我想使用Intent并想移到另一个viewpager类，而我正在使用Intent来做到这一点
private void gotInvoiceClass(String fname) {
Intent goToUpdate = new Intent (mContext,Invoices.class);
goToUpdate.putExtrka("FIRSTNAME", fname);
mContext.startActivity(goToUpdate);
}
我知道上面的方法是用来从类转移到活动的；为什么在从viewpager类使用意图到另一个viewpager类的情况下无法使用此方法。 这是我完整的视图寻呼机回收器适配器类
public class ClientRecyclerAdapter extends RecyclerView.Adapter<ClientRecyclerAdapter.ClientViewHolder> {
private List<GetSetClientsDetail> listOrders;
Context mContext;
RecyclerView mRecyclerView;
View itemView;
public ClientRecyclerAdapter(List<GetSetClientsDetail> listOrders, RecyclerView recyclerView) {
this.listOrders = listOrders;
mRecyclerView = recyclerView;
}
@Override
public ClientViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
mContext = parent.getContext();
itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.items_clients_table, parent, false);
return new ClientViewHolder(itemView);
}
public class ClientViewHolder extends RecyclerView.ViewHolder {
public TextView lblName;
public TextView lblRoute;
public TextView lblType;
public TextView lblCName;
public TextView lblContact;
RelativeLayout clientitemslayout;
public ClientViewHolder(View view) {
super(view);
lblName = view.findViewById(R.id.lblBName);
lblRoute = view.findViewById(R.id.lblRoute);
lblType = view.findViewById(R.id.lblType);
lblCName = view.findViewById(R.id.lblCName);
lblContact = view.findViewById(R.id.lblContact);
clientitemslayout = view.findViewById(R.id.listclientsitems);
}
}
@Override
public void onBindViewHolder(ClientViewHolder holder, final int position) {
holder.lblName.setText(listOrders.get(position).getFNAME());
holder.lblRoute.setText(listOrders.get(position).getROUTE());
holder.lblType.setText(listOrders.get(position).CNIC);
holder.lblCName.setText(listOrders.get(position).getLNAME());
holder.lblContact.setText(listOrders.get(position).getCONTACT());
holder.clientitemslayout.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
displayingAlertDialog(position);
return false;
}
});
}
@Override
public int getItemCount() {
Log.v(ClientRecyclerAdapter.class.getSimpleName(), "" + listOrders.size());
return listOrders.size();
}
private void displayingAlertDialog(final int position) {
final GetSetClientsDetail getSetClientsDetail= new GetSetClientsDetail();
AlertDialog.Builder builder = new AlertDialog.Builder(itemView.getContext());
builder.setTitle("Choose Option");
builder.setMessage("Add Client Invoice?");
builder.setPositiveButton("Add", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
gotInvoiceClass(listOrders.get(position).getFNAME());
dialog.cancel();
}
});
builder.setNeutralButton("Remove", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//go to Remove Item
DatabaseHelper dbHelper = new DatabaseHelper(mContext);
dbHelper.deletePersonRecord(listOrders.get(position).getFNAME(), mContext);
listOrders.remove( position);
notifyItemRemoved(position);
notifyItemRangeChanged(position, listOrders.size());
notifyDataSetChanged();
dialog.cancel();
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
AlertDialog alert11 = builder.create();
alert11.show();
}
private void gotInvoiceClass(String fname) {
Intent goToUpdate = new Intent (mContext,Invoices.class);
goToUpdate.putExtra("FIRSTNAME", fname);
mContext.startActivity(goToUpdate);
}
}
我想做的是，当我单击在适配器类中实现的对话框时，移到另一个视图寻呼机类。
谢谢
这是我的错误日志
android.content.ActivityNotFoundException: Unable to find explicit activity class {com.dspak.erpmini/com.dynamicsolution.pakistan.Invoices}; have you declared this activity in your AndroidManifest.xml?
