I am loosely following a guide but I am using an onClickListener to start the search process. I am in the process of implementing a Loader here:
getSupportLoaderManager().restartLoader(0,queryBundle,this);
but when I put in ‘this’ it brings up the following message:
Wrong 3rd argument type. Found: 'android.view.View.OnClickListener', required: 'android.support.v4.app.LoaderManager.
LoaderCallbacks'
I am loathed to change from an onClickListener to a onClick method as the guide suggests, is there a way to implement the Loader in the onClickListener?
The code is below:
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.app.LoaderManager;
import android.app.LoaderManager.LoaderCallbacks;
import android.content.Loader;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class GoogleBookActivity extends AppCompatActivity implements
LoaderManager.LoaderCallbacks<String>{
private static final String TAG = GoogleBookActivity.class.getSimpleName();
private EditText mEditText;
private BookAdapter mAdapter;
private Button bookSearch;
private TextView mTitle, mAuthor;
//URL link to the API
private static final String GOOGLE_BOOKS_REQUEST_URL = "https://www.googleapis.com/books/v1/volumes?q=";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_google_book);
mTitle = (TextView) findViewById(R.id.book_title);
mAuthor = (TextView) findViewById(R.id.book_author);
bookSearch = (Button) findViewById(R.id.searchbutton);
mEditText = (EditText) findViewById(R.id.search_text);
bookSearch.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Initialise String queryText
String queryText = mEditText.getText().toString();
//For Hiding the keyboard when the search button is clicked
InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
inputManager.hideSoftInputFromInputMethod(getCurrentFocus().getWindowToken(),InputMethodManager.HIDE_NOT_ALWAYS);
//For Checking the network status and empty search field case
ConnectivityManager connMgr = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
if(networkInfo !=null && networkInfo.isConnected() && queryText.length()!=0){
//new FetchBook(mTitle, mAuthor).execute(queryText);
}
Log.i(TAG, "Searched " + queryText);
if(queryText.length() != 0){
new FetchBook(mTitle, mAuthor).execute(queryText);
mAuthor.setText("");
mTitle.setText(R.string.loading);
//We replace the call to execute the fetchbook task with a call to restartLoader(), passing in
// the querystring you get from the EditText in the Bundle.
Bundle queryBundle = new Bundle();
queryBundle.putString("queryText", queryText);
getSupportLoaderManager().restartLoader(0,queryBundle,this);
}else {
if(queryText.length() == 0){
mAuthor.setText("");
mTitle.setText("Please enter a search term.");
}else{
mAuthor.setText("");
mTitle.setText("Please check your network connection and try again.");
}
}
}
});
}
#Override
public Loader<String> onCreateLoader(int i, Bundle bundle) {
return null;
}
#Override
public void onLoadFinished(Loader<String> loader, String s) {
}
#Override
public void onLoaderReset(Loader<String> loader) {
}
}
this refers to the encapsulating OnClickListener:
bookSearch.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// You are now inside an anonymous class extending from
// OnClickListener. 'this' now refers to this very instance
// of the OnClickListener
}
});
In order to refer to the encapsulating GoogleBookActivity, just type that class name in front:
getSupportLoaderManager().restartLoader(0, queryBundle, GoogleBookActivity.this);
Related
I got an while i am doing my code
My Error is :
Unable to instantiate activity ComponentInfo{com.example.example/com.example.sample.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.pm.ApplicationInfo android.content.Context.getApplicationInfo()' on a null object reference
import androidx.appcompat.app.AppCompatActivity;
import android.app.ActivityManager;
import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import com.jaredrummler.android.processes.AndroidProcesses;
import com.jaredrummler.android.processes.models.AndroidAppProcess;
import com.jaredrummler.android.processes.models.Stat;
import com.jaredrummler.android.processes.models.Statm;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
public class MainActivity extends AppCompatActivity {
List<RunningApplication> runningApplicationList = new ArrayList<>();
#Override
protected void onCreate(Bundle savedInstanceState) {
Button send = (Button) findViewById(R.id.button);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
send.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
getRunningApps();
}
});
}
public void getRunningApps() {
List<AndroidAppProcess> processes = AndroidProcesses.getRunningAppProcesses();
PackageManager pm = getPackageManager();
for (AndroidAppProcess pro : processes) {
try {
String proccessname = pro.name;
Stat stat = pro.stat();
int pid = stat.getPid();
int parentProccessId = stat.ppid();
long startTime = stat.stime();
int policy = stat.policy();
char state = stat.state();
Statm statm = pro.statm();
long totalSizeofProccess = statm.getSize();
long residentSetSize = statm.getResidentSetSize();
PackageInfo packageInfo = pro.getPackageInfo(MainActivity.this,0);
//get the app name
String appName = packageInfo.applicationInfo.loadLabel(pm).toString();
//Get the app icon
Drawable appIcon = packageInfo.applicationInfo.loadIcon(pm);
//Add it to your list of running app
RunningApplication ra = new RunningApplication(appName,startTime,String.valueOf(pid),appIcon);
runningApplicationList.add(ra);
Log.e("APPNAME : ", appName);
} catch (Exception ex) {
Log.e("APPNAME.CONTEXT",ex.getMessage());
}
}
}
}```
You're getting NPE because you are trying to create a new instance of your button before calling setContentView(R.layout.activity_main);
This is what is causing your app to crash.
Consider changing your onCreate method to this snippet below:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button send = (Button) findViewById(R.id.button);
send.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
getRunningApps();
}
});
}
This question already has an answer here:
I need to call data from fireabse
(1 answer)
Closed 2 years ago.
I am getting this error find view by id(int) in appcompatActivity cannot be applied to () and it comes on line 65. I don't know how to fix it. I am calling data from firebase firestore and i am trying to print that value in the text view.
package net.simplifiedlearning.firebaseauth;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.firestore.DocumentReference;
import com.google.firebase.firestore.DocumentSnapshot;
import com.google.firebase.firestore.FirebaseFirestore;
public class ProfileActivity extends AppCompatActivity implements View.OnClickListener {
FirebaseDatabase database = FirebaseDatabase.getInstance();
FirebaseFirestore db = FirebaseFirestore.getInstance();
final String MyPREFERENCES = "MyPrefs";
Button AddChoreButton;
TextView totalPoints;
SharedPreferences sharedpreferences;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_profile);
AddChoreButton = (Button) findViewById(R.id.AddChoreButton);
totalPoints = (TextView) findViewById(R.id.totalPoints);
findViewById(R.id.AddChoreButton).setOnClickListener(this);
preparepointdata();
}
private void preparepointdata() {
final String MyPREFERENCES = "MyPrefs";
sharedpreferences = getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);
String parentEmail = sharedpreferences.getString("parentEmail", null);
String username = sharedpreferences.getString("username", null);
db.collection("profiles").document(username)
.get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
#Override
public void onComplete(#NonNull Task<DocumentSnapshot> task) {
if (task.isSuccessful()) {
DocumentSnapshot document = task.getResult();
if (document.exists()) // if username is present
{
findViewById().setText(document.getData().get("totalPoints").toString());//id of textView
} else {
//add code (user not found/registered)
}
} else {
}
}
});
}
#Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.AddChoreButton:
startActivity(new Intent(ProfileActivity.this, AddChoreActivity.class));
}
}
}
the line that has an error is this line findViewById().setText(document.getData().get("totalPoints").toString());//id of textView. Please offer solutions if you can. Thank you
You have to add an id to findViewById()
For example :
findViewById(R.id.total_points_tv).setText(document.getData().get("totalPoints").toString())
I am beginner. I have made a simple log in form in android studio. I face a fault in if condition. Please solve this.
If username box is empty then control should go in if(...) but it goes to else part and open next intent
code is here:
package com.android.dumbseraaz;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
private EditText uname;
private EditText pwd;
private Button login;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
uname = (EditText)findViewById(R.id.txt_userName);
pwd = (EditText)findViewById(R.id.txt_Password);
login = (Button)findViewById(R.id.button);
login.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
validate(uname.getText().toString(),pwd.getText().toString());
}
});
}
private void validate(String myuname, String Pswd) {
if(myuname == "")
{
uname.setText("user");
}
else if(Pswd == "")
{
pwd.setText("PasswordMe");
}
else {
Intent intent = new Intent(MainActivity.this, app_home.class);
startActivity(intent);
}
}
}
can anyone explain to me how can I create a new recycle and add items to that recycle view staring from another recycle view inside another activity?
Basically I want to create a shopping cart, for now, I retrieved the data from Firebase dataset and displayed it inside a recycle view but now I would like to send this data to the shopping cart(the shopping cart is inside another activity), I'm able to send the data but I can't understand how to display the data inside the new recycle view of this new activity. I need this because I want to see the items that I added to the shopping list so then I can pay.
Below I will attach a photo to explain myself better.
My problem is that I can't understand how to add the sent data to a recycle view again in the new activity.
I'm new to android so it's the first time I'm doing this thing.
Thank you in advance for your help.
My code:
SearchItemsActivity :
package com.example.ipill;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.content.Context;
import android.content.Intent;
import android.nfc.Tag;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.TextView;
import android.widget.Toast;
import com.firebase.ui.database.FirebaseRecyclerAdapter;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.Query;
import java.util.ArrayList;
import java.util.List;
public class FirebaseSearch extends AppCompatActivity {
private EditText mSearchField;
private ImageButton mSearchBtn;
private ImageButton AddToCart;
private ImageButton Cart;
String searchText="";
private RecyclerView mResultList;
private DatabaseReference mUserDatabase;
private static ArrayList<Users> arrayList = new ArrayList<>();
public static int cart_count = 0;
RecyclerView productRecyclerView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_firebasesearch);
mUserDatabase = FirebaseDatabase.getInstance().getReference("Users");
mSearchField = findViewById(R.id.search_field);
mSearchBtn = findViewById(R.id.search_btn);
mResultList = findViewById(R.id.result_list_cart);
AddToCart = findViewById(R.id.imageButton2);
Cart = findViewById(R.id.cartButton);
mResultList.setHasFixedSize(true);
mResultList.setLayoutManager(new LinearLayoutManager(this));
mSearchBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
searchText = mSearchField.getText().toString();
firebaseUserSearch(searchText);
}
});
Cart.setOnClickListener(new View.OnClickListener() {
private Object Tag="Activity";
#Override
public void onClick(View v) {
if (cart_count < 1) {
} else {
startActivity(new Intent(FirebaseSearch.this, CartActivity.class));
}
}
});
}
private void firebaseUserSearch(String searchText) {
Toast.makeText(FirebaseSearch.this, "Started Search", Toast.LENGTH_LONG).show();
Query firebaseSearchQuery =
mUserDatabase.orderByChild("Name").startAt(searchText).endAt(searchText + "\uf8ff");
FirebaseRecyclerAdapter<Users, UsersViewHolder> firebaseRecyclerAdapter = new
FirebaseRecyclerAdapter<Users, UsersViewHolder>(
Users.class,
R.layout.list_layout,
UsersViewHolder.class,
firebaseSearchQuery
) {
#Override
protected void populateViewHolder(UsersViewHolder viewHolder, Users model, int position) {
viewHolder.getDetails(model.getName(), model.getSurname(),model.getPrice());
viewHolder.setDetails(model.getName(), model.getSurname(),model.getPrice());
}
};
mResultList.setAdapter(firebaseRecyclerAdapter);
}
#Override
protected void onStart() {
super.onStart();
invalidateOptionsMenu();
}
// View Holder Class
public static class UsersViewHolder extends RecyclerView.ViewHolder {
View mView;
String nome;
String surname;
Long prezzo;
public UsersViewHolder(View itemView) {
super(itemView);
mView = itemView;
ImageButton addToCart = (ImageButton)mView.findViewById(R.id.imageButton2);
addToCart.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
cart_count++;
Context context = v.getContext();
Intent intent = new Intent(context, CartActivity.class);
intent.putExtra("Name",nome);
intent.putExtra("Surname",surname);
intent.putExtra("Prezzo",Long.toString(prezzo));
context.startActivity(intent);
}
});
}
public void getDetails(String name,String cognome,Long price){
nome=name;
surname=cognome;
prezzo=price;
}
public void setDetails(String name, String surname, Long price) {
TextView user_name = (TextView) mView.findViewById(R.id.name_text);
TextView user_surname = (TextView)mView.findViewById(R.id.status_text);
TextView user_price = (TextView)mView.findViewById(R.id.price);
user_name.setText(name);
user_surname.setText(surname);
user_price.setText(Long.toString(price));
}
}
}
enter code here
The second activity where I receive the data and where I want to create the recycle view
package com.example.ipill;
import android.content.Context;
import android.os.Build;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.Toolbar;
import androidx.annotation.RequiresApi;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import java.util.ArrayList;
import java.util.Collection;
public class CartActivity extends AppCompatActivity {
public static TextView grandTotal;
public static int grandTotalplus;
// create a temp list and add cartitem list
public static ArrayList<Users> temparraylist;
RecyclerView cartRecyclerView;
Button proceedToBook;
Context context;
String name,surname,price;
private static ArrayList<Users> arrayList2 = new ArrayList<>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_cart);
context = this;
temparraylist = new ArrayList<>();
proceedToBook = findViewById(R.id.buyNow);
grandTotal = findViewById(R.id.TotalPrice);
cartRecyclerView=findViewById(R.id.cartList);
String passedArg = getIntent().getExtras().getString("Name");
name=passedArg;
String passedArg2 = getIntent().getExtras().getString("Surname");
surname=passedArg2;
String passedArg3 = getIntent().getExtras().getString("Price");
price=passedArg3;
System.out.println("DATA"+name+surname+price);
cartRecyclerView.setHasFixedSize(true);
cartRecyclerView.setLayoutManager(new LinearLayoutManager(this));
}
}
you can re use the cart adapter just implement a recylerView into new Activity and make the cart adater object and set it into the new reyclerView and it done
I am developing attendance system and i have a listview with students name i want to programatically check or uncheck the radio buttons in the listview when the scanned qr matchs the student name I tried to do it in the ontextchengeListner method of txtresult but the text is changing many time even in reading a single qr
This are my java classes
CustomAdapter.java
package com.attendance.olana.qr_scanner;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CompoundButton;
import android.widget.RadioButton;
import android.widget.TextView;
import java.util.ArrayList;
/**
* Created by olana on 23/03/2018.
*/
public class CustomAdapter extends BaseAdapter {
Context context;
String[] questionsList;
public static String message;
LayoutInflater inflter;
public static TextView question ;
public static RadioButton yes,no ;
public static ArrayList<String> selectedAnswers;
public CustomAdapter(Context applicationContext, String[] questionsList) {
this.context = context;
this.questionsList = questionsList;
// initialize arraylist and add static string for all the questions
selectedAnswers = new ArrayList<>();
for (int i = 0; i < questionsList.length; i++) {
selectedAnswers.add("Not Attempted");
}
inflter = (LayoutInflater.from(applicationContext));
}
#Override
public int getCount() {
return questionsList.length;
}
#Override
public Object getItem(int i) {
return null;
}
#Override
public long getItemId(int i) {
return 0;
}
#Override
public View getView(final int i, View view, ViewGroup viewGroup) {
view = inflter.inflate(R.layout.main, null);
// get the reference of TextView and Button's
question = (TextView) view.findViewById(R.id.question);
yes = (RadioButton) view.findViewById(R.id.yes);
no = (RadioButton) view.findViewById(R.id.no);
// perform setOnCheckedChangeListener event on yes button
yes.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// set Yes values in ArrayList if RadioButton is checked
if (isChecked)
selectedAnswers.set(i, "Present");
}
});
// perform setOnCheckedChangeListener event on no button
no.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// set No values in ArrayList if RadioButton is checked
if (isChecked)
selectedAnswers.set(i, "Absent");
}
});
// set the value in TextView
question.setText(questionsList[i]);
return view;
}
}
list.java
package com.attendance.olana.qr_scanner;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.ListView;
import android.widget.RadioButton;
import android.widget.Toast;
/**
* Created by olana on 23/03/2018.
