一个用MVC模式封装的GRPC网络调用
1 Activity里面 初始化callback
public void initCallBack() {
callBack = new CallBack() {
@Override
public void callBack(Object result) {
cancelWaitingDialog();
if (result == null) {
//报这个异常的，io.grpc.StatusRuntimeException: UNAVAILABLE: Name resolution failed
Toast.makeText(MainActivity.this, "老铁们请在 gradle中配置有效的端口号和地址", Toast.LENGTH_LONG).show();
return;
}
HelloResponse response = (HelloResponse) result;
//处理数据,刷新UI
}
};
}
2 调用获取数据的方法 DataManage.getInstance().SayHello("xxxx", callBack);
SayHello详细方法：
/**
* 测试方法
*
* @param mMessage
* @return
*/
public GrpcAsyncTask<String, Void, HelloResponse> SayHello(final String mMessage, CallBack callBack) {
return new GrpcAsyncTask<String, Void, HelloResponse>(callBack) {
@Override
protected HelloResponse doRequestData(ManagedChannel channel) {
HelloRequest message = HelloRequest.newBuilder()
.setName(mMessage)
.build();
HelloResponse response = null;
try {
response = getStub(channel).sayHello(message);
}catch (Exception e) {
Log.i("DataManage", e.getMessage());
}
return response;
}
}.doExecute();
}
3 callback的调用时机：
@Override
protected void onPostExecute(Data result) {
if (callBack != null) {
CallBack<Data> c = callBack.get();
if (c != null) {
c.callBack(result);
}
}
try {
if (mChannel != null) {
mChannel.shutdown().awaitTermination(1, TimeUnit.SECONDS);
}
} catch (Exception e) {
Thread.currentThread().interrupt();
}
}
4 结束。