抽屉项目在android中的选定效果

概述：

• 我有一个导航抽屉
• 当位置为

  0

  至

  红色

• 在列表中选择

  textView

  设置为的不同元素时

  红色

  和其他颜色黑色
• 因此，在任何时候，必须在<代码>红色（选中）中只设置一个<代码>文本视图 适配器）其他为

  黑色

• 还要注意的是，我在中为

  textview

  设置红色的原因 适配器when位置为o，因为它是第一次加载时显示的第一个片段
• 当我选择其他适配器时，必须取消选择该适配器，但该适配器未被选中 发生

我使用的代码是：

private class SlideMenuClickListener implements
ListView.OnItemClickListener {
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position,
            long id) {
        // display view for selected nav drawer item
        displayView(position);
        setNavDrawerItemNormal();
        title=(TextView) view.findViewById(R.id.title);
        title.setTextColor(getApplicationContext().getResources().getColor(R.color.red));

    }
}


public void setNavDrawerItemNormal()
{
    for (int i=0; i< mDrawerList.getChildCount(); i++)
    {
        View v = mDrawerList.getChildAt(i);
        TextView txtview = ((TextView) v.findViewById(R.id.title));
        txtview.setTextColor(getApplicationContext().getResources().getColor(R.color.black));
    }
}

私有类SlideMenuClickListener实现
ListView.com侦听器{
@凌驾
public void onItemClick（AdapterView父视图、视图、整型位置、，
长id）{
//所选导航抽屉项目的显示视图
显示视图（位置）；
setNavDrawerItemNormal（）；
title=（TextView）view.findViewById（R.id.title）；
title.setTextColor（getApplicationContext（）.getResources（）.getColor（R.color.red））；
}
}
public void setNavDrawerItemNormal（）
{
for（int i=0；i

MainActivity.java

public class MainActivity extends Activity {
    private DrawerLayout mDrawerLayout;
    private GridView mDrawerList;
    private ActionBarDrawerToggle mDrawerToggle;

    // nav drawer title
    private CharSequence mDrawerTitle;

    // used to store app title
    private CharSequence mTitle;

    // slide menu items
    private String[] navMenuTitles;
    private TypedArray navMenuIcons;

    private ArrayList<NavDrawerItem> navDrawerItems;
    private NavDrawerListAdapter adapter;

    private TextView title;

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

        mTitle = mDrawerTitle = getTitle();

        // load slide menu items
        navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items);

        // nav drawer icons from resources
        navMenuIcons = getResources()
                .obtainTypedArray(R.array.nav_drawer_icons);

        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        mDrawerList = (GridView) findViewById(R.id.list_slidermenu);


        navDrawerItems = new ArrayList<NavDrawerItem>();

        // adding nav drawer items to array
        // Home
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[0], navMenuIcons.getResourceId(0, -1)));
        // Find People
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[1], navMenuIcons.getResourceId(1, -1)));
        // Photos
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[2], navMenuIcons.getResourceId(2, -1)));
        // Communities, Will add a counter here
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[3], navMenuIcons.getResourceId(3, -1), true, "22"));
        // Pages
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[4], navMenuIcons.getResourceId(4, -1)));
        // What's hot, We  will add a counter here
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[5], navMenuIcons.getResourceId(5, -1), true, "50+"));


        // Recycle the typed array
        navMenuIcons.recycle();

        mDrawerList.setOnItemClickListener(new SlideMenuClickListener());

        // setting the nav drawer list adapter
        adapter = new NavDrawerListAdapter(getApplicationContext(),
                navDrawerItems);
        mDrawerList.setAdapter(adapter);

        // enabling action bar app icon and behaving it as toggle button
        getActionBar().setDisplayHomeAsUpEnabled(true);
        //getActionBar().setHomeButtonEnabled(true);

        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
                R.drawable.ic_drawer, //nav menu toggle icon
                R.string.app_name, // nav drawer open - description for accessibility
                R.string.app_name // nav drawer close - description for accessibility
                ) {
            public void onDrawerClosed(View view) {
                getActionBar().setTitle(mTitle);
                // calling onPrepareOptionsMenu() to show action bar icons
                invalidateOptionsMenu();
            }

            public void onDrawerOpened(View drawerView) {
                getActionBar().setTitle(mDrawerTitle);
                // calling onPrepareOptionsMenu() to hide action bar icons
                invalidateOptionsMenu();
            }
        };
        mDrawerLayout.setDrawerListener(mDrawerToggle);

        if (savedInstanceState == null) {
            // on first time display view for first nav item
            displayView(0);
        }
    }

    /**
     * Slide menu item click listener
     * */
    private class SlideMenuClickListener implements
    ListView.OnItemClickListener {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position,
                long id) {
            // display view for selected nav drawer item
            displayView(position);
            setNavDrawerItemNormal();
            title=(TextView) view.findViewById(R.id.title);
            title.setTextColor(getApplicationContext().getResources().getColor(R.color.red));

        }
    }


    public void setNavDrawerItemNormal()
    {
        for (int i=0; i< mDrawerList.getChildCount(); i++)
        {
            View v = mDrawerList.getChildAt(i);
            TextView txtview = ((TextView) v.findViewById(R.id.title));
            txtview.setTextColor(getApplicationContext().getResources().getColor(R.color.black));
        }
    }

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

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // toggle nav drawer on selecting action bar app icon/title
        if (mDrawerToggle.onOptionsItemSelected(item)) {
            return true;
        }
        // Handle action bar actions click
        switch (item.getItemId()) {
        case R.id.action_settings:
            return true;
        default:
            return super.onOptionsItemSelected(item);
        }
    }

    /* *
     * Called when invalidateOptionsMenu() is triggered
     */
    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        // if nav drawer is opened, hide the action items
        boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
        menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
        return super.onPrepareOptionsMenu(menu);
    }

    /**
     * Diplaying fragment view for selected nav drawer list item
     * */
    private void displayView(int position) {
        // update the main content by replacing fragments
        Fragment fragment = null;
        switch (position) {
        case 0:
            fragment = new HomeFragment();
            break;
        case 1:
            fragment = new FragmentOne();
            break;
        case 2:
            fragment = new FragmentTwo();
            break;
        case 3:
            fragment = new FragmentThree();
            break;
        case 4:
            fragment = new FragmentFour();
            break;
        case 5:
            fragment = new FragmentFive();
            break;

        default:
            break;
        }

        if (fragment != null) {
            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);
            mDrawerList.setSelection(position);
            setTitle(navMenuTitles[position]);
            mDrawerLayout.closeDrawer(mDrawerList);
        } else {
            // error in creating fragment
            Log.e("MainActivity", "Error in creating fragment");
        }
    }




    @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);
    }

}

public class NavDrawerListAdapter extends BaseAdapter {

    private Context context;
    private ArrayList<NavDrawerItem> navDrawerItems;

    public NavDrawerListAdapter(Context context, ArrayList<NavDrawerItem> navDrawerItems){
        this.context = context;
        this.navDrawerItems = navDrawerItems;
    }

    @Override
    public int getCount() {
        return navDrawerItems.size();
    }

    @Override
    public Object getItem(int position) {       
        return navDrawerItems.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        if (convertView == null) {
            LayoutInflater mInflater = (LayoutInflater)
                    context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
            convertView = mInflater.inflate(R.layout.drawer_list_item, null);
        }

        ImageView imgIcon = (ImageView) convertView.findViewById(R.id.icon);
        TextView txtTitle = (TextView) convertView.findViewById(R.id.title);

        if (position == 0) 
        { 
            txtTitle.setTextColor(context.getResources().getColor(R.color.red));
        }

        imgIcon.setImageResource(navDrawerItems.get(position).getIcon());        
        txtTitle.setText(navDrawerItems.get(position).getTitle());