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1541)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1416)
at android.app.Activity.startActivityForResult(Activity.java:3351)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:767)
at android.app.Activity.startActivityForResult(Activity.java:3312)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:754)
at android.app.Activity.startActivity(Activity.java:3522)
at android.app.Activity.startActivity(Activity.java:3490)
at com.dynamicsolution.pakistan.ClientRecyclerAdapter.gotupdateuserActivity(ClientRecyclerAdapter.java:133)
at com.dynamicsolution.pakistan.ClientRecyclerAdapter.access$200(ClientRecyclerAdapter.java:21)
at com.dynamicsolution.pakistan.ClientRecyclerAdapter$2.onClick(ClientRecyclerAdapter.java:99)
这是我的客户班
public class Clients extends Fragment {
RecyclerView recyclerViewClients;
Button btnAll;
SearchView searchViewclient;
ClientRecyclerAdapter clientRecyclerAdapter;
List<GetSetClientsDetail> listclients;
DatabaseHelper databaseHelper;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.clients, container, false);
btnAll=view.findViewById(R.id.searchallclients);
recyclerViewClients=view.findViewById(R.id.recyclerviewallclients);
searchViewclient=view.findViewById(R.id.searchclient);
listclients = new ArrayList<>();
clientRecyclerAdapter = new ClientRecyclerAdapter(listclients,recyclerViewClients);
recyclerViewClients.setItemAnimator(new DefaultItemAnimator());
recyclerViewClients.setItemAnimator(new DefaultItemAnimator()); //multi copy paste!
recyclerViewClients.setLayoutManager(new LinearLayoutManager(getContext()));
recyclerViewClients.setHasFixedSize(true);
recyclerViewClients.setAdapter(clientRecyclerAdapter);
databaseHelper = new DatabaseHelper(getActivity());
searchViewclient.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
SearchSQliteClientData();
}
});
btnAll.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
getClientFromSqlite();
}
});
return view;
}
@SuppressLint("StaticFieldLeak")
private void SearchSQliteClientData() {
new AsyncTask<Void, Void, Void>() {
@Override
protected Void doInBackground(Void... params) {
listclients.clear();
listclients.addAll(databaseHelper.SearchClientsData("A"));
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
clientRecyclerAdapter.notifyDataSetChanged();
}
}.execute();
}
@SuppressLint("StaticFieldLeak")
private void getClientFromSqlite() {
new AsyncTask<Void, Void, Void>() {
@Override
protected Void doInBackground(Void... params) {
listclients.clear();
listclients.addAll(databaseHelper.getAllClientsData());
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
clientRecyclerAdapter.notifyDataSetChanged();
}
}.execute();
}
}
这是我包含viewpagers的活动。
public class MainFragment extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_fragment);
Toolbar toolbar = findViewById(R.id.toolbar);
toolbar.setTitle("Dynamic ERPMini");
TabLayout tabLayout = findViewById(R.id.tab_layout);
tabLayout.addTab(tabLayout.newTab().setText("Clients"));
tabLayout.addTab(tabLayout.newTab().setText("Products"));
tabLayout.addTab(tabLayout.newTab().setText("Invoices"));
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
final ViewPager viewPager = findViewById(R.id.pager);
final PagerAdapter adapter = new PagersAdapter(getSupportFragmentManager(), tabLayout.getTabCount());
viewPager.setAdapter(adapter);
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
}
}
答案 0 :(得分：1)
您不能使用intent打开片段类。
您可以做的是在selectTab中创建一个MainFragment函数，然后从gotInvoiceClass函数中调用它。
MainFragment
public void selectTab(int position, String fname) {
this.fname = fname;
viewPager.setCurrentItem(position);
}
public String getMyData() {
return fname;
}
修改gotInvoiceClass如下：
private void gotInvoiceClass(String fname) {
MainFragment main = (MainFragment) mContext;
main.selectTab(2, fname);
}
在Invoices类中，您可以从fname获得MainFragment。
发票
MainFragment activity = (MainFragment) getActivity();
String name = activity.getMyData();
EdtName.setText(name);