我有listview连接到数据库，当我点击listview中的任何项目时，我想为下一个活动中的特定项目获取数据

@Override 
    protected void onStart() { 
     super.onStart(); 
     mArrayList.clear(); 
     ArrayList<String> ar = new ArrayList<String>(); 
     final List<DatabaseAccounts> data = dB.getallrows(); 
     list = (ListView)findViewById(R.id.listView); 
     list.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
      @Override 
      public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
       DatabaseAccounts dbAccount = data.get(position); 
       Intent intent = new Intent(getApplicationContext(),Diary2.class); 
       startActivity(intent); 
      } 
     }); 
     for(DatabaseAccounts dbb : data){ 
      mArrayList.add(dbb.getState()); 
     } 
     mArrayAdapter = new ArrayAdapter(this,android.R.layout.simple_list_item_1,mArrayList); 
     list.setAdapter(mArrayAdapter); 
    } 

首先，你需要实现Parcelable接口在类：

public class Student implements Parcelable { 
     int id; 
     String name; 
     public Student(int id, String name) { 
      this.id = id; 
      this.name = name; 
     } 
     public int getId() { 
      return id; 
     } 
     public String getName() { 
      return name; 
     } 
     @Override 
     public int describeContents() { 
      // TODO Auto-generated method stub 
      return 0; 
     } 
     @Override 
     public void writeToParcel(Parcel dest, int arg1) { 
      // TODO Auto-generated method stub 
      dest.writeInt(id); 
      dest.writeString(name); 
     } 
     public Student(Parcel in) { 
      id = in.readInt(); 
      name = in.readString(); 
     } 
     public static final Parcelable.Creator<Student> CREATOR = new Parcelable.Creator<Student>() { 
      public Student createFromParcel(Parcel in) { 
       return new Student(in); 
      } 
      public Student[] newArray(int size) { 
       return new Student[size]; 
      } 
     }; 
    } 

而从调用活动

列表

ArrayList<Student> arraylist = new ArrayList<Student>(); 

代码

Intent intent = new Intent(this, SecondActivity.class); Bundle bundle = new Bundle(); bundle.putParcelableArrayList("mylist", arraylist); intent.putExtras(bundle); this.startActivity(intent); 

代码名为活动

protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_second); 
    Bundle bundle = getIntent().getExtras(); 
    ArrayList<Student> arraylist = bundle.getParcelableArrayList("mylist"); 
}