帶圖片的自定義ListView。我無法點擊某個項目並將我發送給其他活動

Question

通過點擊該項目，什麼都不會發生。提示我沒有正確實施OnItemClickListener方法的地方。

import java.util.ArrayList; 
    import android.app.Activity; 
    import android.content.Intent; 
    import android.content.res.Resources; 
    import android.os.Bundle; 
    import android.view.Menu; 
    import android.view.View; 
    import android.widget.AdapterView; 
    import android.widget.AdapterView.OnItemClickListener; 
    import android.widget.ListView; 
    import android.widget.TextView; 

    import com.lessons.Lesson1; 

    public class Lesson extends Activity { 

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

     ListView lista = (ListView) findViewById(R.id.itemlist); 
     ArrayList<Manager> arraydir = new ArrayList<Manager>(); 
     Manager manager;  

    Resources res = getResources(); 

    // Вводим данные 
    manager = new Manager(res.getDrawable(R.drawable.lesson1), res.getString(R.string.lesson1), res.getString(R.string.lessonname1)); 
    arraydir.add(manager); 
    manager = new Manager(res.getDrawable(R.drawable.lesson2), res.getString(R.string.lesson2), res.getString(R.string.lessonname2)); 
    arraydir.add(manager); 
AdapterLesson adapter = new AdapterLesson(this, arraydir); 

    lista.setAdapter(adapter); 

    lista.setOnItemClickListener(new OnItemClickListener() { 
    @Override 
    public void onItemClick(AdapterView<?> parent, View itemClicked, int position, long id) { 

    TextView textView = (TextView) itemClicked.findViewById(R.id.lessonname); 
    String strText = textView.getText().toString(); 

    if (strText.equalsIgnoreCase(getResources().getString(R.string.lesson1))) { 
    // Launch the lesson1 Activity 
    startActivity(new Intent(Lesson.this, Lesson1.class)); 

        } 

       } 
      }); 

     } 
     @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; 
     } 

    } 

適配器

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; 

public class AdapterLesson extends BaseAdapter{ 

    protected Activity activity; 
    protected ArrayList<Manager> items; 

    public AdapterLesson(Activity activity, ArrayList<Manager> items) { 
     this.activity = activity; 
     this.items = items; 
     } 

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

    @Override 
    public Object getItem(int arg0) { 
     return items.get(arg0); 
    } 

    @Override 
    public long getItemId(int position) { 
     return items.get(position).getId(); 
    } 


    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 

     // Создаем convertView для эффективности 
     View v = convertView; 

     //Связываем формат списка, который мы создали 
     if(convertView == null){ 
      LayoutInflater inf = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      v = inf.inflate(R.layout.itemlist, null); 
     } 

     // Создаем объект директивы 
     Manager dir = items.get(position); 
     //Вводим фото 
     ImageView foto = (ImageView) v.findViewById(R.id.foto); 
     foto.setImageDrawable(dir.getFoto()); 
     //Вводим номер урока 
     TextView lessonnumber = (TextView) v.findViewById(R.id.lessonnumber); 
     lessonnumber.setText(dir.getLessonnumber()); 
     //Вводим название урока 
     TextView lessonname = (TextView) v.findViewById(R.id.lessonname); 
     lessonname.setText(dir.getLessonname()); 

     // Возвращаем 
     return v; 
    } 
} 

經理

import android.graphics.drawable.Drawable; 

public class Manager { 
    protected Drawable foto; 
    protected String lessonnumber; 
    protected String lessonname; 
    protected long id; 

    public Manager(Drawable foto, String lessonnumber, String lessonname) { 
     super(); 
     this.foto = foto; 
     this.lessonnumber = lessonnumber; 
     this.lessonname = lessonname; 
    } 

    public Manager(Drawable foto, String lessonnumber, String lessonname, long id) { 
     super(); 
     this.foto = foto; 
     this.lessonnumber = lessonnumber; 
     this.lessonname = lessonname; 
     this.id = id; 
    } 

    public Drawable getFoto() { 
     return foto; 
    } 

    public void setFoto(Drawable foto) { 
     this.foto = foto; 
    } 

    public String getLessonnumber() { 
     return lessonnumber; 
    } 

    public void setLessonnumber(String lessonnumber) { 
     this.lessonnumber = lessonnumber; 
    } 

    public String getLessonname() { 
     return lessonname; 
    } 

    public void setLessonname(String lessonname) { 
     this.lessonname = lessonname; 
    } 

    public long getId() { 
     return id; 
    } 

    public void setId(long id) { 
     this.id = id; 
    } 

} 

Answer 1

使用此代碼爲點擊列表項，並進入下一extivity ..

lv.setOnItemClickListener(new OnItemClickListener() { 
     public void onItemClick(AdapterView<?> parent, View view, 
      int position, long id) { 
      switch(position){ 
      case 0: 
       Intent firstIntent = new Intent(yourclass.this, firstitem.class); 
       startActivity(firstIntent); 
       break; 
      case 1: 
       Intent secondintent = new Intent(yourclass.this, seconditem.class); 
       startActivity(secondintent); 
       break; 

Answer 2

Try This code only change get view method part 

@Override 
    public View getView(int position, View convertView, ViewGroup parent) { 

     // Создаем convertView для эффективности 
     View v = convertView; 

     //Связываем формат списка, который мы создали 
     if(convertView == null){ 
      LayoutInflater inf = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      v = inf.inflate(R.layout.itemlist, null); 
     } 

     // Создаем объект директивы 
     Manager dir = items.get(position); 
     //Вводим фото 
     ImageView foto = (ImageView) v.findViewById(R.id.foto); 
     foto.setImageDrawable(dir.getFoto()); 
     //Вводим номер урока 
     TextView lessonnumber = (TextView) v.findViewById(R.id.lessonnumber); 
     lessonnumber.setText(dir.getLessonnumber()); 
     //Вводим название урока 
     TextView lessonname = (TextView) v.findViewById(R.id.lessonname); 
     lessonname.setText(dir.getLessonname()); 

    v.setOnClickListener(new OnClickListener() { 

       @Override public void onClick(View v) { 



        Intent firstIntent = new Intent(yourclass.this, firstitem.class); 
        startActivity(firstIntent); 


      } }); 

     // Возвращаем 
     return v; 
    }