Develop Reference

Firebase Crashlytics error logs in samsung phone

I have uploaded a signed app on the play store. and today when I opened my firebase pannel in crashlytics it's showing 2 crashes in the last 24 hours. Both the crashes were on the same java class and line and also both on the Samsung phone only.
Here is the error: Fatal Exception: java.lang.RuntimeException
Error receiving broadcast Intent { act=android.net.conn.CONNECTIVITY_CHANGE flg=0x4200010....
It's in my receiver class: below is the code for the same
public void onReceive(final Context context, Intent intent) {
connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivityManager != null) {
networkInfo = connectivityManager.getActiveNetworkInfo();
if (networkInfo != null && networkInfo.isConnected()) {
if (alertdialog != null) {
alertdialog.dismiss();
}
} else {
builder = new AlertDialog.Builder(context);
View view = LayoutInflater.from(context).inflate(R.layout.internet_dialouge, null);
builder.setView(view);
builder.create();
builder.setCancelable(true);
alertdialog = builder.show();
view.findViewById(R.id.btnDismiss)
.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
alertdialog.dismiss();
}
});
view.findViewById(R.id.btnSetting)
.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
context.startActivity(new Intent(Settings.ACTION_SETTINGS));
}
});}}}}
Crashlytics showing error in this line: alertdialog = builder.show();
And I use this receiver class in the main activity like this:
myReceiver = new MyReceiver();
IntentFilter intentFilter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);
myReceiver = new MyReceiver();
registerReceiver(myReceiver, intentFilter);
I am not understanding why this error in crashlytics.

"context" may be not initialized when your application reaches the line
builder = new AlertDialog.Builder(context);
Please check context is always initialized. You can check like this.
if(context!=null) {
//build alertdialog. }

