Xamarin.android Intent传递对象

由于实际工作需要，可能会遇到Intent传递对象的情况，这种情况稍稍麻烦一点，在这里有三种方法可以解决这个问题：

(1) ISerializable接口

(2) IParcelable接口

(3)利用Json对对象进行序列化->反序列，得到原对象(个人推荐第三种，原因：使用简单，一两句话的事情)

这里我将采用第二种方法和第三种方法实验，各位看官可以自行对比。

方法一：利用IParcelable接口

1 新建一个类Student，继承IParcelable接口

public class Student : Java.Lang.Object, IParcelable
{
public string Name { get; set; }

public string Sex { get; set; }

public Student()
{
}

private Student(Parcel parcel)
{
Sex = parcel.ReadString();
Name = parcel.ReadString();
}

public int DescribeContents()
{
return 0;
}

public void WriteToParcel(Parcel dest, ParcelableWriteFlags flags)
{
dest.WriteString(Sex);
dest.WriteString(Name);
}

#region IParcelable implementation

// The creator creates an instance of the specified object
private static readonly GenericParcelableCreator<Student> _creator
= new GenericParcelableCreator<Student>((parcel) => new Student(parcel));

[ExportField("CREATOR")]
public static GenericParcelableCreator<Student> GetCreator()
{
return _creator;
}

#endregion
}

/// <summary>
/// Generic Parcelable creator that can be used to create objects from parcels
/// </summary>
public sealed class GenericParcelableCreator<T> : Java.Lang.Object, IParcelableCreator
where T : Java.Lang.Object, new()
{
private readonly Func<Parcel, T> _createFunc;

/// <summary>
/// Initializes a new instance of the <see cref="GenericParcelableCreator{T}"/> class.
/// </summary>
/// <param name='createFromParcelFunc'>
/// Func that creates an instance of T, populated with the values from the parcel parameter
/// </param>
public GenericParcelableCreator(Func<Parcel, T> createFromParcelFunc)
{
_createFunc = createFromParcelFunc;
}

#region IParcelableCreator Implementation

public Java.Lang.Object CreateFromParcel(Parcel source)
{
return _createFunc(source);
}

public Java.Lang.Object[] NewArray(int size)
{
return new T[size];
}

#endregion
}

2 新建Activity1为测试，在MainActivity中发送对象，代码如下：

protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.Main);
Button button = FindViewById<Button>(Resource.Id.MyButton);
button.Click += delegate
{
Student stu=new Student();
stu.Name = "Intent对象";
stu.Sex = "第五种生物";
button.Text = string.Format("{0} clicks!", count++);
Intent intent=new Intent(this,typeof(Activity1));
intent.PutExtra("mode",  stu);
StartActivity(intent);
};

}

在Activity中接收对象：

public class Activity1 : Activity
{
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
var my_class = Intent.GetParcelableExtra("mode") as Student;

}
}

Debug结果：



方法二：利用Json对对象进行序列化(需自己添加Json库)

参考文章地址：

http://stackoverflow.com/questions/26046668/pass-data-from-one-activity-to-another-in-xamarin-android

 

 

 

最后附上Demo地址：http://download.csdn.net/detail/sinat_26562875/9477273

 

请大家多多指正~~~