本文介绍了更改箭头图标在抽屉菜单？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我使用Android的工作室。我创建了一个抽屉式导航栏的新活动。但是，它表示的＆lt; - 代替汉堡包图标
如何修改我的code键更改＆LT; - 对汉堡图标????
进口android.app.Activity;
进口android.support.v7.app.ActionBarActivity;
进口android.support.v7.app.ActionBar;
进口android.support.v4.app.Fragment;
进口android.support.v4.app.FragmentManager;
进口android.content.Context;
进口android.os.Build;
进口android.os.Bundle;
进口android.view.Gravity;
进口android.view.LayoutInflater;
进口android.view.Menu;
进口android.view.MenuItem;
进口android.view.View;
进口android.view.ViewGroup;
进口android.support.v4.widget.DrawerLayout;
进口android.widget.ArrayAdapter;
进口android.widget.TextView;
公共类MainActivity扩展ActionBarActivity
实现NavigationDrawerFragment.NavigationDrawerCallbacks {
/ **
*片段管理导航抽屉的行为，相互作用和presentation。
* /
私人NavigationDrawerFragment mNavigationDrawerFragment;
/ **
*用于存储最后屏幕标题。对于使用{@link #restoreActionBar（）}。
* /
私人的CharSequence mTitle;
@覆盖
保护无效的onCreate（包savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.activity_main）;
mNavigationDrawerFragment =（NavigationDrawerFragment）
。getSupportFragmentManager（）findFragmentById（R.id.navigation_drawer）;
mTitle =的getTitle（）;
//设置抽屉。
mNavigationDrawerFragment.setUp（
R.id.navigation_drawer，
（DrawerLayout）findViewById（R.id.drawer_layout））;
}
@覆盖
公共无效onNavigationDrawerItemSelected（INT位置）{
//更新替换片段的主要内容
FragmentManager fragmentManager = getSupportFragmentManager（）;
fragmentManager.beginTransaction（）
.replace（R.id.container，PlaceholderFragment.newInstance（位置+ 1））
。承诺（）;
}
公共无效onSectionAttached（INT编号）{
开关（数）{
情况1：
mTitle =的getString（R.string.title_section1）;
打破;
案例2：
mTitle =的getString（R.string.title_section2）;
打破;
案例3：
mTitle =的getString（R.string.title_section3）;
打破;
}
}
公共无效restoreActionBar（）{
动作条动作条= getSupportActionBar（）;
actionBar.setNavigationMode（ActionBar.NAVIGATION_MODE_STANDARD）;
actionBar.setLogo（R.drawable.ic_drawer）;
actionBar.setDisplayShowTitleEnabled（真正的）;
actionBar.setTitle（mTitle）;
}
@覆盖
公共布尔onCreateOptionsMenu（功能菜单）{
如果（！mNavigationDrawerFragment.isDrawerOpen（））{
//只显示有关该屏幕中的操作栏项目
//如果抽屉没有显示。否则，让抽屉
//决定如何操作栏中显示。
。getMenuInflater（）膨胀（R.menu.main，菜单）;
restoreActionBar（）;
返回true;
}
返回super.onCreateOptionsMenu（菜单）;
}
@覆盖
公共布尔onOptionsItemSelected（菜单项项）{
//处理动作栏项目点击这里。将操作栏
//自动在主/向上按钮操作的点击，只要
//你在AndroidManifest.xml中指定一个父活动。
INT的id = item.getItemId（）;
// noinspection SimplifiableIfStatement
如果（ID == R.id.action_settings）{
返回true;
}
返回super.onOptionsItemSelected（项目）;
}
/ **
*包含一个简单的视图的占位符片段。
* /
公共静态类PlaceholderFragment扩展片段{
/ **
*片段参数重新presenting本章节号
* 分段。
* /
私有静态最后弦乐ARG_SECTION_NUMBER =section_number标;
/ **
*对于给定的部分中返回此片段的一个新实例
* 数。
* /
公共静态PlaceholderFragment的newInstance（INT sectionNumber）{
PlaceholderFragment片段=新PlaceholderFragment（）;
捆绑的args =新包（）;
args.putInt（ARG_SECTION_NUMBER，sectionNumber）;
fragment.setArguments（参数）;
返回片段;
}
公共PlaceholderFragment（）{
}
@覆盖
公共查看onCreateView（LayoutInflater充气，容器的ViewGroup，
捆绑savedInstanceState）{
查看rootView = inflater.inflate（R.layout.fragment_main，集装箱，假）;
返回rootView;
}
@覆盖
公共无效onAttach（活动活动）{
super.onAttach（活动）;
（（MainActivity）活动）.onSectionAttached（
。getArguments（）调用getInt（ARG_SECTION_NUMBER））;
}
}
}
包com.mw.alahdal.amjad.menudrawer;
进口android.support.v7.app.ActionBarActivity;
进口android.app.Activity;
进口android.support.v7.app.ActionBar;
进口android.support.v4.app.Fragment;
进口android.support.v4.app.ActionBarDrawerToggle;
进口android.support.v4.view.GravityCompat;
进口android.support.v4.widget.DrawerLayout;
进口android.content.Shared preferences;
进口android.content.res.Configuration;
进口android.os.Bundle;
。进口的Android preference preferenceManager。
进口android.view.LayoutInflater;
进口android.view.Menu;
进口android.view.MenuInflater;
进口android.view.MenuItem;
进口android.view.View;
进口android.view.ViewGroup;
进口android.widget.AdapterView;
进口android.widget.ArrayAdapter;
进口android.widget.ListView;
进口android.widget.Toast;
公共类NavigationDrawerFragment扩展片段{
/ **
*请记住所选项目的位置。
* /
私有静态最后弦乐STATE_SELECTED_POSITION =selected_navigation_drawer_position;
/ **
*根据设计准则，应手动显示上推出了抽屉里，直到用户
*扩展它。这种共享preference跟踪此。
* /
私有静态最后弦乐preF_USER_LEARNED_DRAWER =navigation_drawer_learned;
/ **
*一个指向当前回调实例（活动）。
* /
私人NavigationDrawerCallbacks mCallbacks;
/ **
*是关系操作栏的抽屉式导航辅助部件。
* /
私人ActionBarDrawerToggle mDrawerToggle;
私人DrawerLayout mDrawerLayout;
私人的ListView mDrawerListView;
私人查看mFragmentContainerView;
私人诠释mCurrentSelectedPosition = 0;
私人布尔mFromSavedInstanceState;
私人布尔mUserLearnedDrawer;
公共NavigationDrawerFragment（）{
}
@覆盖
公共无效的onCreate（包savedInstanceState）{
super.onCreate（savedInstanceState）;
//读取在指示用户是否已经证实的认识
// 抽屉。见preF_USER_LEARNED_DRAWER了解详细信息。
共享preferences SP = preferenceManager.getDefaultShared preferences（getActivity（））;
mUserLearnedDrawer = sp.getBoolean（preF_USER_LEARNED_DRAWER，假）;
如果（savedInstanceState！= NULL）{
mCurrentSelectedPosition = savedInstanceState.getInt（STATE_SELECTED_POSITION）;
mFromSavedInstanceState = TRUE;
}
//选择任默认项（0）或最后选择的项目。
选择信息（mCurrentSelectedPosition）;
}
@覆盖
公共无效onActivityCreated（包savedInstanceState）{
super.onActivityCreated（savedInstanceState）;
//表明该片段想影响的一组操作栏中的行动。
setHasOptionsMenu（真正的）;
}
@覆盖
公共查看onCreateView（LayoutInflater充气，容器的ViewGroup，
捆绑savedInstanceState）{
mDrawerListView =（ListView控件）inflater.inflate（
R.layout.fragment_navigation_drawer，集装箱，假）;
mDrawerListView.setOnItemClickListener（新AdapterView.OnItemClickListener（）{
@覆盖
