使用PebbleKit向Pebble发送布尔值(Sending boolean to Pebble with PebbleKit)

 我从来没有真正做过太多的C，并且对于从Android应用程序向Pebble Watch发送布尔值的最佳方式感到有些困惑。 
 
 我的字符串工作正常，但在PebbleDictionary上似乎没有addBoolean方法。 作为一个解决方法我试图使用addUint8发送1或0，但我在处理Pebble上的消息时遇到问题。 
 
 这是我的Android代码： 
 
    PebbleDictionary data = new PebbleDictionary();
    if (isGPSFix()){
        data.addUint8(GPS_HAS_FIX_KEY, Byte.valueOf("1"));
    } else {
        data.addUint8(GPS_HAS_FIX_KEY, Byte.valueOf("0"));
    }
    PebbleKit.sendDataToPebble(app.getContext(), UUID, data);
 
 在我的Pebble中我有一个数据结构： 
 
static struct MyData {
  uint8_t haveGPS[1];
  .... // other stuff ommitted
  AppSync sync;
  uint8_t sync_buffer[256];
} s_data;
 
 然后我试图在我的sync_tuple_changed回调中比较它。 
 
static void sync_tuple_changed_callback(const uint32_t key, const Tuple* new_tuple, const Tuple* old_tuple, void* context) {
(void) old_tuple;

   switch (key) {
     case GPS_HAS_FIX_KEY:
       if (memcmp(s_data.haveGPS, new_tuple->value->data, 8) == 0){
         memcpy(s_data.haveGPS,new_tuple->value->data, new_tuple->length);
         vibes_short_pulse();
       }
     break;
     default:
       return;
   }
 }
 
 手表不会崩溃，当手机掉落或获得GPS时，它永远不会振动。 

I've never really done much C and am a bit stumped on the best way to send a boolean from an Android app to the Pebble Watch.
 
I have strings working fine, but there doesn't seem to be an addBoolean method on PebbleDictionary. As a work around I am trying to use addUint8 to send a 1 or 0, but am having trouble handling the message on the Pebble.
 
Here is my Android code:
 
    PebbleDictionary data = new PebbleDictionary();
    if (isGPSFix()){
        data.addUint8(GPS_HAS_FIX_KEY, Byte.valueOf("1"));
    } else {
        data.addUint8(GPS_HAS_FIX_KEY, Byte.valueOf("0"));
    }
    PebbleKit.sendDataToPebble(app.getContext(), UUID, data);
 
And in my Pebble I have a data struct:
 
static struct MyData {
  uint8_t haveGPS[1];
  .... // other stuff ommitted
  AppSync sync;
  uint8_t sync_buffer[256];
} s_data;
 
And then I am trying to compare it like this in my sync_tuple_changed callback.
 
static void sync_tuple_changed_callback(const uint32_t key, const Tuple* new_tuple, const Tuple* old_tuple, void* context) {
(void) old_tuple;

   switch (key) {
     case GPS_HAS_FIX_KEY:
       if (memcmp(s_data.haveGPS, new_tuple->value->data, 8) == 0){
         memcpy(s_data.haveGPS,new_tuple->value->data, new_tuple->length);
         vibes_short_pulse();
       }
     break;
     default:
       return;
   }
 }
 
The watch doesn't crash, it just never vibrates when the phone drops or acquires GPS.

原文：https://stackoverflow.com/questions/17213038