我按照教程设置导航抽屉，它在我的主要活动中起作用。现在我尝试将其移动到几乎所有其他活动创建BaseActivity，但在进行更改后，导航抽屉图标处于非活动状态，并且在按下时不执行任何操作。
MainActivity代码：
public class MainActivity extends BaseActivity {
private WebView mWebView;
private ActionBarDrawerToggle mDrawerToggle;
private DrawerLayout mDrawerLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// DrawerLayout
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
R.string.drawer_open,
R.string.drawer_close) {
public void onDrawerClosed(View view) {
super.onDrawerClosed(view);
invalidateOptionsMenu();
}
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
invalidateOptionsMenu();
}
};
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
mWebView = (WebView) findViewById(R.id.activity_main_webview);
// Enable Javascript
WebSettings webSettings = mWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
//Hide the semy cirle at th bottom of the action bar when the user slides to the top
mWebView.setOverScrollMode(WebView.OVER_SCROLL_NEVER);
mWebView.getSettings().setLoadWithOverviewMode(true);
mWebView.getSettings().setUseWideViewPort(true);
//mainWebView.setWebViewClient(new WebViewClient());
mWebView.setWebViewClient(new WebViewClient() {
@Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
view.stopLoading(); // may not be needed
switch (Locale.getDefault().toString()) {
case "es_ES":
view.loadUrl("file:///android_asset/www/errorPage.forMainActivity.es_ES.HTML");
break;
default:
view.loadUrl("file:///android_asset/www/errorPage.forMainActivity.en_US.HTML");
break;
}
}
@Override
public void onPageFinished(WebView view, String url) {
//sendRegistrationIdToBackend();
//getCookies();
}
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url.contains("CommentsPopUp")) {
Intent a = new Intent(MainActivity.this, CommentsPopUpActivity.class);
startActivity(a);
} else if (url.contains("postPopUp")) {
Intent b = new Intent(MainActivity.this, PostPopUpActivity.class);
startActivity(b);
} else if (url.contains("ProfilePicPopUp")) {
Intent c = new Intent(MainActivity.this, ProfilePicPopUpActivity.class);
startActivity(c);
} else if (url.contains("PostPicPopUp")) {
Intent c = new Intent(MainActivity.this, PostPicsPopUpActivity.class);
startActivity(c);
} else if (url.contains("reloadIndex")) {
mWebView.loadUrl("http://192.168.0.6/udazz/2.0/2.1/android/2.0/");
} else if (Uri.parse(url).getHost().length() == 0) {
return false;
} else { // Otherwise, give the default behavior (open in browser)
mWebView.loadUrl(url);
}
return true;
}
});
mWebView.loadUrl("http://192.168.0.6/udazz/2.0/2.1/android/2.0/");
// Stop local links and redirects from opening in browser instead of WebView
// mWebView.setWebViewClient(new MyAppWebViewClient());
}
@Override
public void onBackPressed(){
super.onBackPressed();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
return super.onOptionsItemSelected(item);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
}
public void getCookies() {
CookieManager cookieManager = CookieManager.getInstance();
String cookies = cookieManager.getCookie("http://192.168.0.6/");
//Log.i("UdazzT", cookies);
}
}
BaseActivity代码：
public class BaseActivity extends AppCompatActivity {
ListView mDrawerList;
RelativeLayout mDrawerPane;
private ActionBarDrawerToggle mDrawerToggle;
private DrawerLayout mDrawerLayout;
ArrayList<NavItem> mNavItems = new ArrayList<NavItem>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_base);
mNavItems.add(new NavItem(getResources().getString(R.string.myPosts), "", R.mipmap.ic_action_home));
mNavItems.add(new NavItem(getResources().getString(R.string.myFriends), "", R.mipmap.ic_action_about));
mNavItems.add(new NavItem(getResources().getString(R.string.findFriends), "", R.mipmap.ic_action_about));
mNavItems.add(new NavItem(getResources().getString(R.string.profileInfo), "", R.mipmap.ic_action_about));
mNavItems.add(new NavItem(getResources().getString(R.string.profilePic), "", R.mipmap.ic_action_about));
