我正在尝试使用它的uri将手机图库中的图像添加到gridView中。 不幸的是,它没有做任何事情,我似乎无法找到一种方法使其工作。在GridView中设置图像Uri
我的适配器:
public class ImageGridAdapter extends BaseAdapter {
public Uri imageUri;
private Context mContext;
public ImageGridAdapter(Context c) {
this.mContext = c;
}
@Override
public int getCount() {
return 0;
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return 0;
}
public View getView(int position, View convertView, ViewGroup parent) {
imageUri = PictureGroupActivity.selectedImage;
ImageView imageView;
if (convertView == null) {
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(85, 85));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8, 8, 8, 8);
} else {
imageView = (ImageView) convertView;
}
imageView.setImageURI(null);
imageView.setImageURI(imageUri);
return imageView;
}
}
的adpater应onActivtyResult服用的imageUri:
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
gridView = (GridView)findViewById(R.id.picture_group_gridView);
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
selectedImage = data.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Toast.makeText(PictureGroupActivity.this, "selectedImage ma hodnotu: " + selectedImage, Toast.LENGTH_SHORT).show();
}
}
我设置在GridView在我的onCreate我的活动里面像这样:
GridView gridView = (GridView)findViewById(R.id.picture_group_gridView);
gridView.setAdapter(new ImageGridAdapter(this));
gridView.invalidateViews();
gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(PictureGroupActivity.this, "You clicked " + position, Toast.LENGTH_SHORT).show();
}
});
从图库中选择一张照片时,gridView保持空白。你如何使它工作?我究竟做错了什么 ?先谢谢你。
谢谢,终于做了一件事! :D它将图片添加到gridView中(将5更改为1)但添加另一张图片时会覆盖,您如何保留它? – Dunoo
将PictureGroupActivity.selectedImage更改为ArrayList。一旦你得到一个图像,你存储uri。并在getitemcount中返回列表的大小。 –