Question

我想将图像uri从0位置的数组images []传递给其他片段。这是我的片段我想在postion == 0 传递onclick方法。

   public class OrganicAcidFragment extends Fragment {
        String[] product_name={"Formic Acid","Acetic Acid","Propionic Acid",};
        String[] product_cn={"CH2O2","CH3COOH","C3H602"};

        int[] images={R.drawable.formicacid,R.drawable.aceticacidjpg,R.drawable.propionicacid};
        ListView list;
        String quantity;
        String price;
        FragmentManager fm;
        @Nullable
        @Override
        public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
            View rootview = inflater.inflate(R.layout.i_fragment_organic_acid, container, false);
            fm=getFragmentManager();


            MyAdapter adapter=new MyAdapter(getActivity(),product_name,images,product_cn,quantity,price);
            list.setAdapter(adapter);
            list.setOnItemClickListener(new AdapterView.OnItemClickListener() {

                @Override
                public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                    if(position==0){

                        PurchaseFragment ldf = new PurchaseFragment ();
                        Bundle args = new Bundle();
                        args.putString("product_name", product_name[0]);
                        args.putString("product_cn", product_cn[0]);
                        ldf.setArguments(args);
                        getFragmentManager().beginTransaction().add(R.id.content_frame, ldf).commit();
                    }
                    if(position==1){
                        fm.beginTransaction().replace(R.id.content_frame,new OrganicBaseFragment()).addToBackStack("chemicalorganicfragment").commit();
                    }
                    if(position==2){
                        fm.beginTransaction().replace(R.id.content_frame,new OrganicBaseFragment()).addToBackStack("chemicalorganicfragment").commit();
                    }


                }
        });
        return rootview;
    }
}

在此片段中，我想获取该数据：

  public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
            View rootview = inflater.inflate(R.layout.i_fragment_purchase, container, false);

            String product_names = getArguments().getString("product_name");
           String product_cns = getArguments().getString("product_cn");


            imagee=(ImageView)rootview.findViewById(R.id.productimage);
            cancel= (Button) rootview.findViewById(R.id.cancel);
            address= (EditText) rootview.findViewById(R.id.address);

            name.setText(product_names);
            cn.setText("("+product_cns+")");




            return rootview;
        }

两个片段都处于相同的活动中。

我该怎么做？

Answer 1

我认为在运行的活动和片段之间发送数据的最佳和最简单的方法是LocalBroadcast。

Intent intent = new Intent("some_name");
intent.putExtra("some_data_key", "some_data_value");
LocalBroadcastManager.getInstance(getApplicationContext()).sendBroadcast(intent);

这是如何发送本地广播。

对于listen本地广播，您必须在onCreate（）（如果侦听器是Activity）或onCreateView（）（如果侦听器是片段）或每当您想要接收该广播时注册该广播：

LocalBroadcastManager.getInstance(this/*here is context*/).registerReceiver(someReceiver,
            new IntentFilter("some_name"));

这是接收数据的广播接收器：

BroadcastReceiver someReceiver= new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        String data= intent.getStringExtra("some_data_key");
        //Here do whatever you want with data
        //It isn't must be a string. If you want to send a object you must make object class implement Parcelable properly.
    }
};

最后，不要忘记取消注册此广播接收器。在onDestroy（）或你想要的任何地方做。

LocalBroadcastManager.getInstance(this).unregisterReceiver(someReceiver);

Answer 2

您可以使用bundle将数据从一个片段发送到另一个片段。

//Put the value
YourNewFragment ldf = new YourNewFragment ();
Bundle args = new Bundle();
args.putString("YourKey", "YourValue");
ldf.setArguments(args);

//Inflate the fragment
getFragmentManager().beginTransaction().add(R.id.container, ldf).commit();

在另一个片段的onCreateView（）中：

//Retrieve the value
String value = getArguments().getString("YourKey");

如何从我在一个片段中声明的数组中获取图像uri并将其传递给其他片段？

2 个答案: