我正在嘗試使用它的uri將手機圖庫中的圖像添加到gridView中。 不幸的是,它沒有做任何事情,我似乎無法找到一種方法使其工作。在GridView中設置圖像Uri
我的適配器:
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應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();
}
}
我設置在GridView在我的onCreate我的活動裏面像這樣:
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();
}
});
從圖庫中選擇一張照片時,gridView保持空白。你如何使它工作?我究竟做錯了什麼 ?先謝謝你。
謝謝,終於做了一件事! :D它將圖片添加到gridView中(將5更改爲1)但添加另一張圖片時會覆蓋,您如何保留它? – Dunoo
將PictureGroupActivity.selectedImage更改爲ArrayList。一旦你得到一個圖像,你存儲uri。並在getitemcount中返回列表的大小。 –