Android 导航抽屉项目未注册单击事件
我正在努力让导航抽屉项目注册并开始新活动。 抽屉可以正常打开并正确显示,但当我单击列表中的项目时,什么也没有发生。 这是我从谷歌教程中获得的代码Android 导航抽屉项目未注册单击事件,android,android-listview,onclick,navigation-drawer,Android,Android Listview,Onclick,Navigation Drawer,我正在努力让导航抽屉项目注册并开始新活动。 抽屉可以正常打开并正确显示,但当我单击列表中的项目时,什么也没有发生。 这是我从谷歌教程中获得的代码 mTitle = mDrawerTitle = getTitle(); mTitles = getResources().getStringArray(R.array.menu_items); mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_la
mTitle = mDrawerTitle = getTitle();
mTitles = getResources().getStringArray(R.array.menu_items);
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.drawer_list_item, mTitles));
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_drawer, /* nav drawer image to replace 'Up' caret */
R.string.drawer_open, /* "open drawer" description for accessibility */
R.string.drawer_close /* "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.main, 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_websearch).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;
}
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) {
selectItem(position);
}
}
private void selectItem(int position) {
switch (position) {
case 1:
new DataTask(MainActivity.this).execute();
MainActivity.this.finish();//Set this Activity to Finish so no loop back
Intent intent=new Intent(MainActivity.this,SplashScreen.class);
startActivity(intent);
break;
case 2:
// ft.replace(R.id.content_frame, new SecondFragment());
// setTitle("Second");
break;
case 3:
// ft.replace(R.id.content_frame, new ThirdFragment());
// setTitle("Third");
break;
default:
break;
}
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
//setTitle(mTitles[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);
}
/**
* Fragment that appears in the "content_frame", shows a planet
*/
public static class PlanetFragment extends Fragment {
public static final String ARG_PLANET_NUMBER = "planet_number";
public PlanetFragment() {
// Empty constructor required for fragment subclasses
}
// @Override
/* public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_planet, container, false);
int i = getArguments().getInt(ARG_PLANET_NUMBER);
String planet = getResources().getStringArray(R.array.planets_array)[i];
int imageId = getResources().getIdentifier(planet.toLowerCase(Locale.getDefault()),
"drawable", getActivity().getPackageName());
((ImageView) rootView.findViewById(R.id.image)).setImageResource(imageId);
getActivity().setTitle(planet);
return rootView; */
}
mTitle=mDrawerTitle=getTitle();
mTitles=getResources().getStringArray(R.array.menu\u项);
mDrawerLayout=(抽屉布局)findViewById(R.id.抽屉布局);
mDrawerList=(ListView)findViewById(R.id.left\u抽屉);
//设置抽屉打开时覆盖主要内容的自定义阴影
mDrawerLayout.setDrawerShadow(R.drawable.drawer\u shadow,GravityCompat.START);
//使用项目设置抽屉的列表视图,然后单击listener
mDrawerList.setAdapter(新阵列适配器,
R.layout.drawer_list_item,mTitles));
setOnItemClickListener(新的DrawerItemClickListener());
//启用ActionBar应用程序图标作为切换导航抽屉的操作
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
//ActionBarDrawerToggle将适当的交互连接在一起
//在滑动抽屉和操作栏应用程序图标之间
mDrawerToggle=新操作bardrawertoggle(
此,/*主机活动*/
mDrawerLayout,/*抽屉布局对象*/
R.drawable.ic_抽屉,/*导航抽屉图像替换“Up”插入符号*/
R.string.drawer\u open,/*“open drawer”描述,用于辅助功能*/
R.string.drawer\u close/*“close drawer”可访问性说明*/
) {
公共无效onDrawerClosed(视图){
getActionBar().setTitle(mTitle);
InvalidateOptions SMenu();//创建对OnPrepareOptions SMenu()的调用
}
打开图纸上的公共空白(视图抽屉视图){
getActionBar().setTitle(mDrawerTitle);
InvalidateOptions SMenu();//创建对OnPrepareOptions SMenu()的调用
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
//如果(savedInstanceState==null){
选择项目(0);
}
@凌驾
公共布尔onCreateOptions菜单(菜单){
MenuInflater充气机=getMenuInflater();
充气机。充气(右菜单。主菜单,菜单);
返回super.onCreateOptions菜单(菜单);
}
/*调用InvalidateOptions菜单()时调用*/
@凌驾
公共布尔值OnPrepareOptions菜单(菜单){
//如果导航抽屉打开,则隐藏与内容视图相关的操作项
boolean-DrawerLayout=mDrawerLayout.isDrawerOpen(mDrawerList);
//menu.findItem(R.id.action_websearch).setVisible(!drawerropen);
返回super.onPrepareOptions菜单(菜单);
}
@凌驾
公共布尔值onOptionsItemSelected(菜单项项){
//操作栏home/up操作应打开或关闭抽屉。
//ActionBarDrawerToggle会处理好的。
如果(MDRAWERTOGLE.onOptionsItemSelected(项目)){
返回true;
}
返回super.onOptionsItemSelected(项目);
}
/*在导航抽屉中单击ListView的listner*/
私有类DrawerItemClickListener实现ListView.OnItemClickListener{
@凌驾
public void onItemClick(AdapterView父对象、视图、整型位置、长id){
选择项目(位置);
}
}
私有void selectItem(内部位置){
开关(位置){
案例1:
新建DataTask(MainActivity.this).execute();
MainActivity.this.finish();//将此活动设置为finish,这样就不会返回循环
意图=新意图(MainActivity.this,SplashScreen.class);
星触觉(意向);
打破
案例2:
//ft.replace(R.id.content_frame,新的SecondFragment());
//设定名称(“第二”);
打破
案例3:
//ft.replace(R.id.content_框架,新的第三个碎片());
//设定所有权(“第三”);
打破
违约:
打破
}
//更新所选项目和标题,然后关闭抽屉
mDrawerList.setItemChecked(位置,true);
//setTitle(mTitles[位置]);
mDrawerLayout.closeDrawer(mDrawerList);
}
@凌驾
公共无效设置标题(字符序列标题){
mTitle=标题;
getActionBar().setTitle(mTitle);
}
/**
*使用ActionBarDrawerToggle时,必须在
*onPostCreate()和onConfigurationChanged()。。。
*/
@凌驾
后期创建时受保护的空(捆绑包savedInstanceState){
super.onPostCreate(savedInstanceState);
//在onRestoreInstanceState发生后同步切换状态。
mDrawerToggle.syncState();
}
@凌驾
公共无效OnConfiguration已更改(配置newConfig){
super.onConfigurationChanged(newConfig);
//将任何配置更改传递给抽屉toggls
mDrawerToggle.onConfigurationChanged(newConfig);
}
/**
*“内容框架”中出现的片段显示了一颗行星
*/
公共静态类PlanetFragment扩展片段{
公共静态最终字符串ARG\u PLANET\u NUMBER=“PLANET\u NUMBER”;
公共飞机碎片(){
//片段子类需要空构造函数
}
//@覆盖
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
public class MyActivity extends Activity implements ListView.OnItemClickListener {
public void onCreate(Bundle savedInstanceState) {
[...]
mDrawerList = (ListView) findViewById(R.id.left_drawer);
[...]
mDrawerList.setOnItemClickListener(this);
[...]
}
[...]
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
selectItem(position);
}
private void selectItem(int position) {
switch (position) {
case 1:
[...]
startActivity(new Intent(this, SplashScreen.class));
break;
[...]
default:
break;
}
[...]
}
[...]
}
mDrawerList.bringToFront();
mDrawerLayout.requestLayout();
@Override
public void onDrawerOpened(View drawerView) {
}
<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">
<!-- As the main content view, the view below consumes the entire
space available using match_parent in both dimensions. -->
<FrameLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<!-- android:layout_gravity="start" tells DrawerLayout to treat
this as a sliding drawer on the left side for left-to-right
languages and on the right side for right-to-left languages.
The drawer is given a fixed width in dp and extends the full height of
the container. A solid background is used for contrast
with the content view. -->
<ListView
android:id="@+id/left_drawer"
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="#ffff"/>
list.bringToFront();
drawerLayout.requestLayout();