From 8785107ea5e166cce3e0af95b801130fcc9b867d Mon Sep 17 00:00:00 2001
From: Alexander Mahr <info@alexmahr.de>
Date: Wed, 9 Oct 2024 15:50:27 +0200
Subject: [PATCH] timer , but not working with webview

---
 apk/AndroidManifest.xml                       | 21 ++++++++++--
 apk/Makefile                                  |  8 +++--
 apk/src/app/example/ExampleApp.java           | 13 ++++++-
 .../app/example/MyJavascriptInterface.java    | 34 +++++++++++++++++++
 apk/src/app/example/MyRunnable.java           | 30 ++++++++++++++++
 5 files changed, 99 insertions(+), 7 deletions(-)
 create mode 100644 apk/src/app/example/MyJavascriptInterface.java
 create mode 100644 apk/src/app/example/MyRunnable.java

diff --git a/apk/AndroidManifest.xml b/apk/AndroidManifest.xml
index 5f3d559..d9b61ec 100644
--- a/apk/AndroidManifest.xml
+++ b/apk/AndroidManifest.xml
@@ -5,9 +5,24 @@
       android:versionName="1.0">
     <uses-sdk android:minSdkVersion="30"
     android:targetSdkVersion="33"/>
-    <uses-permission android:name="android.permission.INTERNET">
-    </uses-permission>
-   <!-- android:maxSdkVersion="integer" /> -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.MANAGE_DOCUMENTS"/>
+    <uses-permission android:name="android.permission.MANAGE_MEDIA"/>
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
+    <uses-permission android:name="android.permission.READ_MEDIA_AUDIO"/>
+    <uses-permission android:name="android.permission.READ_MEDIA_IMAGES"/>
+    <uses-permission android:name="android.permission.READ_MEDIA_VIDEO"/>
+    <uses-permission android:name="android.permission.READ_MEDIA_VISUAL_USER_SELECTED"/>
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"  android:maxSdkVersion="32" />
+    <uses-permission android:name="android.permission.READ_SYNC_SETTINGS"/>
+    <uses-permission android:name="android.permission.VIBRATE"/>
+    <uses-permission android:name="android.permission.WAKE_LOCK"/>
+    <uses-permission android:name="android.permission.WRITE_CALENDAR"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.WRITE_MEDIA_STORAGE"/>
+    <uses-permission android:name="android.permission.WRITE_SETTINGS"/>
+    <uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS"/>
     <application android:label="@string/app_name" android:icon="@drawable/ic_launcher">
         <activity android:name="app.example.ExampleApp"
                   android:exported="true"
diff --git a/apk/Makefile b/apk/Makefile
index 4c0ca05..659548b 100644
--- a/apk/Makefile
+++ b/apk/Makefile
@@ -29,14 +29,16 @@ build : ./bin/example.app.apk
 	$(ANDROID_HOME)/build-tools/$(ANDROID_VERSION)/aapt package -v -u -f -M ./AndroidManifest.xml -S ./res \
 	-I $(ANDROID_HOME)/platforms/$(PLATFORM)/android.jar -F $@ ./bin
 		
-./bin/classes.dex : ./obj/app/example/ExampleApp.class
-	$(ANDROID_HOME)/build-tools/$(ANDROID_VERSION)/d8 $(shell find obj -name '*.class') --lib $(ANDROID_HOME)/platforms/$(PLATFORM)/android.jar --output bin
+#./bin/classes.dex : ./obj/app/example/ExampleApp.class ./obj/app/example/ExampleApp$$1.class ./obj/app/example/MyJavascriptInterface.class 
+#./bin/classes.dex : ./obj/app/example/ExampleApp.class ./obj/app/example/MyJavascriptInterface.class ./obj/app/example/MyRunnable.class
+./bin/classes.dex : ./obj/app/example/ExampleApp.class ./obj/app/example/MyJavascriptInterface.class ./obj/app/example/MyRunnable.class
+	$(ANDROID_HOME)/build-tools/$(ANDROID_VERSION)/d8 $^  --lib $(ANDROID_HOME)/platforms/$(PLATFORM)/android.jar --output bin
 	
 ./src/app/example/R.java : $(shell find ./res -type f)
 	$(ANDROID_HOME)/build-tools/$(ANDROID_VERSION)/aapt package -v -f -m  -S ./res -J ./src -M ./AndroidManifest.xml \
 	-I $(ANDROID_HOME)/platforms/$(PLATFORM)/android.jar
 
-./obj/app/example/ExampleApp.class : ./src/app/example/ExampleApp.java  ./src/app/example/R.java
+./obj/app/example/ExampleApp.class : ./src/app/example/ExampleApp.java  ./src/app/example/R.java ./src/app/example/MyJavascriptInterface.java
 	javac -d ./obj -classpath $(ANDROID_HOME)/platforms/$(PLATFORM)/android.jar -sourcepath ./src $<
 	
 ./ToyKey.keystore : 
diff --git a/apk/src/app/example/ExampleApp.java b/apk/src/app/example/ExampleApp.java
index 1f9632c..98dbba0 100644
--- a/apk/src/app/example/ExampleApp.java
+++ b/apk/src/app/example/ExampleApp.java
@@ -12,11 +12,13 @@ import android.webkit.WebView;
 import android.webkit.*;
 import android.view.ViewGroup.*;
 import android.util.Base64;
+//import java.util.Timer;
 
 public class ExampleApp extends Activity {
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        MyJavascriptInterface myJavaScriptInterface = new MyJavascriptInterface(this);
         // this removes the title bar (a ~1cm big strip at the top of the app showing its name
         this.requestWindowFeature(Window.FEATURE_NO_TITLE);
         // we create the webview (at least on the android 14 that is a webview that features avif + websockets etc....)
@@ -29,12 +31,21 @@ public class ExampleApp extends Activity {
         myWebSettings.setBuiltInZoomControls(true);
         myWebSettings.setDisplayZoomControls(false);
         myWebSettings.setJavaScriptEnabled(true);
+        myWebView.addJavascriptInterface(myJavaScriptInterface, "myJavaScriptInterface");
         // providing a webpage inline
-        String unencodedHtml = "<!DOCTYPE html><html><script> window.addEventListener('load',()=>{d=document.createElement('div');d.innerHTML='JAVASCRIPT works';document.body.appendChild(d);},false);</script><a href='https://html5test.co/'>https://html5test.co/</a><h1> this is html <h1> <h2> this is a h2</h2><img src='https://wald.alexmahr.de/images/rabe.avif'></html>";
+        String unencodedHtml = "<!DOCTYPE html><html><script> window.addEventListener('load',()=>{d=document.createElement('div');d.innerHTML=myJavaScriptInterface.toString()+'JAVASCRIPT works';document.body.appendChild(d);},false);</script><a href='https://html5test.co/'>https://html5test.co/</a><h1> this is html <h1> <h2> this is a h2</h2><img src='https://wald.alexmahr.de/images/rabe.avif'></html>";
         String encodedHtml = Base64.encodeToString(unencodedHtml.getBytes(),Base64.NO_PADDING);
         myWebView.loadData(encodedHtml, "text/html", "base64");
         // alternatively this could be to load a website
         //myWebView.loadUrl("https://alexmahr.de/ru");
         setContentView(myWebView);
+        new java.util.Timer().schedule( new MyRunnable(myWebView),2000);
+//        java.util.TimerTask() {
+//            @Override
+//            public void run() {
+//                myWebView.evaluateJavascript("document.body.innerHTML='all is lost';",null);
+//                // this code will be executed after 2 seconds
+//            }
+//        , 2000);
     }
 }
diff --git a/apk/src/app/example/MyJavascriptInterface.java b/apk/src/app/example/MyJavascriptInterface.java
new file mode 100644
index 0000000..b5c490b
--- /dev/null
+++ b/apk/src/app/example/MyJavascriptInterface.java
@@ -0,0 +1,34 @@
+package app.example;
+
+import android.util.Log;
+import android.widget.TextView;
+import android.app.Activity;
+import android.os.Bundle;
+import android.text.method.ScrollingMovementMethod;
+import android.view.MenuItem;
+import android.view.*;
+import android.widget.*;
+import android.webkit.WebView;
+import android.webkit.*;
+import android.view.ViewGroup.*;
+import android.util.Base64;
+import android.os.Environment;
+import java.io.*;
+//File all;
+
+public class MyJavascriptInterface {
+    private Activity activity;
+
+    public MyJavascriptInterface(Activity activity) {
+        this.activity = activity;
+    }
+
+   // @JavascriptInterface
+   // public void startVideo(String videoAddress){
+   //     Intent intent = new Intent(Intent.ACTION_VIEW);
+   //     intent.setDataAndType(Uri.parse(videoAddress), "video/3gpp");
+   //     activity.startActivity(intent);
+   // }
+    @JavascriptInterface
+    public String toString() { return "injectedObject"; }
+}
diff --git a/apk/src/app/example/MyRunnable.java b/apk/src/app/example/MyRunnable.java
new file mode 100644
index 0000000..498a545
--- /dev/null
+++ b/apk/src/app/example/MyRunnable.java
@@ -0,0 +1,30 @@
+
+package app.example;
+
+import android.util.Log;
+import android.widget.TextView;
+import android.app.Activity;
+import android.os.Bundle;
+import android.text.method.ScrollingMovementMethod;
+import android.view.MenuItem;
+import android.view.*;
+import android.widget.*;
+import android.webkit.WebView;
+import android.webkit.*;
+import android.view.ViewGroup.*;
+import android.util.Base64;
+import java.util.Timer;
+import java.util.TimerTask;
+
+public class MyRunnable extends TimerTask
+{
+    WebView InnerWebView;
+    public MyRunnable(WebView MyWebView){
+        InnerWebView=MyWebView;
+    }
+    public void run()
+    {
+        InnerWebView.evaluateJavascript("document.body.innerHTML='all is lost';",null);
+        System.out.println( "Now is " );
+    }
+}