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Randy Webster
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Update to RxJava 2.0.0 release.
Skip onNext for null values in Callbacks. Add example project.
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‎README.md‎

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# RxLoader
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[![License](http://img.shields.io/badge/License-Apache%202.0-blue.svg?style=flat-square)](http://www.apache.org/licenses/LICENSE-2.0)
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[![API](https://img.shields.io/badge/API-16%2B-blue.svg?style=flat-square)](https://developer.android.com/about/versions/android-4.1.html)
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[![Download](https://img.shields.io/badge/JCenter-2.0.0--RC2-brightgreen.svg?style=flat-square)](https://bintray.com/l4digital/maven/RxLoader/_latestVersion)
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[![Download](https://img.shields.io/badge/JCenter-2.0.0-brightgreen.svg?style=flat-square)](https://bintray.com/l4digital/maven/RxLoader/_latestVersion)
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An Android Loader that wraps an RxJava Observable.
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#### Gradle:
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~~~groovy
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dependencies {
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compile 'com.l4digital.rxloader:rxloader:2.0.0-RC2'
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compile 'com.l4digital.rxloader:rxloader:2.0.0'
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}
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~~~
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<dependency>
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<groupId>com.l4digital.rxloader</groupId>
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<artifactId>rxloader</artifactId>
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<version>2.0.0-RC2</version>
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<version>2.0.0</version>
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</dependency>
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~~~
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‎example/build.gradle‎

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/*
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* Copyright 2016 L4 Digital LLC. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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apply plugin: 'com.android.application'
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ext {
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supportLibVersion = '24.2.1'
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}
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android {
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compileSdkVersion 24
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buildToolsVersion "24.0.2"
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defaultConfig {
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applicationId "com.l4digital.rxloader.example"
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minSdkVersion 16
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targetSdkVersion 24
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versionCode 1
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versionName "1.0"
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testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
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}
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buildTypes {
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release {
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minifyEnabled true
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shrinkResources true
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proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
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}
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}
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}
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dependencies {
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compile project(':rxloader')
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compile "com.android.support:appcompat-v7:${supportLibVersion}"
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}

‎example/proguard-rules.pro‎

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# Add project specific ProGuard rules here.
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# By default, the flags in this file are appended to flags specified
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# in /Users/randy/Development/Android/sdk/tools/proguard/proguard-android.txt
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# You can edit the include path and order by changing the proguardFiles
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# directive in build.gradle.
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#
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# For more details, see
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# http://developer.android.com/guide/developing/tools/proguard.html
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# Add any project specific keep options here:
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# If your project uses WebView with JS, uncomment the following
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# and specify the fully qualified class name to the JavaScript interface
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# class:
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#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
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# public *;
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#}

‎example/src/main/AndroidManifest.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<!--
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~ Copyright 2016 L4 Digital LLC. All rights reserved.
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~
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~ Licensed under the Apache License, Version 2.0 (the "License");
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~ you may not use this file except in compliance with the License.
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~ You may obtain a copy of the License at
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~
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~ http://www.apache.org/licenses/LICENSE-2.0
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~
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~ Unless required by applicable law or agreed to in writing, software
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~ distributed under the License is distributed on an "AS IS" BASIS,
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~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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~ See the License for the specific language governing permissions and
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~ limitations under the License.
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-->
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<manifest
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xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.l4digital.rxloader.example">
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<application
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android:allowBackup="false"
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android:icon="@mipmap/ic_launcher"
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android:label="@string/app_name"
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android:theme="@style/AppTheme">
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<activity
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android:name=".ExampleActivity"
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android:configChanges="keyboardHidden|orientation|screenSize">
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎example/src/main/java/com/l4digital/rxloader/example/ExampleActivity.java‎

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/*
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* Copyright 2016 L4 Digital LLC. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.l4digital.rxloader.example;
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import android.os.Bundle;
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import android.support.v7.app.AppCompatActivity;
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import android.view.View;
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import android.widget.TextView;
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import com.l4digital.rxloader.RxLoader;
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import com.l4digital.rxloader.RxLoaderCallbacks;
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import java.util.concurrent.TimeUnit;
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import io.reactivex.Observable;
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import io.reactivex.Observer;
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import io.reactivex.disposables.Disposable;
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import io.reactivex.functions.Function;
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import io.reactivex.functions.Predicate;
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public class ExampleActivity extends AppCompatActivity implements Observer<String> {
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private static final String[] sVersionNames = new String[]{
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"Cupcake", "Donut", "Eclair", "Froyo", "Gingerbread", "Honeycomb", "Ice Cream Sandwich",
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"Jelly Bean", "KitKat", "Lollipop", "Marshmallow", "Nougat"
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};
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private Disposable mDisposable;
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private TextView mExampleText;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_example);
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mExampleText = (TextView) findViewById(R.id.example_text);
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RxLoader<String> loader = new RxLoader<>(this, getObservable());
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RxLoaderCallbacks<String> callbacks = new RxLoaderCallbacks<>(loader);
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callbacks.getObservable().subscribe(this);
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getLoaderManager().initLoader(1, Bundle.EMPTY, callbacks);
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}
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@Override
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protected void onDestroy() {
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unsubscribe();
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super.onDestroy();
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}
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@Override
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public void onSubscribe(Disposable disposable) {
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unsubscribe();
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mDisposable = disposable;
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}
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@Override
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public void onNext(String value) {
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mExampleText.append(value + "\n");
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}
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@Override
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public void onError(Throwable e) {
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mExampleText.setText(e.getMessage());
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}
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@Override
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public void onComplete() {
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findViewById(R.id.progress).setVisibility(View.GONE);
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}
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private Observable<String> getObservable() {
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return Observable.interval(500, TimeUnit.MILLISECONDS)
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.takeWhile(new Predicate<Long>() {
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@Override
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public boolean test(Long tick) throws Exception {
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return tick < sVersionNames.length;
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}
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})
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.map(new Function<Long, String>() {
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@Override
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public String apply(Long tick) throws Exception {
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return sVersionNames[tick.intValue()];
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}
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});
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}
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private void unsubscribe() {
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if (mDisposable != null && !mDisposable.isDisposed()) {
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mDisposable.dispose();
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mDisposable = null;
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}
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}
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}

‎example/src/main/res/layout/activity_example.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<!--
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~ Copyright 2016 L4 Digital LLC. All rights reserved.
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~
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~ Licensed under the Apache License, Version 2.0 (the "License");
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~ you may not use this file except in compliance with the License.
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~ You may obtain a copy of the License at
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~
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~ http://www.apache.org/licenses/LICENSE-2.0
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~
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~ Unless required by applicable law or agreed to in writing, software
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~ distributed under the License is distributed on an "AS IS" BASIS,
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~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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~ See the License for the specific language governing permissions and
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~ limitations under the License.
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-->
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<FrameLayout
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xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools"
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android:id="@+id/activity_example"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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tools:context=".ExampleActivity">
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<android.support.v7.widget.AppCompatTextView
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android:id="@+id/example_text"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:padding="8dp"
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android:textSize="18sp"
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android:textStyle="bold"
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tools:text="John Doe" />
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<ProgressBar
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android:id="@+id/progress"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_gravity="center" />
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</FrameLayout>

‎example/src/main/res/mipmap-hdpi/ic_launcher.png‎

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‎example/src/main/res/mipmap-mdpi/ic_launcher.png‎

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‎example/src/main/res/mipmap-xhdpi/ic_launcher.png‎

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‎example/src/main/res/mipmap-xxhdpi/ic_launcher.png‎

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