DiscreteScrollView | scrollable list of items that centers the current element | RecyclerView library

by yarolegovich Java Version: v1.5.1 License: No License

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kandi X-RAY | DiscreteScrollView Summary

DiscreteScrollView is a Java library typically used in User Interface, RecyclerView applications. DiscreteScrollView has no bugs, it has no vulnerabilities, it has build file available and it has medium support. You can download it from GitHub.

The library is a RecyclerView-based implementation of a scrollable list, where current item is centered and can be changed using swipes. It is similar to a ViewPager, but you can quickly and painlessly create layout, where views adjacent to the currently selected view are partially or fully visible on the screen.

Support

Quality

Security

License

Reuse

kandi-support Support

DiscreteScrollView has a medium active ecosystem.
It has 5448 star(s) with 740 fork(s). There are 101 watchers for this library.
It had no major release in the last 12 months.
There are 38 open issues and 148 have been closed. On average issues are closed in 504 days. There are 1 open pull requests and 0 closed requests.
It has a neutral sentiment in the developer community.
The latest version of DiscreteScrollView is v1.5.1

DiscreteScrollView Support

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Average in #RecyclerView

DiscreteScrollView Support

Best in #RecyclerView

Average in #RecyclerView

quality kandi Quality

DiscreteScrollView has 0 bugs and 0 code smells.

DiscreteScrollView Quality

Best in #RecyclerView

Average in #RecyclerView

DiscreteScrollView Quality

Best in #RecyclerView

Average in #RecyclerView

security Security

DiscreteScrollView has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
DiscreteScrollView code analysis shows 0 unresolved vulnerabilities.
There are 0 security hotspots that need review.

DiscreteScrollView Security

Best in #RecyclerView

Average in #RecyclerView

DiscreteScrollView Security

Best in #RecyclerView

Average in #RecyclerView

license License

DiscreteScrollView does not have a standard license declared.
Check the repository for any license declaration and review the terms closely.
Without a license, all rights are reserved, and you cannot use the library in your applications.

DiscreteScrollView License

Best in #RecyclerView

Average in #RecyclerView

DiscreteScrollView License

Best in #RecyclerView

Average in #RecyclerView

build Reuse

DiscreteScrollView releases are available to install and integrate.
Build file is available. You can build the component from source.
Installation instructions are not available. Examples and code snippets are available.
It has 4299 lines of code, 462 functions and 61 files.
It has medium code complexity. Code complexity directly impacts maintainability of the code.

DiscreteScrollView Reuse

Best in #RecyclerView

Average in #RecyclerView

DiscreteScrollView Reuse

Best in #RecyclerView

Average in #RecyclerView

Top functions reviewed by kandi - BETA

kandi has reviewed DiscreteScrollView and discovered the below as its top functions. This is intended to give you an instant insight into DiscreteScrollView implemented functionality, and help decide if they suit your requirements.

Called when the activity is created .
Set the pivot point on a view
Calculates the allowed scroll in the given direction .
Smooth scroll to a user - selected position .
Returns the closest position to the given position .
Initializes the layout manager .
Sets the weather preview .
Searches for a scroll .
Open the Snackbar .
Create view holder .

DiscreteScrollView Key Features

A scrollable list of items that centers the current element and provides easy-to-use APIs for cool item animations.

DiscreteScrollView Examples and Code Snippets

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Gradle

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compile 'com.yarolegovich:discrete-scrollview:1.5.1'

General

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&lt;com.yarolegovich.discretescrollview.DiscreteScrollView
  android:id="@+id/picker"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  app:dsv_orientation="horizontal|vertical" /&gt;  &lt;!-- orientation is optional, default is horizontal --&gt;

API

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scrollView.setOrientation(DSVOrientation o); //Sets an orientation of the view
scrollView.setOffscreenItems(count); //Reserve extra space equal to (childSize * count) on each side of the view
scrollView.setOverScrollEnabled(enabled); //Can also be set using android:overScrollMode xml attribute

License

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Copyright 2017 Yaroslav Shevchuk

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

NullPointerException when running from Google Play but not from Android Studio

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if ("your_component" != null){
//your code
}

-----------------------

public CardHolder onCreateViewHolder(ViewGroup parent, int viewType) {
                                //inflate the single recycler view layout(item)
                           //  !!!!!!!!!!!!! **the issue is here**! !!!!!!!!!!!!!!!
                                View view = LayoutInflater.from(parent.getContext())
                                        .inflate(R.layout.card_product, parent, false);
                                final CardHolder cardViewHolder = new CardHolder(view);
                                return cardViewHolder;
                            }

public class yourActivity extends AppCompatActivity{
   YourAdapter mAdapter; 
/// lets say you are setting it up in android ONCREATE Method
@override
public void OnCreate(....){
...........

mAdapter(data,design,YourActivity.this);
 //here this will be the context going in your adapter simple

}

}

public class YourAdapter extends RECYCLERView.Adapter......{
Context mContext;
public YourAdapter(Data data, int design,Context mContext)
this.mContext = mContext;
}
//and now you can access without any stress about context null exception 
   public CardHolder onCreateViewHolder(ViewGroup parent, int viewType) {
                            //inflate the single recycler view layout(item)
                            View view = LayoutInflater.from(mContext)
                                    .inflate(R.layout.card_product, parent, false);
                            final CardHolder cardViewHolder = new CardHolder(view);
                            return cardViewHolder;
                        }

-----------------------

public CardHolder onCreateViewHolder(ViewGroup parent, int viewType) {
                                //inflate the single recycler view layout(item)
                           //  !!!!!!!!!!!!! **the issue is here**! !!!!!!!!!!!!!!!
                                View view = LayoutInflater.from(parent.getContext())
                                        .inflate(R.layout.card_product, parent, false);
                                final CardHolder cardViewHolder = new CardHolder(view);
                                return cardViewHolder;
                            }

public class yourActivity extends AppCompatActivity{
   YourAdapter mAdapter; 
/// lets say you are setting it up in android ONCREATE Method
@override
public void OnCreate(....){
...........

mAdapter(data,design,YourActivity.this);
 //here this will be the context going in your adapter simple

}

}

public class YourAdapter extends RECYCLERView.Adapter......{
Context mContext;
public YourAdapter(Data data, int design,Context mContext)
this.mContext = mContext;
}
//and now you can access without any stress about context null exception 
   public CardHolder onCreateViewHolder(ViewGroup parent, int viewType) {
                            //inflate the single recycler view layout(item)
                            View view = LayoutInflater.from(mContext)
                                    .inflate(R.layout.card_product, parent, false);
                            final CardHolder cardViewHolder = new CardHolder(view);
                            return cardViewHolder;
                        }

-----------------------

public CardHolder onCreateViewHolder(ViewGroup parent, int viewType) {
                                //inflate the single recycler view layout(item)
                           //  !!!!!!!!!!!!! **the issue is here**! !!!!!!!!!!!!!!!
                                View view = LayoutInflater.from(parent.getContext())
                                        .inflate(R.layout.card_product, parent, false);
                                final CardHolder cardViewHolder = new CardHolder(view);
                                return cardViewHolder;
                            }

public class yourActivity extends AppCompatActivity{
   YourAdapter mAdapter; 
/// lets say you are setting it up in android ONCREATE Method
@override
public void OnCreate(....){
...........

mAdapter(data,design,YourActivity.this);
 //here this will be the context going in your adapter simple

}

}

public class YourAdapter extends RECYCLERView.Adapter......{
Context mContext;
public YourAdapter(Data data, int design,Context mContext)
this.mContext = mContext;
}
//and now you can access without any stress about context null exception 
   public CardHolder onCreateViewHolder(ViewGroup parent, int viewType) {
                            //inflate the single recycler view layout(item)
                            View view = LayoutInflater.from(mContext)
                                    .inflate(R.layout.card_product, parent, false);
                            final CardHolder cardViewHolder = new CardHolder(view);
                            return cardViewHolder;
                        }

