Question

我正在尝试在我的应用中实现抽屉布局。我按照android开发者网站上的教程进行操作，一切顺利。我只有一个“小”问题：我在应用程序中午餐，打开抽屉布局并单击列表视图中的元素，一切都很顺利，但是当我尝试打开另一个抽屉并点击其中一个元素时注意到我第一次点击的元素仍然被点击，我无法点击任何其他元素。抽屉只是关闭而不需要任何onClick事件。我的代码是：公共课Eventi扩展活动{ 私人DrawerLayout mDrawerLayout; private ListView mDrawerList; 私人ActionBarDrawerToggle mDrawerToggle;

private CharSequence mDrawerTitle;
private CharSequence mTitle;
private String[] mPlanetTitles;

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

    mTitle = mDrawerTitle = getTitle();
    mPlanetTitles = getResources().getStringArray(R.array.menu);
    mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
    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);
    // set up the drawer's list view with items and click listener
    mDrawerList.setAdapter(new ArrayAdapter<String>(this,
            R.layout.listview_item, mPlanetTitles));
    mDrawerList.setOnItemClickListener(new DrawerItemClickListener());

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

    // ActionBarDrawerToggle ties together the the proper interactions
    // between the sliding drawer and the action bar app icon
    mDrawerToggle = new ActionBarDrawerToggle(this, /* host Activity */
    mDrawerLayout, /* DrawerLayout object */
    R.drawable.ic_launcher, /* nav drawer image to replace 'Up' caret */
    R.string.hello_world, /* "open drawer" description for accessibility */
    R.string.hello_world /* "close drawer" description for accessibility */
    ) {
        public void onDrawerClosed(View view) {
            getActionBar().setTitle(mTitle);
            invalidateOptionsMenu(); // creates call to
                                        // onPrepareOptionsMenu()
        }

        public void onDrawerOpened(View drawerView) {
            getActionBar().setTitle(mDrawerTitle);
            invalidateOptionsMenu(); // creates call to
                                        // onPrepareOptionsMenu()
        }
    };
    mDrawerLayout.setDrawerListener(mDrawerToggle);

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

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.eventi, menu);
    return super.onCreateOptionsMenu(menu);
}

/* Called whenever we call invalidateOptionsMenu() */

@Override
public boolean onPrepareOptionsMenu(Menu menu) {
    // If the nav drawer is open, hide action items related to the content
    // view
    boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
    menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
    return super.onPrepareOptionsMenu(menu);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // The action bar home/up action should open or close the drawer.
    // ActionBarDrawerToggle will take care of this.
    if (mDrawerToggle.onOptionsItemSelected(item)) {
        return true;
    }
    // Handle action buttons
    switch (item.getItemId()) {
    case R.id.action_settings:
        // create intent to perform web search for this planet
        Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
        intent.putExtra(SearchManager.QUERY, getActionBar().getTitle());
        // catch event that there's no activity to handle intent
        if (intent.resolveActivity(getPackageManager()) != null) {
            startActivity(intent);
        } else {
            Toast.makeText(this, R.string.hello_world, Toast.LENGTH_LONG)
                    .show();
        }
        return true;
    default:
        return super.onOptionsItemSelected(item);
    }
}

/* The click listner for ListView in the navigation drawer */
private class DrawerItemClickListener implements
        ListView.OnItemClickListener {
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position,
            long id) {
        System.out.println("c2");

        selectItem(position);
    }
}

private void selectItem(int position) {
    System.out.println("c");
    final String[] classes = getResources().getStringArray(R.array.classi);
    FragmentTransaction tx = getFragmentManager().beginTransaction();
    tx.replace(R.id.drawer_layout,
            Fragment.instantiate(Eventi.this, classes[position]));
    tx.commit();
    /*
     * // update the main content by replacing fragments Fragment fragment =
     * new PlanetFragment(); Bundle args = new Bundle();
     * args.putInt(PlanetFragment.ARG_PLANET_NUMBER, position);
     * fragment.setArguments(args);
     * 
     * FragmentManager fragmentManager = getFragmentManager();
     * fragmentManager.beginTransaction() .replace(R.id.content_frame,
     * fragment).commit();
     */
    // update selected item and title, then close the drawer
    mDrawerList.setItemChecked(position, true);
    setTitle(mPlanetTitles[position]);
    mDrawerLayout.closeDrawer(mDrawerList);
}

@Override
public void setTitle(CharSequence title) {
    mTitle = title;
    getActionBar().setTitle(mTitle);
}

/**
 * When using the ActionBarDrawerToggle, you must call it during
 * onPostCreate() and onConfigurationChanged()...
 */

@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 toggls
    mDrawerToggle.onConfigurationChanged(newConfig);
}

}

我是从开发者网站上获取的，所以我不明白这是错误。有没有人可以帮助我？在此先感谢;）

Answer 1

看看我的代码：

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) {

        switch (position) {

            case 0:

                fragmentManager.beginTransaction()
                        .replace(R.id.content_frame, new MainActivityFragment())
                        .commit();
                break;

            case 1:

                fragmentManager.beginTransaction()
                        .replace(R.id.content_frame, new DbListViewFragment())
                        .commit();
                break;

            case 2:

                fragmentManager.beginTransaction()
                        .replace(R.id.content_frame, new StatisticsFragment())
                        .commit();
                break;

            case 3:

                fragmentManager.beginTransaction()
                        .replace(R.id.content_frame, new CalculatorFragment(), "calculator")
                        .commit();
                break;

        }

我正在使用一个开关盒。位置0是抽屉里ListView中的第一个项目。

Answer 2

问题是您正在使用

                                   FragmentTransaction.replace(r.Id.drawer_layout,fragment).

不要将片段直接附加到drawerlayout元素，尝试添加framelayout作为主要内容容器，然后将片段附加到此framelayou。你的xml内容应该看起来像这个sudo one

<drawerlayout>
    <framelayout Id:fragment_holder/> //attach fragment        to this view
        <ListView/>  // your drawer ListView.
<drawerlayout/>

第一个事件后，单击时DrawerLayout已禁用

2 个答案: