android中自动生成parcelable

最新推荐文章于 2025-06-11 21:44:42 发布

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#android #string #android studio #arraylist #hashmap

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本文介绍了如何在Android Studio中利用插件自动生成Parcelable代码，包括安装插件的步骤和生成代码的过程。

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在Android studio中

安装android parcelable code generator 插件

书写自己的目标类

public class DemoParcelable {
    String aString;
    int aInt;
    double aDouble;
    HashMap<String, String> aHashMap;
    ArrayList<String> aArrayList;
    DemoAnotherClass anotherClass;

    class DemoAnotherClass{
        ConcurrentHashMap<String, String> aConcurrentHashMap;
    }
}

在类名处alt + insert，在弹出界面选择Parcelable，最后生成的代码如下

public class DemoParcelable implements Parcelable {
    public static final Parcelable.Creator<DemoParcelable> CREATOR = new Parcelable.Creator<DemoParcelable>() {
        public DemoParcelable createFromParcel(Parcel source) {
            return new DemoParcelable(source);
        }

        public DemoParcelable[] newArray(int size) {
            return new DemoParcelable[size];
        }
    };
    String aString;
    int aInt;
    double aDouble;
    HashMap<String, String> aHashMap;
    ArrayList<String> aArrayList;
    DemoAnotherClass anotherClass;

    public DemoParcelable() {
    }

    protected DemoParcelable(Parcel in) {
        this.aString = in.readString();
        this.aInt = in.readInt();
        this.aDouble = in.readDouble();
        this.aHashMap = (HashMap<String, String>) in.readSerializable();
        this.aArrayList = in.createStringArrayList();
        this.anotherClass = in.readParcelable(DemoAnotherClass.class.getClassLoader());
    }

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeString(this.aString);
        dest.writeInt(this.aInt);
        dest.writeDouble(this.aDouble);
        dest.writeSerializable(this.aHashMap);
        dest.writeStringList(this.aArrayList);
        dest.writeParcelable(this.anotherClass, flags);
    }

    static class DemoAnotherClass implements Parcelable {
        public static final Creator<DemoAnotherClass> CREATOR = new Creator<DemoAnotherClass>() {
            public DemoAnotherClass createFromParcel(Parcel source) {
                return new DemoAnotherClass(source);
            }

            public DemoAnotherClass[] newArray(int size) {
                return new DemoAnotherClass[size];
            }
        };
        ConcurrentHashMap<String, String> aConcurrentHashMap;

        public DemoAnotherClass() {
        }

        protected DemoAnotherClass(Parcel in) {
            this.aConcurrentHashMap = (ConcurrentHashMap<String, String>) in.readSerializable();
        }

        @Override
        public int describeContents() {
            return 0;
        }

        @Override
        public void writeToParcel(Parcel dest, int flags) {
            dest.writeSerializable(this.aConcurrentHashMap);
        }
    }
}