我在一个屏幕上有一个网格视图,在网格视图中我显示了 SDCard 中存在的所有图像,这工作正常。现在我想做的是,当我单击任何 gridview 图像时,它应该进入下一个活动,并且应该全屏显示该特定图像。我已经参考了其他一些链接并尝试了但没有得到正确的解决方案。
public class Gallary_Images extends Activity {
private Cursor cursor;
private int columnIndex;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.gallery_images);
// Set up an array of the Thumbnail Image ID column we want
String[] projection = { MediaStore.Images.Thumbnails._ID };
// Create the cursor pointing to the SDCard
cursor = managedQuery(
MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, projection,
null, // Return all rows
null, MediaStore.Images.Thumbnails.IMAGE_ID);
// Get the column index of the Thumbnails Image ID
columnIndex = cursor
.getColumnIndexOrThrow(MediaStore.Images.Thumbnails._ID);
GridView sdcardImages = (GridView) findViewById(R.id.gridView1);
sdcardImages.setAdapter(new ImageAdapter(this));
// Set up a click listener
sdcardImages.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView parent, View v, int position,
long id) {
Intent i = new Intent(getApplicationContext(),
ViewGallery_Photo.class);
i.putExtra("id", position);
startActivity(i);
}
});
}
private class ImageAdapter extends BaseAdapter {
private Context context;
public ImageAdapter(Context localContext) {
context = localContext;
}
public int getCount() {
return cursor.getCount();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView picturesView;
if (convertView == null) {
picturesView = new ImageView(context);
// Move cursor to current position
cursor.moveToPosition(position);
// Get the current value for the requested column
int imageID = cursor.getInt(columnIndex);
// Set the content of the image based on the provided URI
picturesView.setImageURI(Uri.withAppendedPath(
MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, ""
+ imageID));
picturesView.setScaleType(ImageView.ScaleType.FIT_CENTER);
picturesView.setPadding(8, 8, 8, 8);
picturesView
.setLayoutParams(new GridView.LayoutParams(100, 100));
} else {
picturesView = (ImageView) convertView;
}
return picturesView;
}
}
}
这是我调用下一个活动的 gridview 类。现在我不知道我应该如何在下一个活动中获取图像。请帮忙...