我在制作我的类Parcelable
时遇到了困难。问题是,我尝试将该类的成员,它是一个ArrayList<Parcelable>
对象写入包裹中。这个ArrayList
是可序列化的,列表中的对象(ZigBeeDev
)是Parcelable
的。
以下是相关代码:
package com.gnychis.coexisyst;
import java.util.ArrayList;
import java.util.Iterator;
import android.os.Parcel;
import android.os.Parcelable;
public class ZigBeeNetwork implements Parcelable {
public String _mac; // the source address (of the coordinator?)
public String _pan; // the network address
public int _band; // the channel
ArrayList<Integer> _lqis; // link quality indicators (to all devices?)
ArrayList<ZigBeeDev> _devices; // the devices in the network
public void writeToParcel(Parcel out, int flags) {
out.writeString(_mac);
out.writeString(_pan);
out.writeInt(_band);
out.writeSerializable(_lqis);
out.writeParcelable(_devices, 0); // help here
}
private ZigBeeNetwork(Parcel in) {
_mac = in.readString();
_pan = in.readString();
_band = in.readInt();
_lqis = (ArrayList<Integer>) in.readSerializable();
_devices = in.readParcelable(ZigBeeDev.class.getClassLoader()); // help here
}
public int describeContents() {
return this.hashCode();
}
public static final Parcelable.Creator<ZigBeeNetwork> CREATOR =
new Parcelable.Creator<ZigBeeNetwork>() {
public ZigBeeNetwork createFromParcel(Parcel in) {
return new ZigBeeNetwork(in);
}
public ZigBeeNetwork[] newArray(int size) {
return new ZigBeeNetwork[size];
}
};
//...
}
我已经标记了两个地方 "// help here",以便理解如何正确地写入包裹并如何重构它。如果ZigBeeDev
是Parcelable
(已经经过适当的测试),那么我该如何正确地执行这个操作?
ZigBeeDev.Creator
应该是ZigBeeDev.CREATOR
。在我自己的项目中,我每次都会遇到错误,直到我意识到有两个不同的创建者可以使用。 - gatlingxyzHashtable
,该Hashtable
可以使用基本类型(包括String
)作为键或值。 - Eido95