如果当我的活动不在多任务中时单击我的前台服务通知，则我的活动“重新启动”，文本/开关状态被重置。那么，如何保持这种状态呢？
我尝试过android:launchMode="singleInstance"，但仅在活动处于多任务状态时才起作用：/
MyActivity.java
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
testConnection = findViewById(R.id.testButton);
enableBot = findViewById(R.id.switch2);
url = findViewById(R.id.editText3);
url_send = findViewById(R.id.editText5);
apiToken = findViewById(R.id.editText4);
textLog = findViewById(R.id.textView);
textLog.setText("\n#[" + formatTime() + "] - Démarrage de l'application...");
ActivityCompat.requestPermissions(MainActivity.this,
new String[]{Manifest.permission.SEND_SMS},
1);
connection=new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
SMSService.SMSServiceBinder binderr=(SMSService.SMSServiceBinder)service;
services=binderr.getServiceSystem();
}
@Override
public void onServiceDisconnected(ComponentName name) {
}
};
createNotificationChannel();
}
@Override
protected void onResume() {
super.onResume();
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
// BOUTON CENTRALE
/* testConnection.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
sendAndRequestResponse();
}
});*/
enableBot.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked == true) {
textLog.setText("\n###########################" + textLog.getText().toString());
//textLog.setText("\n#" + formatTime() + " - Vérification reseau/internet..." + textLog.getText().toString());
textLog.setText("\n#[" + formatTime() + "] - Démarrage du Bot..." + textLog.getText().toString());
interfaceOff();
testConnection.setBackgroundColor(Color.YELLOW);
textLog.setText("\n#[" + formatTime() + "] - Vérification connection internet..." + textLog.getText().toString());
ConnectivityManager connManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo mWifi = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
if (mWifi.isConnected()) { // Do whatever
textLog.setText("\n#[" + formatTime() + "] - Connecté en Wifi !" + textLog.getText().toString());
codeWifi = true;
} else {
textLog.setText("\n#[" + formatTime() + "] - Veuillez activé le wifi !" + textLog.getText().toString());
codeWifi = false;
}
string_url = url.getText().toString();
string_url_send = url_send.getText().toString();
string_apiToken = apiToken.getText().toString();
//Fonction de contrôle de connection
if (codeWifi == false) {
Toast.makeText(MainActivity.this, "Impossible de se connecter !", Toast.LENGTH_SHORT).show();
testConnection.setBackgroundColor(Color.RED);
interfaceOn();
//textLog.setText("\n#[" + formatTime() + "] - Echec connection..." + textLog.getText().toString());
textLog.setText("\n#[" + formatTime() + "] - Désactivation du bot..." + textLog.getText().toString());
textLog.setText("\n###########################" + textLog.getText().toString());
return;
}
textLog.setText("\n#[" + formatTime() + "] - Connection..." + textLog.getText().toString());
Toast.makeText(MainActivity.this, "Bot Sms activé !", Toast.LENGTH_SHORT).show();
testConnection.setBackgroundColor(Color.GREEN);
// textLog.setText("\n#[" + formatTime() + "] - Connection Réussi..." + textLog.getText().toString());
// Faire une requête toutes les x minutes.
intent = new Intent(getApplicationContext(), SMSService.class);
intent.putExtra("url_get", string_url);
intent.putExtra("url_post", string_url_send);
bindService(intent, connection, Context.BIND_AUTO_CREATE);
startService(intent);
} else {
Toast.makeText(MainActivity.this, "Bot Sms désactivé !", Toast.LENGTH_SHORT).show();
textLog.setText("\n#[" + formatTime() + "] - Désactivation du bot..." + textLog.getText().toString());
textLog.setText("\n###########################" + textLog.getText().toString());
testConnection.setBackgroundColor(Color.RED);
interfaceOn();
unbindService(connection);
stopService(intent);
return;
}
}
});
}
前台服务
@Override
public void onCreate(){
super.onCreate();
Toast.makeText(getApplicationContext(), "CFCFCFGCG", Toast.LENGTH_SHORT).show();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// On démarre le service, et on le garde actif
//TODO do something useful
string_url_get = intent.getExtras().getString("url_get");
string_url_post = intent.getExtras().getString("url_post");
Intent notificationIntent = new Intent(this, MainActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this,0, notificationIntent, 0);
Notification notification = new NotificationCompat.Builder(this, CHANNEL_ID)
.setContentTitle("Exemple Service")
.setContentText(string_url_get)
.setSmallIcon(R.drawable.ic_android)
.setContentIntent(pendingIntent)
.build();
startForeground(1, notification);
handler = new Handler();
r = new Runnable() {
@Override
public void run() {
if(killme == true && nbSMSforkill <= 0){
handler.removeCallbacks(r);
stopForeground(true);
}else {
//textLog.setText("\n#[" + formatTime() + "] - Envoie requête a l'API..." + textLog.getText().toString());
jsonRequest();
}
}
};
//Lancement du Handler
handler.postDelayed(r, 1000);
Toast.makeText(getApplicationContext(), "COUCOU", Toast.LENGTH_SHORT).show();
return Service.START_REDELIVER_INTENT;
}
public class SMSServiceBinder extends Binder {
public SMSService getServiceSystem(){
return SMSService.this;
}
}
@Override
public void onDestroy() {
super.onDestroy();
killme = true;
Log.d("Response", "SERVICE ENDING");
}
@Override
public IBinder onBind(Intent intent) {
// Interface de communication
// TODO: Return the communication channel to the service.
//throw new UnsupportedOperationException("Not yet implemented");
return binder;
}
我认为我没有保存stateInstance，但是，这对我来说是第一次在开发Android上使用，我迷路了：/