Initial commit

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties

AppUpdater/.gitignore

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+/build

AppUpdater/build.gradle

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+plugins {
+    id 'com.android.library'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        minSdkVersion 21
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        consumerProguardFiles "consumer-rules.pro"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'com.google.android.material:material:1.4.0'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}

AppUpdater/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

AppUpdater/src/androidTest/java/com/lib/appUpdater/ExampleInstrumentedTest.java

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+package com.lib.appUpdater;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.lib.appUpdater.test", appContext.getPackageName());
+    }
+}

AppUpdater/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.lib.appUpdater">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+
+    <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
+
+</manifest>

AppUpdater/src/main/java/com/lib/appUpdater/AppUpdater.java

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+package com.lib.appUpdater;
+
+import android.app.ProgressDialog;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.AsyncTask;
+import android.os.Build;
+import android.os.Environment;
+import android.os.Handler;
+import android.util.Log;
+import android.webkit.URLUtil;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.content.FileProvider;
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.URL;
+import java.net.URLConnection;
+import java.util.Objects;
+
+
+public class AppUpdater extends AppCompatActivity {
+
+    Context context;
+
+    public AppUpdater(Context context) {
+        this.context = context;
+    }
+
+    public void updateAppWithUrl(String url, String fileName){
+
+        if(URLUtil.isValidUrl(url)){
+            new DownloadUpdatedVersion().execute(url, fileName);
+        }
+    }
+
+    private class DownloadUpdatedVersion extends AsyncTask<String, Integer, Boolean> {
+
+
+        ProgressDialog progressDialog;
+
+        @Override
+        protected void onPreExecute() {
+            super.onPreExecute();
+            progressDialog = new ProgressDialog(context);
+            progressDialog.setCancelable(false);
+            progressDialog.setMessage("Updating...");
+
+            progressDialog.setCanceledOnTouchOutside(false);
+            progressDialog.show();
+
+        }
+
+        @Override
+        protected Boolean doInBackground(String... values) {
+            String downloadUrl = values[0];
+            String fileName = values[1];
+            Boolean flag = false;
+            int count;
+
+
+                String path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).toString() + "/";
+                File outputFile = new File(path+""+fileName);
+
+                while (outputFile.exists()) {
+                    boolean deleted = outputFile.delete();
+
+                }
+
+                File directory = new File(path);
+                if (!directory.exists()) {
+                    directory.mkdirs();
+                }
+
+                try {
+                    URL url = new URL(downloadUrl);
+                    URLConnection connection = url.openConnection();
+                    connection.connect();
+
+                    Integer totalSize = connection.getContentLength();
+
+                    InputStream input = new BufferedInputStream(url.openStream());
+
+                    OutputStream output = new FileOutputStream(outputFile);
+
+                    byte data[] = new byte[1024];
+
+                    long total = 0;
+
+                    while ((count = input.read(data)) != -1) {
+                        total += count;
+
+                        publishProgress(Integer.valueOf("" + (int) ((total * 100) / totalSize)));
+
+                        output.write(data, 0, count);
+                    }
+
+                    output.flush();
+
+                    output.close();
+                    input.close();
+                    openNewVersion(outputFile.getPath());
+                    flag = true;
+                } catch (Exception e) {
+                    Log.e("Error: ", e.getMessage());
+                    flag = false;
+                }
+
+
+
+            return flag;
+        }
+
+        private void openNewVersion(String path) {
+            Intent intent = new Intent(Intent.ACTION_VIEW);
+            intent.setDataAndType(
+                    getUriFromFile(path),
+                    "application/vnd.android.package-archive"
+            );
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+            context.startActivity(intent);
+        }
+
+        private Uri getUriFromFile(String path) {
+            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
+                return Uri.fromFile(new File(path));
+            } else {
+
+                return FileProvider.getUriForFile(
+                        context,
+                        context.getPackageName() + ".provider",
+                        new File(path)
+                );
+            }
+        }
+
+        protected void onProgressUpdate(Integer... progress) {
+
+            String msg = "";
+            Integer updatedProgress = progress[0];
+            if (updatedProgress != null) {
+                progressDialog.setProgress(updatedProgress);
+                if (updatedProgress > 99){
+                    msg = "Finishing... ";
+                } else{
+                    msg = "Downloading... "+updatedProgress;
+                }
+            }
+
+            progressDialog.setMessage(msg);
+
+            progressDialog.setProgress(progress[0]);
+        }
+
+
+        @Override
+        protected void onPostExecute(Boolean result) {
+
+            progressDialog.dismiss();
+            if (result != null && result) {
+                Toast.makeText(context, "Please install the updated application.", Toast.LENGTH_SHORT).show();
+            } else {
+                Toast.makeText(context, "Please try again later", Toast.LENGTH_SHORT).show();
+            }
+        }
+
+
+    }
+
+
+}