[英]Call activity using intent method
我知道 Android 操作系统需要 paramterles 构造函数来重新创建 Activity,如果需要,我可以使用 bundle 来传递一些参数,如下所示:
private void OpenOtherActivityWindow_Click(object sender, EventArgs e)
{
Intent nextActivity = new Intent(this, typeof(ThirdActivity));
Dog mydog = new Dog("mydogName");
Bundle bundle = new Bundle();
bundle.PutSerializable("mydoggy", mydog);
nextActivity.PutExtra("RowID", Convert.ToString(10));
nextActivity.PutExtras(bundle);
StartActivity(nextActivity);
}
[Activity(Label = "ThirdActivity")]
public class ThirdActivity : Activity
{
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Create your application here
SetContentView(Resource.Layout.third);
//Receive values if any from previous activity
if (!Intent.HasExtra("mydoggy")) return;
Dog tryme = (Dog)Intent.GetSerializableExtra("mydoggy");
if (!Intent.HasExtra("RowID")) return;
string text = Intent.GetStringExtra("RowID") ?? "0";
}
}
然而,是否可以创建静态方法,该方法将从给定的参数返回给我的意图,例如?:
static Intent CreateIntent(Dog dog, int rowID)
如果是这样,有人可以向我展示它与我在代码中显示的内容相反的样子。
我不知道你的ThirdActivity
的细节,但我可以通过创建一个简单的演示来实现类似的功能。 您可以在此处查看代码。
[Activity(Label = "MovieDetailActivity")]
public class MovieDetailActivity : Activity
{
public TextView textView;
public static MovieModel mMoviemodel;// define your model here
public static int mRowID; // define a int variable mRowID
public static Intent createIntent(Context context, MovieModel movie, int rowID)
{
Intent intent = new Intent(context, typeof(MovieDetailActivity));
//Pass parameters here
mMoviemodel = movie;
mRowID = rowID;
return intent;
}
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Create your application here
SetContentView(Resource.Layout.detaillayout);
textView = FindViewById<TextView>(Resource.Id.info_textview);
textView.Text = "movie name:" + mMoviemodel.mMovieName + " text = " + mRowID;
}
}
用法:
// pass your Object model
StartActivity( MovieDetailActivity.createIntent(this, movie,10));
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