Application keeps force stopping

I'm creating a tic tac toe game using android studio but my application keeps crashing
i tested this app on my emulator and copied the logcat here!
here's my code
public class LoginActivity extends AppCompatActivity {
private TextView twoPlayerLabel;
private TextView optionsLabel;
private MediaPlayer intro;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
twoPlayerLabel = (TextView) findViewById(R.id.two_player_label);
optionsLabel = (TextView) findViewById(R.id.options_label);
}
public void twoPlayer(View v) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
LayoutInflater inflater = getLayoutInflater();
final View layout = inflater.inflate(R.layout.two_player_options, null);
final Intent twoPlayerLocal = new Intent(LoginActivity.this, TwoPlayerActivityLocal.class);
final TextView playerOneName = (TextView) layout.findViewById(R.id.player_one);
final TextView playerTwoName = (TextView) layout.findViewById(R.id.player_two);
final RadioButton localGame = (RadioButton) layout.findViewById(R.id.local_game);
final RadioButton bluetoothGame = (RadioButton) layout.findViewById(R.id.bluetooth_game);
final RadioButton oMarker = (RadioButton) layout.findViewById(R.id.o_marker);
final RadioButton xMarker = (RadioButton) layout.findViewById(R.id.x_marker);
localGame.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
playerTwoName.setVisibility(View.VISIBLE);
oMarker.setVisibility(View.VISIBLE);
xMarker.setVisibility(View.VISIBLE);
}
});
bluetoothGame.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
playerTwoName.setVisibility(View.GONE);
oMarker.setVisibility(View.GONE);
xMarker.setVisibility(View.GONE);
}
});
oMarker.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
oMarker.setBackgroundResource(R.drawable.tic_tac_toe_o_black);
xMarker.setBackgroundResource(R.drawable.tic_tac_toe_x);
}
});
xMarker.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
xMarker.setBackgroundResource(R.drawable.tic_tac_toe_x_black);
oMarker.setBackgroundResource(R.drawable.tic_tac_toe_o);
}
});
builder.setView(layout)
.setTitle("Two Player Game Options")
.setPositiveButton("Start", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
if (localGame.isChecked()) {
if ((playerOneName.getText().length() > 0) && (playerTwoName.getText().length() > 0)) {
if (oMarker.isChecked()) {
Player playerOne = new Player(playerOneName.getText().toString(), 'o', 0);
Player playerTwo = new Player(playerTwoName.getText().toString(), 'x', 0);
twoPlayerLocal.putExtra("playerOne", playerOne);
twoPlayerLocal.putExtra("playerTwo", playerTwo);
twoPlayerLocal.putExtra("isTurn", playerOne.getPlayerMarker());
startActivity(twoPlayerLocal);
} else if (xMarker.isChecked()) {
Player playerOne = new Player(playerOneName.getText().toString(), 'x', 0);
Player playerTwo = new Player(playerTwoName.getText().toString(), 'o', 0);
twoPlayerLocal.putExtra("playerOne", playerOne);
twoPlayerLocal.putExtra("playerTwo", playerTwo);
startActivity(twoPlayerLocal);
}
else {
Toast.makeText(LoginActivity.this, "Please select the starting marker", Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(LoginActivity.this, "Please enter a name for the players", Toast.LENGTH_SHORT).show();
}
} else if (bluetoothGame.isChecked()) {
Intent bluetoothIntent = new Intent(LoginActivity.this, TwoPlayerActivityBluetooth.class);
String playerOne = null;
if (playerOneName.getText().length() > 0) {
playerOne = playerOneName.getText().toString();
bluetoothIntent.putExtra("playerOne", playerOne);
startActivity(bluetoothIntent);
} else {
Toast.makeText(LoginActivity.this, "Please enter a player name", Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(LoginActivity.this, "Please Select a game type", Toast.LENGTH_SHORT).show();
}
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
}
});
// Create the AlertDialog object and return it
builder.create().show();
}
#Override
public void onBackPressed() {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("Are you sure you want to quit the game?")
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
}
});
builder.create().show();
}
}
and this is logcat!
2019-09-04 22:44:37.659 17644-17644/? I/ir.puzzle.douz: Not late-enabling -Xcheck:jni (already on) 2019-09-04 22:44:37.697 17644-17644/? E/ir.puzzle.douz: Unknown bits set in runtime_flags: 0x8000 2019-09-04 22:44:37.699 17644-17644/? W/ir.puzzle.douz: Unexpected CPU variant for X86 using defaults: x86 2019-09-04 22:44:38.014 17644-17670/ir.puzzle.douz D/libEGL: Emulator has host GPU support, qemu.gles is set to 1. 2019-09-04 22:44:38.036 17644-17670/ir.puzzle.douz W/libc: Unable to set property "qemu.gles" to "1": connection failed; errno=13 (Permission denied) 2019-09-04 22:44:38.023 17644-17644/ir.puzzle.douz W/RenderThread: type=1400 audit(0.0:157): avc: denied { write } for name="property_service" dev="tmpfs" ino=6800 scontext=u:r:untrusted_app:s0:c134,c256,c512,c768 tcontext=u:object_r:property_socket:s0 tclass=sock_file permissive=0 2019-09-04 22:44:38.082 17644-17670/ir.puzzle.douz D/libEGL: loaded /vendor/lib/egl/libEGL_emulation.so 2019-09-04 22:44:38.092 17644-17670/ir.puzzle.douz D/libEGL: loaded /vendor/lib/egl/libGLESv1_CM_emulation.so 2019-09-04 22:44:38.129 17644-17670/ir.puzzle.douz D/libEGL: loaded /vendor/lib/egl/libGLESv2_emulation.so 2019-09-04 22:44:38.272 17644-17644/ir.puzzle.douz W/ir.puzzle.douz: Accessing hidden method Landroid/view/View;->computeFitSystemWindows(Landroid/graphics/Rect;Landroid/graphics/Rect;)Z (greylist, reflection, allowed) 2019-09-04 22:44:38.273 17644-17644/ir.puzzle.douz W/ir.puzzle.douz: Accessing hidden method Landroid/view/ViewGroup;->makeOptionalFitsSystemWindows()V (greylist, reflection, allowed) 2019-09-04 22:44:38.412 17644-17644/ir.puzzle.douz D/AndroidRuntime: Shutting down VM 2019-09-04 22:44:38.416 17644-17644/ir.puzzle.douz E/AndroidRuntime: FATAL EXCEPTION: main
Process: ir.puzzle.douz, PID: 17644
java.lang.RuntimeException: Unable to start activity ComponentInfo{ir.puzzle.douz/ir.puzzle.douz.view.LoginActivity}: java.lang.IndexOutOfBoundsException: index=0 out of bounds (limit=0, nb=4)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3270)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
Caused by: java.lang.IndexOutOfBoundsException: index=0 out of bounds (limit=0, nb=4)
at java.nio.Buffer.checkIndex(Buffer.java:564)
at java.nio.DirectByteBuffer.getInt(DirectByteBuffer.java:570)
at android.graphics.fonts.FontFileUtil.analyzeStyle(FontFileUtil.java:94)
at android.graphics.fonts.Font$Builder.build(Font.java:364)
at android.graphics.Typeface$Builder.build(Typeface.java:596)
at android.graphics.Typeface.createFromAsset(Typeface.java:960)
at ir.puzzle.douz.view.LoginActivity.onCreate(LoginActivity.java:35)
at android.app.Activity.performCreate(Activity.java:7802)
at android.app.Activity.performCreate(Activity.java:7791)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1299)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3245)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409) 
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83) 
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) 
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016) 
at android.os.Handler.dispatchMessage(Handler.java:107) 
at android.os.Looper.loop(Looper.java:214) 
at android.app.ActivityThread.main(ActivityThread.java:7356) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
i can't figure out where's the problem of this code that always gets force-closed! can you tell me which part of code is problematic? and how can i fix it?

