如何在滑动菜单中添加一组新的项目?
问题描述:
我想在滑动菜单中添加另一个块,或者其他任何被调用的项目,但我无法弄清楚要更改第一个代码的内容......在我的滑动菜单中,我有6个项目,但我有4个项目的第一个标题,然后,另一个标题,和另外2个项目..但我无法弄清楚我必须改变我的第一个块代码..非常感谢! !如何在滑动菜单中添加一组新的项目?
这里是我的MainActivity.java:再次
package com.orar.cngcnasaud;
import android.app.Activity;
import android.content.Intent;
import android.content.res.Configuration;
import android.graphics.Color;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.util.Log;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.ListView;
public class MainActivity extends Activity implements OnClickListener {
private ListView mDrawerList;
private DrawerLayout mDrawer;
private CustomActionBarDrawerToggle mDrawerToggle;
private String[] menuItems;
private static final String TAG = "AudioDemo";
private static final String isPlaying = "Media is Playing";
private static final String notPlaying = "Media has stopped Playing";
MediaPlayer player;
Button playerButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_drawer);
player = MediaPlayer.create(this, R.raw.gc);
player.setLooping(false); // Set looping
// Get the button from the view
playerButton = (Button) this.findViewById(R.id.buttonmp);
playerButton.setText(R.string.play_label);
playerButton.setTextColor(Color.WHITE);
playerButton.setOnClickListener((OnClickListener) this);
// enable ActionBar app icon to behave as action to toggle nav drawer
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
mDrawer = (DrawerLayout) findViewById(R.id.drawer_layout);
// set a custom shadow that overlays the main content when the drawer
// opens
mDrawer.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
_initMenu();
mDrawerToggle = new CustomActionBarDrawerToggle(this, mDrawer);
mDrawer.setDrawerListener(mDrawerToggle);
}
public void onClick(View v) {
Log.d(TAG, "onClick: " + v);
if (v.getId() == R.id.buttonmp) {
playPause();
}
}
private void demoPause() {
// TODO Auto-generated method stub
player.pause();
playerButton.setText(R.string.play_label);
Log.d(TAG, notPlaying);
}
private void playPause() {
// TODO Auto-generated method stub
if(player.isPlaying()) {
demoPause();
} else {
demoPlay();
}
}
private void demoPlay() {
// TODO Auto-generated method stub
player.start();
playerButton.setText(R.string.stop_label);
Log.d(TAG, isPlaying);
}
private void _initMenu() {
NsMenuAdapter mAdapter = new NsMenuAdapter(this);
// Add Header
mAdapter.addHeader(R.string.ns_menu_main_header);
// Add first block
menuItems = getResources().getStringArray(
R.array.ns_menu_items);
String[] menuItemsIcon = getResources().getStringArray(
R.array.ns_menu_items_icon);
int res = 0;
for (String item : menuItems) {
int id_title = getResources().getIdentifier(item, "string",
this.getPackageName());
int id_icon = getResources().getIdentifier(menuItemsIcon[res],
"drawable", this.getPackageName());
NsMenuItemModel mItem = new NsMenuItemModel(id_title, id_icon);
if (res==1) mItem.counter=0; //it is just an example...
if (res==3) mItem.counter=0; //it is just an example...
mAdapter.addItem(mItem);
res++;
}
mDrawerList = (ListView) findViewById(R.id.drawer);
if (mDrawerList != null)
mDrawerList.setAdapter(mAdapter);
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
}
@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);
mDrawerToggle.onConfigurationChanged(newConfig);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
/*
* The action bar home/up should open or close the drawer.
* ActionBarDrawerToggle will take care of this.
