android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
android:id="@+id/start"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Start Alarm"
/>
android:id="@+id/stop"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Cancel Alarm"
/>
package app.test;
import java.util.Calendar;
import android.app.Activity;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.SystemClock;
import android.view.View;
import android.widget.Toast;
public class AlarmActivity extends Activity implements View.OnClickListener {
private PendingIntent mAlarmIntent;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
findViewById(R.id.start).setOnClickListener(this);
findViewById(R.id.stop).setOnClickListener(this);
Intent launchIntent = new Intent(this, AlarmReceiver.class);
mAlarmIntent = PendingIntent.getBroadcast(this, 0, launchIntent, 0);
}
@Override
public void onClick(View v) {
AlarmManager manager = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
long interval = 5*1000; //5 seconds
switch(v.getId()) {
case R.id.start:
Toast.makeText(this, "Scheduled", Toast.LENGTH_SHORT).show();
manager.setRepeating(AlarmManager.ELAPSED_REALTIME,
SystemClock.elapsedRealtime()+interval,
interval,
mAlarmIntent);
break;
case R.id.stop:
Toast.makeText(this, "Canceled", Toast.LENGTH_SHORT).show();
manager.cancel(mAlarmIntent);
break;
default:
break;
}
}
private long nextStartTime() {
long oneDay = 24*3600*1000; //24 hours
//Set the time to 09:00:00
Calendar startTime = Calendar.getInstance();
startTime.set(Calendar.HOUR_OF_DAY, 9);
startTime.set(Calendar.MINUTE, 0);
startTime.set(Calendar.SECOND, 0);
Calendar now = Calendar.getInstance();
if(now.before(startTime)) {
return startTime.getTimeInMillis();
} else {
startTime.add(Calendar.DATE, 1);
return startTime.getTimeInMillis();
}
}
}
package app.test;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;
public class AlarmReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Calendar now = Calendar.getInstance();
DateFormat formatter = SimpleDateFormat.getTimeInstance();
Toast.makeText(context, formatter.format(now.getTime()), Toast.LENGTH_SHORT).show();
}
}