Question

我对xamarin.android相当新，我在滚动视图中有一个图像视图，我想在点击时放大它。（当在用户点击图像时显示完整图像onclick就像在移动Facebook上一样）我希望它在全屏幕中打开。我如何实现这一目标？

我已做过一些研究，无法找到一些有用的线程......任何帮助都会被提前感谢你。

继承我的细节性课程

private ImageView mtimg0, mtimg1, mtimg2, mtimg3, mtimg4, mtimg5;
protected override void OnCreate(Bundle savedInstanceState)
{
        base.OnCreate(savedInstanceState);
        SetContentView(Resource.Layout.detailLayout);

        FindViews();


        Android.Content.Intent i = this.Intent;
        string iname = i.Extras.GetString("MTNAME");
        int iimg0 = i.Extras.GetInt("IMG0");
        int iimg1 = i.Extras.GetInt("IMG1");
        int iimg2 = i.Extras.GetInt("IMG2");
        int iimg3 = i.Extras.GetInt("IMG3");
        int iimg4 = i.Extras.GetInt("IMG4");
        int iimg5 = i.Extras.GetInt("IMG5");

        mtimg0.SetImageResource(iimg0);
        mtimg1.SetImageResource(iimg1);
        mtimg2.SetImageResource(iimg2);
        mtimg3.SetImageResource(iimg3);
        mtimg4.SetImageResource(iimg4);
        mtimg5.SetImageResource(iimg5);
    }

    private void FindViews()
    {
        tmtname = FindViewById<TextView>(Resource.Id.mtname);
        mtimg0 = FindViewById<ImageView>(Resource.Id.mtimg00); 
        mtimg1 = FindViewById<ImageView>(Resource.Id.mtimg01);
        mtimg2 = FindViewById<ImageView>(Resource.Id.mtimg02);
        mtimg3 = FindViewById<ImageView>(Resource.Id.mtimg03);
        mtimg4 = FindViewById<ImageView>(Resource.Id.mtimg04);
        mtimg5 = FindViewById<ImageView>Resource.Id.mtimg05);            

    }
}

EDITED

这是我的列表视图中的项目示例，其中我获取了所有图片

 class MountainsData
  {
    public static List<Mountain> MountainList = new List<Mountain>()
        {
        new Mountain()
            {
                MtName = "ALTO PEAK",
                Masl = 1332,
                Difficulty = 6,
                Island = 2,
                MtImg00 = Resource.Drawable.altopeak,
                MtImg01 = Resource.Drawable.altopeak1,
                MtImg02 = Resource.Drawable.altopeak2,
                MtImg03 = Resource.Drawable.altopeak3,
                MtImg04 = Resource.Drawable.altopeak4,
                Location = "ORMOC, LEYTE",
                JumpOff ="Lake Danao National Park, Ormoc",
                Description ="LLA: 11.1061 N, 124.7097 E, 1332 
            }

并在我的列表中查看活动..这里是我如何将每个项目传递给我的详细活动...并在我的详细活动中收到它我使用上面的代码（在细节性课上..这个问题上面的第一个代码）

   private List<Mountain> mMountains;
   private void OpenDetailActivity(int pos)
    {
        mt = mMountains[pos];
        i = new Intent(this, typeof(DetailActivity));

        i.PutExtra("IMG0", mt.MtImg00);
        i.PutExtra("IMG1", mt.MtImg01);
        i.PutExtra("IMG2", mt.MtImg02);
        i.PutExtra("IMG3", mt.MtImg03);
        i.PutExtra("IMG4", mt.MtImg04);
        i.PutExtra("IMG5", mt.MtImg05);
        i.PutExtra("MTNAME", mt.MtName);
        i.PutExtra("LOCATION", mt.Location);
        i.PutExtra("JUMPOFF", mt.JumpOff);
        i.PutExtra("DESCRIPTION", mt.Description);
        i.PutExtra("BACKGROUND", mt.Background);
        i.PutExtra("ITINERARY", mt.Itinerary);
        i.PutExtra("PRACTICALITIES", mt.Practicalities);
        i.PutExtra("ATTIRE", mt.Attire);
        i.PutExtra("TTB", mt.Ttb);

        StartActivity(i);

    }

我想要在细微差别中发生的事情是当我点击图像视图时......在全屏显示它但我无法找到正确传递字符串的方法..提前谢谢你：D

Answer 1

这是DialogFragment的解决方案：

您的fragment_dialog.axml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:minWidth="2000dp"  
    android:minHeight="2000dp"> 
  <ImageView
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:id="@+id/img"
        android:src="@drawable/aaa"
        android:scaleType="fitCenter"/>
 </LinearLayout>

您的MyDialogFragment.cs

public class MyDialogFragment : DialogFragment
{
    private ImageView imgView;
    static public MyDialogFragment newInstance()
    {
        MyDialogFragment f = new MyDialogFragment();
        return f;
    }

    public override void OnCreate(Bundle savedInstanceState)
    {
        base.OnCreate(savedInstanceState);
        SetStyle(DialogFragmentStyle.NoTitle, Android.Resource.Style.ThemeBlackNoTitleBarFullScreen);
    }

    public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
    {
        base.OnCreateView(inflater, container, savedInstanceState);
        View v = inflater.Inflate(Resource.Layout.fragment_dialog, container, false);

        imgView = v.FindViewById<ImageView>(Resource.Id.img);
        //Get int and set it to the ImageView
        int imgPassed = Arguments.GetInt("imgId");
        imgView.SetImageResource(imgPassed);

        return v;
    }
}

来自您的ItemSelected或Click事件

        FragmentTransaction ft = FragmentManager.BeginTransaction();
        DialogFragment newFragment = MyDialogFragment.newInstance();

        //Declare String and get the Id
        string imgName = "bbb"; //Change with the name of the image you want to pass
        int imgId = Resources.GetIdentifier(imgName, "drawable", PackageName);

        //Pass it with the Bundle class
        Bundle bundle = new Bundle();
        bundle.PutInt("imgId", imgId);
        newFragment.Arguments = bundle;

        //Show the Fragment
        newFragment.Show(ft, "dialog");

修改我使用Bundle类作为将数据从Activities传递到Fragments的可能方法之一。对我来说很好。

获得相同结果的另一种方法是使用其他活动和意图，您可以在此处找到所需的一切：Passing Data Between Activities

如何在

1 个答案: