Android中Parcelable的使用

1、封装要进行跨进程传输的对象

package com.lewa;import android.graphics.Bitmap;import android.os.Parcel;import android.os.Parcelable;public class WeiBoWidget implements Parcelable{private String contentText;private Bitmap contentPicture;public WeiBoWidget(){}public String getContentText() {return contentText;}public void setContentText(String contentText) {this.contentText = contentText;}public Bitmap getContentPicture() {return contentPicture;}public void setContentPicture(Bitmap contentPicture) {this.contentPicture = contentPicture;}@Overridepublic int describeContents() {// TODO Auto-generated method stubreturn 0;}@Overridepublic void writeToParcel(Parcel dest, int flags) {// TODO Auto-generated method stubdest.writeString(contentText);if(this.contentPicture != null){dest.writeInt(1);this.contentPicture.writeToParcel(dest, flags);}else{dest.writeInt(0);}}public static final Parcelable.Creator<WeiBoWidget> CREATOR = new Parcelable.Creator<WeiBoWidget>() {@Overridepublic WeiBoWidget createFromParcel(Parcel source) {// TODO Auto-generated method stubWeiBoWidget weiBoWidget = new WeiBoWidget();weiBoWidget.contentText = source.readString();if(0 != source.readInt()){weiBoWidget.contentPicture = Bitmap.CREATOR.createFromParcel(source);//因为Bitmap实现了Parcelable接口，所以这里可以这样使用}return weiBoWidget;}@Overridepublic WeiBoWidget[] newArray(int size) {// TODO Auto-generated method stubreturn new WeiBoWidget[size];}};}

2、使用Intent、Bundle进行传输

Intent intent = new Intent();intent.setAction(GET_DATA_OVER);Bundle extra = new Bundle();extra.putParcelableArrayList("weiBoWidgets", (ArrayList<WeiBoWidget>) result);intent.putExtras(extra);context.sendBroadcast(intent);