Question

我在ActionBarSherlock SherlockFragmentActivity方面遇到了麻烦。我试图关注this guide以便为我正在使用的目的创建导航抽屉，但我无法找到另一个适用的指南（已经进行了多次Google搜索，搜索了SO和其他论坛等。）所以我来这里请求任何帮助，因为这是一个非常重要的项目，我一直在负责。任何帮助都将非常赞赏，因为我仍处于Android编程的学习阶段，目前无法找到其他解决方案。请帮忙！！谢谢！

我遇到的问题是：

1。）在MainLoader.java中，我在MainLoader.java中遇到以下“无法解析符号”：

getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);

和

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

也

// The click listener for ListView in the navigation drawer
private class DrawerItemClickListener implements
        ListView.onItemClickListener {
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position,
             long id) {
        selectedItem(position);
    }
}

最后

private void selectItem(int position) {

        FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
        // Locate Position
        switch (position) {
        case 0:
            ft.replace(R.id.main, fragment1);
            break;
        case 1:
            ft.replace(R.id.main, fragment2);
            break;
        case 2:
            ft.replace(R.id.main, fragment3);
            break;
        }
        ft.commit();
        mDrawerList.setItemChecked(position, true);
        // Close drawer
        mDrawerLayout.closeDrawer(mDrawerList);
    }

2。）我还在MenuListAdapter.java中收到以下“无法解析符号”：

mTitle和mSubTitle

// Declare Variables
    Context context;
    String{} mTitle;
    String{} mSubTitle;
    int[] mIcon;
    LayoutInflater inflater;

mTitle和mSubtitle（以及此后的两个其他实例）

public MenuListAdapter(MainLoader context, String[] title, String[] subtitle,
             int[] icon) {
        this.context = context;
        this.mTitle = title;
        this.mSubTitle = subtitle;
        this.mIcon = icon;
    }

这是我的MainLoader.java

package com.marywood;

import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;
import com.actionbarsherlock.*;

import android.app.ActionBar;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.app.Fragment;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.support.v4.view.GravityCompat;

import static com.marywood.R.drawable;


public class MainLoader extends SherlockFragmentActivity {

    // Declare Variable
    DrawerLayout mDrawerLayout;
    ListView mDrawerList;
    ActionBarDrawerToggle mDrawerToggle;
    MenuListAdapter mMenuAdapter;
    String[] title;
    String[] subtitle;
    int[] icon;
    Fragment fragment1 = new Fragment1(); // Define Fragment 1
    Fragment fragment2 = new Fragment2(); // Define Fragment 2
    Fragment fragment3 = new Fragment3(); // Define Fragment 3

    // Action Bar error fix
    ActionBar actionBar = getSupportActionBar();
    actionBar.setDisplayHomeAsUpEnabled(true);

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main_loader);

        // Generate title
        title = new String[] { "Home", "News & Events", "Admissions"};

        // Generate subtitle
        subtitle = new String[] {};

        // Generate icon
        icon = new int[] { drawable.ic_magnifying_glass, drawable.ic_refresh, drawable.ic_compose};

        // Locate DrawerLayout in main_loader.xml
        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);

        // Locate ListView in drawer_layout.xml
        mDrawerList = (ListView) findViewById(R.id.MainList);

        // Set a custom shadow that overlays the main content when the drawer opens
        mDrawerLayout.setDrawerShadow(drawable.drawer_shadow, GravityCompat.START);

        // Pass results to MenuListAdapter Class
        mMenuAdapter = new MenuListAdapter(this, title, subtitle, icon);

        // Set the MenuListAdapter to the ListView
        mDrawerList.setAdapter(mMenuAdapter);

        // Capture button clicks on side menu
        mDrawerList.setOnItemClickListener(new DrawerItemClickListener());

        //Enable ActionBar app icon to behave as action to toggle nav drawer
        getSupportActionBar().setHomeButtonEnabled(true);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        // ActionBarDrawerToggle ties together the proper interactions
        // between the sliding drawer and the action bar app icon
        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
                drawable.ic_drawer, R.string.drawer_open, R.string.drawer_close) {

            public void onDrawerClosed(View view) {
                // TODO Auto-generated method stub
                super.onDrawerClosed(view);
            }

            public void onDrawerOpened(View drawerView) {
                // TODO Auto-generated method stub
                super.onDrawerOpened(drawerView);
            }
        };

        mDrawerLayout.setDrawerListener(mDrawerToggle);

        if (savedInstanceState == null) {
            selectItem(0);
        }
    }

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

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        if (item.getItemId() == android.R.id.home) {

            if (mDrawerLayout.isDrawerOpen(mDrawerList)) {
                mDrawerLayout.closeDrawer(mDrawerList);
            } else {
                mDrawerLayout.openDrawer(mDrawerList);
            }
        }

        return super.onOptionsItemSelected(item);
    }

    // The click listener for ListView in the navigation drawer
    private class DrawerItemClickListener implements
            ListView.onItemClickListener {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position,
                 long id) {
            selectedItem(position);
        }
    }

    private void selectItem(int position) {

        FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
        // Locate Position
        switch (position) {
        case 0:
            ft.replace(R.id.main, fragment1);
            break;
        case 1:
            ft.replace(R.id.main, fragment2);
            break;
        case 2:
            ft.replace(R.id.main, fragment3);
            break;
        }
        ft.commit();
        mDrawerList.setItemChecked(position, true);
        // Close drawer
        mDrawerLayout.closeDrawer(mDrawerList);
    }

    @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 toggles
        mDrawerToggle.onConfigurationChanged(newConfig);
    }
}

这是我的main_loader.xml

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:id="@+id/drawer_layout"
    android:layout_width="400dp"
    android:layout_height="600dp" >

    <FrameLayout
        android:id="@+id/main"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#015A20"/>

    <ListView
        android:id="@+id/MainList"
        android:layout_width="240dp"
        android:layout_height="wrap_content"
        android:layout_gravity="start"
        android:background="#850736"
        android:textColor="#FBA81A"
        android:divider="@android:color/transparent"
        android:dividerHeight="0dp"
        android:choiceMode="singleChoice" />

</android.support.v4.widget.DrawerLayout>

drawer_list_item.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
                style="?attr/spinnerDropDownItemStyle"
                android:layout_width="match_parent"
                android:layout_height="?attr/dropdownListPreferredItemHeight"
                android:orientation="vertical" >

    <ImageView
        android:id="@+id/icon"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:adjustViewBounds="true" />

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:gravity="center_vertical|left"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/title"
            style="?attr/spinnerDropDownItemStyle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:ellipsize="end"
            android:singleLine="true" />

        <TextView
            android:id="@+id/subtitle"
            style="?attr/spinnerDropDownItemStyle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:ellipsize="end"
            android:singleLine="true"
            android:textAppearance="?attr/textAppearanceSmall" />
    </LinearLayout>

</LinearLayout>

MenuListAdapter.java

package com.marywood;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class MenuListAdapter extends BaseAdapter {

    // Declare Variables
    Context context;
    String{} mTitle;
    String{} mSubTitle;
    int[] mIcon;
    LayoutInflater inflater;

    public MenuListAdapter(Context context, String[] title, String[] subtitle,
             int[] icon) {
        this.context = context;
        this.mTitle = title;
        this.mSubTitle = subtitle;
        this.mIcon = icon;
    }

    @Override
    public int getCount() {
        return mTitle.length;
    }

    @Override
    public Object getItem(int position) {
        return mTitle[position];
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    public View getView(int position, View convertView, ViewGroup parent) {
        // Declare variables
        TextView txtTitle;
        TextView txtSubTitle;
        ImageView imgIcon;

        inflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View itemView = inflater.inflate(R.layout.drawer_list_item, parent, false);

        // Locate the TextViews in drawer_list_item.xml
        txtTitle = (TextView) itemView.findViewById(R.id.title);
        txtSubTitle = (TextView) itemView.findViewById(R.id.subtitle);

        // Locate the ImageView in drawer_list_item.xml
        imgIcon = (ImageView) itemView.findViewById(R.id.icon);

        // Set the results into TextViews
        txtTitle.setText(mTitle[position]);
        txtSubTitle.setText(mSubTitle[position]);

        return itemView;

    }
}

为了节省空间，我有3个片段java文件：Fragment1.java，Fragment2.java和Fragment3.java，它们都有相同的代码，除了反映正确片段的inflater.inflate（R.layout.fragment1，容器，假）等所以我只是把Fragment1.java代码：

package com.marywood;

import com.actionbarsherlock.app.SherlockFragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class Fragment2 extends SherlockFragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
             Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment1, container, false);
        return rootView;
    }
}

同样的情况下，片段XML文件都具有相同的布局但节省空间我将显示fragment1.xml代码：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
                android:layout_width="match_parent"
                android:layout_height="match_parent">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="@string/Fragment1" />

</RelativeLayout>

最后是strings.xml资源文件：

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="app_name">Marywood Mobile</string>
    <string name="menu_settings">Settings</string>
    <string name="drawer_open">Open navigation drawer</string>
    <string name="drawer_close">Close navigation drawer</string>
    <string name="Fragment1">This is Fragment 1</string>
    <string name="Fragment2">This is Fragment 2</string>
    <string name="Fragment3">This is Fragment 3</string>
</resources>

Answer 1

事实证明，我实际上意外地导入了两个相同的类（即标准app类和同时支持.v4类。恢复这些更改解决了错误。

使用ActionBarSherlock和SherlockFragmentActivity的“无法解析方法”的多个实例

和

也

最后

mTitle和mSubTitle

1 个答案: