updated dependencies

app/build.gradle

@@ -1,29 +1,56 @@
 apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion "23.0.1"
+    compileSdkVersion 29
+    buildToolsVersion "29.0.2"
 
     defaultConfig {
-        applicationId "kurtis.rx.androidexamples"
-        minSdkVersion 21
-        targetSdkVersion 23
+        applicationId "com.neeraj.myapplication"
+        minSdkVersion 19
+        targetSdkVersion 29
         versionCode 1
         versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
+
     buildTypes {
         release {
             minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
+
+// To inline the bytecode built with JVM target 1.8 into
+// bytecode that is being built with JVM target 1.6. (e.g. navArgs)
+
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:23.1.1'
-    compile 'com.android.support:recyclerview-v7:23.1.1'
-    compile 'io.reactivex:rxandroid:1.1.0'
-    compile 'io.reactivex:rxjava:1.1.0'
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation 'io.reactivex:rxandroid:1.1.0'
+    implementation 'io.reactivex:rxjava:1.1.0'
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'androidx.core:core-ktx:1.2.0'
+    implementation 'com.google.android.material:material:1.1.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'androidx.navigation:navigation-fragment-ktx:2.2.2'
+    implementation 'androidx.navigation:navigation-ui-ktx:2.2.2'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
 }
+

app/src/main/AndroidManifest.xml

@@ -10,12 +10,19 @@
         android:supportsRtl="true"
         android:theme="@style/AppTheme"
         >
+        <activity android:name=".MainActivity">
+        <intent-filter>
+                 <action android:name="android.intent.action.MAIN"/>
+
+                 <category android:name="android.intent.category.LAUNCHER"/>
+             </intent-filter>
+        </activity>
         <activity android:name=".ExampleListActivity">
-            <intent-filter>
+           <!-- <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
 
                 <category android:name="android.intent.category.LAUNCHER"/>
-            </intent-filter>
+            </intent-filter>-->
         </activity>
 
         <activity
@@ -26,27 +33,54 @@
          <activity
             android:name=".Example2Activity"
             android:parentActivityName=".ExampleListActivity"
-            />
+            >
+             <!--<intent-filter>
+                 <action android:name="android.intent.action.MAIN"/>
+
+                 <category android:name="android.intent.category.LAUNCHER"/>
+             </intent-filter>-->
+         </activity>
+
 
         <activity
             android:name=".Example3Activity"
-            android:parentActivityName=".ExampleListActivity"
-            />
+
+            >
+            <!--<intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>-->
+        </activity>
 
         <activity
             android:name=".Example4Activity"
-            android:parentActivityName=".ExampleListActivity"
-            />
+
+            >
+           <!-- <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>-->
+        </activity>
 
         <activity
             android:name=".Example5Activity"
-            android:parentActivityName=".ExampleListActivity"
-            />
+
+            >
+        <!--<intent-filter>
+            <action android:name="android.intent.action.MAIN"/>
+
+            <category android:name="android.intent.category.LAUNCHER"/>
+        </intent-filter>-->
+        </activity>
 
         <activity
             android:name=".Example6Activity"
-            android:parentActivityName=".ExampleListActivity"
-            />
+
+            >
+
+        </activity>
     </application>
 
 </manifest>

app/src/main/java/kurtis/rx/androidexamples/Example1Activity.java

@@ -1,16 +1,20 @@
 package kurtis.rx.androidexamples;
 
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
+
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 
 import java.util.ArrayList;
 import java.util.List;
 
 import rx.Observable;
 import rx.Observer;
 
+
+
 public class Example1Activity extends AppCompatActivity {
 
     RecyclerView mColorListView;

app/src/main/java/kurtis/rx/androidexamples/Example2Activity.java

@@ -1,9 +1,10 @@
 package kurtis.rx.androidexamples;
 
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.View;
 import android.widget.ProgressBar;
 

app/src/main/java/kurtis/rx/androidexamples/Example3Activity.java

@@ -1,9 +1,9 @@
 package kurtis.rx.androidexamples;
 
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.View;
 import android.widget.ProgressBar;
 import android.widget.TextView;
@@ -43,7 +43,8 @@ public List<String> call() throws Exception {
                  *
                  * return RestClient.getFavoriteTvShowsWithException();
                  */
-                return mRestClient.getFavoriteTvShows();
+                //return mRestClient.getFavoriteTvShows();
+                return RestClient.getFavoriteTvShowsWithException();
             }
         });
 

app/src/main/java/kurtis/rx/androidexamples/Example4Activity.java

@@ -1,8 +1,9 @@
 package kurtis.rx.androidexamples;
 
 import android.os.Bundle;
-import android.support.annotation.Nullable;
-import android.support.v7.app.AppCompatActivity;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.View;
 import android.widget.Button;
 import android.widget.TextView;
@@ -34,11 +35,14 @@ public void onCompleted() {
 
             @Override
             public void onError(Throwable e) {
-
+                e.printStackTrace();
             }
 
             @Override
             public void onNext(Integer integer) {
+                if(integer == 3) { //error produce
+                    int t = 5 / 0;
+                }
                   mCounterDisplay.setText(String.valueOf(integer));
             }
         });

app/src/main/java/kurtis/rx/androidexamples/Example5Activity.java

@@ -1,7 +1,8 @@
 package kurtis.rx.androidexamples;
 
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
+import androidx.appcompat.app.AppCompatActivity;
+
 import android.widget.TextView;
 
 import rx.Single;
@@ -25,7 +26,7 @@ public String call(Integer integer) {
         }).subscribe(new SingleSubscriber<String>() {
             @Override
             public void onSuccess(String value) {
-                  mValueDisplay.setText(value);
+                  mValueDisplay.setText(value+ "test");
             }
 
             @Override

app/src/main/java/kurtis/rx/androidexamples/Example6Activity.java

@@ -1,9 +1,9 @@
 package kurtis.rx.androidexamples;
 
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 import android.text.Editable;
 import android.text.TextWatcher;
 import android.view.View;

app/src/main/java/kurtis/rx/androidexamples/ExampleAdapter.java

@@ -2,7 +2,9 @@
 
 import android.content.Context;
 import android.content.Intent;
-import android.support.v7.widget.RecyclerView;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;

app/src/main/java/kurtis/rx/androidexamples/ExampleListActivity.java

@@ -1,10 +1,11 @@
 package kurtis.rx.androidexamples;
 
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AppCompatActivity;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 import android.os.Bundle;
-import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
+
 
 import java.util.ArrayList;
 import java.util.List;

app/src/main/java/kurtis/rx/androidexamples/MainActivity.java

@@ -0,0 +1,78 @@
+package kurtis.rx.androidexamples;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import androidx.appcompat.app.AppCompatActivity;
+import java.util.ArrayList;
+import java.util.List;
+
+
+
+public class MainActivity extends AppCompatActivity implements View.OnClickListener {
+
+    private Button firstButton;
+    private Button button2;
+    private Button firstButton3;
+    private Button firstButton4;
+    private Button firstButton5;
+    private Button firstButton6;
+
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        configureLayout();
+    }
+
+    private void configureLayout() {
+        setContentView(R.layout.main_activity2);
+        firstButton = (Button) findViewById(R.id.button1);
+        firstButton.setOnClickListener(this);
+        button2 = (Button) findViewById(R.id.button2);
+        button2.setOnClickListener(this);
+        firstButton3 = (Button) findViewById(R.id.button3);
+        firstButton3.setOnClickListener(this);
+        firstButton4 = (Button) findViewById(R.id.button4);
+        firstButton4.setOnClickListener(this);
+        firstButton5 = (Button) findViewById(R.id.button5);
+        firstButton5.setOnClickListener(this);
+        firstButton6 = (Button) findViewById(R.id.button6);
+        firstButton6.setOnClickListener(this);
+    }
+
+    private static List<String> getColorList() {
+        ArrayList<String> colors = new ArrayList<>();
+        colors.add("blue");
+        colors.add("green");
+        colors.add("red");
+        colors.add("chartreuse");
+        colors.add("Van Dyke Brown");
+        return colors;
+    }
+
+    @Override
+    public void onClick(View view) {
+        if (view == firstButton){
+            startActivity(new Intent(this,Example1Activity.class));
+        }
+        if (view == button2){
+            startActivity(new Intent(this,Example2Activity.class));
+        }
+        if (view == firstButton3){
+            startActivity(new Intent(this,Example3Activity.class));
+        }
+        if (view == firstButton4){
+            startActivity(new Intent(this,Example4Activity.class));
+        }
+        if (view == firstButton5){
+            startActivity(new Intent(this,Example5Activity.class));
+        }
+        if (view == firstButton6){
+            startActivity(new Intent(this,Example6Activity.class));
+        }
+    }
+
+
+}

app/src/main/java/kurtis/rx/androidexamples/RestClient.java

@@ -25,7 +25,7 @@ public List<String> getFavoriteTvShows() {
         return createTvShowList();
     }
 
-    public List<String> getFavoriteTvShowsWithException() {
+    public static List<String> getFavoriteTvShowsWithException() {
         try {
             // "Simulate" the delay of network.
             Thread.sleep(5000);