-
```
Provide up to the minute user information to the user by using push
notifications. This will require either gtalk hacks or an android based push
notifications infrastructure provided by Google.
…
-
> 命令模式：请求以命令的形式包裹在对象中，并传给调用对象。调用对象寻找可以处理该命令的合适的对象，并把该命令传给相应的对象，该对象执行命令。
生活小栗子：客户下单，订单记录了客户购买的产品，仓库根据订单给客户备货。
### 模式特点
命令模式由三种角色构成：
1. 发布者 `invoker`（发出命令，调用命令对象，不知道如何执行与谁执行）；
2. 接收者 `receiver`…
-
```
I'm try to compile and use sample code. I've added google_play_service_lib and
it compile and run, but if i try to send a push notification it crashes.
On logcat i see:
ava.lang.RuntimeException…
-
```
I'm try to compile and use sample code. I've added google_play_service_lib and
it compile and run, but if i try to send a push notification it crashes.
On logcat i see:
ava.lang.RuntimeException…
-
```
I'm try to compile and use sample code. I've added google_play_service_lib and
it compile and run, but if i try to send a push notification it crashes.
On logcat i see:
ava.lang.RuntimeException…
-
```
I'm try to compile and use sample code. I've added google_play_service_lib and
it compile and run, but if i try to send a push notification it crashes.
On logcat i see:
ava.lang.RuntimeException…
-
```
I'm try to compile and use sample code. I've added google_play_service_lib and
it compile and run, but if i try to send a push notification it crashes.
On logcat i see:
ava.lang.RuntimeException…
-
```
I'm try to compile and use sample code. I've added google_play_service_lib and
it compile and run, but if i try to send a push notification it crashes.
On logcat i see:
ava.lang.RuntimeException…
-
```
I'm try to compile and use sample code. I've added google_play_service_lib and
it compile and run, but if i try to send a push notification it crashes.
On logcat i see:
ava.lang.RuntimeException…
-
gun v0.9.996
```
.....\node_modules\ws\lib\websocket.js:143
this._ultron.on('data', (data) => this._receiver.add(data));
^
TypeError: Ca…