Made to work in 2023 Android Studio and SDK 33

app/build.gradle

@@ -1,13 +1,13 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 21
-    buildToolsVersion "21.1.1"
+    compileSdk 33
+    buildToolsVersion '33.0.0'
 
     defaultConfig {
         applicationId "com.em.batterywidget"
-        minSdkVersion 8
-        targetSdkVersion 21
+        minSdk 29
+        targetSdk 33
         versionCode 1
         versionName "1.0"
     }
@@ -21,7 +21,7 @@ android {
 }
 
 dependencies {
-    testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:21.0.0'
-    compile files('libs/achartengine-1.0.0.jar')
+    implementation files('libs/achartengine-1.2.0.jar')
+    testImplementation 'junit:junit:4.13.2'
+    implementation 'androidx.appcompat:appcompat:1.6.0'
 }

app/src/main/AndroidManifest.xml

@@ -29,15 +29,17 @@
         android:theme="@style/AppTheme">
         <activity
             android:name=".WidgetActivity"
-            android:label="@string/app_name">
+            android:label="@string/app_name"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
 
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
 
-        <receiver android:name=".BatteryWidget">
+        <receiver android:name=".BatteryWidget"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>
             </intent-filter>
@@ -49,7 +51,8 @@
 
         <receiver
             android:name=".BootReceiver"
-            android:permission="android.permission.RECEIVE_BOOT_COMPLETED">
+            android:permission="android.permission.RECEIVE_BOOT_COMPLETED"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.BOOT_COMPLETED"/>
             </intent-filter>

app/src/main/java/com/em/batterywidget/UpdateService.java

@@ -130,7 +130,7 @@ private RemoteViews createRemoteViews(final int level, final boolean isCharging)
                 View.VISIBLE : View.INVISIBLE);
         remoteViews.setTextViewText(R.id.batterytext, String.valueOf(level) + "%");
         Intent activityIntent = new Intent(this, WidgetActivity.class);
-        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, activityIntent, 0);
+        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, activityIntent, PendingIntent.FLAG_IMMUTABLE );
         remoteViews.setOnClickPendingIntent(R.id.widget_view, pendingIntent);
         return remoteViews;
     }

build.gradle

@@ -1,15 +1,4 @@
-// Top-level build file where you can add configuration options common to all sub-projects/modules.
-buildscript {
-    repositories {
-        jcenter()
-    }
-    dependencies {
-        classpath 'com.android.tools.build:gradle:1.5.0'
-    }
-}
-
-allprojects {
-    repositories {
-        jcenter()
-    }
-}
+plugins {
+    id 'com.android.application' version '7.4.1' apply false
+    id 'com.android.library' version '7.4.1' apply false
+}

gradle.properties

@@ -0,0 +1,2 @@
+android.enableJetifier=true
+android.useAndroidX=true

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,7 @@
-#Wed Oct 21 11:34:03 PDT 2015
+#Mon Jan 30 11:56:18 GMT 2023
 distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
 distributionPath=wrapper/dists
-zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.8-all.zip
+zipStoreBase=GRADLE_USER_HOME
+

settings.gradle

@@ -1 +1,16 @@
+pluginManagement {
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+rootProject.name = "Android-Battery-Widget"
 include ':app'