Android 开发中使用Intent传递数据的方法

Activity之间通过Intent传递值，支持基本数据类型和String对象及它们的数组对象byte、byte[]、char、char[]、boolean、boolean[]、short、short[]、int、int[]、long、long[]、float、float[]、double、double[]、String、String[]，还有采用实现Serializable、Parcelable接口的类对象传递数据的两种方法：一种是Bundle.putSerializable(Key,Object);另一种是Bundle.putParcelable(Key, Object)

例如：

import android.os.Parcel;
import android.os.Parcelable;
public class Book implements Parcelable {
    private String bookName;
    private String author;
    private int publishTime;

    public String getBookName() {
        return bookName;
    }
    public void setBookName(String bookName) {
        this.bookName = bookName;
    }
    public String getAuthor() {
        return author;
    }
    public void setAuthor(String author) {
        this.author = author;
    }
    public int getPublishTime() {
        return publishTime;
    }
    public void setPublishTime(int publishTime) {
        this.publishTime = publishTime;
    }

    public static final Parcelable.Creator<Book> CREATOR = new Creator<Book>() {
        public Book createFromParcel(Parcel source) {
            Book mBook = new Book();
            mBook.bookName = source.readString();
            mBook.author = source.readString();
            mBook.publishTime = source.readInt();
            return mBook;
        }
        public Book[] newArray(int size) {
            return new Book[size];
        }
    };

    public int describeContents() {
        return 0;
    }
    public void writeToParcel(Parcel parcel, int flags) {
        parcel.writeString(bookName);
        parcel.writeString(author);
        parcel.writeInt(publishTime);
    }
}

实现Serializable接口：

import java.io.Serializable;
public class Person implements Serializable {
    private static final long serialVersionUID = -7060210544600464481L;
    private String name;
    private int age;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }

}

 

这样在Activity中就可编写传递数据代码：

Intent mIntent = new Intent(this, 地址Activity.class);
Bundle mBundle = new Bundle();
//采用parcelable传输数据
mBundle.putParcelable("data", mBook);
//采用serializable传输数据
mBundle.putSerializable("data", items);
mIntent.putExtras(mBundle);

startActivity(mIntent);

接受数据可以采用：

Intent intent = getIntent();
ArrayList<Map<String, String>> items = (ArrayList<Map<String, String>>)intent.getExtras().get("data");