我有一个现有的应用程序，我想添加一个侧面导航器。 我意识到Android SDK为此提供了一个模板（通过添加“添加”菜单中的侧面导航抽屉活动）但不确定如何将其添加到应用程序中。
以下是生成的侧边栏类的代码：
package com.testapp;
import android.app.Activity;
import android.app.ActionBar;
import android.app.Fragment;
import android.app.FragmentManager;
import android.os.Bundle;
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;
public class SideNavActivity extends Activity 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_side_nav);
mNavigationDrawerFragment = (NavigationDrawerFragment) getFragmentManager()
.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 = getFragmentManager();
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 = getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
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.side_nav, 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();
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_side_nav,
container, false);
return rootView;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
((SideNavActivity) activity).onSectionAttached(getArguments()
.getInt(ARG_SECTION_NUMBER));
}
}
}
以下是我所拥有的其中一项活动的代码：
public class MainMenu extends SideNavActivity implements IResponsable{
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
this.setContentView(R.layout.activity_main_menu);
final Button btnLogout = (Button) findViewById(R.id.btn_logout);
final Button btnProfile= (Button) findViewById(R.id.btn_prfile);
btnLogout.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
new HttpGet(HttpClient.getClient(), MainMenu.this).execute("auth/logout");
}
});
btnProfile.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent prof = new Intent(MainMenu.this, ProfileActivity.class);
startActivity(prof);
//finish();
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main_menu, menu);
return true;
}
@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();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void getResponse(Object iResult) {
int code = Utils.ParseResponse.getResponseCode((Response)iResult);
if(code == 200)
{
SaveSharedPreference.clearUserName(getApplicationContext());
Intent menu = new Intent(MainMenu.this, LoginActivity.class);
startActivity(menu);
finish();
}
else if(code == 403){
SaveSharedPreference.clearUserName(getApplicationContext());
Intent menu = new Intent(MainMenu.this, LoginActivity.class);
menu.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(menu);
finish();
}
}
}
它还生成了简单的有效xml文件。
在新的空白项目中添加此活动时，它可以正常工作。
非常感谢您的帮助!!
答案 0 :(得分：1)
随着Android设计库的推出，导航抽屉已经过重新设计，在这里您可以找到很棒的解释：现在它是如何工作的：
http://android-developers.blogspot.com/2015/05/android-design-support-library.html
还有一个由Google的人创建的示例项目：
https://github.com/chrisbanes/cheesesquare
在这里查看setupDrawerContent方法：
以及相关的布局文件：
https://github.com/chrisbanes/cheesesquare/blob/master/app/src/main/res/layout/activity_main.xml