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  • intent传值传对象跳转

    intent传值传对象跳转
    1.传值
    //原activity中存入一个字段
    intent = new Intent(From.this, To.class);
    intent.putExtra("switch", "chongzhi");
    startActivity(intent);
    //跳转至新的activity中后q取出该字段
    Intent switchIntent = getIntent();
    String myswitch = switchIntent.getStringExtra("switch");
    2.传对象
    intent = dialogInfo.getIntent();
    /往Intent对象中传入一个对象
    UserInfo 需实现Parcelable接口 创建creator
    //存到一个Bundle 中
    Bundle myBundle = new Bundle();
    myBundle.putParcelable("userInfo", userInfo);
    intent.putExtras(myBundle);
    //在新的 Toactivity中取对象
    Intent getIntent = getIntent();
    UserInfo userInfo=(UserInfo)(getIntent.getParcelableExtra("userInfo"));
    详情见http://caiwb1990.iteye.com/blog/1404201
    3.附实现Parcelable的接口类 也就是序列化该对象
    package com.example.entity;
    import android.os.Parcel;
    import android.os.Parcelable;
    import android.os.Parcelable.Creator;
    public class UserInfo implements Parcelable{
    private int id;
    private String username;
    private String password;
    private String phoneNum;
    private double money;
    @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.writeString(username);
    dest.writeString(password);
    dest.writeString(phoneNum);
    dest.writeDouble(money);
    }
    public static final Creator<UserInfo> CREATOR = new Creator<UserInfo>() {
    @Override
    public UserInfo createFromParcel(Parcel source) {
    UserInfo entity = new UserInfo();
    // 顺序需和写入顺序一样
    entity.username= source.readString();
    entity.password = source.readString();
    entity.phoneNum = source.readString();
    entity.money = source.readDouble();
    return  entity ;
    }
    @Override
    public UserInfo[] newArray(int arg0) {
    // TODO Auto-generated method stub
    return null;
    }
    };
    }

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  • 原文地址:https://www.cnblogs.com/brucemengbm/p/6784486.html
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