        return convertView;
    }

}

公共类MainActivity扩展活动{
私人抽屉布局mDrawerLayout；
私有网格视图mDrawerList；
私有操作bardrawertoggle mDrawerToggle；
//导航抽屉标题
私有字符序列mDrawerTitle；
//用于存储应用程序标题
私有字符序列mTitle；
//幻灯片菜单项
私有字符串[]navMenuTitles；
专用型雷达导航仪；
私人ArrayList NavWrites；
专用导航适配器；
私有文本视图标题；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
mTitle=mDrawerTitle=getTitle（）；
//加载幻灯片菜单项
navMenuTitles=getResources（）.getStringArray（R.array.nav\u抽屉\u项目）；
//参考资料中的导航抽屉图标
navMenuIcons=getResources（）
.obtainTypedArray（R.array.nav_drawer_图标）；
mDrawerLayout=（抽屉布局）findViewById（R.id.抽屉布局）；
mDrawerList=（GridView）findViewById（R.id.list\u slidermenu）；
navDrawerItems=新的ArrayList（）；
//将导航抽屉项添加到阵列
//家
添加（新的NavDrawerItem（navMenuTitles[0]，navMenuIcons.getResourceId（0，-1））；
//找人
添加（新的NavDrawerItem（navMenuTitles[1]，navMenuIcons.getResourceId（1，-1））；
//照片
添加（新的NavDrawerItem（navMenuTitles[2]，navMenuIcons.getResourceId（2，-1））；
//社区，将在此处添加一个计数器
添加（新的NavDrawerItem（navMenuTitles[3]，navMenuIcons.getResourceId（3，-1），true，“22”）；
//页数
add（新的NavDrawerItem（navMenuTitles[4]，navMenuIcons.getResourceId（4，-1））；
//什么是热的，我们将在这里加一个计数器
add（新的NavDrawerItem（navMenuTitles[5]，navMenuIcons.getResourceId（5，-1），true，“50+”））；
//回收类型化数组
navMenuIcons.recycle（）；
setOnItemClickListener（新的SlideMenuClickListener（））；
//设置导航抽屉列表适配器
适配器=新的NavDroperListAdapter（getApplicationContext（），
纳维特姆斯）；
mDrawerList.setAdapter（适配器）；
//启用操作栏应用程序图标并将其作为切换按钮
getActionBar（）.setDisplayHomeAsUpEnabled（true）；
//getActionBar（）.setHomeButtonEnabled（true）；
mDrawerToggle=新操作BarDrawerToggle（此，mDrawerLayout，
R.drawable.ic_抽屉，//导航菜单切换图标
R.string.app_name，//导航抽屉打开-可访问性说明
R.string.app_name//nav抽屉关闭-可访问性说明
) {
公共无效onDrawerClosed（视图）{
getActionBar（）.setTitle（mTitle）；
//调用onPrepareOptions菜单（）以显示操作栏图标
无效操作菜单（）；
}
打开图纸上的公共空白（视图抽屉视图）{
getActionBar（）.setTitle（mDrawerTitle）；
//调用onPrepareOptions菜单（）隐藏操作栏图标
无效操作菜单（）；
}
};
mDrawerLayout.setDrawerListener（mDrawerToggle）；
如果（savedInstanceState==null）{
//第一个导航项目的首次显示视图
显示视图（0）；
}
}
/**
*幻灯片菜单项单击“侦听器”
* */
私有类SlideMenuClickListener实现
ListView.com侦听器{
@凌驾
public void onItemClick（AdapterView父视图、视图、整型位置、，
长id）{
//所选导航抽屉项目的显示视图
显示视图（位置）；
setNavDrawerItemNormal（）；
title=（TextView）view.findViewById（R.id.title）；
title.setTextColor（getApplicationContext（）.getResources（）.getColor（R.color.red））；
}
}
public void setNavDrawerItemNormal（）
{
for（int i=0；i<android.support.v4.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <!-- The main content view -->
    <FrameLayout
        android:id="@+id/content_frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
    <!-- The navigation drawer -->
    <GridView android:id="@+id/list_slidermenu"
              android:layout_width="240dp"
              android:layout_height="match_parent"
              android:layout_gravity="start"
              android:choiceMode="singleChoice"
              android:divider="@android:color/transparent"
              android:dividerHeight="0dp"
              android:background="#111"/>
</android.support.v4.widget.DrawerLayout>

public class MainActivity extends ActionBarActivity {

    private static final String TAG = "MainActivity";
    private DrawerLayout mDrawerLayout;
    private GridView mDrawerList;
    private ActionBarDrawerToggle mDrawerToggle;

    // nav drawer title
    private CharSequence mDrawerTitle;

    // used to store app title
    private CharSequence mTitle;