App crashes when Progress Dialog is open and user changes orientation [duplicate]

This question already has answers here:
What is a NullPointerException, and how do I fix it?
(12 answers)
Closed 5 years ago.
My application has a Progress Dialog for login process and when the orientation is changed while dialog box is open, app crashes.This all works fine, except when screen orientation changes while the dialog is up. At this point the app crashes. I am figuring out this issue from the last 3 nights but not able to get it, please help.
My fragment:
public class Example extends Fragment {
private static final String TAG = "LoginActivity";
private static final int REQUEST_SIGNUP = 0;
Unbinder unbinder;
#BindView(R.id.input_email) EditText _emailText;
#BindView(R.id.input_password) EditText _passwordText;
#BindView(R.id.btn_login) Button _loginButton;
#BindView(R.id.link_signup) TextView _signupLink;
#Override
public void onDestroyView() {
super.onDestroyView();
// unbind the view to free some memory
unbinder.unbind();
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.Example, container, false);
unbinder=ButterKnife.bind(this,rootView);
_loginButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
login();
}
});
_signupLink.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view)
{
Intent create= new Intent(getActivity(),NewAccount.class);
startActivity(create);
}
});
return rootView;
}
public void login() {
Log.d(TAG, "Login");
if (!validate()) {
onLoginFailed();
return;
}
_loginButton.setEnabled(false);
final ProgressDialog progressDialog = new ProgressDialog(getActivity(),
R.style.AppTheme_Dark_Dialog);
progressDialog.setIndeterminate(true);
progressDialog.setMessage("Authenticating...");
progressDialog.show();
//new YourAsynTask(getActivity()).execute();
String email = _emailText.getText().toString();
String password = _passwordText.getText().toString();
// TODO: Implement your own authentication logic here.
new android.os.Handler().postDelayed(
new Runnable() {
public void run() {
// On complete call either onLoginSuccess or onLoginFailed
onLoginSuccess();
// onLoginFailed();
progressDialog.dismiss();
}
}, 3000);
}
#Override
public void onPause() {
Log.e("DEBUG", "OnPause of loginFragment1");
super.onPause();
}
public void onLoginSuccess() {
_loginButton.setEnabled(true);
Intent i=new Intent(getActivity(),SuccessLogin.class);
startActivity(i);
}
public void onLoginFailed() {
Toast.makeText(getActivity(), "Login failed", Toast.LENGTH_LONG).show();
_loginButton.setEnabled(true);
}
public boolean validate() {
boolean valid = true;
String email = _emailText.getText().toString();
String password = _passwordText.getText().toString();
if (email.isEmpty() || !android.util.Patterns.EMAIL_ADDRESS.matcher(email).matches()) {
_emailText.setError("enter a valid email address");
valid = false;
} else {
_emailText.setError(null);
}
if (password.isEmpty() || password.length() < 4 || password.length() > 10) {
_passwordText.setError("between 4 and 10 alphanumeric characters");
valid = false;
} else {
_passwordText.setError(null);
}
return valid;
}
Logcat output:
11-16 19:20:10.955 4022-4022/com.example.a1332931.login_application E/WindowManager: android.view.WindowLeaked: Activity com.example.a1332931.login_application.TabActivity has leaked window com.android.internal.policy.PhoneWindow$DecorView{42b6135 V.E...... R......D 0,0-683,232} that was originally added here
at android.view.ViewRootImpl.<init>(ViewRootImpl.java:375)
at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:299)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:85)
at android.app.Dialog.show(Dialog.java:319)
at com.example.a1332931.login_application.Example.login(Example.java:156)
at com.example.a1332931.login_application.Example$1.onClick(Example.java:67)
at android.view.View.performClick(View.java:5201)
at android.view.View$PerformClick.run(View.java:21163)
at android.os.Handler.handleCallback(Handler.java:746)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5443)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
11-16 19:20:10.957 4022-4095/com.example.a1332931.login_application E/Surface: getSlotFromBufferLocked: unknown buffer: 0xb8aa6c60
11-16 19:20:12.512 4022-4022/com.example.a1332931.login_application E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.a1332931.login_application, PID: 4022
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button.setEnabled(boolean)' on a null object reference
at com.example.a1332931.login_application.Example.onLoginSuccess(Example.java:200)
at com.example.a1332931.login_application.Example$3.run(Example.java:168)
at android.os.Handler.handleCallback(Handler.java:746)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5443)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)

Add this configuration change in your Android manifest activity:
<activity
android:name="YourActivity"
android:configChanges="orientation|keyboardHidden|screenSize"/>

Adding OnClickListener makes app crash

I'm working on a term project and I'm new to java and android app development. I have experience in other programming languages, though. I'm trying to reverse engineer an app to make it able to connect and send data via bluetooth. I want to make a list with all the available bluetooth devices, a button to turn on/off bluetooth, one for making the phone discoverable for other devices and another to search for unpaired devices. But every time I add an OnClickListener to the onCreate method, the app crashes before it opens. Could anyone help me out?
The source code for the app I am trying to modify can be found here:
https://github.com/pazaan/600SeriesAndroidUploader
Here is the part that seems to makes it crash:
lvNewDevices.setOnItemClickListener(MainActivity.this);
btnONOFF.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Log.d(TAG, "onClick: enabling/disabling bluetooth.");
enableDisableBT();
}
});
btnStartConnection.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
startConnection();
}
});
btnSend.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
byte[] bytes = etSend.getText().toString().getBytes(Charset.defaultCharset());
mBluetoothConnection.write(bytes);
}
});
And here is all of OnCreate:
#Override
public void onCreate(Bundle savedInstanceState) {
Log.i(TAG, "onCreate called");
super.onCreate(savedInstanceState);
Button btnONOFF = (Button) findViewById(R.id.btnONOFF);
btnEnableDisable_Discoverable = (Button) findViewById(R.id.btnDiscoverable_on_off);
lvNewDevices = (ListView) findViewById(R.id.lvNewDevices);
mBTDevices = new ArrayList<>();
btnStartConnection = (Button) findViewById(R.id.btnStartConnection);
//Broadcasts when bond state changes (ie:pairing)
IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_BOND_STATE_CHANGED);
registerReceiver(mBroadcastReceiver4, filter);
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
//FUCKUP:
lvNewDevices.setOnItemClickListener(MainActivity.this);
btnONOFF.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Log.d(TAG, "onClick: enabling/disabling bluetooth.");
enableDisableBT();
}
});
btnStartConnection.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
startConnection();
}
});
btnSend.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
byte[] bytes = etSend.getText().toString().getBytes(Charset.defaultCharset());
mBluetoothConnection.write(bytes);
}
});
mRealm = Realm.getDefaultInstance();
RealmResults<PumpStatusEvent> data = mRealm.where(PumpStatusEvent.class)
.findAllSorted("eventDate", Sort.DESCENDING);
if (data.size() > 0)
dataStore.setLastPumpStatus(data.first());
setContentView(R.layout.activity_main);
PreferenceManager.getDefaultSharedPreferences(getBaseContext()).registerOnSharedPreferenceChangeListener(this);
prefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext());
if (!prefs.getBoolean(getString(R.string.preference_eula_accepted), false)) {
stopCgmService();
}
// setup preferences
configurationStore.setPollInterval(Long.parseLong(prefs.getString("pollInterval", Long.toString(MedtronicCnlIntentService.POLL_PERIOD_MS))));
configurationStore.setLowBatteryPollInterval(Long.parseLong(prefs.getString("lowBatPollInterval", Long.toString(MedtronicCnlIntentService.LOW_BATTERY_POLL_PERIOD_MS))));
configurationStore.setReducePollOnPumpAway(prefs.getBoolean("doublePollOnPumpAway", false));
chartZoom = Integer.parseInt(prefs.getString("chartZoom", "3"));
configurationStore.setMmolxl(prefs.getBoolean("mmolxl", false));
configurationStore.setMmolxlDecimals(prefs.getBoolean("mmolDecimals", false));
// Disable battery optimization to avoid missing values on 6.0+
// taken from https://github.com/NightscoutFoundation/xDrip/blob/master/app/src/main/java/com/eveningoutpost/dexdrip/Home.java#L277L298
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
final String packageName = getPackageName();
final PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
if (!pm.isIgnoringBatteryOptimizations(packageName)) {
Log.d(TAG, "Requesting ignore battery optimization");
try {
// ignoring battery optimizations required for constant connection
// to peripheral device - eg CGM transmitter.
final Intent intent = new Intent();
intent.setAction(Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS);
intent.setData(Uri.parse("package:" + packageName));
startActivity(intent);
} catch (ActivityNotFoundException e) {
Log.d(TAG, "Device does not appear to support battery optimization whitelisting!");
}
}
}
LocalBroadcastManager.getInstance(this).registerReceiver(
statusMessageReceiver,
new IntentFilter(MedtronicCnlIntentService.Constants.ACTION_STATUS_MESSAGE));
LocalBroadcastManager.getInstance(this).registerReceiver(
new UpdatePumpReceiver(),
new IntentFilter(MedtronicCnlIntentService.Constants.ACTION_UPDATE_PUMP));
mEnableCgmService = Eula.show(this, prefs);
IntentFilter batteryIntentFilter = new IntentFilter();
batteryIntentFilter.addAction(Intent.ACTION_BATTERY_LOW);
batteryIntentFilter.addAction(Intent.ACTION_BATTERY_CHANGED);
batteryIntentFilter.addAction(Intent.ACTION_BATTERY_OKAY);
registerReceiver(batteryReceiver, batteryIntentFilter);
IntentFilter usbIntentFilter = new IntentFilter();
usbIntentFilter.addAction(UsbManager.ACTION_USB_DEVICE_ATTACHED);
usbIntentFilter.addAction(UsbManager.ACTION_USB_DEVICE_DETACHED);
usbIntentFilter.addAction(MedtronicCnlIntentService.Constants.ACTION_USB_PERMISSION);
registerReceiver(usbReceiver, usbIntentFilter);
LocalBroadcastManager.getInstance(this).registerReceiver(
usbReceiver,
new IntentFilter(MedtronicCnlIntentService.Constants.ACTION_NO_USB_PERMISSION));
LocalBroadcastManager.getInstance(this).registerReceiver(
usbReceiver,
new IntentFilter(MedtronicCnlIntentService.Constants.ACTION_USB_REGISTER));
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
if (toolbar != null) {
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(false);
getSupportActionBar().setElevation(0);
getSupportActionBar().setTitle("Nightscout");
}
final PrimaryDrawerItem itemSettings = new PrimaryDrawerItem()
.withName("Settings")
.withIcon(GoogleMaterial.Icon.gmd_settings)
.withSelectable(false);
final PrimaryDrawerItem itemRegisterUsb = new PrimaryDrawerItem()
.withName("Registered devices")
.withIcon(GoogleMaterial.Icon.gmd_usb)
.withSelectable(false);
final PrimaryDrawerItem itemStopCollecting = new PrimaryDrawerItem()
.withName("Stop collecting data")
.withIcon(GoogleMaterial.Icon.gmd_power_settings_new)
.withSelectable(false);
final PrimaryDrawerItem itemGetNow = new PrimaryDrawerItem()
.withName("Read data now")
.withIcon(GoogleMaterial.Icon.gmd_refresh)
.withSelectable(false);
final PrimaryDrawerItem itemUpdateProfile = new PrimaryDrawerItem()
.withName("Update pump profile")
.withIcon(GoogleMaterial.Icon.gmd_insert_chart)
.withSelectable(false);
final PrimaryDrawerItem itemClearLog = new PrimaryDrawerItem()
.withName("Clear log")
.withIcon(GoogleMaterial.Icon.gmd_clear_all)
.withSelectable(false);
final PrimaryDrawerItem itemCheckForUpdate = new PrimaryDrawerItem()
.withName("Check for App update")
.withIcon(GoogleMaterial.Icon.gmd_update)
.withSelectable(false);
assert toolbar != null;
new DrawerBuilder()
.withActivity(this)
.withAccountHeader(new AccountHeaderBuilder()
.withActivity(this)
.withHeaderBackground(R.drawable.drawer_header)
.build()
)
.withTranslucentStatusBar(false)
.withToolbar(toolbar)
.withActionBarDrawerToggle(true)
.withSelectedItem(-1)
.addDrawerItems(
itemSettings,
//itemUpdateProfile, // TODO - re-add when we to add Basal Profile Upload
itemRegisterUsb,
itemCheckForUpdate,
itemClearLog,
itemGetNow,
itemStopCollecting
)
.withOnDrawerItemClickListener(new Drawer.OnDrawerItemClickListener() {
#Override
public boolean onItemClick(View view, int position, IDrawerItem drawerItem) {
if (drawerItem.equals(itemSettings)) {
openSettings();
} else if (drawerItem.equals(itemRegisterUsb)) {
openUsbRegistration();
} else if (drawerItem.equals(itemStopCollecting)) {
mEnableCgmService = false;
stopCgmService();
finish();
} else if (drawerItem.equals(itemGetNow)) {
// It was triggered by user so start reading of data now and not based on last poll.
sendStatus("Requesting poll now...");
startCgmService(System.currentTimeMillis() + 1000);
} else if (drawerItem.equals(itemClearLog)) {
clearLogText();
} else if (drawerItem.equals(itemCheckForUpdate)) {
checkForUpdateNow();
}
return false;
}
})
.build();
mTextViewLog = (TextView) findViewById(R.id.textview_log);
mScrollView = (ScrollView) findViewById(R.id.scrollView);
mScrollView.setSmoothScrollingEnabled(true);
mChart = (GraphView) findViewById(R.id.chart);
// disable scrolling at the moment
mChart.getViewport().setScalable(false);
mChart.getViewport().setScrollable(false);
mChart.getViewport().setYAxisBoundsManual(true);
mChart.getViewport().setMinY(80);
mChart.getViewport().setMaxY(120);
mChart.getViewport().setXAxisBoundsManual(true);
final long now = System.currentTimeMillis(),
left = now - chartZoom * 60 * 60 * 1000;
mChart.getViewport().setMaxX(now);
mChart.getViewport().setMinX(left);
// due to bug in GraphView v4.2.1 using setNumHorizontalLabels reverted to using v4.0.1 and setOnXAxisBoundsChangedListener is n/a in this version
/*
mChart.getViewport().setOnXAxisBoundsChangedListener(new Viewport.OnXAxisBoundsChangedListener() {
#Override
public void onXAxisBoundsChanged(double minX, double maxX, Reason reason) {
double rightX = mChart.getSeries().get(0).getHighestValueX();
hasZoomedChart = (rightX != maxX || rightX - chartZoom * 60 * 60 * 1000 != minX);
}
});
*/
mChart.setOnLongClickListener(new View.OnLongClickListener() {
#Override
public boolean onLongClick(View v) {
if (!mChart.getSeries().isEmpty() && !mChart.getSeries().get(0).isEmpty()) {
double rightX = mChart.getSeries().get(0).getHighestValueX();
mChart.getViewport().setMaxX(rightX);
mChart.getViewport().setMinX(rightX - chartZoom * 60 * 60 * 1000);
}
hasZoomedChart = false;
return true;
}
});
