将数据发送到接收方并获取片段
我想接收从Adapter传递的数据,但它甚至没有被调用
接收器类(该课程在Fragement中)
public class DataReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
try {
if (intent != null) {
Category category = (Category) intent.getSerializableExtra("category");
Log.e("data", category.getName());
}
} catch (Exception e) {
Log.e("catch", e.toString());
}
}
}
我在下面的片段中创建了接收器,并在这里注册和取消注册接收器。
AddServiceFragment类(接收器在其中)
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
bindViews();
dataReceiver = new DataReceiver();
filter = new IntentFilter("action");
}
@Override
public void onStart() {
super.onStart();
getActivity().registerReceiver(dataReceiver, filter);
}
public void onPause() {
// TODO Auto-generated method stub
super.onPause();
getActivity().unregisterReceiver(dataReceiver);
}
@Override
public void onResume() {
// TODO Auto-generated method stub
super.onResume();
getActivity().registerReceiver(dataReceiver, filter);
}
@Override
public void onDestroy() {
super.onDestroy();
getActivity().unregisterReceiver(dataReceiver);
}
我使用下面的代码将数据发送到接收器
适配器代码
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent in = new Intent(context, AddServiceFragment.DataReceiver.class);
in.setAction("action");
in.putExtra("category", category);
context.sendBroadcast(in);
}
});
答案 0 :(得分:0)
你使用错误的方式。请查看下面的示例代码。
片段类中的代码:
@Override
public void onResume() {
getActivity().registerReceiver(mReceiverLocation, new IntentFilter("data_action"));
super.onResume();
}
@Override
public void onPause() {
getActivity().unregisterReceiver(mReceiverLocation);
super.onPause();
}
private BroadcastReceiver mReceiverLocation = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
try {
Category category = (Category) intent.getSerializableExtra("category");
Log.e("data", category.getName());
} catch (Exception e) {
e.printStackTrace();
}
}
};
从适配器类调用:
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent in = new Intent("data_action");
in.putExtra("category", category);
context.sendBroadcast(in);
}
});
答案 1 :(得分:0)
看看这个: https://developer.android.com/training/basics/fragments/communicating.html 您可以通过主机活动在您的片段之间进行通信。
通常,您会希望一个片段与另一个片段进行通信,例如根据用户事件更改内容。所有Fragment-to-Fragment通信都是通过相关的Activity完成的。两个碎片永远不应该直接沟通。