See all related Code Snippets

Community Discussions

Trending Discussions on DiscreteScrollView

gradlew app:dependencies command is not working
NullPointerException when running from Google Play but not from Android Studio

Trending Discussions on DiscreteScrollView

QUESTION

gradlew app:dependencies command is not working

Asked 2018-May-18 at 17:43

I am getting errors when running command gradlew app:dependencies. I want to check which dependency are making conflict. Because my project is not compiling after adding twitter dependency. So i disabled twitter dependency and tried to check which of module if using google.gms package. So i can exclude that.

Failed to notify project evaluation listener. javax/xml/bind/annotation/XmlSchema

Then tried changing version of gradle wrapper or gradle plugin. got this error.

Failed to notify project evaluation listener. Could not initialize class com.android.sdklib.repository.AndroidSdkHandler

Then after some change again by searching this error.

Could not determine java version from '9.0.4'.

I can run app but i can not see dependency tree.

What is this, i am stuck of hours :(

app level build.gradle

apply plugin: 'com.android.application'
apply plugin: 'io.objectbox'
android {
    compileSdkVersion rootProject.ext.compileSdkVersion
    buildToolsVersion rootProject.ext.buildToolsVersion
    defaultConfig {
        applicationId "com.amelio"
        minSdkVersion rootProject.ext.minSdkVersion
        targetSdkVersion rootProject.ext.targetSdkVersion
        versionCode 1
        versionName "1.0"
        multiDexEnabled true
        setProperty("archivesBaseName", applicationId + "-v" + versionCode + "(" + versionName + ")")
    }
    buildTypes {
        debug {
            versionNameSuffix "-T"
        }
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            versionNameSuffix "-R"
        }
    }
    dataBinding {
        enabled = true
    }
    compileOptions {
        sourceCompatibility rootProject.ext.sourceCompatibilityVersion
        targetCompatibility rootProject.ext.targetCompatibilityVersion
    }
    dexOptions {
        javaMaxHeapSize "4g"
    }
}

def SDP_VERSION = '1.0.5'
def PERCELER_VERSION = '1.1.10'

dependencies {
//    implementation rootProject.ext.dep.firebaseAuth
    configurations {
        all*.exclude group: 'com.android.support', module: 'support-v13'
    }
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation rootProject.ext.dep.supportAppcompatV7
    implementation rootProject.ext.dep.supportRecyclerViewV7
    implementation rootProject.ext.dep.supportV4
    implementation rootProject.ext.dep.supportDesign
    implementation rootProject.ext.dep.playServicesAuth
    implementation rootProject.ext.dep.retrofit2ConverterGson
    implementation rootProject.ext.dep.retrofit2
    implementation rootProject.ext.dep.playServicesLocation
    implementation rootProject.ext.dep.playServicesMaps
    implementation rootProject.ext.dep.playServicesPlaces
    implementation rootProject.ext.dep.firebaseMessaging
    implementation rootProject.ext.dep.materialDatePicker
    implementation 'com.squareup.okhttp3:logging-interceptor:3.10.0'
    implementation 'com.facebook.android:facebook-android-sdk:4.31.0'
    implementation 'com.theartofdev.edmodo:android-image-cropper:2.7.+'
    implementation "com.intuit.sdp:sdp-android:$SDP_VERSION"
    implementation "com.intuit.ssp:ssp-android:$SDP_VERSION"
    implementation rootProject.ext.dep.picasso
    implementation 'com.wdullaer:materialdatetimepicker:3.5.1'
    implementation 'me.dm7.barcodescanner:zbar:1.9.8'
//  implementation 'com.google.android.gms:play-services:11.6.0'
    implementation 'com.android.support:multidex:1.0.3'
    implementation 'org.florescu.android.rangeseekbar:rangeseekbar-library:0.3.0'
    implementation "org.parceler:parceler-api:$PERCELER_VERSION"
    annotationProcessor "org.parceler:parceler:$PERCELER_VERSION"
    implementation rootProject.ext.dep.butterKnife
    annotationProcessor rootProject.ext.dep.butterKnifeCompiler
//    compile 'com.razorpay:checkout:1.4.7'
    implementation('com.razorpay:checkout:1.4.1')
//    implementation('com.twitter.sdk.android:twitter:3.3.0@aar') {
//        transitive = true
//    }
}
apply plugin: 'com.google.gms.google-services'

