我目前有一个gridview,它将图像位置/ id返回给父活动。我还想将图像Uri返回或提取到父活动,并将其设置为可在父活动中的其他位置解析的变量。我一直在寻找,但是找不到适合我正在尝试的解决方案。
我的gridview子活动返回位置
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.grid_layout);
GridView gridView = (GridView) findViewById(R.id.grid_view);
// Instance of ImageAdapter Class
gridView.setAdapter(new ImageAdapter(this));
/**
* On Click event for Single Gridview Item
* */
gridView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
Intent data = new Intent(PicPicker2.this, PictureActivity.class);
// passing array index
data.putExtra("id", position);
setResult(Activity.RESULT_OK, data);
finish();
}
});
}
}
我目前在父活动中捕获结果
else if (reqCode == 2) {
// Selected image id
int position = data.getExtras().getInt("id");
ImageAdapter imageAdapter = new ImageAdapter(this);
ChosenImageView.setImageResource(imageAdapter.mThumbIds[position]);
}
}
}
我想要解析变量
Uri attached_Uri = Uri.parse("SOME VARIABLE OF THE RETURNED URI");
我想将Uri attached_Uri = Uri.parse()设置为在gridview中单击的项目。我只是一个周末的Android修补工,试图学习平台的概念,所以解释和例子对我来说有很长的路要走,非常感谢。
添加了我的imageadapter
公共类ImageAdapter扩展了BaseAdapter {
private Context mContext;
// Keep all Images in array
public Integer[] mThumbIds = {
R.drawable.pic_1, R.drawable.pic_2,
R.drawable.pic_3, R.drawable.pic_4,
R.drawable.pic_5, R.drawable.pic_6,
R.drawable.pic_7, R.drawable.pic_8,
R.drawable.pic_9, R.drawable.pic_10,
R.drawable.pic_11, R.drawable.pic_12,
R.drawable.pic_13, R.drawable.pic_14,
R.drawable.pic_15
};
// Constructor
public ImageAdapter(Context c){
mContext = c;
}
@Override
public int getCount() {
return mThumbIds.length;
}
@Override
public Object getItem(int position) {
return mThumbIds[position];
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView = new ImageView(mContext);
imageView.setImageResource(mThumbIds[position]);
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setLayoutParams(new GridView.LayoutParams(70, 70));
return imageView;
}
}
答案 0 :(得分:1)
您使用资源作为图片,因此uris的格式为"android.resource://your.package.name/resource_id"
。更具体地说,假设您拥有变量position
中的图像索引(就像在onClick
方法中一样),并且您有一个ImageAdapter
的实例mImageAdapter
(请注意,在您的情况下,您可以创建适配器的新副本,但通常您需要使用公共实例)。然后,以下内容将为您提供Uri
Uri imageUri = Uri.parse("android.resource://your.package.name/" +
mImageAdapter.getItem(position));
在上面的代码"your.package.name"
中是AndroidManifest.xml
文件中定义的包的名称。