    // slide menu items
    private String[] navMenuTitles;
    private TypedArray navMenuIcons;

    private ArrayList<NavDrawerItem> navDrawerItems;
    private NavDrawerListAdapter adapter;

    private TextView title;

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

        mTitle = mDrawerTitle = getTitle();

        // load slide menu items
        navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items);

        // nav drawer icons from resources
        navMenuIcons = getResources()
                .obtainTypedArray(R.array.nav_drawer_icons);

        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        mDrawerList = (GridView) findViewById(R.id.list_slidermenu);

        navDrawerItems = new ArrayList<NavDrawerItem>();

        // Recycle the typed array
        navMenuIcons.recycle();

        mDrawerList.setItemChecked(0, true); // NOTE: Set 0 item as checked!
        mDrawerList.setOnItemClickListener(new SlideMenuClickListener());

        // setting the nav drawer list adapter
        adapter = new NavDrawerListAdapter(getApplicationContext(), navDrawerItems);
        mDrawerList.setAdapter(adapter);

        // enabling action bar app icon and behaving it as toggle button
        getActionBar().setDisplayHomeAsUpEnabled(true);
        //getActionBar().setHomeButtonEnabled(true);

        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
                android.R.drawable.ic_input_delete, //nav menu toggle icon
                R.string.app_name, // nav drawer open - description for accessibility
                R.string.app_name // nav drawer close - description for accessibility
        ) {
            public void onDrawerClosed(View view) {
                getActionBar().setTitle(mTitle);
                // calling onPrepareOptionsMenu() to show action bar icons
                invalidateOptionsMenu();
            }

            public void onDrawerOpened(View drawerView) {
                getActionBar().setTitle(mDrawerTitle);
                // calling onPrepareOptionsMenu() to hide action bar icons
                invalidateOptionsMenu();
            }
        };
        mDrawerLayout.setDrawerListener(mDrawerToggle);

        if (savedInstanceState == null) {
            // on first time display view for first nav item
            displayView(0);
        }
    }

    /**
     * Slide menu item click listener
     * */
    private class SlideMenuClickListener implements ListView.OnItemClickListener {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position,
                                long id) {
            displayView(position);
            // NOTE: new item is checked now
            mDrawerList.setItemChecked(position, true);
        }
    }

    ...
}

public class NavDrawerListAdapter extends BaseAdapter {

    private Context context;
    private ArrayList<NavDrawerItem> navDrawerItems;

    public NavDrawerListAdapter(Context context, ArrayList<NavDrawerItem> navDrawerItems){
        this.context = context;
        this.navDrawerItems = navDrawerItems;
    }

    @Override
    public int getCount() {
        return navDrawerItems.size();
    }

    @Override
    public Object getItem(int position) {
        return navDrawerItems.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        if (convertView == null) {
            LayoutInflater mInflater = (LayoutInflater)
                    context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
            convertView = mInflater.inflate(R.layout.drawer_list_item, null);
        }

        // TODO: Here ViewHolder pattern can be used or
        ImageView imgIcon = (ImageView) convertView.findViewById(R.id.icon);
        TextView txtTitle = (TextView) convertView.findViewById(R.id.title);

        // NOTE: check which item is Checked an set corresponding text color
        if (((GridView)parent).isItemChecked(position)) {
            txtTitle.setTextColor(context.getResources().getColor(R.color.red));
        } else {
            txtTitle.setTextColor(context.getResources().getColor(R.color.black));
        }

        imgIcon.setImageResource(navDrawerItems.get(position).getIcon());
        txtTitle.setText(navDrawerItems.get(position).getTitle());


        return convertView;
    }
}

    // NOTE: check which item is Checked an set corresponding text color
    if (((GridView)parent).isItemChecked(position)) {
        //txtTitle.setTextColor(context.getResources().getColor(R.color.red));
        txtTitle.setTextColor(context.getResources().getColorStateList(R.color.red_selector));
    } else {
        //txtTitle.setTextColor(context.getResources().getColor(R.color.black));
        txtTitle.setTextColor(context.getResources().getColorStateList(R.color.black_selector));
    }

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true" android:color="@color/red"/>
    <item android:color="@color/black"/>
</selector>