Android 安卓定时器内部服务
我在安卓服务里面有定时器,我需要这个定时器启动一次,并且我对这个服务有多个调用。每次调用Android 安卓定时器内部服务,android,Android,我在安卓服务里面有定时器,我需要这个定时器启动一次,并且我对这个服务有多个调用。每次调用startService()时,服务都会启动新的计时器(计时器执行其作业的次数与调用startService()的次数相同) 这是密码 private TimerTask notificationTask = new TimerTask() { @Override public void run() { posNotification(); } };
startService()
时,服务都会启动新的计时器(计时器执行其作业的次数与调用startService()
的次数相同)
这是密码
private TimerTask notificationTask = new TimerTask() {
@Override
public void run() {
posNotification();
}
};
@Override
public void onCreate() {
super.onCreate();
notificationTimer.schedule(notificationTask, 1000L, 10 * 1000L);
}
您可以将值保留为共享首选项,也可以使用全局变量。最初将其设置为0。调用服务时,请检查该值。如果为0,则启动计时器并将全局值设置为1。所以下次,它不会启动你的计时器。这对你有意义吗?请查看我准备的示例代码,并告诉我它是否解决了您的问题:
package com.example.timerinservice;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity {
Button btnStartService;
Context context;
int service_count = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
context = MainActivity.this;
btnStartService = (Button) findViewById(R.id.buttonStartService);
btnStartService.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
Intent intent = new Intent(context, TimerService.class);
intent.putExtra("servicecount", service_count);
context.startService(intent);
service_count++;
}
});
}
}
-----------------
package com.example.timerinservice;
public class GlobalVariable {
public static boolean TIMER_STYARTED = false;
}
-----------------
package com.example.timerinservice;
import java.util.Timer;
import java.util.TimerTask;
import android.app.IntentService;
import android.content.Intent;
import android.util.Log;
public class TimerService extends IntentService {
Timer notificationTimer;
int get_service_count = 0;
public TimerService() {
super("timerservice");
}
@Override
protected void onHandleIntent(Intent intent) {
get_service_count = intent.getExtras().getInt("servicecount");
}
@Override
public void onCreate() {
super.onCreate();
if(!GlobalVariable.TIMER_STYARTED){
notificationTimer = new Timer();
notificationTimer.schedule(notificationTask, 1000L, 10 * 1000L);
GlobalVariable.TIMER_STYARTED = true;
}
}
private TimerTask notificationTask = new TimerTask() {
@Override
public void run() {
//posNotification();
Log.d("INSIDE","run() of TimerTask for: "+get_service_count);
}
};
}
请查找上面编辑的代码,并让我知道它是否解决了您的问题。