*/
public class list extends AppCompatActivity {
ListView simpleList;
public static String[] questions;
Button submit,scan;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.list);
scan =(Button)findViewById(R.id.scan);
// get the string array from string.xml file
questions = getResources().getStringArray(R.array.student);
// get the reference of ListView and Button
simpleList = (ListView) findViewById(R.id.simpleListView);
submit = (Button) findViewById(R.id.submit);
// set the adapter to fill the data in the ListView
CustomAdapter customAdapter = new CustomAdapter(getApplicationContext(), questions);
simpleList.setAdapter(customAdapter);
scan.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i;
i = new Intent(list.this,MainActivity.class);
i.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
startActivity(i);
}
});
// perform setOnClickListerner event on Button
submit.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String message = "";
// get the value of selected answers from custom adapter
for (int i = 0; i < CustomAdapter.selectedAnswers.size(); i++) {
message = message + "\n" + (i + 1) + " " + CustomAdapter.selectedAnswers.get(i);
}
// display the message on screen with the help of Toast.
Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
}
});
}
}
MainActivity.java
package com.attendance.olana.qr_scanner;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Vibrator;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.util.SparseArray;
import android.view.Menu;
import android.view.MenuItem;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.vision.CameraSource;
import com.google.android.gms.vision.Detector;
import com.google.android.gms.vision.barcode.Barcode;
import com.google.android.gms.vision.barcode.BarcodeDetector;
import java.io.IOException;
import java.util.jar.Manifest;
public class MainActivity extends AppCompatActivity {
BarcodeDetector barcodeDetector;
SurfaceView camerapreview;
CameraSource cameraSource;
TextView txtresult;
String message;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button finish = (Button) findViewById(R.id.finish);
//Button scan = (Button) findViewById(R.id.scan);
finish.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
finish();
Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
}
});
camerapreview = (SurfaceView) findViewById(R.id.camerapreview);
txtresult = (TextView) findViewById(R.id.txtresult);
barcodeDetector = new BarcodeDetector.Builder(this)
.setBarcodeFormats(Barcode.QR_CODE)
.build();
cameraSource = new CameraSource
.Builder(this, barcodeDetector)
.setRequestedPreviewSize(640, 480)
.build();
//add event
camerapreview.getHolder().addCallback(new SurfaceHolder.Callback() {
#Override
public void surfaceCreated(SurfaceHolder holder) {
try {
cameraSource.start(camerapreview.getHolder());
} catch (IOException e) {
e.printStackTrace();
}
}
#Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
#Override
public void surfaceDestroyed(SurfaceHolder holder) {
cameraSource.stop();
}
});
barcodeDetector.setProcessor(new Detector.Processor<Barcode>() {
#Override
public void release() {
try {
cameraSource.start(camerapreview.getHolder());
} catch (IOException e) {
e.printStackTrace();
}
}
#Override
public void receiveDetections(Detector.Detections<Barcode> detections) {
final SparseArray<Barcode> qrcodes = detections.getDetectedItems();
if (qrcodes.size() != 0) {
txtresult.post(new Runnable() {
#Override
public void run() {
//create vibration
Vibrator vibrator = (Vibrator) getApplicationContext().getSystemService(Context.VIBRATOR_SERVICE);
vibrator.vibrate(100);
txtresult.setText(qrcodes.valueAt(0).displayValue);
//barcodeDetector.release();
}
});
}
}
});
}
}
Please tell me where i can implement these the programatically checking or unchecking the radio button when the name in the listview matchs the scanned qr please help me