android - 单击侧滑菜单中的项目时打开 Webview

Question

当我们单击侧滑导航中的菜单时，我正在尝试创建一个新 Activity 。当我单击菜单时，我已经成功创建了一个新 Activity ，但是当在 WebView 中打开一个新 Activity 时，侧面 slider 正在消失，这是我不想要的。 作为一个例子，我的应用程序与 Facebook 应用程序相同，当我们单击任何项​​目说“Newsfeed”时，它会打开 Activity ，但幻灯片导航仍然存在。请让我知道如何实现它。提前致谢。

这是我的主要 Activity 代码:

package com.example.diarysystemforms;

import com.android.adapter.NavDrawerListAdapter;
import com.android.model.NavDrawerItem;

import java.util.ArrayList;

import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.content.Intent;
import android.content.res.Configuration;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.widget.DrawerLayout;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;

public class MainActivity extends Activity {
    private DrawerLayout mDrawerLayout ,mDrawer;
    private ListView mDrawerList;
    private ActionBarDrawerToggle mDrawerToggle;

    // nav drawer title
    private CharSequence mDrawerTitle;

    // used to store app title
    private CharSequence mTitle;

    // slide menu items
    private String[] navMenuTitles;
    private TypedArray navMenuIcons;

    private ArrayList<NavDrawerItem> navDrawerItems;
    private NavDrawerListAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mTitle = mDrawerTitle = getTitle();

        // load slide menu items
        navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items);

        // nav drawer icons from resources
        navMenuIcons = getResources()
                .obtainTypedArray(R.array.nav_drawer_icons);

        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        mDrawerList = (ListView) findViewById(R.id.list_DiarySystem);

        navDrawerItems = new ArrayList<NavDrawerItem>();

        // adding nav drawer items to array
        // Home
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[0], navMenuIcons.getResourceId(0, -1)));
        // Find People
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[1], navMenuIcons.getResourceId(1, -1)));
        // Photos
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[2], navMenuIcons.getResourceId(2, -1)));
        // Communities, Will add a counter here
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[3], navMenuIcons.getResourceId(3, -1), true, "22"));
        // Pages
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[4], navMenuIcons.getResourceId(4, -1)));
        // What's hot, We  will add a counter here
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[5], navMenuIcons.getResourceId(5, -1), true, "50+"));


        // Recycle the typed array
        navMenuIcons.recycle();

        mDrawerList.setOnItemClickListener(new SlideMenuClickListener());

        // setting the nav drawer list adapter
        adapter = new NavDrawerListAdapter(getApplicationContext(),
                navDrawerItems);
        mDrawerList.setAdapter(adapter);

        // enabling action bar app icon and behaving it as toggle button
        getActionBar().setDisplayHomeAsUpEnabled(true);
        getActionBar().setHomeButtonEnabled(true);

        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
                R.drawable.ic_drawer, //nav menu toggle icon
                R.string.app_name, // nav drawer open - description for accessibility
                R.string.app_name // nav drawer close - description for accessibility
        ) {
            public void onDrawerClosed(View view) {
                getActionBar().setTitle(mTitle);
                // calling onPrepareOptionsMenu() to show action bar icons
                invalidateOptionsMenu();
            }

            public void onDrawerOpened(View drawerView) {
                getActionBar().setTitle(mDrawerTitle);
                // calling onPrepareOptionsMenu() to hide action bar icons
                invalidateOptionsMenu();
            }
        };
//      
    }




    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // toggle nav drawer on selecting action bar app icon/title
        if (mDrawerToggle.onOptionsItemSelected(item)) {
            return true;
        }
        // Handle action bar actions click
        switch (item.getItemId()) {
        case R.id.action_settings:
            return true;
        default:
            return super.onOptionsItemSelected(item);
        }
    }



    /**
     * Diplaying fragment view for selected nav drawer list item
     * */
//  private void displayView(int position) {
//      // update the main content by replacing fragments
//      HomeFragment fragment = null;
//      switch (position) {
//      case 0:
//          fragment = new HomeFragment();
//          break;
//      case 1:
//          fragment = new FindPeopleFragment();
//          break;
//      case 2:
//          fragment = new PhotosFragment();
//          break;
//      case 3:
//          fragment = new CommunityFragment();
//          break;
//      case 4:
//          fragment = new PagesFragment();
//          break;
//      case 5:
//          fragment = new WhatsHotFragment();
//          break;
//
//      default:
//          break;
//      }
//
//      if (fragment != null) {
//          FragmentManager fragmentManager = getFragmentManager();
//          fragmentManager.beginTransaction()
//                  .replace(R.id.frame_container, fragment).commit();
//
            // update selected item and title, then close the drawer
//          mDrawerList.setItemChecked(position, true);
//          mDrawerList.setSelection(position);
//          setTitle(navMenuTitles[position]);
//          mDrawerLayout.closeDrawer(mDrawerList);
//      } else {
//          // error in creating fragment
//          Log.e("MainActivity", "Error in creating fragment");
//      }
//  }

    @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);
    }
    private class SlideMenuClickListener implements
    ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    // Highlight the selected item, update the title, and close the drawer
    // update selected item and title, then close the drawer
    mDrawerList.setItemChecked(position, true);         
    //You should reset item counter 
    mDrawerLayout.closeDrawer(mDrawerList);
    if ( position == 0 ) {
        Intent intent = new Intent(MainActivity.this, HomeFragment.class);
        startActivity(intent);
        mDrawerLayout.closeDrawers();
        if ( position == 1 ) {
            Intent intent2 = new Intent(MainActivity.this, CommunityFragment.class);
            startActivity(intent2);
            mDrawerLayout.closeDrawers();
        }

//public void onItemClick(AdapterView<?> parent, View view, int position,
//      long id) {
//  // display view for selected nav drawer item
//  displayView(position);
}
}

}
}

这是我的 Activity 代码，当我单击该项目时，该代码将打开。作为示例，我仅给出了一项 Activity 的 Activity 代码:

package com.example.diarysystemforms;

import android.app.Activity;
import android.app.Fragment;
import android.content.Context;
import android.os.Bundle;
import android.view.Display;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.webkit.WebView;
import android.webkit.WebViewClient;

public class HomeFragment extends Activity {
    private static final String PIC_WIDTH = null;
    WebView mWebView; 

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.fragment_home);
        //WebView web = new WebView(this);

        WebViewClient yourWebClient = new WebViewClient()
           {
               // Override page so it's load on my view only
               @Override
               public boolean shouldOverrideUrlLoading(WebView  view, String  url)
               {
                // This line we let me load only pages inside Firstdroid Webpage
                if ( url.contains("DiarySystem") == true )
                   // Load new URL Don't override URL Link
                   return false;

                // Return true to override url loading (In this case do nothing).
                return true;
               }
           };


           // Get Web view
//         mWebView.setPadding(0, 0, 0, 0);
//          mWebView.setInitialScale(getScale());

           mWebView = (WebView) findViewById( R.id.webview ); //This is the id you gave
           mWebView.getSettings().setJavaScriptEnabled(true);  
           mWebView.getSettings().setSupportZoom(true);       //Zoom Control on web (You don't need this
                                                  //if ROM supports Multi-Touch     
           mWebView.getSettings().setBuiltInZoomControls(true); //Enable Multitouch if supported by ROM
           mWebView.setWebViewClient(yourWebClient);

           // Load URL
           mWebView.loadUrl("http://103.241.181.36:8080/DiarySystem/addvehtogrp.jsp");




       }//End of Method onCreate

}

这是我的activity_main.xml

<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">

    <!-- Framelayout to display Fragments -->
    <FrameLayout
        android:id="@+id/frame_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <!-- Listview to display slider menu -->
    <ListView
        android:id="@+id/list_DiarySystem"
        android:layout_width="240dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:choiceMode="singleChoice"
        android:divider="@color/list_divider"
        android:dividerHeight="1dp"        
        android:listSelector="@drawable/list_selector"
        android:background="@color/list_background"/>
</android.support.v4.widget.DrawerLayout>

这是fragment_home.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <WebView
        android:id="@+id/webview"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_below="@+id/textView1"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="75dp" />
</RelativeLayout>

Answer 1

尝试删除 mDrawerLayout.closeDrawers();在你的代码中。