在Android中，AlarmManager仅用于设置定时器和延迟执行任务，不会返回任何数据给应用程序。如果需要将数据返回给应用程序，可以使用IntentService或BroadcastReceiver等组件来处理。以下是一些示例代码：

使用IntentService：

1.创建一个MyIntentService类，继承自IntentService，重写onHandleIntent方法。

public class MyIntentService extends IntentService {
    public MyIntentService() {
        super("MyIntentService");
    }

    @Override
    protected void onHandleIntent(Intent intent) {
        //执行任务
        String data = "执行结果";
        //将数据返回给应用程序
        Intent broadcastIntent = new Intent();
        broadcastIntent.setAction("com.example.RESULT_ACTION");
        broadcastIntent.putExtra("result", data);
        sendBroadcast(broadcastIntent);
    }
}

2.在应用程序中启动MyIntentService，并注册一个BroadcastReceiver来接收数据。

Intent intent = new Intent(this, MyIntentService.class);
startService(intent);

BroadcastReceiver receiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        String data = intent.getStringExtra("result");
        //处理返回的数据
    }
};

IntentFilter filter = new IntentFilter();
filter.addAction("com.example.RESULT_ACTION");

registerReceiver(receiver, filter);

使用BroadcastReceiver：

1.创建一个MyBroadcastReceiver类，继承自BroadcastReceiver，重写onReceive方法。

public class MyBroadcastReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        //执行任务
        String data = "执行结果";
        //将数据返回给应用程序
        Intent broadcastIntent = new Intent();
        broadcastIntent.setAction("com.example.RESULT_ACTION");
        broadcastIntent.putExtra("result", data);
        context.sendBroadcast(broadcastIntent);
    }
}

2.在应用程序中注册MyBroadcastReceiver，并发送一个自定义的广播来触发MyBroadcastReceiver的onReceive方法。

IntentFilter filter = new IntentFilter();
filter.addAction("com.example.MY_ACTION");

MyBroadcastReceiver receiver = new MyBroadcastReceiver();
registerReceiver(receiver, filter);

Intent intent = new Intent(this, MyBroadcastReceiver.class);
intent.setAction("com.example.MY_ACTION");
sendBroadcast(intent);

当MyBroadcastReceiver的onReceive方法被调用时，它将执行任务并将数据返回给应用程序。应用程序可以通过注册BroadcastReceiver来接收数据并进行处理。