project level build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.
apply from: rootProject.file('dependencies.gradle')

buildscript {
    ext.objectboxVersion = '1.5.0'
    repositories {
        jcenter()
        maven {
            url 'https://maven.google.com/'
        }
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'
//        classpath 'com.android.tools.build:gradle:3.1.2'
        classpath 'com.google.gms:google-services:3.2.0'
        classpath "io.objectbox:objectbox-gradle-plugin:$objectboxVersion"
    }
}
allprojects {
    repositories {
        jcenter()
        maven {
            url 'https://maven.google.com/'
        }
    }
}
task clean(type: Delete) {
    delete rootProject.buildDir
}

gradle-wrapper.properties

#Wed May 16 15:37:31 IST 2018
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip

Another file dependencies.gradle which i use to define all dependency versions.

ext {
    compileSdkVersion = 27
    buildToolsVersion = '27.0.3'
    minSdkVersion = 15
    targetSdkVersion = 27
    sourceCompatibilityVersion = JavaVersion.VERSION_1_8
    targetCompatibilityVersion = JavaVersion.VERSION_1_8

    SUPPORT_LIB_VER = '27.1.0'
    PLAY_SERVICES_VER = '15.0.0'
    FIREBASE_VER = '15.0.0'
    RX_BINDING_VER = '2.0.0'
    DAGGER2_VER = '2.11-rc2'
    BOLTS_VER = '1.4.0'
    RETROFIT_VER = "2.1.0"
    OKHTTP_VER = '3.0.1'
    BUTTER_KNIFE_VER = '8.5.1'

    dep = [
            // Google Support Library.
            supportV4              : "com.android.support:support-v4:$SUPPORT_LIB_VER",
            supportV4CoreUtils     : "com.android.support:support-core-utils:$SUPPORT_LIB_VER",
            supportAppcompatV7     : "com.android.support:appcompat-v7:$SUPPORT_LIB_VER",
            supportRecyclerViewV7  : "com.android.support:recyclerview-v7:${SUPPORT_LIB_VER}",
            supportCardViewV7      : "com.android.support:cardview-v7:${SUPPORT_LIB_VER}",
            supportGridLayoutV7    : "com.android.support:gridlayout-v7:${SUPPORT_LIB_VER}",
            supportAnnotations     : "com.android.support:support-annotations:$SUPPORT_LIB_VER",
            supportDesign          : "com.android.support:design:${SUPPORT_LIB_VER}",
            supportVectorDrawable  : "com.android.support:support-vector-drawable:${SUPPORT_LIB_VER}",
            supportPercent         : "com.android.support:percent:${SUPPORT_LIB_VER}",
            supportTransition      : "com.android.support:transition:${SUPPORT_LIB_VER}",
            supportConstraintLayout: "com.android.support.constraint:constraint-layout:1.0.2",
            supportMultidex        : 'com.android.support:multidex:1.0.1',
            // Google Play Service.
            playServicesAds        : "com.google.android.gms:play-services-ads:${PLAY_SERVICES_VER}",
            playServicesAnalytics  : "com.google.android.gms:play-services-analytics:${PLAY_SERVICES_VER}",
            playServicesVision     : "com.google.android.gms:play-services-vision:${PLAY_SERVICES_VER}",
            playServicesMaps       : "com.google.android.gms:play-services-maps:${PLAY_SERVICES_VER}",
            playServicesPlaces     : "com.google.android.gms:play-services-places:${PLAY_SERVICES_VER}",
            playServicesAuth       : "com.google.android.gms:play-services-auth:${PLAY_SERVICES_VER}",
            playServicesLocation   : "com.google.android.gms:play-services-location:${PLAY_SERVICES_VER}",
            // Google Firebase.
            firebaseCore           : "com.google.firebase:firebase-core:${FIREBASE_VER}",
            firebaseAnalytics      : "com.google.firebase:firebase-analytics:${FIREBASE_VER}",
            firebaseAuth           : 'com.google.firebase:firebase-auth:15.0.0',
            firebaseConfig         : "com.google.firebase:firebase-config:${FIREBASE_VER}",
            firebaseCrash          : "com.google.firebase:firebase-crash:${FIREBASE_VER}",
            firebaseMessaging      : "com.google.firebase:firebase-messaging:${FIREBASE_VER}",
            firebaseInvites        : "com.google.firebase:firebase-invites:${FIREBASE_VER}",
            firebasePerf           : "com.google.firebase:firebase-perf:${FIREBASE_VER}",
            // Facebook.
            facebook               : 'com.facebook.android:facebook-android-sdk:4.18.0',
            facebookAudienceNetwork: 'com.facebook.android:audience-network-sdk:4.17.0',
            // JSON.
            gson                   : "com.google.code.gson:gson:2.7",
            // Image.
//            fresco                 : "com.facebook.fresco:fresco:0.14.1",
//            glide                  : "com.github.bumptech.glide:glide:3.7.0",
//            lottie                 : 'com.airbnb.android:lottie:2.0.0-rc1',
            picasso                 : 'com.squareup.picasso:picasso:2.5.2',
//            adobeFoundation        : 'com.adobe.creativesdk.foundation:auth:0.9.1251',
//            adobeImage             : 'com.adobe.creativesdk:image:4.8.3',
            // RxJava.
//            rxJava                 : 'io.reactivex.rxjava2:rxjava:2.1.0',
//            rxAndroid              : 'io.reactivex.rxjava2:rxandroid:2.0.1',
//            rxRelay                : 'com.jakewharton.rxrelay2:rxrelay:2.0.0',
//            rxBinding              : "com.jakewharton.rxbinding2:rxbinding:${RX_BINDING_VER}",
//            rxBindingRecyclerViewV7: "com.jakewharton.rxbinding2:rxbinding-recyclerview-v7:${RX_BINDING_VER}",
//            rxPermissions          : 'com.tbruyelle.rxpermissions2:rxpermissions:0.9.4@aar',
            // View Binding.
            butterKnife            : "com.jakewharton:butterknife:${BUTTER_KNIFE_VER}",
            butterKnifeCompiler    : "com.jakewharton:butterknife-compiler:${BUTTER_KNIFE_VER}",
            // Dependency Injection.
//            dagger2                : "com.google.dagger:dagger:${DAGGER2_VER}",
//            dagger2Support         : "com.google.dagger:dagger-android-support:${DAGGER2_VER}",
//            dagger2Compiler        : "com.google.dagger:dagger-compiler:${DAGGER2_VER}",
            // Leak Detection.
            leakcanary             : 'com.squareup.leakcanary:leakcanary-android:1.5.1',
            leakcanaryNoOp         : 'com.squareup.leakcanary:leakcanary-android-no-op:1.5.1',
            // Custom View.
//            discreteScrollView     : 'com.yarolegovich:discrete-scrollview:1.2.0',
            // ASYNC.
//            bolts                  : "com.parse.bolts:bolts-tasks:$BOLTS_VER",
            // BUS.
//            ottoBus                : 'com.squareup:otto:1.3.6',
            // HTTP/HTTPS.
            retrofit2              : "com.squareup.retrofit2:retrofit:${RETROFIT_VER}",
            retrofit2ConverterGson : "com.squareup.retrofit2:converter-gson:${RETROFIT_VER}",
//            retrofit2RxJava2Adapter: 'com.jakewharton.retrofit:retrofit2-rxjava2-adapter:1.0.0',
            okhttp                 : "com.squareup.okhttp3:okhttp:$OKHTTP_VER",
//            okhttpMockWebServer    : "com.squareup.okhttp3:mockwebserver:$OKHTTP_VER",
//            volley                 : 'com.android.volley:volley:1.0.0',
            // TESTING.
//            testJunit              : 'junit:junit:4.12',
//            testMockito            : 'org.mockito:mockito-core:2.8.9',
//            testEspressoCore       : 'com.android.support.test.espresso:espresso-core:2.2.2',
//            testRunner             : 'com.android.support.test:runner:0.5',
            materialDatePicker     : 'com.wdullaer:materialdatetimepicker:3.5.0'
    ]
}

