Encrypted Bluetooth chat communication - android-studio

Question

Having issues with the app, shuts down any time I click on the chat button. I just submitted my manifest, gradle , xml, and the mainactivity to check what really went wrong. Thanks
I have an error from the logcat
GoldfishAddressSpaceHostMemoryAllocator: ioctl_ping failed for device_type=5, ret=-1.
2021-06-26 05:10:29.573 24952-24952/c.bawp.securemessenger D/AndroidRuntime: Shutting down VM
2021-06-26 05:10:29.587 24952-24952/c.bawp.securemessenger E/AndroidRuntime: FATAL EXCEPTION: main
Process: c.bawp.securemessenger, PID: 24952
android.content.ActivityNotFoundException: Unable to find explicit activity class {c.bawp.securemessenger/c.bawp.securemessenger.ChatController}; have you declared this activity in your AndroidManifest.xml?
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:2005)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1673)
at android.app.Activity.startActivityForResult(Activity.java:4586)
at androidx.activity.ComponentActivity.startActivityForResult(ComponentActivity.java:574)
at android.app.Activity.startActivityForResult(Activity.java:4544)
at androidx.activity.ComponentActivity.startActivityForResult(ComponentActivity.java:560)
at android.app.Activity.startActivity(Activity.java:4905)
at android.app.Activity.startActivity(Activity.java:4873)
at c.bawp.securemessenger.ChooseActivity$1.onClick(ChooseActivity.java:26)
at android.view.View.performClick(View.java:6597)
at com.google.android.material.button.MaterialButton.performClick(MaterialButton.java:1119)
at android.view.View.performClickInternal(View.java:6574)
at android.view.View.access$3100(View.java:778)
at android.view.View$PerformClick.run(View.java:25885)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
2021-06-26 05:10:29.657 24952-24952/c.bawp.securemessenger I/Process: Sending signal. PID: 24952 SIG: 9
So I don't know if this is the reason why it keeps shutting down any time I tap the button chat. The button chat is created in an activity.xml.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="c.bawp.securemessenger">
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:allowBackup="true"
android:icon="#drawable/icon"
android:label="#string/app_name"
android:supportsRtl="true"
android:usesCleartextTraffic="true"
android:theme="#style/Theme.SecureMessenger">
<activity android:name=".MainActivity" />
<activity android:name=".Main2Activity" />
<activity android:name=".ChooseActivity" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity android:name=".FileExchangeActivity"></activity>
</application>
</manifest>
package c.bawp.securemessenger;
import android.app.Activity;
import android.app.Dialog;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import com.google.android.material.textfield.TextInputLayout;
import java.util.ArrayList;
import java.util.Objects;
import java.util.Set;
public class MainActivity extends AppCompatActivity {
private TextView status;
private Button btnConnect;
private ListView listView;
private Dialog dialog;
private TextInputLayout inputLayout;
private MessageAdapter messageAdapter;
private ArrayAdapter<String> chatAdapter;
private ArrayList<String> chatMessages;
private BluetoothAdapter bluetoothAdapter;
public static final int MESSAGE_STATE_CHANGE = 1;
public static final int MESSAGE_READ = 2;
public static final int MESSAGE_WRITE = 3;
public static final int MESSAGE_DEVICE_OBJECT = 4;
public static final int MESSAGE_TOAST = 5;
public static final String DEVICE_OBJECT = "device_name";
private static final int REQUEST_ENABLE_BLUETOOTH = 1;
private ChatController chatController;
private BluetoothDevice connectingDevice;
private ArrayAdapter<String> discoveredDevicesAdapter;
private Encrypt encrypt;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViewsByIds();
//check device support bluetooth or not
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (bluetoothAdapter == null) {
Toast.makeText(this, "Bluetooth is not available!", Toast.LENGTH_SHORT).show();
finish();
}
//show bluetooth devices dialog when click connect button
btnConnect.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
showPrinterPickDialog();
}
});
//set chat adapter
messageAdapter = new MessageAdapter(this);
listView.setAdapter(messageAdapter);
encrypt = new Encrypt();
}
private final Handler handler = new Handler(new Handler.Callback() {
#Override
public boolean handleMessage(Message msg) {
switch (msg.what) {
case MESSAGE_STATE_CHANGE:
switch (msg.arg1) {
case ChatController.STATE_CONNECTED:
setStatus("Connected to: " + connectingDevice.getName());
btnConnect.setVisibility(View.INVISIBLE);
break;
case ChatController.STATE_CONNECTING:
setStatus("Connecting...");
//btnConnect.setEnabled(false);
break;
case ChatController.STATE_LISTEN:
case ChatController.STATE_NONE:
setStatus("Not connected");
break;
}
break;
case MESSAGE_WRITE:
byte[] writeBuf = (byte[]) msg.obj;
String writeMessage = new String(writeBuf);
writeMessage = encrypt.decrypt(writeMessage);
//check out
MemberData data1 = new MemberData("Me","#C62828");
c.bawp.securemessenger.Message message1 = new c.bawp.securemessenger.Message(writeMessage, data1, true);
messageAdapter.add(message1);
break;
case MESSAGE_READ:
byte[] readBuf = (byte[]) msg.obj;
String readMessage = new String(readBuf, 0, msg.arg1);
readMessage = encrypt.decrypt(readMessage);
MemberData data2 = new MemberData(connectingDevice.getName(),"#C62828");
Log.d("Bug", "handleMessage: " + readMessage);
c.bawp.securemessenger.Message message2 = new c.bawp.securemessenger.Message(readMessage, data2, false);
messageAdapter.add(message2);
break;
case MESSAGE_DEVICE_OBJECT:
connectingDevice = msg.getData().getParcelable(DEVICE_OBJECT);
Toast.makeText(getApplicationContext(), "Connected to " + connectingDevice.getName(),
Toast.LENGTH_SHORT).show();
break;
case MESSAGE_TOAST:
Toast.makeText(getApplicationContext(), msg.getData().getString("toast"),
Toast.LENGTH_SHORT).show();
break;
}
return false;
}
});
private void showPrinterPickDialog() {
dialog = new Dialog(this);
dialog.setContentView(R.layout.layout_bluetooth);
dialog.setTitle("Bluetooth Devices");
if (bluetoothAdapter.isDiscovering()) {
bluetoothAdapter.cancelDiscovery();
}
bluetoothAdapter.startDiscovery();
//Initializing bluetooth adapters
ArrayAdapter<String> pairedDevicesAdapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1);
discoveredDevicesAdapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1);
//locate listviews and attach the adapters
ListView listView = dialog.findViewById(R.id.pairedDeviceList);
ListView listView2 = dialog.findViewById(R.id.discoveredDeviceList);
listView.setAdapter(pairedDevicesAdapter);
listView2.setAdapter(discoveredDevicesAdapter);
// Register for broadcasts when a device is discovered
IntentFilter filter = new IntentFilter();
filter.addAction(BluetoothDevice.ACTION_FOUND);
filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_STARTED);
filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
registerReceiver(discoveryFinishReceiver, filter);
// Register for broadcasts when discovery has finished
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
Set<BluetoothDevice> pairedDevices = bluetoothAdapter.getBondedDevices();
// If there are paired devices, add each one to the ArrayAdapter
if (pairedDevices.size() > 0) {
for (BluetoothDevice device : pairedDevices) {
pairedDevicesAdapter.add(device.getName() + "\n" + device.getAddress());
}
} else {
pairedDevicesAdapter.add(getString(R.string.none_paired));
}
//Handling listview item click event
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
bluetoothAdapter.cancelDiscovery();
String info = ((TextView) view).getText().toString();
String address = info.substring(info.length() - 17);
connectToDevice(address);
dialog.dismiss();
}
});
listView2.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
bluetoothAdapter.cancelDiscovery();
String info = ((TextView) view).getText().toString();
String address = info.substring(info.length() - 17);
connectToDevice(address);
dialog.dismiss();
}
});
dialog.findViewById(R.id.cancelButton).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
dialog.dismiss();
}
});
dialog.setCancelable(true);
dialog.show();
}
private void setStatus(String s) {
status.setText(s);
}
private void connectToDevice(String deviceAddress) {
bluetoothAdapter.cancelDiscovery();
BluetoothDevice device = bluetoothAdapter.getRemoteDevice(deviceAddress);
chatController.connect(device);
}
private void findViewsByIds() {
status = findViewById(R.id.status);
btnConnect = findViewById(R.id.btn_connect);
listView = findViewById(R.id.list);
inputLayout = findViewById(R.id.input_layout);
Button btnSend = findViewById(R.id.btn_send);
btnSend.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (Objects.requireNonNull(inputLayout.getEditText()).getText().toString().equals("")) {
Toast.makeText(MainActivity.this, "Please input some texts", Toast.LENGTH_SHORT).show();
} else {
//TODO: here
sendMessage(inputLayout.getEditText().getText().toString());
inputLayout.getEditText().setText("");
}
}
});
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_ENABLE_BLUETOOTH) {
if (resultCode == Activity.RESULT_OK) {
chatController = new ChatController(this, handler);
} else {
Toast.makeText(this, "Bluetooth still disabled, turn off application!", Toast.LENGTH_SHORT).show();
finish();
}
}
}
private void sendMessage(String message) {
if (chatController.getState() != ChatController.STATE_CONNECTED) {
Toast.makeText(this, "Connection was lost!", Toast.LENGTH_SHORT).show();
return;
}
if (message.length() > 0) {
message = encrypt.encrypt(message);
byte[] send = message.getBytes();
chatController.write(send);
}
}
#Override
public void onStart() {
super.onStart();
if (!bluetoothAdapter.isEnabled()) {
Intent dIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
dIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 3000);
startActivity(dIntent);
} else {
chatController = new ChatController(this, handler);
}
}
#Override
public void onResume() {
super.onResume();
if (chatController != null) {
if (chatController.getState() == ChatController.STATE_NONE) {
chatController.start();
}
}
}
#Override
public void onDestroy() {
super.onDestroy();
if (chatController != null)
chatController.stop();
}
private final BroadcastReceiver discoveryFinishReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
// When discovery finds a device
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
// Get the BluetoothDevice object from the Intent
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
// If it's already paired, skip it, because it's been listed already
if (device.getBondState() != BluetoothDevice.BOND_BONDED) {
discoveredDevicesAdapter.add(device.getName() + "\n" + device.getAddress());
}
// When discovery is finished, change the Activity title
} else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
discoveredDevicesAdapter.clear();
//setProgressBarIndeterminateVisibility(false);
// setSupportProgressBarIndeterminateVisibility(true);
setTitle("Select a device to connect");
if (discoveredDevicesAdapter.getCount() == 0) {
discoveredDevicesAdapter.add("No devices found");
}
} else {
discoveredDevicesAdapter.add("Scanning Bluetooth Devices....");
}
}
};
}