I am Getting a null pointer exception in this code, but I am unable to track its source.Normally Exception provide details about which activity is generating it but it is different.It occurs on some devices only. I searched the exception on internet but found nothing helpful yet. I would appreciate any help. Thanks
public class MainActivity extends AppCompatActivity {
Button capture;
ImageView iv;
private Fragment fragment;
private FragmentManager fragmentManager;
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
ViewPagerAdapter adapter;
private AdView mAdView;
public static BadgeView badge;
/*private FirebaseRemoteConfig mFirebaseRemoteConfig;
public static int remote_counter;*/
public static int counter;
public static final String PREFS = "Badge";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_icon_text_tabs);
mAdView = (AdView) findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder()//.addTestDevice("8224D21A28DA92B60EB105E7FD793AF4")
.build();
mAdView.loadAd(adRequest);
mAdView.setAdListener(new AdListener() {
@Override
public void onAdClosed() {
super.onAdClosed();
}
@Override
public void onAdLoaded() {
super.onAdLoaded();
mAdView.setVisibility(View.VISIBLE);
}
});
viewPager = (ViewPager) findViewById(R.id.viewpager);
viewPager.setOffscreenPageLimit(3);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
setupTabIcons();
}
private void setupTabIcons() {
TextView tabOne = (TextView) LayoutInflater.from(this).inflate(R.layout.custom_tab, null);
tabOne.setText("Facebook");
tabOne.setCompoundDrawablesWithIntrinsicBounds(0, R.drawable.fb, 0, 0);
tabLayout.getTabAt(0).setCustomView(tabOne);
TextView tabTwo = (TextView) LayoutInflater.from(this).inflate(R.layout.custom_tab, null);
tabTwo.setText("Videos");
tabTwo.setCompoundDrawablesWithIntrinsicBounds(0, R.drawable.videos, 0, 0);
tabLayout.getTabAt(1).setCustomView(tabTwo);
TextView tabThree = (TextView) LayoutInflater.from(this).inflate(R.layout.custom_tab, null);
tabThree.setText("Downloads");
tabThree.setCompoundDrawablesWithIntrinsicBounds(0, R.drawable.downloading, 0, 0);
tabLayout.getTabAt(2).setCustomView(tabThree);
SharedPreferences settings = getSharedPreferences(PREFS, MODE_PRIVATE);
int temp = settings.getInt("badge_counter", 0);
View target = tabLayout.getTabAt(2).getCustomView();
badge = new BadgeView(this, target);
badge.setBadgePosition(BadgeView.POSITION_TOP_RIGHT);
// badge.setText(String.valueOf(temp));
badge.setBadgeMargin(3, 0);
//badge.show();
//
if (temp > 0) {
badge.setText(String.valueOf(temp));
badge.show();
}
}
private void setupViewPager(ViewPager viewPager) {
adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFrag(new Facebook_Fragment(), "Facebook");
adapter.addFrag(new Downloads_Fragment(), "Videos");
adapter.addFrag(new Current_Downlaod(), "Downloads");
viewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFrag(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (grantResults.length > 0 && ActivityCompat.checkSelfPermission(MainActivity.this, permissions[0]) == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(MainActivity.this, "Permission granted", Toast.LENGTH_SHORT).show();
((Downloads_Fragment) adapter.getItem(1)).updateDownloads();
} else {
Toast.makeText(MainActivity.this, "Permission denied", Toast.LENGTH_SHORT).show();
}
}
@Override
public void onPause() {
if (mAdView != null) {
mAdView.pause();
}
super.onPause();
}
@Override
public void onDestroy() {
if (mAdView != null) {
mAdView.destroy();
}
super.onDestroy();
}
@Override
public void onResume() {
super.onResume();
if (mAdView != null) {
mAdView.resume();
}
}
}
and I get this exception on some of the devices. It works perfectly on android kitkat and jelly bean which I have tested my self. But I get crash reports on lollipop, marshmallow, nougat.
java.lang.NullPointerException:
at com.kpsd.activity.c.<init>(Unknown Source:0)
at com.kpsd.a.b$1.run(Unknown Source:0)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5451)
at java.lang.reflect.Method.invoke(Native Method:0)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
