Question

主要Activity.java

    public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main_grid);

    // populate data
    products = new ArrayList();
    products.add(new Product("http://image1.jpg"));
    products.add(new Product("http://image2.jpg"));
    products.add(new Product("http://image3"));
    products.add(new Product("http://image4"));

    //
    gvProducts = (GridView) findViewById( R.id.grid_products);
    adapterProducts = new ProductListAdapterWithCache(this, products);
    gvProducts.setAdapter(adapterProducts);




    gvProducts.setOnItemClickListener(new AdapterView.OnItemClickListener() {
       public void onItemClick(AdapterView<?> parent, View v, int position, long id) {


           String path = (MainActivity.this, position);

           Intent intent = new Intent(MainActivity.this, FullImageActivity.class);
           intent.putExtra("IMAGEPATH",path);
           startActivity(intent);
           }
    });

}

我正在android studio中开发简单的图像处理应用程序。我正在从url下载图像以在网格中显示如上所示..我想在点击网格时显示页面中的完整图像..尝试通过意图传递位置但在此行上显示错误。

String path = (MainActivity.this, position);

FullImageActivity.java

    public class FullImageActivity extends Activity {

      @Override
     public void onCreate(Bundle savedInstanceState){

        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout_fullscreen_image);
        // selected item
       int imageInt = getIntent().getIntExtra("IMAGEPATH", R.drawable.spinner);
       ImageView imageView = (ImageView) findViewById(R.id.imageView);
       imageView.setImageResource(imageInt);

    }
}

我是初学者，如果我在基础知识上做错了什么，请指导我。

谢谢，

Answer 1

尝试以下代码：

gvProducts.setOnItemClickListener(new AdapterView.OnItemClickListener() {
       public void onItemClick(AdapterView<?> parent, View v, int position, long id) {


           Intent intent = new Intent(MainActivity.this, FullImageActivity.class);
           intent.putExtra("IMAGEPATH",products.get(position).imagePath);
           startActivity(intent);
           }
    });

活动：

String path = getIntent().getStringExtra("IMAGEPATH");

Answer 2

我建议你使用PhotoView和Universal Image Loader，参考PhotoView项目中的示例代码，我也提供一些代码，希望这会有所帮助。

Java Code片段：

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.setContentView(R.layout.diary_imageview);

    imageUrl = getIntent().getStringExtra(IMAGE_URL);

    mProgress.setVisibility(View.VISIBLE);
    mAttacher = new PhotoViewAttacher(mPhotoView);
    mAttacher.setOnPhotoTapListener(new PhotoViewAttacher.OnPhotoTapListener() {
        @Override
        public void onPhotoTap(View view, float v, float v2) {
            finish();
        }
    });

    ImageLoader.getInstance().displayImage(imageUrl, mPhotoView, Util.getDisplayImageOptions(), new SimpleImageLoadingListener() {
        @Override
        public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
            mProgress.setVisibility(View.GONE);
            mAttacher.update();
        }
    });

}

XML布局：

<merge xmlns:android="http://schemas.android.com/apk/res/android">

<FrameLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <uk.co.senab.photoview.PhotoView
        android:id="@+id/photoView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="center" />

    <ProgressBar
        android:id="@+id/progress"
        android:layout_gravity="center"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</FrameLayout>

</merge>

显示单击的网格图像的完整大小图像

2 个答案: