Mixing
Android app crashes when using bundle to moving data from one to another using firestore
0
I am trying to move register number from MainActivity.java to Academics.java
I used navigation drawer to jump from one activity to another.
After using bundle to move data...While clicking the option on navigation drawer the app crashes. help me.
MainActivity.java
public class MainActivity extends AppCompatActivity {
Bundle bundle;
EditText regno,password;
ProgressDialog progress;
TextView attempt,register;
FirebaseFirestore store;
Button signin;
Integer count=5;
String Re,Pass,dept;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
progress=new ProgressDialog(MainActivity.this);
store=FirebaseFirestore.getInstance();
regno=(EditText)findViewById(R.id.editText1);
password=(EditText)findViewById(R.id.editText2);
register=(TextView)findViewById(R.id.textView1);
attempt=(TextView)findViewById(R.id.textView3);
signin=(Button)findViewById(R.id.button);
signin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//progress bar
progress.setTitle("Please wait");
progress.setMessage("Fetching Data..");
progress.show();
//-----------------
String INregno=regno.getText().toString();
String INpass=password.getText().toString();
if(INregno.isEmpty())
{
regno.setError("Enter the Registerno");
progress.dismiss();
}
else if(INpass.isEmpty())
{
password.setError("Enter the password");
progress.dismiss();
}
else if(count>=1)
{
//Firestore Fetching
store.collection("Students").document(regno.getText().toString()).get().addOnSuccessListener(new OnSuccessListener<DocumentSnapshot>()
{
@Override
public void onSuccess(DocumentSnapshot documentSnapshot)
{
Re = documentSnapshot.getString("Regno");
Pass = documentSnapshot.getString("Password");
dept = documentSnapshot.getString("Department");
if (password.getText().toString().equals(Pass) && regno.getText().toString().equals(Re))
{
finish();
progress.dismiss();
Toast.makeText(getApplicationContext(), "Login Success", Toast.LENGTH_LONG).show();
/*Bundle intent to take data from login to other activity
*/
Intent in = new Intent(getApplicationContext(), Academic.class);
in.putExtra("regno",Re);
in.putExtra("dept",dept);
startActivity(in);
}
else
{
--count;
progress.dismiss();
Toast.makeText(getApplicationContext(), "Invalid Username and Password", Toast.LENGTH_LONG).show();
attempt.setText("No.of.Attempts: "+count);
}
}
})
.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e)
{
progress.dismiss();
Toast.makeText(getApplicationContext(), e.getMessage(), Toast.LENGTH_LONG).show();
}
});
}
else
{
progress.dismiss();
Toast.makeText(getApplicationContext(),"Reached the maximum limit of attemptsn Try later",Toast.LENGTH_SHORT).show();
}
}
});
register.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent in=new Intent(MainActivity.this,Registration.class);
startActivity(in);
}
});
}
}
Academic.java
public class Academic extends AppCompatActivity {
DrawerLayout mDrawer;
ActionBarDrawerToggle mToggle;
Bundle bundle;
String regno,dept;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_academic);
FirebaseFirestore db = FirebaseFirestore.getInstance();
/*Bundle arrives from Login Activity
with Regno and dept
Error raises due to the following three lines
*/
bundle = getIntent().getExtras();
regno =bundle.getString("regno");
dept=bundle.getString("dept"); //bundle receiving ends here
//Tool bar declaration
Toolbar toolbarObj = (Toolbar)findViewById(R.id.toolbar_id);
setSupportActionBar(toolbarObj);
getSupportActionBar().setTitle("Academics");
//Drawer Layout
mDrawer=(DrawerLayout)findViewById(R.id.drawer_layout);
mToggle=new ActionBarDrawerToggle(this,mDrawer,R.string.open,R.string.close);
mDrawer.addDrawerListener(mToggle);
mToggle.syncState();
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
//-----navigation selection
NavigationView nv=(NavigationView)findViewById(R.id.select_nav_option);
nv.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
switch (item.getItemId())
{
case(R.id.academic):
{
finish();
Intent in = new Intent(getApplicationContext(), Academic.class);
startActivity(in);
break;
}
case(R.id.logout):
{
finish();
Intent in= new Intent(getApplicationContext(),MainActivity.class);
startActivity(in);
break;
}
case(R.id.location):
{
Intent in= new Intent(getApplicationContext(),Location.class);
startActivity(in);
break;
}
case(R.id.contact):
{
finish();
Intent in= new Intent(getApplicationContext(),Contact.class);
startActivity(in);
break;
}
}
return true;
}
});
}
@Override
public boolean onOptionsItemSelected(MenuItem item)
{
if(mToggle.onOptionsItemSelected(item))
{
return true;
}
return super.onOptionsItemSelected(item);
}
}
Logcat error
11-20 01:02:51.669 11153-11153/com.smartinfo.techguy.smartinfodesk W/dalvikvm: threadid=1: calling UncaughtExceptionHandler
11-20 01:02:51.671 11153-11153/com.smartinfo.techguy.smartinfodesk E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.smartinfo.techguy.smartinfodesk, PID: 11153
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.smartinfo.techguy.smartinfodesk/com.smartinfo.techguy.smartinfodesk.Academic}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2338)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:828)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:644)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.smartinfo.techguy.smartinfodesk.Academic.onCreate(Academic.java:41)
at android.app.Activity.performCreate(Activity.java:5264)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2302)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:828)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:644)
at dalvik.system.NativeStart.main(Native Method)
11-20 01:03:21.674 11153-11169/com.smartinfo.techguy.smartinfodesk D/dalvikvm: threadid=11: exiting
11-20 01:03:21.675 11153-11169/com.smartinfo.techguy.smartinfodesk D/dalvikvm: threadid=11: bye!
Help me...Thanks in Advance
java
android 
firebase crash bundle asked Nov 19 '18 at 19:28
TechguyTechguy
113
|
show 1 more comment
0
I am trying to move register number from MainActivity.java to Academics.java
I used navigation drawer to jump from one activity to another.
After using bundle to move data...While clicking the option on navigation drawer the app crashes. help me.
MainActivity.java
public class MainActivity extends AppCompatActivity {
Bundle bundle;
EditText regno,password;
ProgressDialog progress;
TextView attempt,register;
FirebaseFirestore store;
Button signin;
Integer count=5;
String Re,Pass,dept;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
progress=new ProgressDialog(MainActivity.this);
store=FirebaseFirestore.getInstance();
regno=(EditText)findViewById(R.id.editText1);
password=(EditText)findViewById(R.id.editText2);
register=(TextView)findViewById(R.id.textView1);
attempt=(TextView)findViewById(R.id.textView3);
signin=(Button)findViewById(R.id.button);
signin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//progress bar
progress.setTitle("Please wait");
progress.setMessage("Fetching Data..");
progress.show();
//-----------------
String INregno=regno.getText().toString();
String INpass=password.getText().toString();
if(INregno.isEmpty())
{
regno.setError("Enter the Registerno");
progress.dismiss();
}
else if(INpass.isEmpty())
{
password.setError("Enter the password");
progress.dismiss();
}
else if(count>=1)
{
//Firestore Fetching
store.collection("Students").document(regno.getText().toString()).get().addOnSuccessListener(new OnSuccessListener<DocumentSnapshot>()
{
@Override
public void onSuccess(DocumentSnapshot documentSnapshot)
{
Re = documentSnapshot.getString("Regno");
Pass = documentSnapshot.getString("Password");
dept = documentSnapshot.getString("Department");
if (password.getText().toString().equals(Pass) && regno.getText().toString().equals(Re))
{
finish();
progress.dismiss();
Toast.makeText(getApplicationContext(), "Login Success", Toast.LENGTH_LONG).show();
/*Bundle intent to take data from login to other activity
*/
Intent in = new Intent(getApplicationContext(), Academic.class);
in.putExtra("regno",Re);
in.putExtra("dept",dept);
startActivity(in);
}
else
{
--count;
progress.dismiss();
Toast.makeText(getApplicationContext(), "Invalid Username and Password", Toast.LENGTH_LONG).show();
attempt.setText("No.of.Attempts: "+count);
}
}
})
.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e)
{
progress.dismiss();
Toast.makeText(getApplicationContext(), e.getMessage(), Toast.LENGTH_LONG).show();
}
});
}
else
{
progress.dismiss();
Toast.makeText(getApplicationContext(),"Reached the maximum limit of attemptsn Try later",Toast.LENGTH_SHORT).show();
}
}
});
register.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent in=new Intent(MainActivity.this,Registration.class);
startActivity(in);
}
});
}
}
Academic.java
public class Academic extends AppCompatActivity {
DrawerLayout mDrawer;
ActionBarDrawerToggle mToggle;
Bundle bundle;
String regno,dept;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_academic);
FirebaseFirestore db = FirebaseFirestore.getInstance();
/*Bundle arrives from Login Activity
with Regno and dept
Error raises due to the following three lines
*/
bundle = getIntent().getExtras();
regno =bundle.getString("regno");
dept=bundle.getString("dept"); //bundle receiving ends here
//Tool bar declaration
Toolbar toolbarObj = (Toolbar)findViewById(R.id.toolbar_id);
setSupportActionBar(toolbarObj);
getSupportActionBar().setTitle("Academics");
//Drawer Layout
mDrawer=(DrawerLayout)findViewById(R.id.drawer_layout);
mToggle=new ActionBarDrawerToggle(this,mDrawer,R.string.open,R.string.close);
mDrawer.addDrawerListener(mToggle);
mToggle.syncState();
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
//-----navigation selection
NavigationView nv=(NavigationView)findViewById(R.id.select_nav_option);
nv.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
switch (item.getItemId())
{
case(R.id.academic):
{
finish();
Intent in = new Intent(getApplicationContext(), Academic.class);
startActivity(in);
break;
}
case(R.id.logout):
{
finish();
Intent in= new Intent(getApplicationContext(),MainActivity.class);
startActivity(in);
break;
}
case(R.id.location):
{
Intent in= new Intent(getApplicationContext(),Location.class);
startActivity(in);
break;
}
case(R.id.contact):
{
finish();
Intent in= new Intent(getApplicationContext(),Contact.class);
startActivity(in);
break;
}
}
return true;
}
});
}
@Override
public boolean onOptionsItemSelected(MenuItem item)
{
if(mToggle.onOptionsItemSelected(item))
{
return true;
}
return super.onOptionsItemSelected(item);
}
}
Logcat error
11-20 01:02:51.669 11153-11153/com.smartinfo.techguy.smartinfodesk W/dalvikvm: threadid=1: calling UncaughtExceptionHandler
11-20 01:02:51.671 11153-11153/com.smartinfo.techguy.smartinfodesk E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.smartinfo.techguy.smartinfodesk, PID: 11153
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.smartinfo.techguy.smartinfodesk/com.smartinfo.techguy.smartinfodesk.Academic}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2338)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:828)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:644)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.smartinfo.techguy.smartinfodesk.Academic.onCreate(Academic.java:41)
at android.app.Activity.performCreate(Activity.java:5264)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2302)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:828)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:644)
at dalvik.system.NativeStart.main(Native Method)
11-20 01:03:21.674 11153-11169/com.smartinfo.techguy.smartinfodesk D/dalvikvm: threadid=11: exiting
11-20 01:03:21.675 11153-11169/com.smartinfo.techguy.smartinfodesk D/dalvikvm: threadid=11: bye!
Help me...Thanks in Advance
java
android firebase crash bundle asked Nov 19 '18 at 19:28
TechguyTechguy
113
If the app crashes, there is a stack trace. Please look that up on logcat, and add it to your question.
– Alex Mamo
Nov 19 '18 at 19:29
Logcat error posted.
– Techguy
Nov 19 '18 at 19:40
At which particular line of code are you getting this error?
– Alex Mamo
Nov 19 '18 at 19:41
check Academics.java file the bundle line throws an error. Error lines were mentioned in the program comment
– Techguy
Nov 19 '18 at 19:43
It means that your Bundle isnull. Are you sure you are storing something in it?
– Alex Mamo
Nov 19 '18 at 19:48
|
show 1 more comment
0
0
0
I am trying to move register number from MainActivity.java to Academics.java
I used navigation drawer to jump from one activity to another.
After using bundle to move data...While clicking the option on navigation drawer the app crashes. help me.
MainActivity.java
public class MainActivity extends AppCompatActivity {
Bundle bundle;
EditText regno,password;
ProgressDialog progress;
TextView attempt,register;
FirebaseFirestore store;
Button signin;
Integer count=5;
String Re,Pass,dept;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
progress=new ProgressDialog(MainActivity.this);
store=FirebaseFirestore.getInstance();
regno=(EditText)findViewById(R.id.editText1);
password=(EditText)findViewById(R.id.editText2);
register=(TextView)findViewById(R.id.textView1);
attempt=(TextView)findViewById(R.id.textView3);
signin=(Button)findViewById(R.id.button);
signin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//progress bar
progress.setTitle("Please wait");
progress.setMessage("Fetching Data..");
progress.show();
//-----------------
String INregno=regno.getText().toString();
String INpass=password.getText().toString();
if(INregno.isEmpty())
{
regno.setError("Enter the Registerno");
progress.dismiss();
}
else if(INpass.isEmpty())
{
password.setError("Enter the password");
progress.dismiss();
}
else if(count>=1)
{
//Firestore Fetching
store.collection("Students").document(regno.getText().toString()).get().addOnSuccessListener(new OnSuccessListener<DocumentSnapshot>()
{
@Override
public void onSuccess(DocumentSnapshot documentSnapshot)
{
Re = documentSnapshot.getString("Regno");
Pass = documentSnapshot.getString("Password");
dept = documentSnapshot.getString("Department");
if (password.getText().toString().equals(Pass) && regno.getText().toString().equals(Re))
{
finish();
progress.dismiss();
Toast.makeText(getApplicationContext(), "Login Success", Toast.LENGTH_LONG).show();
/*Bundle intent to take data from login to other activity
*/
Intent in = new Intent(getApplicationContext(), Academic.class);
in.putExtra("regno",Re);
in.putExtra("dept",dept);
startActivity(in);
}
else
{
--count;
progress.dismiss();
Toast.makeText(getApplicationContext(), "Invalid Username and Password", Toast.LENGTH_LONG).show();
attempt.setText("No.of.Attempts: "+count);
}
}
})
.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e)
{
progress.dismiss();
Toast.makeText(getApplicationContext(), e.getMessage(), Toast.LENGTH_LONG).show();
}
});
}
else
{
progress.dismiss();
Toast.makeText(getApplicationContext(),"Reached the maximum limit of attemptsn Try later",Toast.LENGTH_SHORT).show();
}
}
});
register.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent in=new Intent(MainActivity.this,Registration.class);
startActivity(in);
}
});
}
}
Academic.java
public class Academic extends AppCompatActivity {
DrawerLayout mDrawer;
ActionBarDrawerToggle mToggle;
Bundle bundle;
String regno,dept;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_academic);
FirebaseFirestore db = FirebaseFirestore.getInstance();
/*Bundle arrives from Login Activity
with Regno and dept
Error raises due to the following three lines
*/
bundle = getIntent().getExtras();
regno =bundle.getString("regno");
dept=bundle.getString("dept"); //bundle receiving ends here
//Tool bar declaration
Toolbar toolbarObj = (Toolbar)findViewById(R.id.toolbar_id);
setSupportActionBar(toolbarObj);
getSupportActionBar().setTitle("Academics");
//Drawer Layout
mDrawer=(DrawerLayout)findViewById(R.id.drawer_layout);
mToggle=new ActionBarDrawerToggle(this,mDrawer,R.string.open,R.string.close);
mDrawer.addDrawerListener(mToggle);
mToggle.syncState();
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
//-----navigation selection
NavigationView nv=(NavigationView)findViewById(R.id.select_nav_option);
nv.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
switch (item.getItemId())
{
case(R.id.academic):
{
finish();
Intent in = new Intent(getApplicationContext(), Academic.class);
startActivity(in);
break;
}
case(R.id.logout):
{
finish();
Intent in= new Intent(getApplicationContext(),MainActivity.class);
startActivity(in);
break;
}
case(R.id.location):
{
Intent in= new Intent(getApplicationContext(),Location.class);
startActivity(in);
break;
}
case(R.id.contact):
{
finish();
Intent in= new Intent(getApplicationContext(),Contact.class);
startActivity(in);
break;
}
}
return true;
}
});
}
@Override
public boolean onOptionsItemSelected(MenuItem item)
{
if(mToggle.onOptionsItemSelected(item))
{
return true;
}
return super.onOptionsItemSelected(item);
}
}
Logcat error
11-20 01:02:51.669 11153-11153/com.smartinfo.techguy.smartinfodesk W/dalvikvm: threadid=1: calling UncaughtExceptionHandler
11-20 01:02:51.671 11153-11153/com.smartinfo.techguy.smartinfodesk E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.smartinfo.techguy.smartinfodesk, PID: 11153
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.smartinfo.techguy.smartinfodesk/com.smartinfo.techguy.smartinfodesk.Academic}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2338)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:828)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:644)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.smartinfo.techguy.smartinfodesk.Academic.onCreate(Academic.java:41)
at android.app.Activity.performCreate(Activity.java:5264)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2302)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:828)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:644)
at dalvik.system.NativeStart.main(Native Method)
11-20 01:03:21.674 11153-11169/com.smartinfo.techguy.smartinfodesk D/dalvikvm: threadid=11: exiting
11-20 01:03:21.675 11153-11169/com.smartinfo.techguy.smartinfodesk D/dalvikvm: threadid=11: bye!
Help me...Thanks in Advance
java
android firebase crash bundle asked Nov 19 '18 at 19:28
TechguyTechguy
113
I am trying to move register number from MainActivity.java to Academics.java
I used navigation drawer to jump from one activity to another.
After using bundle to move data...While clicking the option on navigation drawer the app crashes. help me.
MainActivity.java
public class MainActivity extends AppCompatActivity {
Bundle bundle;
EditText regno,password;
ProgressDialog progress;
TextView attempt,register;
FirebaseFirestore store;
Button signin;
Integer count=5;
String Re,Pass,dept;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
progress=new ProgressDialog(MainActivity.this);
store=FirebaseFirestore.getInstance();
regno=(EditText)findViewById(R.id.editText1);
password=(EditText)findViewById(R.id.editText2);
register=(TextView)findViewById(R.id.textView1);
attempt=(TextView)findViewById(R.id.textView3);
signin=(Button)findViewById(R.id.button);
signin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//progress bar
progress.setTitle("Please wait");
progress.setMessage("Fetching Data..");
progress.show();
//-----------------
String INregno=regno.getText().toString();
String INpass=password.getText().toString();
if(INregno.isEmpty())
{
regno.setError("Enter the Registerno");
progress.dismiss();
}
else if(INpass.isEmpty())
{
password.setError("Enter the password");
progress.dismiss();
}
else if(count>=1)
{
//Firestore Fetching
store.collection("Students").document(regno.getText().toString()).get().addOnSuccessListener(new OnSuccessListener<DocumentSnapshot>()
{
@Override
public void onSuccess(DocumentSnapshot documentSnapshot)
{
Re = documentSnapshot.getString("Regno");
Pass = documentSnapshot.getString("Password");
dept = documentSnapshot.getString("Department");
if (password.getText().toString().equals(Pass) && regno.getText().toString().equals(Re))
{
finish();
progress.dismiss();
Toast.makeText(getApplicationContext(), "Login Success", Toast.LENGTH_LONG).show();
/*Bundle intent to take data from login to other activity
*/
Intent in = new Intent(getApplicationContext(), Academic.class);
in.putExtra("regno",Re);
in.putExtra("dept",dept);
startActivity(in);
}
else
{
--count;
progress.dismiss();
Toast.makeText(getApplicationContext(), "Invalid Username and Password", Toast.LENGTH_LONG).show();
attempt.setText("No.of.Attempts: "+count);
}
}
})
.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e)
{
progress.dismiss();
Toast.makeText(getApplicationContext(), e.getMessage(), Toast.LENGTH_LONG).show();
}
});
}
else
{
progress.dismiss();
Toast.makeText(getApplicationContext(),"Reached the maximum limit of attemptsn Try later",Toast.LENGTH_SHORT).show();
}
}
});
register.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent in=new Intent(MainActivity.this,Registration.class);
startActivity(in);
}
});
}
}
Academic.java
public class Academic extends AppCompatActivity {
DrawerLayout mDrawer;
ActionBarDrawerToggle mToggle;
Bundle bundle;
String regno,dept;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_academic);
FirebaseFirestore db = FirebaseFirestore.getInstance();
/*Bundle arrives from Login Activity
with Regno and dept
Error raises due to the following three lines
*/
bundle = getIntent().getExtras();
regno =bundle.getString("regno");
dept=bundle.getString("dept"); //bundle receiving ends here
//Tool bar declaration
Toolbar toolbarObj = (Toolbar)findViewById(R.id.toolbar_id);
setSupportActionBar(toolbarObj);
getSupportActionBar().setTitle("Academics");
//Drawer Layout
mDrawer=(DrawerLayout)findViewById(R.id.drawer_layout);
mToggle=new ActionBarDrawerToggle(this,mDrawer,R.string.open,R.string.close);
mDrawer.addDrawerListener(mToggle);
mToggle.syncState();
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
//-----navigation selection
NavigationView nv=(NavigationView)findViewById(R.id.select_nav_option);
nv.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
switch (item.getItemId())
{
case(R.id.academic):
{
finish();
Intent in = new Intent(getApplicationContext(), Academic.class);
startActivity(in);
break;
}
case(R.id.logout):
{
finish();
Intent in= new Intent(getApplicationContext(),MainActivity.class);
startActivity(in);
break;
}
case(R.id.location):
{
Intent in= new Intent(getApplicationContext(),Location.class);
startActivity(in);
break;
}
case(R.id.contact):
{
finish();
Intent in= new Intent(getApplicationContext(),Contact.class);
startActivity(in);
break;
}
}
return true;
}
});
}
@Override
public boolean onOptionsItemSelected(MenuItem item)
{
if(mToggle.onOptionsItemSelected(item))
{
return true;
}
return super.onOptionsItemSelected(item);
}
}
Logcat error
11-20 01:02:51.669 11153-11153/com.smartinfo.techguy.smartinfodesk W/dalvikvm: threadid=1: calling UncaughtExceptionHandler
11-20 01:02:51.671 11153-11153/com.smartinfo.techguy.smartinfodesk E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.smartinfo.techguy.smartinfodesk, PID: 11153
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.smartinfo.techguy.smartinfodesk/com.smartinfo.techguy.smartinfodesk.Academic}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2338)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:828)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:644)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.smartinfo.techguy.smartinfodesk.Academic.onCreate(Academic.java:41)
at android.app.Activity.performCreate(Activity.java:5264)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2302)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:828)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:644)
at dalvik.system.NativeStart.main(Native Method)
11-20 01:03:21.674 11153-11169/com.smartinfo.techguy.smartinfodesk D/dalvikvm: threadid=11: exiting
11-20 01:03:21.675 11153-11169/com.smartinfo.techguy.smartinfodesk D/dalvikvm: threadid=11: bye!
Help me...Thanks in Advance
java
android firebase crash bundle java
android firebase crash bundle asked Nov 19 '18 at 19:28
TechguyTechguy
113
asked Nov 19 '18 at 19:28
TechguyTechguy
113
edited Nov 19 '18 at 19:43
Techguy
asked Nov 19 '18 at 19:28
TechguyTechguy
113
asked Nov 19 '18 at 19:28
TechguyTechguy
113
asked Nov 19 '18 at 19:28
TechguyTechguy
113
113
If the app crashes, there is a stack trace. Please look that up on logcat, and add it to your question.
– Alex Mamo
Nov 19 '18 at 19:29
Logcat error posted.
– Techguy
Nov 19 '18 at 19:40
At which particular line of code are you getting this error?
– Alex Mamo
Nov 19 '18 at 19:41
check Academics.java file the bundle line throws an error. Error lines were mentioned in the program comment
– Techguy
Nov 19 '18 at 19:43
It means that your Bundle isnull. Are you sure you are storing something in it?
– Alex Mamo
Nov 19 '18 at 19:48
|
show 1 more comment
If the app crashes, there is a stack trace. Please look that up on logcat, and add it to your question.
– Alex Mamo
Nov 19 '18 at 19:29
Logcat error posted.
– Techguy
Nov 19 '18 at 19:40
At which particular line of code are you getting this error?
– Alex Mamo
Nov 19 '18 at 19:41
check Academics.java file the bundle line throws an error. Error lines were mentioned in the program comment
– Techguy
Nov 19 '18 at 19:43
It means that your Bundle isnull. Are you sure you are storing something in it?
– Alex Mamo
Nov 19 '18 at 19:48
If the app crashes, there is a stack trace. Please look that up on logcat, and add it to your question.
– Alex Mamo
Nov 19 '18 at 19:29
If the app crashes, there is a stack trace. Please look that up on logcat, and add it to your question.
– Alex Mamo
Nov 19 '18 at 19:29
Logcat error posted.
– Techguy
Nov 19 '18 at 19:40
Logcat error posted.
– Techguy
Nov 19 '18 at 19:40
At which particular line of code are you getting this error?
– Alex Mamo
Nov 19 '18 at 19:41
At which particular line of code are you getting this error?
– Alex Mamo
Nov 19 '18 at 19:41
check Academics.java file the bundle line throws an error. Error lines were mentioned in the program comment
– Techguy
Nov 19 '18 at 19:43
check Academics.java file the bundle line throws an error. Error lines were mentioned in the program comment
– Techguy
Nov 19 '18 at 19:43
It means that your Bundle is
null. Are you sure you are storing something in it?– Alex Mamo
Nov 19 '18 at 19:48
It means that your Bundle is
null. Are you sure you are storing something in it?– Alex Mamo
Nov 19 '18 at 19:48
|
show 1 more comment
0
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If the app crashes, there is a stack trace. Please look that up on logcat, and add it to your question.
– Alex Mamo
Nov 19 '18 at 19:29
Logcat error posted.
– Techguy
Nov 19 '18 at 19:40
At which particular line of code are you getting this error?
– Alex Mamo
Nov 19 '18 at 19:41
check Academics.java file the bundle line throws an error. Error lines were mentioned in the program comment
– Techguy
Nov 19 '18 at 19:43
It means that your Bundle is
null. Are you sure you are storing something in it?– Alex Mamo
Nov 19 '18 at 19:48