public class HomeFragment extends BasePageFragment {
private Unbinder unbinder;
// #BindView(R.id.fab)
// FloatingActionButton mFab;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_homepage, container, false);
ImageButton ImageButton = (ImageButton) FindViewById (R.id.imageButton);
ImageButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Uri uri = Uri.parse("https://play.google.com/store/apps/details?id=com.mowmo.minimale");
startActivity(new Intent(Intent.ACTION_VIEW, uri));
}
});
}
Your problem starts here:
return inflater.inflate(R.layout.fragment_homepage, container, false);
None of the code following this statement will ever execute since you've already returned the inflated View. Change it to this:
View rootview = inflater.inflate(R.layout.fragment_homepage, container, false);
ImageButton ImageButton = (ImageButton) rootview.findViewById (R.id.imageButton);
ImageButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Uri uri = Uri.parse("https://play.google.com/store/apps/details?id=com.mowmo.minimale");
startActivity(new Intent(Intent.ACTION_VIEW, uri));
}
});
return rootview;
This inflates the view and allows you to access the child views on the inflated view (using the findViewById method) before returning the view.
Related
I'm trying to get a Toast to appear in a tabbed fragment when an EditText is left empty.
Here is my MainActivity's onCreate:
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
SectionsPagerAdapter sectionsPagerAdapter = new SectionsPagerAdapter(this, getSupportFragmentManager());
ViewPager viewPager = findViewById(R.id.view_pager);
viewPager.setAdapter(sectionsPagerAdapter);
TabLayout tabs = findViewById(R.id.tabs);
tabs.setupWithViewPager(viewPager);
}
}
My Tabbed Fragment works fine with this code:
public class SignupFragment extends Fragment {
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_signup, container, false);
}
}
But it doesn't work when creating the Toast like this:
public class SignupFragment extends Fragment {
EditText textFillCheck;
Button submitCheck;
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
submitCheck = (Button) submitCheck.findViewById(R.id.signupBtn);
textFillCheck = (EditText) textFillCheck.findViewById(R.id.signupFirstName);
submitCheck.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (TextUtils.isEmpty(textFillCheck.getText().toString())) {
Intent intent = new Intent(getActivity(), SignupFragment.class);
startActivity(intent);
Toast.makeText(getActivity(), "Please fill in all fields", Toast.LENGTH_SHORT).show();
}
else{Toast.makeText(getActivity(), textFillCheck.getText().toString(), Toast.LENGTH_LONG).show();
}
}
});
return inflater.inflate(R.layout.fragment_signup, container, false);
}
}
You're not accessing the views of your Fragment's layout so the layout you're returning in onCreateView() doesn't have your logic attached to it. You should set up your Fragment to look something like this:
public class SignupFragment extends Fragment {
EditText textFillCheck;
Button submitCheck;
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState){
// Store a reference to your Fragment's inflated layout
View root = inflater.inflate(R.layout.fragment_signup, container, false);
// Use the reference to access your Fragment's views
submitCheck = (Button) root.findViewById(R.id.signupBtn);
textFillCheck = (EditText) root.findViewById(R.id.signupFirstName);
submitCheck.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if(TextUtils.isEmpty(textFillCheck.getText().toString())) {
Toast.makeText(getActivity(), "Please fill in all fields", Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(getActivity(), textFillCheck.getText().toString(), Toast.LENGTH_LONG).show();
}
}
});
// Return the inflated layout
return root;
}
}
I am amazed why your code is not having any error like VIEW DOES NOT EXIST or NULL POINTER EXCEPTION because
First, you change the activity before showing the Toast secondly you are inflating the layout after the initialization of views and not getting the context properly, Right way of doing what you are trying to achieve is using OnViewCreated() like this
#Override
public void onViewCreated(#NonNull View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
submitCheck = (Button) view.findViewById(R.id.signupBtn);
textFillCheck = (EditText) view.findViewById(R.id.signupFirstName);
submitCheck.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (TextUtils.isEmpty(textFillCheck.getText().toString())) {
Toast.makeText(getActivity(), "Please fill in all fields",
Toast.LENGTH_SHORT).show();
Intent intent = new Intent(getActivity(), SignupFragment.class);
startActivity(intent);
}
else{
Toast.makeText(getActivity(), textFillCheck.getText().toString(),
Toast.LENGTH_LONG).show();
}
}
});
}
Need to create a button to go to a new activity in Fragments. I tried with the following code but its not working, This is my code,
public class UserFragment extends Fragment {
Button mTextuserinfo;
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_user,container,false);
mTextuserinfo = (Button) findViewById(R.id.userinfo_user);
mTextuserinfo.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(UserFragment.this, userinformation.class);
startActivity(i);
}
});
return view;
}
}
Use this in your onClick.
Intent i = new Intent(getActivity(), userinformation.class);
startActivity(i);
Also define your button like this:
mTextuserinfo = view.findViewById(R.id.userinfo_user);
Hello I want to move to another activity from my fragment. I ve tried almost every solution which I found, but after I press button my app is instantly closed. I am new in java, and i guess i need some help.
public class GalleryFragment extends Fragment {
private GalleryViewModel galleryViewModel;
Intent intent;
public View onCreateView(#NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_gallery, container, false);
intent = new Intent(GalleryFragment.this.getActivity(), HomeFragment.class);
final Button btn = (Button) rootView.findViewById(R.id.btn);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
startActivity(intent);
}
});
galleryViewModel =
ViewModelProviders.of(this).get(GalleryViewModel.class);
View root = inflater.inflate(R.layout.fragment_gallery, container, false);
final TextView textView = root.findViewById(R.id.text_gallery);
galleryViewModel.getText().observe(this, new Observer<String>() {
#Override
public void onChanged(#Nullable String s) {
textView.setText(s);
}
});
return root;
}
}
I'm assuming from this line:
intent = new Intent(GalleryFragment.this.getActivity(), HomeFragment.class);
That you're trying to launch a Fragment, not an Activity. In order to transition to another Fragment, replace your Intent with:
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
getFragmentManager()
.beginTransaction()
.replace(...) //Or add, depends on your use case
.commit();
}
});
I am making a program that will include a Spinner within a fragment rather than an activity. I have researched why this may be crashing, but to no avail. My initial concern was a .getView().findViewById(), but now I'm not so sure that's the problem because . Here's the code.
public class Add extends Fragment {
public Add() {
// Required empty public constructor
}
ArrayList<String> ingredients = new ArrayList<>();
SpinnerDialog spinnerDialog;
Button add;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
add = (Button) getView().findViewById(R.id.add);
add.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
spinnerDialog.showSpinerDialog();
}
});
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_add, container, false);
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
spinnerDialog = new SpinnerDialog(getActivity(), ingredients, "Select An Ingredient");
spinnerDialog.bindOnSpinerListener(new OnSpinerItemClick() {
#Override
public void onClick(String Ingredient, int i) {
Toast.makeText(Add.super.getContext(), "Selected ", Toast.LENGTH_SHORT).show();
}
});
Without seeing the stack trace I cannot say for sure, but I suspect this line is crashing:
add = (Button) getView().findViewById(R.id.add);
This is because getView() will return the View instance returned by onCreateView()... but you're currently inside onCreateView(), so getView() will return null.
You can re-write your onCreateView() as follows and it should work.
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.fragment_add, container, false);
add = (Button) root.findViewById(R.id.add);
add.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
spinnerDialog.showSpinerDialog();
}
});
return root;
}
I'm new to Java and android and I'm having some issues.
I'm using navigation drawer activity with each menu item linked to a fragment. From the fragment, I'm trying to setup another menu using buttons that link to more Activities.
Here is my fragment that I want to link to more activities:
package com.notimportant
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
/**
* A simple {#link Fragment} subclass.
*/
public class About extends Fragment {
public About() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_about, container, false);
}
Button button = (Button) rootView.findViewById(R.id.buttonDevs);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(getActivity(), DevsActivity.class);
startActivity(intent);
}
});
}
I'm getting these errors:
Error:(35, 30) error: <identifier> expected
Error:(35, 31) error: illegal start of type
Error:(35, 34) error: ')' expected
Error:(35, 39) error: ';' expected
Error:(35, 40) error: invalid method declaration; return type required
Error:(37, 28) error: ';' expected
Error:(37, 38) error: ';' expected
Error:(41, 6) error: illegal start of type
rootView is highlighted red "Cannot resolve symbol rootView"
setOnClickListener is highlighted red "Cannot resolve symbol
setOnClickListener"
#Override is highlighted red... "Annotations are not allowed here"
view is highlighted red "Cannot resolve symbol view"
My button id is buttonDevs. The activity I want to go to is called DevsActivity.
What am I doing wrong?
You have to put Button inside rootView.
Change this
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_about, container, false);
}
Button button = (Button) rootView.findViewById(R.id.buttonDevs);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(getActivity(), DevsActivity.class);
startActivity(intent);
}
});
to this
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View rootView = inflater.inflate(R.layout.fragment_about, container, false);
Button button = (Button) rootView.findViewById(R.id.buttonDevs);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(getActivity(), DevsActivity.class);
startActivity(intent);
}
});
return rootView;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view=inflater.inflate(R.layout.fragment_about, container, false);
Button button = (Button) view.findViewById(R.id.buttonDevs);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(getActivity(), DevsActivity.class);
startActivity(intent);
}
});
return view;
}
Change this:
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_about, container, false);
}
Button button = (Button) rootView.findViewById(R.id.buttonDevs);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(getActivity(), DevsActivity.class);
startActivity(intent);
}
});
on this:
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_about, container, false);
Button button = (Button) rootView.findViewById(R.id.buttonDevs);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(getActivity(), DevsActivity.class);
startActivity(intent);
}
});
return rootView;
}
Put your button inside onCreateView() like this -
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_about, container, false);
Button button = (Button) view.findViewById(R.id.buttonDevs);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(getActivity(), DevsActivity.class);
startActivity(intent);
}
});
return view;
}
your code must be inside the onViewCreated() method since you cant interact with the Views from onCreateView() method
#Override
public void onViewCreated(View rootView, #Nullable Bundle savedInstanceState) {
Button button = (Button) rootView.findViewById(R.id.buttonDevs);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(getActivity(), DevsActivity.class);
startActivity(intent);
}
});
}
good luck