mNavItems.add(new NavItem(getResources().getString(R.string.notifications), "", R.mipmap.ic_action_settings));
mNavItems.add(new NavItem(getResources().getString(R.string.contact), "", R.mipmap.ic_action_settings));
mNavItems.add(new NavItem(getResources().getString(R.string.logOut), "", R.mipmap.ic_action_about));
// DrawerLayout
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
// Populate the Navigtion Drawer with options
mDrawerPane = (RelativeLayout) findViewById(R.id.drawerPane);
mDrawerList = (ListView) findViewById(R.id.navList);
DrawerListAdapter adapter = new DrawerListAdapter(this, mNavItems);
mDrawerList.setAdapter(adapter);
// Drawer Item click listeners
mDrawerList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
selectItemFromDrawer(position);
}
});
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
R.string.drawer_open,
R.string.drawer_close) {
public void onDrawerClosed(View view) {
super.onDrawerClosed(view);
invalidateOptionsMenu();
}
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
invalidateOptionsMenu();
}
};
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_base, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Pass the event to ActionBarDrawerToggle
// If it returns true, then it has handled
// the nav drawer indicator touch event
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
// 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);
}
@Override
public void onBackPressed(){
if(mDrawerLayout.isDrawerOpen(Gravity.LEFT)){ //replace this with actual function which returns if the drawer is open
mDrawerLayout.closeDrawer(Gravity.LEFT); // replace this with actual function which closes drawer
}
else{
super.onBackPressed();
}
}
/*
* Called when a particular item from the navigation drawer
* is selected.
* */
private void selectItemFromDrawer(int position) {
switch (position) {
case 0:
Intent a = new Intent(this, MyPostsActivity.class);
startActivity(a);
break;
case 1:
Intent b = new Intent(this, MyFriendsActivity.class);
startActivity(b);
break;
case 2:
Intent c = new Intent(this, FindFriendsActivity.class);
startActivity(c);
break;
case 3:
Intent d = new Intent(this, MyProfileInfoActivity.class);
startActivity(d);
break;
case 5:
Intent f = new Intent(this, MyNotificationsActivity.class);
startActivity(f);
break;
case 6:
Intent g = new Intent(this, ContactActivity.class);
startActivity(g);
break;
case 7:
//mWebView.loadUrl("http://192.168.0.6/udazz/2.0/2.1/android/2.0/signOut.php");
break;
}
mDrawerList.setItemChecked(position, true);
//setTitle(mNavItems.get(position).mTitle);
// Close the drawer
mDrawerLayout.closeDrawer(mDrawerPane);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
mDrawerToggle.syncState();
}
}
class NavItem {
String mTitle;
String mSubtitle;
int mIcon;
public NavItem(String title, String subtitle, int icon) {
mTitle = title;
mSubtitle = subtitle;
mIcon = icon;
}
}
class DrawerListAdapter extends BaseAdapter {
Context mContext;
ArrayList<NavItem> mNavItems;
public DrawerListAdapter(Context context, ArrayList<NavItem> navItems) {
mContext = context;
mNavItems = navItems;
}
@Override
public int getCount() {
return mNavItems.size();
}
@Override
public Object getItem(int position) {
return mNavItems.get(position);
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.drawer_item, null);
}
else {
view = convertView;
}
TextView titleView = (TextView) view.findViewById(R.id.title);
TextView subtitleView = (TextView) view.findViewById(R.id.subTitle);
ImageView iconView = (ImageView) view.findViewById(R.id.icon);
titleView.setText(mNavItems.get(position).mTitle);
subtitleView.setText(mNavItems.get(position).mSubtitle);
iconView.setImageResource(mNavItems.get(position).mIcon);
return view;
}
}
答案 0 :(得分：1)
我已经给出了这个答案。 请参阅此https://stackoverflow.com/a/30490289/3498931和 在你的情况下，在将监听器设置为mDrawerLayout之后实现 syncState（）方法。
home在此声明之后，使用我在链接中给出的代码。你也有重复的代码，从类中删除不适用的代码。这两种方式都是可能的，但只保留一个，以避免进一步的冲突，不可读性或混乱。