Question

一切顺利，直到我在android studio中的getSystemService和getCounterVisability行上出错，

我的适配器类如下包com.jembe.locals.adapter;

import com.jembe.locals.R;
import com.jembe.locals.model.NavDrawerItem;

import java.util.ArrayList;

import android.app.Activity;
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;
/**
 * Created by mine on 12/03/14.
 */
public class NavDrawerListAdapter extends BaseAdapter {

    private Context context;
    private ArrayList<NavDrawerItem> navDrawerItems;

    public NavDrawerListAdapter(Context context, ArrayList<NavDrawerItem> navDrawerItems){
        this.context = context;
        this.navDrawerItems = navDrawerItems;
    }

    @Override
    public int getCount(){
        return navDrawerItems.size();
    }

    @Override
    public Object getItem(int position){
        return navDrawerItems.get(position);
    }

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

    @Override
    public View getView(int position,View convertView, ViewGroup parent){
     if (convertView == null) {
         LayoutInflater mInflater = (LayoutInflater)
                 context.getSytemService(Activity.LAYOUT_INFLATER_SERVICE);
         convertView = mInflater.inflate(R.layout.drawer_list_item, null);
     }

        ImageView imgIcon = (ImageView) convertView.findViewById(R.id.icon);
        TextView txtTitle = (TextView) convertView.findViewById(R.id.title);
        TextView txtCount = (TextView) convertView.findViewById(R.id.counter);

        imgIcon.setImageResource(navDrawerItems.get(position).getIcon());
        txtTitle.setText(navDrawerItems.get(position).getTitle());

        // displaying count
        // check whether it set visible or not
        if(navDrawerItems.get(position).getCounterVisibility()){
            txtCount.setText(navDrawerItems.get(position).getCount());
        }else{
            // hide the counter view
            txtCount.setVisibility(View.GONE);
        }

        return convertView;
    }

}

有谁能指出我的问题是什么？

出于信息目的，我使用android studio，通过sdk manager安装所有sdks和支持类

Gradle tasks [：locals：assembleDebug]任务执行失败   ＆＃39;：当地人：compileDebugJava＆＃39;


编译失败;请参阅编译器错误输出以获取详细信C：\用户\矿山\ AndroidStudioProjects \ LocalsAware \当地人的\ src \主\ java中的\ com \ jembe \当地人\适配器\ NavDrawerListAdapter.java     错误：找不到符号方法getSytemService（String）错误：不能     找到符号方法getCounterVisibility（）

我也发布了我的适配器类和我的主要活动类。

package com.jembe.locals;

import android.app.Activity;
import android.app.ActionBar;
import android.app.Fragment;
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.os.Build;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;



public class MainActivity extends Activity {

    private String[] mTitles;
    private DrawerLayout mDrawerLayout;
    private ListView mDrawerList;

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

        mTitles = getResources().getStringArray(R.array.nav_drawer_items);

        mDrawerList = (ListView) findViewById(R.id.left_drawer);




        if (savedInstanceState == null) {
            getFragmentManager().beginTransaction()
                    .add(R.id.drawer_layout, new PlaceholderFragment())
                    .commit();
        }
    }



    @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);
        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);
    }

    /**
     * A placeholder fragment containing a simple view.
     */
    public static class PlaceholderFragment extends Fragment {

        public PlaceholderFragment() {
        }

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

}

这是我的navDrawerItem.java

package com.jembe.locals.model;

/**
 * Created by mine on 12/03/14.
 */
public class NavDrawerItem {

    private String title;
    private int icon;
    private String count = "0";
    // boolean to set visbility of the counter
    private boolean isCounterVisble = false;

    public NavDrawerItem(){}


    public NavDrawerItem(String title, int icon){
        this.title = title;
        this.icon = icon;
    }

    public NavDrawerItem(String title,int icon,boolean isCounterVisble){
        this.title = title;
        this.icon = icon;
        this.isCounterVisble = isCounterVisble;
        this.count = count;
    }

    public String getTitle(){
        return this.title;
    }

    public int getIcon(){
        return this.icon;
    }

    public String getCount(){
        return this.count;
    }

    public boolean getCouterVisibility(){
        return this.isCounterVisble;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public void setIcon(int icon) {
        this.icon = icon;
    }

    public void setCount(String count) {
        this.count = count;
    }

    public void setCounterVisble(boolean isCounterVisble) {
        this.isCounterVisble = isCounterVisble;
    }

}

“无法解析方法getSystemService和getCounterVisability导航抽屉

0 个答案: