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package com.clusterrr.usbserialtelnetserver;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.content.ContextCompat;
import android.Manifest;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.hardware.usb.UsbDeviceConnection;
import android.hardware.usb.UsbManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.IBinder;
import android.os.PowerManager;
import android.provider.Settings;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TextView;
import com.hoho.android.usbserial.driver.UsbSerialDriver;
import com.hoho.android.usbserial.driver.UsbSerialPort;
import com.hoho.android.usbserial.driver.UsbSerialProber;
import java.util.List;
public class MainActivity extends AppCompatActivity implements View.OnClickListener, UsbSerialTelnetService.IOnStopListener {
final static String SETTING_TCP_PORT = "tcp_port";
final static String SETTING_BAUD_RATE = "baud_rate";
final static String SETTING_DATA_BITS = "data_bits";
final static String SETTING_STOP_BITS = "stop_bits";
final static String SETTING_PARITY = "parity";
UsbSerialTelnetService.ServiceBinder mServiceBinder = null;
Button mStartButton;
Button mStopButton;
EditText mTcpPort;
EditText mBaudRate;
Spinner mDataBits;
Spinner mStopBits;
Spinner mParity;
TextView mStatus;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mStartButton = findViewById(R.id.buttonStart);
mStopButton = findViewById(R.id.buttonStop);
mTcpPort = findViewById(R.id.editTextTcpPort);
mBaudRate = findViewById(R.id.editTextNumberBaudRate);
mDataBits = findViewById(R.id.spinnerDataBits);
mStopBits = findViewById(R.id.spinnerStopBits);
mParity = findViewById(R.id.spinnerParity);
mStatus = findViewById(R.id.textViewStatus);
mStartButton.setOnClickListener(this);
mStopButton.setOnClickListener(this);
Intent serviceIntent = new Intent(this, UsbSerialTelnetService.class);
bindService(serviceIntent, serviceConnection, 0); // in case it's service already started
updateSettings();
}
@Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
if (intent != null) {
// Start service if need
if ((intent.getAction() == UsbSerialTelnetService.ACTION_NEED_TO_START) &&
(!(mServiceBinder != null && mServiceBinder.isStarted()))) {
// Test that permission is granted
UsbManager manager = (UsbManager) getSystemService(Context.USB_SERVICE);
List<UsbSerialDriver> availableDrivers = UsbSerialProber.getDefaultProber().findAllDrivers(manager);
if (!availableDrivers.isEmpty()) {
UsbSerialDriver driver = availableDrivers.get(0);
UsbDeviceConnection connection = manager.openDevice(driver.getDevice());
if (connection != null) start();
}
}
}
}
@Override
protected void onPause() {
super.onPause();
saveSettings();
}
@Override
public void onClick(View view)
{
switch(view.getId())
{
case R.id.buttonStart:
start();
break;
case R.id.buttonStop:
stop();
break;
}
}
private void start() {
saveSettings();
Intent ignoreOptimization = prepareIntentForWhiteListingOfBatteryOptimization(
this, getPackageName(), false);
if (ignoreOptimization != null) startActivity(ignoreOptimization);
Intent serviceIntent = new Intent(this, UsbSerialTelnetService.class);
SharedPreferences prefs = getPreferences(Context.MODE_PRIVATE);
serviceIntent.putExtra(UsbSerialTelnetService.KEY_TCP_PORT, prefs.getInt(SETTING_TCP_PORT, 2323));
serviceIntent.putExtra(UsbSerialTelnetService.KEY_BAUD_RATE, prefs.getInt(SETTING_BAUD_RATE, 115200));
serviceIntent.putExtra(UsbSerialTelnetService.KEY_DATA_BITS, prefs.getInt(SETTING_DATA_BITS, 3) + 5);
switch (prefs.getInt(SETTING_STOP_BITS, 0)) {
case 0:
serviceIntent.putExtra(UsbSerialTelnetService.KEY_STOP_BITS, UsbSerialPort.STOPBITS_1);
break;
case 1:
serviceIntent.putExtra(UsbSerialTelnetService.KEY_STOP_BITS, UsbSerialPort.STOPBITS_1_5);
break;
case 2:
serviceIntent.putExtra(UsbSerialTelnetService.KEY_STOP_BITS, UsbSerialPort.STOPBITS_2);
break;
}
serviceIntent.putExtra(UsbSerialTelnetService.KEY_PARITY, prefs.getInt(SETTING_PARITY, 0));
startForegroundService(serviceIntent);
bindService(serviceIntent, serviceConnection, 0);
}
private void stop() {
Intent serviceIntent = new Intent(this, UsbSerialTelnetService.class);
stopService(serviceIntent);
mServiceBinder = null;
updateSettings();
}
private ServiceConnection serviceConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName className,
IBinder service) {
mServiceBinder = (UsbSerialTelnetService.ServiceBinder) service;
mServiceBinder.setOnStopListener(MainActivity.this);
updateSettings();
Log.d(UsbSerialTelnetService.TAG, "Service connected");
}
@Override
public void onServiceDisconnected(ComponentName componentName) {
mServiceBinder = null;
Log.d(UsbSerialTelnetService.TAG, "Service disconnected");
}
};
@Override
public void usbSerialServiceStopped() {
updateSettings();
}
private void saveSettings() {
SharedPreferences prefs = getPreferences(Context.MODE_PRIVATE);
int tcpPort;
try {
tcpPort = Integer.parseInt(mTcpPort.getText().toString());
}
catch (NumberFormatException e) {
tcpPort = 2323;
}
int baudRate;
try {
baudRate = Integer.parseInt(mBaudRate.getText().toString());
}
catch (NumberFormatException e) {
baudRate = 115200;
}
prefs.edit()
.putInt(SETTING_TCP_PORT, tcpPort)
.putInt(SETTING_BAUD_RATE, baudRate)
.putInt(SETTING_DATA_BITS, mDataBits.getSelectedItemPosition())
.putInt(SETTING_STOP_BITS, mStopBits.getSelectedItemPosition())
.putInt(SETTING_PARITY, mParity.getSelectedItemPosition())
.commit();
}
private void updateSettings() {
SharedPreferences prefs = getPreferences(Context.MODE_PRIVATE);
boolean started = mServiceBinder != null && mServiceBinder.isStarted();
mStartButton.setEnabled(!started);
mStopButton.setEnabled(started);
mTcpPort.setEnabled(!started);
mBaudRate.setEnabled(!started);
mDataBits.setEnabled(!started);
mStopBits.setEnabled(!started);
mParity.setEnabled(!started);
mTcpPort.setText(String.valueOf(prefs.getInt(SETTING_TCP_PORT, 2323)));
mBaudRate.setText(String.valueOf(prefs.getInt(SETTING_BAUD_RATE, 115200)));
mDataBits.setSelection(prefs.getInt(SETTING_DATA_BITS, 3));
mStopBits.setSelection(prefs.getInt(SETTING_STOP_BITS, 0));
mParity.setSelection(prefs.getInt(SETTING_PARITY, 0));
if (started)
mStatus.setText(getString(R.string.started_please_connect) + " telnet://" + UsbSerialTelnetService.getIPAddress() + ":"+ mTcpPort.getText());
else
mStatus.setText(R.string.not_started);
}
public static Intent prepareIntentForWhiteListingOfBatteryOptimization(Context context, String packageName, boolean alsoWhenWhiteListed) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP)
return null;
if (ContextCompat.checkSelfPermission(context, Manifest.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS) == PackageManager.PERMISSION_DENIED)
return null;
final WhiteListedInBatteryOptimizations appIsWhiteListedFromPowerSave = getIfAppIsWhiteListedFromBatteryOptimizations(context, packageName);
Intent intent = null;
switch (appIsWhiteListedFromPowerSave) {
case WHITE_LISTED:
if (alsoWhenWhiteListed)
intent = new Intent(Settings.ACTION_IGNORE_BATTERY_OPTIMIZATION_SETTINGS);
break;
case NOT_WHITE_LISTED:
intent = new Intent(Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS).setData(Uri.parse("package:" + packageName));
break;
case ERROR_GETTING_STATE:
case UNKNOWN_TOO_OLD_ANDROID_API_FOR_CHECKING:
case IRRELEVANT_OLD_ANDROID_API:
default:
break;
}
return intent;
}
public enum WhiteListedInBatteryOptimizations {
WHITE_LISTED, NOT_WHITE_LISTED, ERROR_GETTING_STATE, UNKNOWN_TOO_OLD_ANDROID_API_FOR_CHECKING, IRRELEVANT_OLD_ANDROID_API
}
public static WhiteListedInBatteryOptimizations getIfAppIsWhiteListedFromBatteryOptimizations(Context context, String packageName) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP)
return WhiteListedInBatteryOptimizations.IRRELEVANT_OLD_ANDROID_API;
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M)
return WhiteListedInBatteryOptimizations.UNKNOWN_TOO_OLD_ANDROID_API_FOR_CHECKING;
final PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
if (pm == null)
return WhiteListedInBatteryOptimizations.ERROR_GETTING_STATE;
return pm.isIgnoringBatteryOptimizations(packageName) ? WhiteListedInBatteryOptimizations.WHITE_LISTED : WhiteListedInBatteryOptimizations.NOT_WHITE_LISTED;
}
}
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