我正在研究React Native导航教程.我发现所有布局都从屏幕顶部而不是状态栏下方开始加载.这会导致大多数布局与状态栏重叠.我可以通过在加载视图时向视图添加填充来解决此问题.这是实际的方法吗?我不认为手动添加填充是解决它的实际方法.有更优雅的方法来解决这个问题吗?
import React, { Component } from 'react';
import { View, Text, Navigator } from 'react-native';
export default class MyScene extends Component {
static get defaultProps() {
return {
title : 'MyScene'
};
}
render() {
return (
<View style={{padding: 20}}> //padding to prevent overlap
<Text>Hi! My name is {this.props.title}.</Text>
</View>
)
}
}
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我是一个刚进入Android开发的新手.我正在浏览"Building your first app官方Android开发人员网页上的教程.我按照所有说明进行操作,但它在Eclipse中显示了这个错误代码.错误信息很长,我想我的设置,SDK或者一定有问题任何人都可以帮助我解决这个问题?为了您的信息,我的目标SDK是API19,我也正在编译它API19
[2014-10-22 17:13:51 - appcompat_v7] WARNING: unable to write jarlist cache file C:\Users\Cliff\workspace\appcompat_v7\bin\jarlist.cache
[2014-10-22 17:13:51 - appcompat_v7] WARNING: unable to write jarlist cache file C:\Users\Cliff\workspace\appcompat_v7\bin\jarlist.cache
[2014-10-22 17:13:51 - appcompat_v7] WARNING: unable to write jarlist cache file C:\Users\Cliff\workspace\appcompat_v7\bin\jarlist.cache
[2014-10-22 17:13:53 - MyFirstApp] C:\Users\Cliff\workspace\appcompat_v7\res\values-v21\styles_base.xml:75: error: Error retrieving parent for item: No resource found that matches the given name 'android:Widget.Material.ActionButton'.
[2014-10-22 17:13:53 - MyFirstApp] C:\Users\Cliff\workspace\appcompat_v7\res\values-v21\styles_base.xml:79: error: Error retrieving parent for item: No resource found that …Run Code Online (Sandbox Code Playgroud) 我正在编写有关gRPC 的教程。当我生成.pb.go文件时,我XXX_*在结构体中得到了某种类型。
这是我的consignment.proto文件:
syntax = "proto3";
package go.micro.srv.consignment;
service ShippingService {
rpc CreateConsignment(Consignment) returns (Response) {}
}
message Consignment {
string id = 1;
string description = 2;
int32 weight = 3;
repeated Container containers = 4;
string vessel_id = 5;
}
message Container {
string id = 1;
string customer_id = 2;
string origin = 3;
string user_id = 4;
}
message Response {
bool created = 1;
Consignment consignment = …Run Code Online (Sandbox Code Playgroud) 我正在使用Gorilla Mux测试一个简单的服务器应用程序.运行应用程序时,我一直收到未定义的错误.这是应用程序的结构
src/ptest/
??? app
? ??? app.go
??? main.go
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main.go
package main
import (
"fmt"
"ptest/app"
)
func main() {
fmt.Println("Hello Testing App")
app := App{}
}
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app.go
package app
import (
"fmt"
"log"
"net/http"
"github.com/gorilla/mux"
)
type App struct {
Router *mux.Router
}
func (A *App) Run() {
fmt.Println("Listening at :8080")
log.Fatal(http.ListenAndServe(":8080", A.Router))
}
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正如您所看到的,我有一个通过导入来main初始化app的ptest/app.但是当我go run *go:我收到错误:
# command-line-arguments
./main.go:5:2: imported and not used: "ptest/app"
./main.go:10:9: undefined: App
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这是我的go …