*/
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
// Handle your other action bar items...
return super.onOptionsItemSelected(item);
}
private class CustomActionBarDrawerToggle extends ActionBarDrawerToggle {
public CustomActionBarDrawerToggle(Activity mActivity,DrawerLayout mDrawerLayout){
super(
mActivity,
mDrawerLayout,
R.drawable.ic_drawer,
R.string.ns_menu_open,
R.string.ns_menu_close);
}
@Override
public void onDrawerClosed(View view) {
getActionBar().setTitle(getString(R.string.ns_menu_close));
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
@Override
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(getString(R.string.ns_menu_open));
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
}
private class DrawerItemClickListener implements ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
mDrawerList.setItemChecked(position, true);
mDrawer.closeDrawer(mDrawerList);
if (position == 1) {
Intent intent = new Intent(MainActivity.this, Istoric.class);
startActivity(intent);
mDrawer.closeDrawers();
}
else if (position == 2) {
Intent intent2 = new Intent(MainActivity.this, Profesori.class);
startActivity(intent2);
mDrawer.closeDrawers();
}
if (position == 3) {
Intent intent3 = new Intent(MainActivity.this, Elevi.class);
startActivity(intent3);
mDrawer.closeDrawers();
}
if (position == 4) {
Intent intent4 = new Intent(MainActivity.this, ShowImageActivity.class);
startActivity(intent4);
mDrawer.closeDrawers();
}
if (position == 5) {
Intent intent5 = new Intent(MainActivity.this, Despre.class);
startActivity(intent5);
mDrawer.closeDrawers();
}
if (position == 6) {
Intent intent6 = new Intent(MainActivity.this, Feedback.class);
startActivity(intent6);
mDrawer.closeDrawers();
}
}
}
}
谢谢!
答
我假设你想实现类似的是在下面的图片的东西:
你将不得不修改列表的适配器(NsMenuAdapter)支持两种视图 - 项目和标题,其中产品可点击和标题只是一种组头。适配器应该获取对象的数组/列表,并且每个对象都应该具有类型属性。这可能会使一些OnItemClickListener
复杂化。
我发布我的那种列表适配器的例子。在我的情况下,我创建了NavigationDrawerItem模型,以保存关于项目类型,项目'可点击性'的信息以及在点击项目后应该触发什么操作。
public class NavigationDrawerAdapter extends ArrayAdapter<NavigationDrawerItem> {
private static final String TAG = "NavigationDrawerAdapter";
public NavigationDrawerAdapter(Context context, int resource, NavigationDrawerItem[] objects) {
super(context, resource, objects);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (null == convertView) {
int itemType = getItemViewType(position);
if (NavigationDrawerItem.TYPE_TITLE == itemType) {
convertView = View.inflate(getContext(), R.layout.item_title_navigation_drawer, null);
} else if (NavigationDrawerItem.TYPE_ITEM_UNDER_TITLE == itemType) {
convertView = View.inflate(getContext(), R.layout.item_under_title_navigation_drawer, null);
} else {
Log.e(TAG, "Returning default title view - Invalid drawer item type" + itemType);
convertView = View.inflate(getContext(), R.layout.item_title_navigation_drawer, null);
}
}
TextView tv = (TextView) convertView.findViewById(R.id.text);
tv.setText(getContext().getString(getItem(position).stringRes));
return convertView;
}
@Override
public int getItemViewType(int position) {
return getItem(position).type;
}
@Override
public int getViewTypeCount() {
return NavigationDrawerItem.NUMBER_OF_ITEM_TYPES;
}
@Override
public boolean isEnabled(int position) {
return NavigationDrawerItem.isItemClickable(getItemViewType(position));
}
}
而且NavigationDrawerItem类:
public final class NavigationDrawerItem {
private static final String TAG = "NavigationDrawerItem";
// Types must have numbers from 0 to n without gaps.
public static final int TYPE_TITLE = 0;// nonclickable
public static final int TYPE_ITEM_UNDER_TITLE = 1;// clickabel
public static final int NUMBER_OF_ITEM_TYPES = 2;
public final int action;
public final String argument;
public final int type;
//Constructors etc.
public static final boolean isItemClickable(int itemType) {
if (TYPE_TITLE == itemType) {
return false;
} else if (TYPE_ITEM_UNDER_TITLE == itemType) {
return true;
} else {
Log.e(TAG, "Invalid item type " + itemType);
return false;
}
}
}
这正是我想要的,但我想告诉我如何编辑我的代码显示到块,因为我不能,但我给这是一个尝试后,你说..非常感谢! – Ezekiel