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PythonService.java
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PythonService.java
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package org.kivy.android;
import android.os.Build;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;
import android.app.Service;
import android.os.IBinder;
import android.os.Bundle;
import android.content.Intent;
import android.content.Context;
import android.util.Log;
import android.app.Notification;
import android.app.PendingIntent;
import android.os.Process;
import java.io.File;
//imports for channel definition
import android.app.NotificationManager;
import android.app.NotificationChannel;
import android.graphics.Color;
public class PythonService extends Service implements Runnable {
// Thread for Python code
private Thread pythonThread = null;
// Python environment variables
private String androidPrivate;
private String androidArgument;
private String pythonName;
private String pythonHome;
private String pythonPath;
private String serviceEntrypoint;
// Argument to pass to Python code,
private String pythonServiceArgument;
public static PythonService mService = null;
private Intent startIntent = null;
private boolean autoRestartService = false;
public void setAutoRestartService(boolean restart) {
autoRestartService = restart;
}
public int startType() {
return START_NOT_STICKY;
}
@Override
public IBinder onBind(Intent arg0) {
return null;
}
@Override
public void onCreate() {
super.onCreate();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
if (pythonThread != null) {
Log.v("python service", "service exists, do not start again");
return startType();
}
//intent is null if OS restarts a STICKY service
if (intent == null) {
Context context = getApplicationContext();
intent = getThisDefaultIntent(context, "");
}
startIntent = intent;
Bundle extras = intent.getExtras();
androidPrivate = extras.getString("androidPrivate");
androidArgument = extras.getString("androidArgument");
serviceEntrypoint = extras.getString("serviceEntrypoint");
pythonName = extras.getString("pythonName");
pythonHome = extras.getString("pythonHome");
pythonPath = extras.getString("pythonPath");
boolean serviceStartAsForeground = (
extras.getString("serviceStartAsForeground").equals("true")
);
pythonServiceArgument = extras.getString("pythonServiceArgument");
pythonThread = new Thread(this);
pythonThread.start();
if (serviceStartAsForeground) {
doStartForeground(extras);
}
return startType();
}
protected int getServiceId() {
return 1;
}
protected Intent getThisDefaultIntent(Context ctx, String pythonServiceArgument) {
return null;
}
protected void doStartForeground(Bundle extras) {
String serviceTitle = extras.getString("serviceTitle");
String smallIconName = extras.getString("smallIconName");
String contentTitle = extras.getString("contentTitle");
String contentText = extras.getString("contentText");
Notification notification;
Context context = getApplicationContext();
Intent contextIntent = new Intent(context, PythonActivity.class);
PendingIntent pIntent = PendingIntent.getActivity(context, 0, contextIntent,
PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_UPDATE_CURRENT);
// Unspecified icon uses default.
int smallIconId = context.getApplicationInfo().icon;
if (smallIconName != null) {
if (!smallIconName.equals("")){
int resId = getResources().getIdentifier(smallIconName, "mipmap",
getPackageName());
if (resId ==0) {
resId = getResources().getIdentifier(smallIconName, "drawable",
getPackageName());
}
if (resId !=0) {
smallIconId = resId;
}
}
}
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
// This constructor is deprecated
notification = new Notification(
smallIconId, serviceTitle, System.currentTimeMillis());
try {
// prevent using NotificationCompat, this saves 100kb on apk
Method func = notification.getClass().getMethod(
"setLatestEventInfo", Context.class, CharSequence.class,
CharSequence.class, PendingIntent.class);
func.invoke(notification, context, contentTitle, contentText, pIntent);
} catch (NoSuchMethodException | IllegalAccessException |
IllegalArgumentException | InvocationTargetException e) {
}
} else {
// for android 8+ we need to create our own channel
// https://stackoverflow.com/questions/47531742/startforeground-fail-after-upgrade-to-android-8-1
String NOTIFICATION_CHANNEL_ID = "org.kivy.p4a" + getServiceId();
String channelName = "Background Service" + getServiceId();
NotificationChannel chan = new NotificationChannel(NOTIFICATION_CHANNEL_ID, channelName, NotificationManager.IMPORTANCE_NONE);
chan.setLightColor(Color.BLUE);
chan.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);
NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
manager.createNotificationChannel(chan);
Notification.Builder builder = new Notification.Builder(context, NOTIFICATION_CHANNEL_ID);
builder.setContentTitle(contentTitle);
builder.setContentText(contentText);
builder.setContentIntent(pIntent);
builder.setSmallIcon(smallIconId);
notification = builder.build();
}
startForeground(getServiceId(), notification);
}
@Override
public void onDestroy() {
super.onDestroy();
pythonThread = null;
if (autoRestartService && startIntent != null) {
Log.v("python service", "service restart requested");
startService(startIntent);
}
Process.killProcess(Process.myPid());
}
/**
* Stops the task gracefully when killed.
* Calling stopSelf() will trigger a onDestroy() call from the system.
*/
@Override
public void onTaskRemoved(Intent rootIntent) {
super.onTaskRemoved(rootIntent);
//sticky servcie runtime/restart is managed by the OS. leave it running when app is closed
if (startType() != START_STICKY) {
stopSelf();
}
}
@Override
public void run(){
String app_root = getFilesDir().getAbsolutePath() + "/app";
File app_root_file = new File(app_root);
PythonUtil.loadLibraries(app_root_file,
new File(getApplicationInfo().nativeLibraryDir));
this.mService = this;
nativeStart(
androidPrivate, androidArgument,
serviceEntrypoint, pythonName,
pythonHome, pythonPath,
pythonServiceArgument);
stopSelf();
}
// Native part
public static native void nativeStart(
String androidPrivate, String androidArgument,
String serviceEntrypoint, String pythonName,
String pythonHome, String pythonPath,
String pythonServiceArgument);
}