我想观看系统设置并在其值发生变化时收到通知。光标类有一个setNotificationUri方法听起来不错,但它不能正常工作和编码,也觉得很奇怪......那是我所做的:监视Android系统设置值
// Create a content resolver and add a listener
ContentResolver resolver = getContentResolver();
resolver.addStatusChangeListener(ContentResolver.SYNC_OBSERVER_TYPE_SETTINGS | ContentResolver.SYNC_OBSERVER_TYPE_PENDING | ContentResolver.SYNC_OBSERVER_TYPE_ACTIVE, new MyObserver());
// I somehow need to get an instance of Cursor to use setNotificationUri in the next step...
Cursor cursor2 = resolver.query(Settings.System.CONTENT_URI, null, null, null, null);
// For testing purposes monitor all system settings
cursor2.setNotificationUri(resolver, Settings.System.CONTENT_URI);
监听器:
public class MyObserver implements SyncStatusObserver {
public void onStatusChanged(int which) {
Log.d("TEST", "status changed, which = " + which);
}
}
好,显然这个监听器从来没有被调用,我在logcat中找不到指定TEST标签的条目):(为了测试,我在android设置菜单中手动将亮度设置从手动更改为自动)。任何暗示我做错了什么?任何其他更好的方式来监视Android系统设置?
感谢您的任何提示!