mChart.getGridLabelRenderer().setNumHorizontalLabels(6);
// due to bug in GraphView v4.2.1 using setNumHorizontalLabels reverted to using v4.0.1 and setHumanRounding is n/a in this version
// mChart.getGridLabelRenderer().setHumanRounding(false);
mChart.getGridLabelRenderer().setLabelFormatter(
new DefaultLabelFormatter() {
DateFormat mFormat = new SimpleDateFormat("HH:mm", Locale.US); // 24 hour format forced to fix label overlap
#Override
public String formatLabel(double value, boolean isValueX) {
if (isValueX) {
return mFormat.format(new Date((long) value));
} else {
return MainActivity.strFormatSGV(value);
}
}
}
);
}
Here is the logcat output:
09-26 12:38:19.826 6324-6324/? I/art: Late-enabling -Xcheck:jni
09-26 12:38:20.157 6324-6324/info.nightscout.android E/Fabric: Failure onPreExecute()
java.lang.IllegalArgumentException: Fabric could not be initialized, API key missing from AndroidManifest.xml. Add the following tag to your Application element
<meta-data android:name="io.fabric.ApiKey" android:value="YOUR_API_KEY"/>
at io.fabric.sdk.android.services.common.ApiKey.logErrorOrThrowException(ApiKey.java:110)
at io.fabric.sdk.android.services.common.ApiKey.getValue(ApiKey.java:61)
at com.crashlytics.android.core.CrashlyticsCore.onPreExecute(CrashlyticsCore.java:219)
at com.crashlytics.android.core.CrashlyticsCore.onPreExecute(CrashlyticsCore.java:207)
at io.fabric.sdk.android.InitializationTask.onPreExecute(InitializationTask.java:44)
at io.fabric.sdk.android.services.concurrency.AsyncTask.executeOnExecutor(AsyncTask.java:611)
at io.fabric.sdk.android.services.concurrency.PriorityAsyncTask.executeOnExecutor(PriorityAsyncTask.java:43)
at io.fabric.sdk.android.Kit.initialize(Kit.java:69)
at io.fabric.sdk.android.Fabric.initializeKits(Fabric.java:440)
at io.fabric.sdk.android.Fabric.init(Fabric.java:384)
at io.fabric.sdk.android.Fabric.setFabric(Fabric.java:342)
at io.fabric.sdk.android.Fabric.with(Fabric.java:313)
at info.nightscout.android.UploaderApplication.onCreate(UploaderApplication.java:32)
at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1046)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5402)
at android.app.ActivityThread.-wrap2(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1541)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6123)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757)
09-26 12:38:20.202 6324-6379/info.nightscout.android E/Fabric: Error dealing with settings
java.lang.IllegalArgumentException: Fabric could not be initialized, API key missing from AndroidManifest.xml. Add the following tag to your Application element
<meta-data android:name="io.fabric.ApiKey" android:value="YOUR_API_KEY"/>
at io.fabric.sdk.android.services.common.ApiKey.logErrorOrThrowException(ApiKey.java:110)
at io.fabric.sdk.android.services.common.ApiKey.getValue(ApiKey.java:61)
at io.fabric.sdk.android.services.settings.Settings.initialize(Settings.java:78)
at io.fabric.sdk.android.Onboarding.retrieveSettingsData(Onboarding.java:124)
at io.fabric.sdk.android.Onboarding.doInBackground(Onboarding.java:99)
at io.fabric.sdk.android.Onboarding.doInBackground(Onboarding.java:45)
at io.fabric.sdk.android.InitializationTask.doInBackground(InitializationTask.java:63)
at io.fabric.sdk.android.InitializationTask.doInBackground(InitializationTask.java:28)
at io.fabric.sdk.android.services.concurrency.AsyncTask$2.call(AsyncTask.java:311)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:428)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
at java.lang.Thread.run(Thread.java:761)
09-26 12:38:20.252 6324-6324/info.nightscout.android W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable
09-26 12:38:20.349 6324-6324/info.nightscout.android I/MainActivity: onCreate called
09-26 12:38:20.652 6324-6324/info.nightscout.android D/AndroidRuntime: Shutting down VM
09-26 12:38:20.652 6324-6324/info.nightscout.android E/AndroidRuntime: FATAL EXCEPTION: main
Process: info.nightscout.android, PID: 6324
java.lang.RuntimeException: Unable to start activity ComponentInfo{info.nightscout.android/info.nightscout.android.medtronic.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.view.View.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2659)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2724)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1473)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6123)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.view.View.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
at info.nightscout.android.medtronic.MainActivity.onCreate(MainActivity.java:349)
at android.app.Activity.performCreate(Activity.java:6672)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1140)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2612)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2724) 
at android.app.ActivityThread.-wrap12(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1473) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:6123) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757) 

Move the code setContentView(R.layout.activity_main);
under the super.onCreate(savedInstanceState);

you are mapping the views before adding layout in your code.
your onCreate() should be
#Override
public void onCreate(Bundle savedInstanceState) {
Log.i(TAG, "onCreate called");
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Do mapping all views

Your Error log is showing you your solution. The project is using Fabric API. So naturally you need to add Fabric API key to your project.
Do as suggested in Error log. Add following line in Android Manifest.
<meta-data android:name="io.fabric.ApiKey" android:value="YOUR_API_KEY"/>
For your API key, make a project using Fabric account and get your API key.

Android App crashes on Lollipop

hi I am using google license checker on my app it works on API 19 and below but crashes on lollipop. I saw the code that has to be add to my license check code but I don't know where to put this code or what should I edit. here is my code
log:
java.lang.IllegalArgumentException: Service Intent must be explicit: Intent { act=com.android.vending.licensing.ILicensingService }
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
Caused by: java.lang.IllegalArgumentException: Service Intent must be explicit: Intent { act=com.android.vending.licensing.ILicensingService }
at android.app.ContextImpl.validateServiceIntent(ContextImpl.java:1674)
at android.app.ContextImpl.bindServiceCommon(ContextImpl.java:1773)
at android.app.ContextImpl.bindService(ContextImpl.java:1751)
at android.content.ContextWrapper.bindService(ContextWrapper.java:538)
at com.google.android.vending.licensing.LicenseChecker.checkAccess(LicenseChecker.java:150)
at appinventor.ai_drsalmanshah165.Clinical_Examination.Splash.doCheck(Splash.java:103)
at appinventor.ai_drsalmanshah165.Clinical_Examination.Splash.onCreate(Splash.java:51)
at android.app.Activity.performCreate(Activity.java:5933)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
... 10 more
Java code:
public class Splash extends Activity {
MyLicenseCheckerCallback mLicenseCheckerCallback;
LicenseChecker mChecker;
byte[] SALT = new byte[] {
my salt no. };
//Handler mHandler;
String BASE64_PUBLIC_KEY="MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoxvDF3HGQtrRch14wCPN6nAxasak8X4shJM6bCumNS+6xRXTnRZOSyAvHNa1145KlE/i1sy/";
Context mContext;
IBinder serviceBinder;
String deviceId;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.splash);
mLicenseCheckerCallback = new MyLicenseCheckerCallback();
deviceId = Secure.getString(getContentResolver(), Secure.ANDROID_ID);
// Construct the LicenseChecker with a policy.
mChecker = new LicenseChecker(
this, (Policy) new ServerManagedPolicy(Splash.this, new AESObfuscator(SALT, getPackageName(), deviceId)),
BASE64_PUBLIC_KEY);
doCheck();
}
private class MyLicenseCheckerCallback implements LicenseCheckerCallback {
#Override
public void allow(int reason) {
// TODO Auto-generated method stub
if (isFinishing()) {
// Don't update UI if Activity is finishing.
return;
}
// Toast.makeText(Splash.this, "License Verified", Toast.LENGTH_SHORT).show();
Intent intent=new Intent(Splash.this,Home.class);
startActivity(intent);
finish();
// Should allow user access.
// so do nothing
}
#Override
public void dontAllow(int reason) {
// TODO Auto-generated method stub
if (isFinishing()) {
// Don't update UI if Activity is finishing.
return;
}
// Toast.makeText(Splash.this, "License Verification Failed", Toast.LENGTH_SHORT).show();
createDialog();
}
#Override
public void applicationError(int errorCode) {
// TODO Auto-generated method stub
}
}
#Override
protected void onDestroy() {
super.onDestroy();
mChecker.onDestroy();
}
private void doCheck() {
// mCheckLicenseButton.setEnabled(false);
setProgressBarIndeterminateVisibility(true);
/// mStatusText.setText(R.string.checking_license);
mChecker.checkAccess(mLicenseCheckerCallback);
}
public void createDialog(){
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("PIRACY WARNING");
builder.setMessage("This application is not licensed. Please purchase it from Android Market. If you received this message in error, please contact Support.");
builder.setPositiveButton("Buy Now", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent marketIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(
"http://market.android.com/details?id=" + getPackageName()));
startActivity(marketIntent);
}
});
builder.setNegativeButton("Quit", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
finish();
}
});
AlertDialog dialog = builder.create();
dialog.show();
}
}
and here is the other code which I got that this can solve my problem. but don't know where to put it.
Intent serviceIntent = new Intent(
new String(Base64.decode("Y29tLmFuZHJvaWQudmVuZGluZy5saWNlbnNpbmcuSUxpY2Vuc2luZ1NlcnZpY2U=")));
serviceIntent.setPackage("com.android.vending");
boolean bindResult = mContext
.bindService(
serviceIntent,
this, // ServiceConnection.
Context.BIND_AUTO_CREATE);

Waiting for an official solution, the current solution consists in patching Google's LicenseChecker class
com.google.android.vending.licensing.LicenseChecker.checkAccess(LicenseChecker.java:150)
like this:
new String(
- Base64.decode("Y29tLmFuZHJvaWQudmVuZGluZy5saWNlbnNpbmcuSUxpY2Vuc2luZ1NlcnZpY2U="))),
+ Base64.decode("Y29tLmFuZHJvaWQudmVuZGluZy5saWNlbnNpbmcuSUxpY2Vuc2luZ1NlcnZpY2U=")))
+ .setPackage("com.android.vending"), // this fix the 'IllegalArgumentException: Service Intent must be explicit'
this, // ServiceConnection.
Adding package name with statement setPackage("com.android.vending") makes the Intent explicit, i.e., 'safe' (as requested by Android Lollipop )
Note:
Please pay attention as after modifying LicenseChecker class you must change the min sdk version from 3 to 4 (thanks russellhoff)
Source:
https://code.google.com/p/android/issues/detail?id=78505#c19