feat: add offline screen

Author: brunomartins84

app/build.gradle

@@ -10,8 +10,8 @@ android {
         applicationId "com.undershows.app"
         minSdk 26
         targetSdk 35
-        versionCode 1
-        versionName "1.0"
+        versionCode 2
+        versionName "1.0.0"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }

app/release/app-release.aab

@@ -3,6 +3,7 @@
     xmlns:tools="http://schemas.android.com/tools">
 
     <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 
     <application
         android:allowBackup="true"
@@ -14,16 +15,21 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.Undershows"
         tools:targetApi="31">
+
         <activity
             android:name=".MainActivity"
             android:exported="true"
             android:screenOrientation="portrait">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+
+        <activity
+            android:name=".NoInternetActivity"
+            android:exported="true"
+            android:screenOrientation="portrait" />
     </application>
 
 </manifest>

app/release/undershows_1_0_0.aab

@@ -1,10 +1,15 @@
 package com.undershows.app;
 
+import com.undershows.app.NoInternetActivity;
 import android.os.Bundle;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
 import android.content.Intent;
 import android.net.Uri;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
+import android.content.Context;
+import android.widget.Toast;
 import androidx.appcompat.app.AppCompatActivity;
 
 public class MainActivity extends AppCompatActivity {
@@ -18,6 +23,7 @@ protected void onCreate(Bundle savedInstanceState) {
         webView = findViewById(R.id.webview);
         webView.getSettings().setJavaScriptEnabled(true);
         webView.getSettings().setUserAgentString("Mozilla/5.0 (Linux; Android 10; Mobile) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Mobile Safari/537.36");
+
         webView.setWebViewClient(new WebViewClient() {
             @Override
             public boolean shouldOverrideUrlLoading(WebView view, String url) {
@@ -29,7 +35,20 @@ public boolean shouldOverrideUrlLoading(WebView view, String url) {
                 return false;
             }
         });
-        webView.loadUrl("https://shows.undershows.com.br");
+
+        if (isConnected()) {
+            webView.loadUrl("https://shows.undershows.com.br");
+        } else {
+            Intent intent = new Intent(this, NoInternetActivity.class);
+            startActivity(intent);
+            finish();
+        }
+    }
+
+    private boolean isConnected() {
+        ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
+        NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
+        return (networkInfo != null && networkInfo.isConnected());
     }
 
     @Override

app/src/main/AndroidManifest.xml

@@ -0,0 +1,12 @@
+package com.undershows.app;
+
+import android.os.Bundle;
+import androidx.appcompat.app.AppCompatActivity;
+
+public class NoInternetActivity extends AppCompatActivity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_no_internet);
+    }
+}

app/src/main/java/com/undershows/app/MainActivity.java

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <WebView
+        android:id="@+id/webview"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+</RelativeLayout>

app/src/main/java/com/undershows/app/NoInternetActivity.java

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#000000"
+    android:orientation="vertical"
+    android:gravity="center"
+    android:padding="24dp">
+
+    <LinearLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:background="#121212"
+        android:padding="24dp"
+        android:gravity="center"
+        android:layout_margin="16dp"
+        android:elevation="6dp"
+        android:layout_gravity="center"
+        android:backgroundTint="#1E1E1E"
+        android:clipToOutline="true">
+
+        <ImageView
+            android:id="@+id/logo_offline"
+            android:layout_width="150dp"
+            android:layout_height="150dp"
+            android:layout_marginBottom="16dp"
+            android:src="@mipmap/ic_launcher" />
+
+        <TextView
+            android:id="@+id/text_offline"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Sem internet!\nConecte seu Wi-Fi ou 3G/4G/5G para usar o app.\nDepois, feche e reabra o app."
+            android:textColor="#FFFFFF"
+            android:textSize="16sp"
+            android:textAlignment="center" />
+    </LinearLayout>
+
+</LinearLayout>
+