src/com/android/disablesuspend/DisableSuspendService.java

package com.android.disablesuspend;

import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.os.PowerManager;
import android.util.Log;

public class DisableSuspendService extends Service {

    private static final String TAG = "DisableSuspendService";

    private PowerManager pm;
    private PowerManager.WakeLock wl;

    private final IBinder mBinder = new LocalBinder();

    @Override
    public void onCreate() {
        super.onCreate();

        Log.d(TAG, "create");

        pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
        wl = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK, "DisableSuspend");
    }

    @Override
    public void onDestroy() {
        super.onDestroy();

        if (wl.isHeld()) {
            Log.d(TAG, "onDestroy release");
            wl.release();
        }
    }

    public class LocalBinder extends Binder {
        DisableSuspendService getService() {
            return DisableSuspendService.this;
        }
    }

    @Override
    public IBinder onBind(Intent intent) {
        return mBinder;
    }

    public void acquire() {
        wl.acquire();
    }

    public boolean isHeld() {
        return wl.isHeld();
    }

    public void release() {
        if (wl.isHeld()) {
            wl.release();
        }
    }
}