公共无效onItemClick（适配器视图＆LT;＆GT;母公司视图中查看，INT位置，长的id）{
选择信息（位置）;
}
}）;
mDrawerListView.setAdapter（新ArrayAdapter＆LT;字符串＆GT;（
getActionBar（）。getThemedContext（），
android.R.layout.simple_list_item_activated_1，
android.R.id.text1，
新的String [] {
的getString（R.string.title_section1）
的getString（R.string.title_section2）
的getString（R.string.title_section3）
}））;
mDrawerListView.setItemChecked（mCurrentSelectedPosition，真正的）;
返回mDrawerListView;
}
公共布尔isDrawerOpen（）{
返回mDrawerLayout = NULL和放大器;！＆安培; mDrawerLayout.isDrawerOpen（mFragmentContainerView）;
}
/ **
*该片段的用户必须调用这个方法来设置导航抽屉相互作用。
*
*参数fragmentId Android的：ID此片段在其活动的布局。
*参数drawerLayout包含该片段的UI的DrawerLayout。
* /
公共无效设置（INT fragmentId，DrawerLayout drawerLayout）{
mFragmentContainerView = getActivity（）findViewById（fragmentId）。
mDrawerLayout = drawerLayout;
抽屉打开时//设置自定义影子覆盖的主要内容
mDrawerLayout.setDrawerShadow（R.drawable.drawer_shadow，GravityCompat.START）;
//设置抽屉的列表视图项，然后单击监听器
动作条动作条= getActionBar（）;
actionBar.setDisplayHomeAsUpEnabled（真正的）;
actionBar.setHomeButtonEnabled（真正的）;
// ActionBarDrawerToggle联系在一起的适当交互
//导航抽屉和操作栏中的应用程序图标之间。
mDrawerToggle =新ActionBarDrawerToggle（
getActivity（）/ *主机活动* /
mDrawerLayout，/ * DrawerLayout对象* /
R.drawable.ic_drawer，/ *导航抽屉图像，以取代上插入符* /
R.string.navigation_drawer_open，/ *开放抽屉说明访问* /
R.string.navigation_drawer_close / *关闭抽屉说明访问* /
）{
@覆盖
公共无效onDrawerClosed（查看drawerView）{
super.onDrawerClosed（drawerView）;
如果（！isAdded（））{
返回;
}
。getActivity（）supportInvalidateOptionsMenu（）;在prepareOptionsMenu //调用（）
}
@覆盖
公共无效onDrawerOpened（查看drawerView）{
super.onDrawerOpened（drawerView）;
如果（！isAdded（））{
返回;
}
如果（！mUserLearnedDrawer）{
//用户手动打开抽屉;该标志存储prevent自动显示
//在未来导航自动抽屉。
mUserLearnedDrawer = TRUE;
共享preferences SP = preferenceManager
.getDefaultShared preferences（getActivity（））;
。sp.edit（）putBoolean（preF_USER_LEARNED_DRAWER，真）。适用（）;
}
。getActivity（）supportInvalidateOptionsMenu（）;在prepareOptionsMenu //调用（）
}
};
//如果用户没有学习关于抽屉，打开它，给他们介绍的抽屉里，
//每导航抽屉式设计的指导方针。
如果（mUserLearnedDrawer＆安培;！＆安培;！mFromSavedInstanceState）{
mDrawerLayout.openDrawer（mFragmentContainerView）;
}
//推迟code依赖于恢复previous实例状态。
mDrawerLayout.post（新的Runnable（）{
@覆盖
公共无效的run（）{
mDrawerToggle.syncState（）;
}
}）;
mDrawerLayout.setDrawerListener（mDrawerToggle）;
}
私人无效选择信息（INT位置）{
mCurrentSelectedPosition =位置;
如果（mDrawerListView！= NULL）{
mDrawerListView.setItemChecked（位置，真正的）;
}
如果（mDrawerLayout！= NULL）{
mDrawerLayout.closeDrawer（mFragmentContainerView）;
}
如果（mCallbacks！= NULL）{
mCallbacks.onNavigationDrawerItemSelected（位置）;
}
}
@覆盖
公共无效onAttach（活动活动）{
super.onAttach（活动）;
尝试 {
mCallbacks =（NavigationDrawerCallbacks）的活动;
}赶上（ClassCastException异常E）{
抛出新的ClassCastException异常（活动必须实现NavigationDrawerCallbacks。）;
}
}
@覆盖
