCurrentItem(0);

        return rootView;
    }

}

testAdapter

public class testAdapter extends FragmentPagerAdapter {
    private String titles[] = new String[]{"View1","View2"};
    private Fragment frags[] = new Fragment[titles.length];

public systemAdapter(FragmentManager fm) {
    super(fm);
    frags[0] = new testSwipe1();
    frags[1] = new testSwipe2();
}

@Override
public CharSequence getPageTitle (int position){
    Log.v("TitleAdapter - getPageTitle=", titles[position]);
    return titles[position];
}

@Override
public Fragment getItem(int position) {
    Log.v("TitleAdapter - getItem=", String.valueOf(position));
    return frags[position];
}

@Override
public int getCount() {
    return frags.length;
}

testSwipe1和testSwipe2相同：

public class testSwipe1 extends SherlockFragment {

    public View onCreateView(LayoutInflater inflater, ViewGroup container,          Bundle savedInstanceState) {        View rootView = inflater.inflate(R.layout.testswipe_layout, container, false);

        ImageButton testImage = (ImageButton) rootView.findViewById(R.id.test);

        //todo function image

        return rootView; 
}

}

好的，抽屉工作正常，如果我点击“测试标题”，它会通过滑动来扩大布局，我可以在2个测试滑动视图中看到图像。 Owever，如果我打开抽屉并再次点击“测试标题”，我可以看到滑动视图，而我的滑动片段布局上没有图像。如果我将设备置于横向并回到肖像，我的滑动片段上的图像会回来！打开抽屉 - ＆gt;再次点击测试标题 - ＆gt;图像消失.... - ＆gt;园艺师 - ＆gt;肖像 - ＆gt;图像回来了。

定义的布局是抽屉和滑动视图的标准。在swipeviews片段布局中，只有一个imageview。所以问题必须在java部分，但我无法弄清楚在哪里。有帮助吗？

Answer 1

试试这个：TestAdapter应该实现FragmentStatePagerAdapter而不是FragmentsPagerAdapter。原因是方法getItem（）被不同地调用。我有同样的问题。希望这会有所帮助。

Answer 2

我已经编辑了here中提供的代码。

我只是通过使用asyDrawerLayout.java接口的方法来更改OnGestureListener文件。

在onCreate()中，我通过添加以下行将手势设置为当前上下文。

gd = new GestureDetector(this, this);

然后我按以下方式覆盖onTouchEvent()

@Override
public boolean onTouchEvent(MotionEvent event) {
    // TODO Auto-generated method stub
    //Registering TouchEvent with GestureDetector
    return gd.onTouchEvent(event);
}

然后我更改了onFling()如下

@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
        float velocityY) {
    //Defining Sensitivity
    float sensitivity = 30;
    //Swipe Left Check
    if(e1.getX() - e2.getX() > sensitivity && mOpen){
        closeDrawer();
        return true;
    }
    //Swipe Right Check
    if(e2.getX() - e1.getX() > sensitivity && !mOpen){
        openDrawer();
        return true;
    }
    return true;
}

现在正在使用Drawer菜单+ swipeView。

您可以从here下载我编辑过的版本。

Android：抽屉菜单+ swipeView

2 个答案: