Intent 传递对象和集合

来源：互联网发布：js代码的执行顺序编辑：程序博客网时间：2024/05/28 06:05

两个Activity跳转的时候，相互之间传递对象数据，这种需求还是比较常见的，本文实现了在开启新Activity的同时传递对象参数。

如果对序列化和反序列化不太理解，可以参考这篇文章<java序列化和反序列化的简单理解>。

首先是效果图:

废话不多说直接展示代码

1.SendActivity.java的内容：

public class SendActivity extends Activity implements OnClickListener {Button btn_serializable;Button btn_parcelable;Button btn_sendList;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_send);        btn_serializable = (Button) findViewById(R.id.btn_serializable);        btn_parcelable = (Button) findViewById(R.id.btn_parcelable);        btn_sendList =  (Button) findViewById(R.id.btn_sendList);        btn_serializable.setOnClickListener(this);        btn_parcelable.setOnClickListener(this);        btn_sendList.setOnClickListener(this);    }    @Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_serializable:sendSerializableObject();break;case R.id.btn_parcelable:sendParcelableObject();break;case R.id.btn_sendList:sendSerializableList();break;default:break;}}private void sendSerializableObject(){Intent intent = new Intent(this,ReceiveSerActivity.class);UserBySerializable user = new UserBySerializable();user.setUserName("张三");user.setPassword(19940306);//Bundle bundle = new Bundle();//bundle.putSerializable("user", user);//intent.putExtras(bundle);intent.putExtra("user", user);startActivity(intent);}private void sendParcelableObject(){Intent intent = new Intent(this,ReceiveParActivity.class);UserByParcelable user = new UserByParcelable();user.setUserName("李四");user.setPassword(19930708);//Bundle bundle = new Bundle();//bundle.putParcelable("user", user);//intent.putExtras(bundle);intent.putExtra("user", user);startActivity(intent);}private void sendSerializableList(){Intent intent = new Intent(this,ReceiveListActivity.class);List<UserBySerializable> list = new ArrayList<UserBySerializable>();UserBySerializable user01 = new UserBySerializable();user01.setUserName("一号成员");user01.setPassword(10000001);list.add(user01);UserBySerializable user02 = new UserBySerializable();user02.setUserName("二号成员");user02.setPassword(10000002);list.add(user02);UserBySerializable user03 = new UserBySerializable();user03.setUserName("三号成员");user03.setPassword(10000003);list.add(user03);intent.putExtra("userList", (Serializable)list);startActivity(intent);}}

2.UserBySerializable对象：

public class UserBySerializable implements Serializable {private static final long serialVersionUID = -7060210544600464481L;    private String userName;        private int password;        public void setUserName(String value)    {        userName = value;    }    public String getUserName()    {        return userName;    }public int getPassword() {return password;}public void setPassword(int password) {this.password = password;}  }

3.UserByParcelable对象

public class UserByParcelable implements Parcelable {    private String userName;        private int password;                public void setUserName(String value)    {        userName = value;    }    public String getUserName()    {        return userName;    }          public int getPassword() {return password;}public void setPassword(int password) {this.password = password;}public static final Parcelable.Creator<UserByParcelable> CREATOR = new Creator<UserByParcelable>() {          public UserByParcelable createFromParcel(Parcel source) {          UserByParcelable mUser = new UserByParcelable();              mUser.userName = source.readString();              mUser.password = source.readInt();              return mUser;          }          public UserByParcelable[] newArray(int size) {              return new UserByParcelable[size];          }      };            public int describeContents() {          return 0;      }      public void writeToParcel(Parcel parcel, int flags) {          parcel.writeString(userName);          parcel.writeInt(password);      }    }

这是最需要注意的三个部分，其余部分就不展示出来了，直接给大家Demo源码自己研究一下吧！点击打开链接

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