公共无效onDetach（）{
super.onDetach（）;
mCallbacks = NULL;
}
@覆盖
公共无效的onSaveInstanceState（包outState）{
super.onSaveInstanceState（outState）;
outState.putInt（STATE_SELECTED_POSITION，mCurrentSelectedPosition）;
}
@覆盖
公共无效onConfigurationChanged（配置NEWCONFIG）{
super.onConfigurationChanged（NEWCONFIG）;
//提出了新的配置抽屉切换组件。
mDrawerToggle.onConfigurationChanged（NEWCONFIG）;
}
@覆盖
公共无效onCreateOptionsMenu（功能菜单，MenuInflater充气）{
//如果抽屉是打开的，显示在操作栏上的全球应用程序的行为。也可以看看
// showGlobalContextActionBar，控制操作栏的左上角区域。
如果（mDrawerLayout =空＆安培;！＆安培; isDrawerOpen（））{
inflater.inflate（R.menu.global，菜单）;
showGlobalContextActionBar（）;
}
super.onCreateOptionsMenu（菜单，充气）;
}
@覆盖
公共布尔onOptionsItemSelected（菜单项项）{
如果（mDrawerToggle.onOptionsItemSelected（项目））{
返回true;
}
如果（item.getItemId（）== R.id.action_example）{
Toast.makeText（getActivity（），示例的动作。，Toast.LENGTH_SHORT）.show（）;
返回true;
}
返回super.onOptionsItemSelected（项目）;
}
/ **
*每导航抽屉式设计的指导方针，更新操作栏，显示了全球应用程序
*语境，而不仅仅是什么是当前屏幕。
* /
私人无效showGlobalContextActionBar（）{
动作条动作条= getActionBar（）;
actionBar.setDisplayShowTitleEnabled（真正的）;
actionBar.setNavigationMode（ActionBar.NAVIGATION_MODE_STANDARD）;
actionBar.setTitle（R.string.app_name）;
}
私有动作条getActionBar（）{
返程（（ActionBarActivity）getActivity（））getSupportActionBar（）。
}
/ **
*回调，使用此片段的所有活动都必须实现的接口。
* /
公共静态接口NavigationDrawerCallbacks {
/ **
*在导航抽屉一个项目被选中时调用。
* /
无效onNavigationDrawerItemSelected（INT位）;
}
}
解决方案
-
使用android.support.v7.app.ActionBarDrawerToggle代替android.support.v4.app.ActionBarDrawerToggle
-
您会得到一个错误的ActionBarDrawerToggle的构造。使用构造ActionBarDrawerToggle V7有4个参数。
-
另外添加到您的styles.xml
＆LT;样式名称=AppTheme父=Theme.AppCompat.Light＆GT;＆LT;项目名称=drawerArrowStyle＆GT; @风格/ DrawerArrowStyle＆LT; /项目＆GT;＆LT; /风格＆GT;＆LT;样式名称=DrawerArrowStyle父=Widget.AppCompat.DrawerArrowToggle＆GT;＆LT;项目名称=spinBars＆GT;真＆LT; /项目＆GT;＆LT; /风格＆GT;
4.适用这个主题来在清单中的应用程序。希望这有助于。
I am using Android Studio. And I created a new activity with a navigation drawer.But, It's showing the <- instead of the Hamburger Icon.
How can I modify my code to change <- to the Hamburger Icon????
import android.app.Activity;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.content.Context;
import android.os.Build;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.support.v4.widget.DrawerLayout;
import android.widget.ArrayAdapter;
import android.widget.TextView;
public class MainActivity extends ActionBarActivity
implements NavigationDrawerFragment.NavigationDrawerCallbacks {
/**
* Fragment managing the behaviors, interactions and presentation of the navigation drawer.
*/
private NavigationDrawerFragment mNavigationDrawerFragment;
/**
* Used to store the last screen title. For use in {@link #restoreActionBar()}.
*/
private CharSequence mTitle;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mNavigationDrawerFragment = (NavigationDrawerFragment)
getSupportFragmentManager().findFragmentById(R.id.navigation_drawer);
mTitle = getTitle();
// Set up the drawer.
mNavigationDrawerFragment.setUp(
R.id.navigation_drawer,
(DrawerLayout) findViewById(R.id.drawer_layout));
}
@Override
public void onNavigationDrawerItemSelected(int position) {
// update the main content by replacing fragments
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.container, PlaceholderFragment.newInstance(position + 1))
.commit();
}
public void onSectionAttached(int number) {
switch (number) {
case 1:
mTitle = getString(R.string.title_section1);
break;
case 2:
mTitle = getString(R.string.title_section2);
break;
case 3:
mTitle = getString(R.string.title_section3);
break;
}
}
public void restoreActionBar() {
ActionBar actionBar = getSupportActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
actionBar.setLogo(R.drawable.ic_drawer);
actionBar.setDisplayShowTitleEnabled(true);
actionBar.setTitle(mTitle);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
if (!mNavigationDrawerFragment.isDrawerOpen()) {
// Only show items in the action bar relevant to this screen
// if the drawer is not showing. Otherwise, let the drawer
// decide what to show in the action bar.
getMenuInflater().inflate(R.menu.main, menu);
restoreActionBar();
return true;
}
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
private static final String ARG_SECTION_NUMBER = "section_number";
/**
* Returns a new instance of this fragment for the given section
* number.
*/
public static PlaceholderFragment newInstance(int sectionNumber) {
PlaceholderFragment fragment = new PlaceholderFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
return rootView;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
((MainActivity) activity).onSectionAttached(
getArguments().getInt(ARG_SECTION_NUMBER));
}
}
}
package com.mw.alahdal.amjad.menudrawer;
import android.support.v7.app.ActionBarActivity;
import android.app.Activity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
public class NavigationDrawerFragment extends Fragment {
/**
* Remember the position of the selected item.
*/
private static final String STATE_SELECTED_POSITION = "selected_navigation_drawer_position";
/**
* Per the design guidelines, you should show the drawer on launch until the user manually
* expands it. This shared preference tracks this.
*/
private static final String PREF_USER_LEARNED_DRAWER = "navigation_drawer_learned";
/**
* A pointer to the current callbacks instance (the Activity).
*/
private NavigationDrawerCallbacks mCallbacks;
/**
* Helper component that ties the action bar to the navigation drawer.
*/
private ActionBarDrawerToggle mDrawerToggle;
private DrawerLayout mDrawerLayout;
private ListView mDrawerListView;
private View mFragmentContainerView;
private int mCurrentSelectedPosition = 0;
private boolean mFromSavedInstanceState;
private boolean mUserLearnedDrawer;
public NavigationDrawerFragment() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Read in the flag indicating whether or not the user has demonstrated awareness of the
// drawer. See PREF_USER_LEARNED_DRAWER for details.
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity());
mUserLearnedDrawer = sp.getBoolean(PREF_USER_LEARNED_DRAWER, false);
if (savedInstanceState != null) {
mCurrentSelectedPosition = savedInstanceState.getInt(STATE_SELECTED_POSITION);
mFromSavedInstanceState = true;
}
// Select either the default item (0) or the last selected item.
selectItem(mCurrentSelectedPosition);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
// Indicate that this fragment would like to influence the set of actions in the action bar.
setHasOptionsMenu(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
mDrawerListView = (ListView) inflater.inflate(
R.layout.fragment_navigation_drawer, container, false);
mDrawerListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
selectItem(position);
}
});
mDrawerListView.setAdapter(new ArrayAdapter<String>(
getActionBar().getThemedContext(),
android.R.layout.simple_list_item_activated_1,
android.R.id.text1,
new String[]{
getString(R.string.title_section1),
getString(R.string.title_section2),
getString(R.string.title_section3),
}));
mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);
return mDrawerListView;
}
public boolean isDrawerOpen() {
return mDrawerLayout != null && mDrawerLayout.isDrawerOpen(mFragmentContainerView);
}
/**
* Users of this fragment must call this method to set up the navigation drawer interactions.
*
* @param fragmentId The android:id of this fragment in its activity's layout.
* @param drawerLayout The DrawerLayout containing this fragment's UI.
*/
public void setUp(int fragmentId, DrawerLayout drawerLayout) {
mFragmentContainerView = getActivity().findViewById(fragmentId);
mDrawerLayout = drawerLayout;
// 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
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setHomeButtonEnabled(true);
// ActionBarDrawerToggle ties together the the proper interactions
// between the navigation drawer and the action bar app icon.
mDrawerToggle = new ActionBarDrawerToggle(
getActivity(), /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */
R.string.navigation_drawer_open, /* "open drawer" description for accessibility */
R.string.navigation_drawer_close /* "close drawer" description for accessibility */
) {
@Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
if (!isAdded()) {
return;
}
getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu()
}
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
if (!isAdded()) {
return;
}
if (!mUserLearnedDrawer) {
// The user manually opened the drawer; store this flag to prevent auto-showing
// the navigation drawer automatically in the future.
mUserLearnedDrawer = true;
SharedPreferences sp = PreferenceManager
.getDefaultSharedPreferences(getActivity());
sp.edit().putBoolean(PREF_USER_LEARNED_DRAWER, true).apply();
}
getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu()
}
};
// If the user hasn't 'learned' about the drawer, open it to introduce them to the drawer,
// per the navigation drawer design guidelines.
if (!mUserLearnedDrawer && !mFromSavedInstanceState) {
mDrawerLayout.openDrawer(mFragmentContainerView);
}
// Defer code dependent on restoration of previous instance state.
mDrawerLayout.post(new Runnable() {
@Override
public void run() {
mDrawerToggle.syncState();
}
});
mDrawerLayout.setDrawerListener(mDrawerToggle);
}
private void selectItem(int position) {
mCurrentSelectedPosition = position;
if (mDrawerListView != null) {
mDrawerListView.setItemChecked(position, true);
}
if (mDrawerLayout != null) {
mDrawerLayout.closeDrawer(mFragmentContainerView);
}
if (mCallbacks != null) {
mCallbacks.onNavigationDrawerItemSelected(position);
}
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
mCallbacks = (NavigationDrawerCallbacks) activity;
} catch (ClassCastException e) {
throw new ClassCastException("Activity must implement NavigationDrawerCallbacks.");
}
}
@Override
public void onDetach() {
super.onDetach();
mCallbacks = null;
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt(STATE_SELECTED_POSITION, mCurrentSelectedPosition);
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Forward the new configuration the drawer toggle component.
mDrawerToggle.onConfigurationChanged(newConfig);
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
// If the drawer is open, show the global app actions in the action bar. See also
// showGlobalContextActionBar, which controls the top-left area of the action bar.
if (mDrawerLayout != null && isDrawerOpen()) {
inflater.inflate(R.menu.global, menu);
showGlobalContextActionBar();
}
super.onCreateOptionsMenu(menu, inflater);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
if (item.getItemId() == R.id.action_example) {
Toast.makeText(getActivity(), "Example action.", Toast.LENGTH_SHORT).show();
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* Per the navigation drawer design guidelines, updates the action bar to show the global app
* 'context', rather than just what's in the current screen.
*/
private void showGlobalContextActionBar() {
ActionBar actionBar = getActionBar();
actionBar.setDisplayShowTitleEnabled(true);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
actionBar.setTitle(R.string.app_name);
}
private ActionBar getActionBar() {
return ((ActionBarActivity) getActivity()).getSupportActionBar();
}
/**
* Callbacks interface that all activities using this fragment must implement.
*/
public static interface NavigationDrawerCallbacks {
/**
* Called when an item in the navigation drawer is selected.
*/
void onNavigationDrawerItemSelected(int position);
}
}
解决方案
use android.support.v7.app.ActionBarDrawerToggle instead ofandroid.support.v4.app.ActionBarDrawerToggle
you will get an error for the constructor of ActionBarDrawerToggle. Use the constructor for ActionBarDrawerToggle v7 with 4 parameters.
Also add this to your styles.xml
<style name="AppTheme" parent="Theme.AppCompat.Light"><item name="drawerArrowStyle">@style/DrawerArrowStyle</item></style><style name="DrawerArrowStyle" parent="Widget.AppCompat.DrawerArrowToggle"><item name="spinBars">true</item></style>
4.Apply this theme to your application in the manifest.Hope this helps.
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