Ilan :
I was trying to use ThreadHandler and Thread Communication in the process of using ObjectInputStream and ObjectOutputStream with a class I made called graphVariable which I have in a server that I made in java, eclipse, I think the problem is that they are not in the same package but I don't know how to make them in the same package, one in eclipse, java and one in android, I tried making a package called Objects and putting the graphVariable class in both the server and the client but it doesn't change a thing. This is the error:
08-13 14:14:56.949 17040-19174/com.example.ilan.arppcont W/System.err: java.lang.ClassNotFoundException: [LgraphVariable;
08-13 14:14:56.954 17040-19174/com.example.ilan.arppcont W/System.err: at java.lang.Class.classForName(Native Method)
08-13 14:14:56.955 17040-19174/com.example.ilan.arppcont W/System.err: at java.lang.Class.forName(Class.java:400)
at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:626)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1613)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1518)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1664)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1345)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:373)
at com.example.ilan.arppcont.MyThread.run(class_bitarb.java:35)
08-13 14:14:56.960 17040-19174/com.example.ilan.arppcont W/System.err: Caused by: java.lang.ClassNotFoundException: Didn't find class "graphVariable" on path: DexPathList[[zip file "/data/app/com.example.ilan.arppcont-1/base.apk"],nativeLibraryDirectories=[/data/app/com.example.ilan.arppcont-1/lib/arm64, /system/lib64, /vendor/lib64]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
... 9 more
This is the code for the client:
package com.example.ilan.arppcont;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Looper;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.RecyclerView;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import ServerComm.Graph;
import ServerComm.graphVariable;
class MyThread extends Thread {
boolean running = true;
HandlerThread myThread = new HandlerThread("hi");
Looper mLooper;
@Override
public void run(){
if(running) {
myThread.start();
mLooper = myThread.getLooper();
class_bitarb.MyHandler mHandler = new class_bitarb.MyHandler(mLooper);
try {
class_server.out.writeObject("update");
while (true) {
graphVariable[] input = (graphVariable[]) class_server.in.readObject();
if (input != null) {
class_bitarb.graph = input;
break;
}
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
class_graph.graph = Graph.start(class_bitarb.graph, class_graph.textView);
Message msg = Message.obtain();
msg.obj = false;
mHandler.sendMessage(msg);
}
};
public void setRunning(boolean running) {
this.running = running;
}
}
public class class_bitarb extends AppCompatActivity {
static MyThread mThread = new MyThread();
public static class MyHandler extends Handler {
public MyHandler(Looper myLooper) {
super(myLooper);
}
public void handleMessage(Message msg) {
mThread.setRunning(false);
}
}
static Button btn_update;
static RecyclerView list;
static graphVariable[] graph = null;
/**
* The {@link android.support.v4.view.PagerAdapter} that will provide
* fragments for each of the sections. We use a
* {@link FragmentPagerAdapter} derivative, which will keep every
* loaded fragment in memory. If this becomes too memory intensive, it
* may be best to switch to a
* {@link android.support.v4.app.FragmentStatePagerAdapter}.
*/
private SectionsPagerAdapter mSectionsPagerAdapter;
/**
* The {@link ViewPager} that will host the section contents.
*/
private ViewPager mViewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_client);
//Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
//setSupportActionBar(toolbar);
// Create the adapter that will return a fragment for each of the three
// primary sections of the activity.
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
//mViewPager = (ViewPager) findViewById(R.id.container);
//mViewPager.setAdapter(mSectionsPagerAdapter);
//TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
//mViewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
//tabLayout.addOnTabSelectedListener(new TabLayout.ViewPagerOnTabSelectedListener(mViewPager));
}
static String input = "";
public static void addListenerOnButton(View view) {
btn_update.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
mThread.start();
Looper mLooper = mThread.mLooper;
while(true){
if(mLooper!=null){
break;
}else{
mLooper = mThread.mLooper;
}
}
MyHandler mHandler = new MyHandler(mLooper);
}
});
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
private static final String ARG_SECTION_NUMBER = "section_number";
public PlaceholderFragment() {
}
/**
* Returns a new instance of this fragment for the given section
* number.
*/
public static PlaceholderFragment newInstance(int sectionNumber) {
PlaceholderFragment fragment = new PlaceholderFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_bitarb, container, false);
btn_update = (Button) rootView.findViewById(R.id.btn_update);
list = (RecyclerView) rootView.findViewById(R.id.list);
addListenerOnButton(rootView);
return rootView;
}
}
/**
* A {@link FragmentPagerAdapter} that returns a fragment corresponding to
* one of the sections/tabs/pages.
*/
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
// Return a PlaceholderFragment (defined as a static inner class below).
return PlaceholderFragment.newInstance(position + 1);
}
@Override
public int getCount() {
// Show 3 total pages.
return 1;
}
}
}
And here is the Class:
public class graphVariable implements Serializable{
private static final long serialVersionUID = 5830807339573412345L;
public double x1;
public double y1;
public double[] x;
public double[] y;
public APIs ef;
public APIs et;
public double ratio;
public graphVariable() {
x = new double[50];
y = new double[50];
ratio = 0;
ef= APIs.hi;
et= APIs.hi;
}
}
Also, I want to point it out that I have tried lots of stuff. Here is the build.gradle:
apply plugin: 'com.android.application'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.example.ilan.arppcontv2"
minSdkVersion 15
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:28.0.0-rc01'
implementation 'com.android.support:design:28.0.0-rc01'
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
implementation files('libs/GraphView-4.2.1.jar')
}
Yocttar :
Use JSON for all communications, it doesn't use serialization, should solve your problem.