[英]Intent not working in recyclerview onclick
I created a recyclerview that displays a list of users from firebase, i want to send user to another activity whenever they clicks on an item in the list but it kept saying "CurrentActivity is not an enclosing tag" whenever i call on intent.我创建了一个 recyclerview,显示来自 firebase 的用户列表,我想在用户点击列表中的项目时将用户发送到另一个活动,但每当我调用意图时它一直说“CurrentActivity 不是封闭标签” 。 Heres the code
这是代码
public class UserActivity extends AppCompatActivity {
private Toolbar mToobar;
private RecyclerView recyclerView;
private UserAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user);
mToobar = findViewById(R.id.toolbar);
setSupportActionBar(mToobar);
Objects.requireNonNull(getSupportActionBar()).setTitle("Find New Friends");
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
mToobar.setTitleTextColor(Color.parseColor("WHITE"));
recyclerView = findViewById(R.id.recycler);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
//recyclerView.setHasFixedSize(true);
FirebaseRecyclerOptions<UserModel> options = new FirebaseRecyclerOptions.Builder<UserModel>()
.setQuery(FirebaseDatabase.getInstance().getReference().child("Users"), UserModel.class)
.build();
adapter = new UserAdapter(options);
recyclerView.setAdapter(adapter);
recyclerView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent i = new Intent(UserActivity.this, ProfileActivity.class);
startActivity(i);
}
});
}
@Override
protected void onStart() {
super.onStart();
adapter.startListening();
}
@Override
protected void onStop() {
super.onStop();
adapter.stopListening();
}
}
Here's the adapter class这是适配器类
public class UserAdapter extends FirebaseRecyclerAdapter<UserModel, UserAdapter.UserViewHolder> {
/**
* Initialize a {@link RecyclerView.Adapter} that listens to a Firebase query. See
* {@link FirebaseRecyclerOptions} for configuration options.
*
* @param options
*/
public UserAdapter(@NonNull FirebaseRecyclerOptions<UserModel> options) {
super(options);
}
@Override
protected void onBindViewHolder(@NonNull UserViewHolder holder, int position, @NonNull UserModel model) {
holder.mName.setText(model.getName());
holder.mStatus.setText(model.getStatus());
Picasso.get().load(model.getImage()).placeholder(R.drawable.avatar).into(holder.mImage);
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(UserActivity.this, ProfileActivity.class);
startActivity(intent);
//heres the error, UserActivity is not an enclosing tag
}
});
}
@NonNull
@Override
public UserViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.single_user_layout, parent, false);
return new UserViewHolder(view);
}
class UserViewHolder extends RecyclerView.ViewHolder{
TextView mName, mStatus;
CircleImageView mImage;
public UserViewHolder(@NonNull View itemView) {
super(itemView);
mName = itemView.findViewById(R.id.user_displayname);
mStatus = itemView.findViewById(R.id.user_status);
mImage = itemView.findViewById(R.id.user_photo);
}
}
}
This is the model class这是模型类
public class UserModel {
public String name;
String image;
String status;
public UserModel() {
}
@Override
public String toString() {
return "UserModel{" +
"name='" + name + '\'' +
", image='" + image + '\'' +
", status='" + status + '\'' +
'}';
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
}
Can someone help me on better way on how to implement onClickListener
, please?有人可以帮助我更好地实现
onClickListener
吗?
use holder.itemView.getContext()
instead of UserActivity.this
in your adapter classs.在您的适配器类中使用
holder.itemView.getContext()
而不是UserActivity.this
。
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Context context = holder.itemView.getContext();
Intent intent = new Intent(context, ProfileActivity.class);
context.startActivity(intent);
}
})
And removed this block of code because you need to set click listeners on individual views within the RecyclerView, rather than the RecyclerView as a whole.并删除了这段代码,因为您需要在 RecyclerView 中的各个视图上设置单击侦听器,而不是整个 RecyclerView。
recyclerView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent i = new Intent(UserActivity.this, ProfileActivity.class);
startActivity(i);
}
});
You can also send the View.onClickListener to the constructor of the list something like:您还可以将 View.onClickListener 发送到列表的构造函数,例如:
View.onClickListener listener; View.onClickListener 监听器;
public UserAdapter(@NonNull FirebaseRecyclerOptions<UserModel> options, View.onClickListener listener) {
super(options);
this.listener = listener;
}
... ...
holder.itemView.setOnClickListener(listener); //this part will be in your onBindViewHolder
in your activity you need to implement the interface View.onClickListener and in在您的活动中,您需要实现接口 View.onClickListener 并在
@Override
public void onClick(View v){
Intent i = new Intent(UserActivity.this, ProfileActivity.class);
startActivity(i);
}
and when you create your adapter use the following code:创建适配器时,请使用以下代码:
FirebaseRecyclerOptions<UserModel> options = new FirebaseRecyclerOptions.Builder<UserModel>()
.setQuery(FirebaseDatabase.getInstance().getReference().child("Users"), UserModel.class)
.build();
adapter = new UserAdapter(options,this);
You are passing UserActivity as a current activity.您将 UserActivity 作为当前活动传递。 Pls pass context to your adapter constructor.
请将上下文传递给您的适配器构造函数。
public class UserAdapter extends RecyclerView.Adapter<UserAdapter.MyViewHolder>() {
private ArrayList<UserResult> userList;
private Activity mActivity;
public AdapterChatList(Activity mActivity, ArrayList<UserResult> mUserList) {
this.mActivity = mActivity;
this.userList = mUserList;
}
}
Set context to your startactivity.为您的 startactivity 设置上下文。
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(mActivity,ProfileActivity.class);
startActivity(intent);
//Pass context object as your current activity
}
});
Pass context in your activity where you define the adapter.在您定义适配器的活动中传递上下文。
mUserAdapter = new UserAdapter (getActivity(), userArrayList);
recyclerView.setAdapter(mUserAdapter );
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