From b6138129e668681d2c16146dea3d66b0ea2f0381 Mon Sep 17 00:00:00 2001
From: faketruth <faketruth@0a769ca7-a7f5-676a-18bf-c427514a06d6>
Date: Sat, 18 Aug 2012 21:00:51 +0000
Subject: [PATCH] Android: I'm probably using a lot of bad practices, but the
 app looks somewhat better now and polls the server status Android: Put quite
 some testing code in ToJava.h and app-android.cpp ... I still can't send log
 messages to Java. The issue is threads, I can't use JNI stuff from threads
 that were not created by Java (at least not easily)

git-svn-id: http://mc-server.googlecode.com/svn/trunk@752 0a769ca7-a7f5-676a-18bf-c427514a06d6
---
 gen/com/mcserver/R.java                |  10 ++
 jni/ToJava.h                           |  26 +++--
 jni/app-android.cpp                    |  59 +++++++++-
 res/layout/main.xml                    |  36 +++++-
 res/values/strings.xml                 |   7 +-
 src/com/mcserver/MCServerActivity.java | 155 +++++++++++++++++++++++--
 6 files changed, 271 insertions(+), 22 deletions(-)

diff --git a/gen/com/mcserver/R.java b/gen/com/mcserver/R.java
index cd1049662..ea4f4fc2a 100644
--- a/gen/com/mcserver/R.java
+++ b/gen/com/mcserver/R.java
@@ -14,7 +14,12 @@ public final class R {
         public static final int ic_launcher=0x7f020000;
     }
     public static final class id {
+        public static final int ip_address=0x7f050005;
+        public static final int server_status_text=0x7f050004;
+        public static final int start_server=0x7f050002;
+        public static final int stop_server=0x7f050003;
         public static final int textView1=0x7f050000;
+        public static final int textView2=0x7f050001;
     }
     public static final class layout {
         public static final int main=0x7f030000;
@@ -22,5 +27,10 @@ public final class R {
     public static final class string {
         public static final int app_name=0x7f040001;
         public static final int hello=0x7f040000;
+        public static final int mcserver_is_not_running=0x7f040005;
+        public static final int mcserver_is_running=0x7f040004;
+        public static final int start=0x7f040002;
+        public static final int stop=0x7f040003;
+        public static final int your_ip=0x7f040006;
     }
 }
diff --git a/jni/ToJava.h b/jni/ToJava.h
index 59dc4c366..bc10f01e3 100644
--- a/jni/ToJava.h
+++ b/jni/ToJava.h
@@ -3,7 +3,7 @@
 #include <jni.h>
 #include <android/log.h>
 extern JNIEnv* g_CurrentJNIEnv;
-
+extern JavaVM* g_JavaVM;
 extern jobject g_JavaThread;
 //extern jobject g_JavaActivity;
 
@@ -11,6 +11,12 @@ extern jobject g_JavaThread;
 
 static void CallJavaFunction_Void_String( jobject a_Object, const std::string & a_FunctionName, const std::string & a_StringParam )
 {
+	JNIEnv * oldEnv = g_CurrentJNIEnv;
+	int status = g_JavaVM->AttachCurrentThread(&g_CurrentJNIEnv, NULL);
+	__android_log_print(ANDROID_LOG_ERROR,"MCServer", "STATUS: %i old: %p new: %p", status, oldEnv, g_CurrentJNIEnv );
+	jstring str = g_CurrentJNIEnv->NewStringUTF( a_StringParam.c_str() );
+
+
 	//__android_log_print(ANDROID_LOG_ERROR,"MCServer", "JNIEnv: %i Object: %i", g_CurrentJNIEnv, a_Object );
 	jclass cls = g_CurrentJNIEnv->GetObjectClass( a_Object );
 	//__android_log_print(ANDROID_LOG_ERROR,"MCServer", "jclass: %i", cls );
@@ -18,26 +24,32 @@ static void CallJavaFunction_Void_String( jobject a_Object, const std::string &
 	//__android_log_print(ANDROID_LOG_ERROR,"MCServer", "jmethodID: %i", mid );
 	if (mid != 0)
 	{
-		//__android_log_print(ANDROID_LOG_ERROR,"MCServer", "Going to call right NOW! %s", a_FunctionName.c_str() );
-		g_CurrentJNIEnv->CallVoidMethod( a_Object, mid, g_CurrentJNIEnv->NewStringUTF( a_StringParam.c_str() ) );
+		
+		__android_log_print(ANDROID_LOG_ERROR,"MCServer", "Going to call right NOW! %s", a_FunctionName.c_str() );
+		g_CurrentJNIEnv->CallVoidMethod( a_Object, mid, str );
 	}
 	else
 	{
 		__android_log_print(ANDROID_LOG_ERROR,"MCServer", "It was 0, derp" );
 	}
+
+	if( oldEnv != g_CurrentJNIEnv )
+	{
+		g_JavaVM->DetachCurrentThread();
+	}
 }
 
 
 static void CallJavaFunction_Void_Void( jobject a_Object, const std::string & a_FunctionName )
 {
-	__android_log_print(ANDROID_LOG_ERROR,"MCServer", "JNIEnv: %i Object: %i", g_CurrentJNIEnv, a_Object );
+	//__android_log_print(ANDROID_LOG_ERROR,"MCServer", "JNIEnv: %i Object: %i", g_CurrentJNIEnv, a_Object );
 	jclass cls = g_CurrentJNIEnv->GetObjectClass( a_Object );
-	__android_log_print(ANDROID_LOG_ERROR,"MCServer", "jclass: %i", cls );
+	//__android_log_print(ANDROID_LOG_ERROR,"MCServer", "jclass: %i", cls );
 	jmethodID mid = g_CurrentJNIEnv->GetMethodID( cls, a_FunctionName.c_str(), "()V"); // void a_FunctionName( String )
-	__android_log_print(ANDROID_LOG_ERROR,"MCServer", "jmethodID: %i", mid );
+	//__android_log_print(ANDROID_LOG_ERROR,"MCServer", "jmethodID: %i", mid );
 	if (mid != 0)
 	{
-		__android_log_print(ANDROID_LOG_ERROR,"MCServer", "Going to call right NOW! %s", a_FunctionName.c_str() );
+		//__android_log_print(ANDROID_LOG_ERROR,"MCServer", "Going to call right NOW! %s", a_FunctionName.c_str() );
 		g_CurrentJNIEnv->CallVoidMethod( a_Object, mid );
 	}
 	else
diff --git a/jni/app-android.cpp b/jni/app-android.cpp
index 461f433bf..a6fb1baf2 100644
--- a/jni/app-android.cpp
+++ b/jni/app-android.cpp
@@ -21,16 +21,52 @@ cCriticalSection g_CriticalSection;
 
 JNIEnv* g_CurrentJNIEnv = 0;
 jobject g_JavaThread = 0;
+JavaVM* g_JavaVM = 0;
 //jobject g_JavaActivity = 0;
 
 cRoot * pRoot = NULL;
 
 
+class cMainThread :
+	public cIsThread
+{
+public:
+	cMainThread() :
+	  cIsThread("cMainThread")
+	  {
+		  //Start();
+		  __android_log_print(ANDROID_LOG_ERROR,"MCServer", "%s", "cMainThread");
+	  }
 
+	  void Stop(void)
+	  {
+		  m_ShouldTerminate = true;
+		  Wait();
+	  }
 
+protected:
+
+	virtual void Execute(void) override
+	{
+		__android_log_print(ANDROID_LOG_ERROR,"MCServer", "%s", "Execute");
+		pRoot = new cRoot();
+		pRoot->Start();
+		delete pRoot;
+	}
+
+} ;
+
+cMainThread * pMainThread = NULL;
+
+jint JNI_OnLoad(JavaVM* vm, void* reserved)
+{
+	__android_log_print(ANDROID_LOG_ERROR,"MCServer", "%s", "JNI_OnLoad JNI_OnLoad JNI_OnLoad JNI_OnLoad");
+	g_JavaVM = vm;
+	return JNI_VERSION_1_4;
+}
 
 /* Called when program/activity is created */
-extern "C" void Java_com_mcserver_MainThread_NativeOnCreate( JNIEnv*  env, jobject  thiz )
+extern "C" void Java_com_mcserver_MCServerActivity_NativeOnCreate( JNIEnv*  env, jobject thiz )
 {
 	g_CriticalSection.Lock();
 	g_CurrentJNIEnv = env;
@@ -44,25 +80,40 @@ extern "C" void Java_com_mcserver_MainThread_NativeOnCreate( JNIEnv*  env, jobje
 	
 	mkdir("/sdcard/mcserver", S_IRWXU | S_IRWXG | S_IRWXO);
 
+// 	__android_log_print(ANDROID_LOG_ERROR,"MCServer", "%s", "Before mainthread");
+// 	pMainThread = new cMainThread();
+// 	pMainThread->Start();
+// 	__android_log_print(ANDROID_LOG_ERROR,"MCServer", "%s", "AFter mainthread");
+
 	pRoot = new cRoot();
 	pRoot->Start();
-	delete pRoot;
+	delete pRoot; pRoot = NULL;
 }
 
 
 
 
 
-extern "C" void Java_com_mcserver_MainThread_NativeCleanUp( JNIEnv*  env, jobject  thiz )
+extern "C" void Java_com_mcserver_MCServerActivity_NativeCleanUp( JNIEnv*  env, jobject thiz )
 {
 	g_CriticalSection.Lock();
 	g_CurrentJNIEnv = env;
 	g_JavaThread = thiz;
 	g_CriticalSection.Unlock();
 
-	pRoot->ServerCommand("stop");
+	__android_log_print(ANDROID_LOG_ERROR,"MCServer", "pRoot: %p", pRoot);
+	if( pRoot != NULL )
+	{
+		pRoot->ServerCommand("stop");
+	}
+// 	pMainThread->Stop();
+// 	delete pMainThread; pMainThread = NULL;
 }
 
 
 
 
+extern "C" jboolean Java_com_mcserver_MCServerActivity_NativeIsServerRunning( JNIEnv* env, jobject thiz )
+{
+	return pRoot != NULL;
+}
\ No newline at end of file
diff --git a/res/layout/main.xml b/res/layout/main.xml
index e24cd5f23..b270bca03 100644
--- a/res/layout/main.xml
+++ b/res/layout/main.xml
@@ -2,12 +2,46 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"
+    android:gravity="center_horizontal"
     android:orientation="vertical" >
-

+
     <TextView
         android:id="@+id/textView1"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:text="@string/hello" />
 
+    <TextView
+        android:id="@+id/textView2"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/app_name"
+        android:textAppearance="?android:attr/textAppearanceLarge" />
+



+    <Button
+        android:id="@+id/start_server"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/start" />
+





+    <Button
+        android:id="@+id/stop_server"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:enabled="true"
+        android:text="@string/stop" />
+


+    <TextView
+        android:id="@+id/server_status_text"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/mcserver_is_not_running"
+        android:textAppearance="?android:attr/textAppearanceMedium" />
+


+    <TextView
+        android:id="@+id/ip_address"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/your_ip" />
+
 </LinearLayout>
\ No newline at end of file
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 8c782a739..9fce753a4 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -2,6 +2,11 @@
 <resources>
 
     <string name="hello">Hello World, MCServerActivity!</string>
-    <string name="app_name">MCServer</string>
+    <string name="app_name">MCServer</string>
+    <string name="start">Start</string>
+    <string name="stop">Stop</string>
+    <string name="mcserver_is_running">MCServer is running</string>
+    <string name="mcserver_is_not_running">MCServer is not running</string>
+    <string name="your_ip">Your IP …</string>
 
 </resources>
\ No newline at end of file
diff --git a/src/com/mcserver/MCServerActivity.java b/src/com/mcserver/MCServerActivity.java
index ff1a4fae2..f9bb363f4 100644
--- a/src/com/mcserver/MCServerActivity.java
+++ b/src/com/mcserver/MCServerActivity.java
@@ -1,12 +1,22 @@
 package com.mcserver;
 
+import java.net.InetAddress;
+import java.net.NetworkInterface;
+import java.net.SocketException;
+import java.util.Enumeration;
+
 import android.app.Activity;
+import android.graphics.Color;
 import android.os.Bundle;
 import android.util.Log;
 import android.view.KeyEvent;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
 
 public class MCServerActivity extends Activity {
 	MainThread mThread = null;
+	Thread ServerStatusThread = null;
 	
     /** Called when the activity is first created. */
     @Override
@@ -14,51 +24,178 @@ public class MCServerActivity extends Activity {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
         
-        mThread = new MainThread();
-        mThread.start();
+        ((Button)findViewById(R.id.start_server)).setOnClickListener( new View.OnClickListener() {
+			public void onClick(View v) {
+				if( mThread == null || mThread.isAlive() == false ) {
+					mThread = new MainThread( (MCServerActivity)v.getContext() );
+					mThread.start();
+				}
+			}
+		});
+        
+        ((Button)findViewById(R.id.stop_server)).setOnClickListener( new View.OnClickListener() {
+			public void onClick(View v) {
+				NativeCleanUp();
+			}
+		});
+        
+
+        
+        ServerStatusThread = new Thread( new Runnable() {
+			public void run() {
+				for(;;)
+				{
+					try {
+				        runOnUiThread( new Runnable() {
+							public void run() {
+								UpdateServerStatus();
+							}
+				        });
+				        Thread.sleep(1000);
+					} catch (InterruptedException e) {
+					}
+				}
+			}
+        });
+        ServerStatusThread.start();
+        
+        
+        
+        
+        ((TextView)findViewById(R.id.ip_address)).setText("Connect to: " + getLocalIpAddress());
     }
     
+    
+    
+    public String getLocalIpAddress() {
+        try {
+            for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
+                NetworkInterface intf = en.nextElement();
+                for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
+                    InetAddress inetAddress = enumIpAddr.nextElement();
+                    if (!inetAddress.isLoopbackAddress()) {
+                        return inetAddress.getHostAddress().toString();
+                    }
+                }
+            }
+        } catch (SocketException ex) {
+            Log.e("MCServer", ex.toString());
+        }
+        return null;
+    }
+    
+    
+    
+    public void UpdateServerStatus()
+    {
+		if( NativeIsServerRunning() ) {
+			((TextView)findViewById(R.id.server_status_text)).setText(R.string.mcserver_is_running);
+			((TextView)findViewById(R.id.server_status_text)).setTextColor(Color.GREEN);
+			((Button)findViewById(R.id.stop_server)).setEnabled(true);
+			((Button)findViewById(R.id.start_server)).setEnabled(false);
+		} else {
+			((TextView)findViewById(R.id.server_status_text)).setText(R.string.mcserver_is_not_running);
+			((TextView)findViewById(R.id.server_status_text)).setTextColor(Color.RED);
+			((Button)findViewById(R.id.stop_server)).setEnabled(false);
+			((Button)findViewById(R.id.start_server)).setEnabled(true);
+		}
+    }
+    
+    
+    
+    
+    
     public boolean onKeyDown(int keyCode, KeyEvent event) { 
 	    if(keyCode==KeyEvent.KEYCODE_BACK) 
 	    { 
 		    //android.os.Process.killProcess(android.os.Process.myPid());
-	    	mThread.NativeCleanUp();
+	    	NativeCleanUp();
 		    return super.onKeyDown(keyCode, event); 
 	    } 
 	    return false; 
     }
     
+    
+    
+    
+    
     public void AddToLog( String logMessage ) {
     	
     }
     
+    
+    
+    
+    
+    public void SetText( final String aText ) {
+    	Log.d("MCServer", "in SetText " + aText);
+    	/*
+    	final MCServerActivity context = this;
+		this.runOnUiThread(new Runnable() 
+		{
+		    public void run() 
+		    {
+		    	((TextView)context.findViewById(R.id.textView1)).setText(aText);
+		    }
+		} );
+		*/
+    	final TextView tv = (TextView)this.findViewById(R.id.textView1);
+    	tv.post(new Runnable() {
+    		public void run() {
+    			tv.setText(aText);
+    		}
+    	});
+    }
+    
+    
+    
+    
+    
+    public void Testtt()
+    {
+    	//Log.d("MCServer", "in Testtt");
+    }
+    
+    
+    
+    
+    
     static {
         System.loadLibrary("mcserver");
     }
     
     
-    
+    public native void    NativeOnCreate();
+    public native void    NativeCleanUp();
+    public native boolean NativeIsServerRunning();
     
 }
 
 
 class MainThread extends Thread {
-    MainThread() {
+	MCServerActivity mContext = null;
+	int numlogs = 0;
+	
+    MainThread( MCServerActivity aContext ) {
+    	mContext = aContext;
     }
 
     public void AddToLog( String logMessage ) {
+    	mContext.SetText( logMessage );
     	//Log.d("MCServer", "Add to log: " + logMessage);
     }
     
     public void TestTest(){
-    	Log.d("MCServer", "in testtest");
+    	numlogs++;
+    	//Log.d("MCServer", "in testtest" + numlogs);
+    	mContext.Testtt();
+    	mContext.SetText("log no. " + numlogs);
     }
     
     public void run() {
-    	NativeOnCreate();
+    	mContext.NativeOnCreate();
     }
-    public native void NativeOnCreate();
-    public native void NativeCleanUp();
+
 }