Android如何成功截击请求，如何将数据从Activity传递到Fragment（） _Activity

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我想通过BroadcastReceiver将数据从活动传递到片段。但我无法得到片段中的数据，导致那里的onReceive()没有启动。
在我的AppConfig中：

public static final String CREATE_POST = "created_post";

在活动A中实现所有这些东西：

StringRequest request = new StringRequest(Request.Method.POST, AppConfig.MYURL, new Response.Listener< String> (){ @Override public void onResponse(String response) {Intent intent = new Intent(AppConfig.CREATE_POST); intent.putExtra("myId",myId); intent.putExtra("userId",userId); intent.putExtra("username",username); LocalBroadcastManager.getInstance(this).sendBroadcast(intent); }

在带有应该接收数据的片段中我已经实现了这个：

private BroadcastReceiver broadcasterReceiver; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {//..other code herebroadcasterReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { if(intent.getAction().equals(AppConfig.CREATE_POST)){ Log.d("Broadcast","get called") //HERE I get the intent here } } }//I already register the boardcast in onResume() and onPause() @Override public void onResume() { super.onResume(); //register the broadcaster LocalBroadcastManager.getInstance(getActivity()).registerReceiver(broadcasterReceiver, new IntentFilter(AppConfig.CREATE_POST)); }@Override public void onPause() { super.onPause(); //unregister the broadcaster LocalBroadcastManager.getInstance(getActivity()).unregisterReceiver(broadcasterReceiver); }

我还记得什么？为了使这项工作。
答案首先，在包装的任何地方创建一个interface。例如 -

public interface SyncDataListener { void refreshDashboard(String myId, String username, String userId); }

然后在您的Activity中，创建一个全局声明和setter / resetter方法，如 -

private SyncDataListener syncDataListener; public void setSyncDataListener(SyncDataListener syncDataListener) { this.syncDataListener = syncDataListener; }public void resetSyncDataListener(){ syncDataListener = null; }

【Android如何成功截击请求，如何将数据从Activity传递到Fragment（）】在你的片段中接下来实现上面的interface并重写方法，如 -

public class DashboardFragment extends Fragment implements SyncDataListener { @Override public void refreshDashboard(String myId, String username, String userId) { //Your code that deals with the data received from activity } }

同样在Fragment的onAttach(Context context)方法中调用在活动中创建的setter方法，如 -

@Override public void onAttach(Context context) { super.onAttach(context); ((MainActivity) getActivity()).setSyncDataListener(this); }

还要确保在Fragment被破坏时重置侦听器实例，如 -

@Override public void onDestroyView() { super.onDestroyView(); ((MainActivity) getActivity()).resetSyncDataListener(); }

现在，无论何时您需要将数据从Activity发送到Fragment，您都可以致电 -

if (syncDataListener != null) { syncDataListener.refreshDashboard(myId, username, userId); }

另一答案使用此代码，这是我身边的工作：

private BroadcastReceiver broadcasterReceiver; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {//..other code herebroadcasterReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { if(intent.getAction().equals(AppConfig.CREATE_POST)){ Log.d("Broadcast","get called") //HERE I get the intent here } } }//I already register the boardcast in onResume() and onPause() @Override public void onResume() { super.onResume(); //register the broadcaster LocalBroadcastManager.getInstance(getActivity()).registerReceiver(broadcasterReceiver, new IntentFilter(AppConfig.CREATE_POST)); }@Override public void onPause() { super.onPause(); //unregister the broadcaster LocalBroadcastManager.getInstance(getActivity()).unregisterReceiver(broadcasterReceiver); }

使用此代码注册广播