searched a lot some of them are.

I am having a difficulty with first time react-native run-android. The Error looks like this following

occurred configuring project ':app'. > Failed to notify project evaluation listener

Could not determine java version from '9.0.1'

ANSWER

Answered 2018-May-18 at 17:43

Updating all dependencies worked for me.

Source https://stackoverflow.com/questions/50404539

QUESTION

NullPointerException when running from Google Play but not from Android Studio

Asked 2018-May-06 at 14:06

I'm having a big issue, I do not know what's happening, I've uploaded an app to Play Store because when I was running it on an Emulator or even on my real device it wasn't crashing, but now when I download it from Google Play it says :

java.lang.NullPointerException: 
  at com..onBindViewHolder (ChooseCard.java)
  or                     .onCreateViewHolder (ChooseCard.java)
  at com..onBindViewHolder (ChooseCard.java)
  or                     .onCreateViewHolder (ChooseCard.java)
  at com.firebase.ui.database.FirebaseRecyclerAdapter.getItemCount (FirebaseRecyclerAdapter.java)
  or                     .onBindViewHolder (FirebaseRecyclerAdapter.java)
  or                     .onChildChanged (FirebaseRecyclerAdapter.java)
  or                     .onError (FirebaseRecyclerAdapter.java)
  at com.yarolegovich.discretescrollview.InfiniteScrollAdapter.access$100 (InfiniteScrollAdapter.java)
  or                     .getItemCount (InfiniteScrollAdapter.java)
  or                     .getItemViewType (InfiniteScrollAdapter.java)
  or                     .onAttachedToRecyclerView (InfiniteScrollAdapter.java)
  or                     .onBindViewHolder (InfiniteScrollAdapter.java)
  or                     .onCreateViewHolder (InfiniteScrollAdapter.java)
  or                     .wrap (InfiniteScrollAdapter.java)

It's been days with this issue and I can't find it out, could you give me a hand please?

There's my build.gradle implementations

implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.0'
implementation 'com.android.support:design:27.1.1'
implementation 'com.intuit.sdp:sdp-android:1.0.4'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
implementation 'com.android.support:cardview-v7:27.1.1'
implementation 'com.google.firebase:firebase-core:15.0.0'
implementation 'com.google.firebase:firebase-auth:15.0.0'
implementation 'com.google.android.gms:play-services-auth:15.0.0'
implementation 'com.google.firebase:firebase-database:15.0.0'
implementation 'com.anjlab.android.iab.v3:library:1.0.44'
implementation 'com.firebaseui:firebase-ui-database:3.3.1'
implementation 'com.onesignal:OneSignal:3.7.1'
implementation 'com.yarolegovich:discrete-scrollview:1.3.2'
implementation 'com.pranavpandey.android:dynamic-toasts:0.9.0'
implementation 'pl.droidsonroids.gif:android-gif-drawable:1.2.11'
implementation 'com.google.android.gms:play-services-analytics:15.0.0'
.....
 dependencies {
        classpath 'com.android.tools.build:gradle:3.1.2'
        classpath 'com.google.gms:google-services:3.2.1'

Edit

I've updated my app on Google Play and nothing happens, still crashing on the same Activity, I do now know what to do to debug this, the problem is when I download the app from Google Play, on Emulator (even in a new emulator device is not crashing) and on my real device.

As @Marcos Vascondelos said, I did Build > Genereate Signed APK > get the app-release.apk install it on my device and the problem is that I can not login it is going to this method :

 @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        // Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
        if (requestCode == RC_SIGN_IN) {
            Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
            try {
                // Google Sign In was successful, authenticate with Firebase
                GoogleSignInAccount account = task.getResult(ApiException.class);
                firebaseAuthWithGoogle(account);
            } catch (ApiException e) {
                // Google Sign In failed, update UI appropriately
                Log.w(TAG, "Google sign in failed", e.getCause());
                Toast with e.getCause is null
            }
        }
    }

If you want to see how do I login to not put more code on this question I put on this GitHubGist

I've read that it could be problems with SHA-1, but I don't know why on emulator is ok, device is ok, Google play is ok, but if I install the .apk directly it says null.

LAST EDIT

I see the problem is not on the Firebase call, is on the populate the list, I mean the products are caught correctly, but when I try to put into the list is where it crashes

My FirebaseRecyclerOptions adapter looks like

 final FirebaseRecyclerOptions< CardPOJO > options =
                    new FirebaseRecyclerOptions.Builder< CardPOJO >()
                            .setQuery(products_ref, CardPOJO.class)
                            .build();



            adapter = new   FirebaseRecyclerAdapter< CardPOJO, CardHolder>(options) {
                @Override
                public CardHolder onCreateViewHolder(ViewGroup parent, int viewType) {
                    //inflate the single recycler view layout(item)
                    View view = LayoutInflater.from(parent.getContext())
                            .inflate(R.layout.card_product, parent, false);
                    final CardHolder cardViewHolder = new CardHolder(view);
                    return cardViewHolder;
                }



                @Override
                public void onDataChanged() {
                    super.onDataChanged();
                    if(progressDialog!=null)progressDialog.dismiss();initViews();
                }


                @Override
                protected void onBindViewHolder(final CardHolder holder, int position, final CardPOJO model) {
                    holder.itemView.setSelected(0== position); ////where you are in the list
                    holder.getLayoutPosition();
                    switch (model.getState()){
                        case "free":
                            holder.card_image.setImageResource();
                            break;
                        case "not_free":
                            if(userOwnsProduct(model.getProduct_id())){
                                holder.card_image.setImageResource();
                            }
                            else{
                                holder.card_image.setImageResource();
                            }

                            break;
                        default:
                            break;
                    }
                    holder.view.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            if(model.getState().equals("free")){
                                //normal stuff1

                            }
                            else{
                                if (!readyToPurchase) {
                                    DynamicToast.makeError(mContext,"Problems with Google Play",Toast.LENGTH_SHORT).show();
                                    return;
                                }
                                root_ref.child("PurchasedProducts").child(currentUser).addValueEventListener(new ValueEventListener() {
                                    @Override
                                    public void onDataChange(DataSnapshot dataSnapshot) {
                                        if(dataSnapshot.hasChild(model.getProduct_id())){
                                            //Normal stuff
                                        }
                                        else{
                                            bp.purchase((Activity) mContext,model.getProduct_id());
                                        }
                                    }

                                    @Override
                                    public void onCancelled(DatabaseError databaseError) {

                                    }
                                });

                            }

                        }
                    });


                }

            };
            adapter.startListening();



            infiniteAdapter = InfiniteScrollAdapter.wrap(adapter);
            itemPicker.setAdapter(infiniteAdapter);
            //.setItemTransitionTimeMillis(DiscreteScrollViewOptions.getTransitionTime());
            itemPicker.setItemTransformer(new ScaleTransformer.Builder()
                    .setMinScale(0.5f)
                    .build());

ANSWER

Answered 2018-Apr-25 at 13:12

Remember , always check if component is null or not . Than execute your code . example :

if ("your_component" != null){
//your code
}

Source https://stackoverflow.com/questions/50022813

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Vulnerabilities

No vulnerabilities reported

Install DiscreteScrollView

You can download it from GitHub.
You can use DiscreteScrollView like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the DiscreteScrollView component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .