android从广播接收器获取偏好

Question

好吧，我是 Android 新手。我正在尝试编写一个应用程序，其中有一个 Activity 启动另一个 Activity (首选项 Activity )和一个 BoradcastReceiver。它们都在三个不同的文件中。我的问题是:如何在这些组件之间共享首选项，例如如何从广播接收器读取在首选项 Activity 中设置的首选项？

Answer 1

我之前问过同样的问题，这里是我使用的代码:

public class BootupReceiver extends BroadcastReceiver {

private static final boolean BOOTUP_TRUE = true;
private static final String BOOTUP_KEY = "bootup";

@Override
public void onReceive(Context context, Intent intent) {

    if(getBootup(context)) {
        NotificationManager NotifyM = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
        Notification Notify = new Notification(R.drawable.n,
                "NSettings Enabled", System.currentTimeMillis());

        Notify.flags |= Notification.FLAG_NO_CLEAR;
        Notify.flags |= Notification.FLAG_ONGOING_EVENT;

        RemoteViews contentView = new RemoteViews(context.getPackageName(), R.layout.notification);
        Notify.contentView = contentView;

        Intent notificationIntent = new Intent(context, Toggles.class);
        PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
        Notify.contentIntent = contentIntent;

                    int HELO_ID = 00000;

        NotifyM.notify(HELLO_ID, Notify);
    }

    Intent serviceIntent = new Intent();
    serviceIntent.setAction("com.leozar100.myapp.NotifyService");
    context.startService(serviceIntent);
}

public static boolean getBootup(Context context){
    return PreferenceManager.getDefaultSharedPreferences(context).getBoolean(BOOTUP_KEY, BOOTUP_TRUE);
}
}

我启动的服务什么都不做，我只是启动一个，因为我认为它只是帮助广播接收器工作。此广播接收器也像这样在我的 list 中注册:

<receiver android:name=".BootupReceiver">
        <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED" />
        <category android:name="android.intent.category.HOME" />
        </intent-filter>
</receiver>

启动时需要权限 android.permission.RECEIVE_BOOT_COMPLETED

可以引用我的问题here

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