如何从网格视图点击时显示的具体形象 [英] How to display the specific image when clicked from a grid view

问题描述

我在我的应用程序中使用的网格视图中显示一些图像

I am displaying some images in my application using a grid view

<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/gridview"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"
    android:numColumns="auto_fit"
    android:verticalSpacing="10dp"
    android:horizontalSpacing="10dp"
    android:columnWidth="90dp"
    android:stretchMode="columnWidth"
    android:gravity="center"
/>

这是下面的code用于处理图像

this is the following code which handles the images

public class Gallery extends Activity {
    Integer[] imageIDs = {
            R.drawable.a,
            R.drawable.b,
            R.drawable.c,
            R.drawable.d,
            R.drawable.e,
            R.drawable.f,
            R.drawable.g,
            R.drawable.k,
            R.drawable.j,
            R.drawable.i,
            R.drawable.h,

    };
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.gallery);

        GridView gridView = (GridView) findViewById(R.id.gridview);
        gridView.setAdapter(new ImageAdapter(this));

        gridView.setOnItemClickListener(new OnItemClickListener() 
        {
            public void onItemClick(AdapterView<?> parent, 
            View v, int position, long id) 
            {                
                Toast.makeText(getBaseContext(), 
                        "pic" + (position + 1) + " selected", 
                        Toast.LENGTH_SHORT).show();
            }
        });        
    }

    public class ImageAdapter extends BaseAdapter 
    {
        private Context context;

        public ImageAdapter(Context c) 
        {
            context = c;
        }

        //---returns the number of images---
        public int getCount() {
            return imageIDs.length;
        }

        //---returns the ID of an item--- 
        public Object getItem(int position) {
            return position;
        }

        public long getItemId(int position) {
            return position;
        }

        //---returns an ImageView view---
        public View getView(int position, View convertView, ViewGroup parent) 
        {
            ImageView imageView;
            if (convertView == null) {
                imageView = new ImageView(context);
                imageView.setLayoutParams(new GridView.LayoutParams(185, 185));
                imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
                imageView.setPadding(5, 5, 5, 5);
            } else {
                imageView = (ImageView) convertView;
            }
            imageView.setImageResource(imageIDs[position]);
            return imageView;
        }
    }    
}

我想在全尺寸来显示特定的图像当它被从屏幕点击。
任何人都可以提出一个解决方案？

I would like to display the specific image in full size when it is clicked from the screen. Can anyone suggest a solution?

推荐答案

既然你想在一个新的活动，以显示你的形象，我会做这样的事情：

Since you want to display your Image in a new Activity, I would do something like this:

public void onItemClick(AdapterView<?> parent, View v, int position, long id) {                
    Intent intent = new Intent(Gallery.this, DisplayActivity.class);
    intent.putExtra("Image Int", imageIDs[position]);
    startActivity(intent);
}

在您的显示使用活动：

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.display);

    int imageInt = getIntent().getIntExtra("Image Int", R.drawable.oops); // oops should be a fallback if an error happens
    ImageView imageView = (ImageView) findViewById(R.id.imageView);
    imageView.setImageResource(imageInt);
}

这篇关于如何从网格视图点击时显示的具体形象的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！