Activity传递JavaBean对象集合给Activity/Fragment

一、Activity之间传递JavaBean对象集合
1、Bundle+Intent
第一种方式：Bean对象实现Serializable接口，优点实现方式简单，缺点效率低。

public class TestJavaBean implements Serializable {
    private String englishTitle;
    private String contentTitle;
    private String chineseTitle;
    private String contentUrl;
    private String picUrl;
    private String creatTime;
    private String readCount;

    public String getContentUrl() {
        return contentUrl;
    }

    public void setContentUrl(String contentUrl) {
        this.contentUrl = contentUrl;
    }

    public String getEnglishTitle() {
        return englishTitle;
    }

    public void setEnglishTitle(String englishTitle) {
        this.englishTitle = englishTitle;
    }

    public String getContentTitle() {
        return contentTitle;
    }

    public void setContentTitle(String contentTitle) {
        this.contentTitle = contentTitle;
    }

    public String getChineseTitle() {
        return chineseTitle;
    }

    public void setChineseTitle(String chineseTitle) {
        this.chineseTitle = chineseTitle;
    }

    public String getCreatTime() {
        return creatTime;
    }

    public void setCreatTime(String creatTime) {
        this.creatTime = creatTime;
    }

    public String getPicUrl() {
        return picUrl;
    }

    public void setPicUrl(String picUrl) {
        this.picUrl = picUrl;
    }

    public String getReadCount() {
        return readCount;
    }

    public void setReadCount(String readCount) {
        this.readCount = readCount;
    }
}

可以看到只需要实现Serializable接口，不需要其他操作。

第二种方式：JavaBean对象实现Parcelable接口，优点效率更高，缺点就是相对Serializable接口来说实现稍微复杂。

public class SlideshowBean implements Parcelable{
    private String englishTitle;
    private String contentTitle;
    private String chineseTitle;
    private String contentUrl;
    private String picUrl;
    private String creatTime;
    private String readCount;

    public SlideshowBean(){
        super();
    }

    public SlideshowBean(String englishTitle,String contentTitle,String chineseTitle,
                         String contentUrl,String picUrl,String creatTime,String readCount){
        super();
        this.englishTitle = englishTitle;
        this.contentTitle = contentTitle;
        this.chineseTitle = chineseTitle;
        this.contentUrl = contentUrl;
        this.picUrl = picUrl;
        this.creatTime = creatTime;
        this.readCount = readCount;

    }

    public String getEnglishTitle() {
        return englishTitle;
    }

    public void setEnglishTitle(String englishTitle) {
        this.englishTitle = englishTitle;
    }

    public String getContentTitle() {
        return contentTitle;
    }

    public void setContentTitle(String contentTitle) {
        this.contentTitle = contentTitle;
    }

    public String getChineseTitle() {
        return chineseTitle;
    }

    public void setChineseTitle(String chineseTitle) {
        this.chineseTitle = chineseTitle;
    }

    public String getContentUrl() {
        return contentUrl;
    }

    public void setContentUrl(String contentUrl) {
        this.contentUrl = contentUrl;
    }

    public String getPicUrl() {
        return picUrl;
    }

    public void setPicUrl(String picUrl) {
        this.picUrl = picUrl;
    }

    public String getCreatTime() {
        return creatTime;
    }

    public void setCreatTime(String creatTime) {
        this.creatTime = creatTime;
    }

    public String getReadCount() {
        return readCount;
    }

    public void setReadCount(String readCount) {
        this.readCount = readCount;
    }

    @Override
    public String toString() {
        return "SlideshowBean{" +
                "englishTitle='" + englishTitle + ''' +
                ", contentTitle='" + contentTitle + ''' +
                ", chineseTitle='" + chineseTitle + ''' +
                ", contentUrl='" + contentUrl + ''' +
                ", picUrl='" + picUrl + ''' +
                ", creatTime='" + creatTime + ''' +
                ", readCount='" + readCount + ''' +
                '}';
    }

    @Override
    public int describeContents() {
        return 0;
    }
//写入数据
    @Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeString(englishTitle);
        dest.writeString(contentTitle);
        dest.writeString(chineseTitle);
        dest.writeString(contentUrl);
        dest.writeString(picUrl);
        dest.writeString(creatTime);
        dest.writeString(readCount);
    }
//读取数据
    public static final Parcelable.Creator<SlideshowBean> CREATOR = new Creator<SlideshowBean>() {
        @Override
        public SlideshowBean createFromParcel(Parcel source) {
            SlideshowBean slideshowBean = new SlideshowBean();
            slideshowBean.englishTitle = source.readString();
            slideshowBean.contentTitle = source.readString();
            slideshowBean.chineseTitle = source.readString();
            slideshowBean.contentUrl = source.readString();
            slideshowBean.picUrl = source.readString();
            slideshowBean.creatTime = source.readString();
            slideshowBean.readCount = source.readString();

            return slideshowBean;
        }

        @Override
        public SlideshowBean[] newArray(int size) {
            return new SlideshowBean[size];
        }
    };
}

注意：写入和读取的操作顺序要一致。

代码中传递：

//获取Bundle对象实例
Bundle bundle = new Bundle();
    //put集合数据
        bundle.putParcelableArrayList("SlideshowBean", (ArrayList<? extends Parcelable>) slideshowBeenList);
        //获取Intent对象实例
Intent intent = new Intent();
    //将bundle添加到Intent中
        intent.putExtras(bundle);

获取数据比较简单，在Activity中获取传递的Intent对象将Bundle对象取出，调用相对应的方法取出Bundle中的数据就可以了，这里Bundle添加实现了Serializable和Parcelable的JavaBean对象集合的方法没多大区别，只是putParcelableArrayList变成了putSerializableArrayList。

二、Activity传递JavaBean集合对象到Fragment
1、Bundle方式，同样JavaBean也要实现序列化的接口，同上。
代码中传递：

//将数据传入Fragment
        bbcSixminutesFragment = new BbcSixminutesFragment();
        Bundle bundle = new Bundle();
        bundle.putParcelableArrayList("SlideshowBean", (ArrayList<? extends Parcelable>) slideshowBeenList);
        bbcSixminutesFragment.setArguments(bundle);

代码中获取：

//获取Bundle中的数据
        Bundle bundle = getArguments();
        slideshowBeenList = bundle.getParcelableArrayList("SlideshowBean");

同样这种方式还可以传递很多不同类型的数据，可以自行在方法当中去找。

最后

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