Can’t create handler inside thread that has not called Looper.prepare()
1)在Android 2.3以前，为防止ANR（Application Not Responding），Google是不赞成将网络连接等一系列耗时操作直接放到应用主线程进行的，推荐将这类操作放在子线程内；而Android 4.0版本开始，Google强制要求这类操作必须在子线程内进行，否则将抛出 NetworkOnMainThreadException 异常。
(2)操作UI必须只能在主线程内进行，否则报“Can’t create handler inside thread that has not called Looper.prepare()”错误。
在这里需要注意的是，Toast 也属于UI操作。
具体操作可以参考：http://jerry.hk/notes/android-thread-and-handler
Can’t create handler inside thread that has not called Looper.prepare()的更多相关文章
- 在子线程中new Handler报错--Can't create handler inside thread that has not called Looper.prepare()
在子线程中new一个Handler为什么会报以下错误? java.lang.RuntimeException: Can't create handler inside thread that has ...
- Android 线程更新UI报错 : Can't create handler inside thread that has not called Looper.prepare()
MainActivity中有一个按钮,绑定了save方法 public void save(View view) { String title = titleText.getText().toStri ...
- 关于子线程使用Toast报错Can't create handler inside thread that has not called Looper.prepare()的解决办法
形同如下代码,在Thread中调用Toast显示错误信息: new Thread(new Runnable(){ @Override public void run() { try{ weatherD ...
- Android-java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
章出自:luchg技术交流 http://www.luchg.com 版权所有.本站文章除注明出处外,皆为作者原创文章,可自由引用,但请注明来源,谢谢. Android-java.lang.Runti ...
- Android handler 报错处理Can't create handler inside thread that has not called Looper.prepare()
问题: 写了一个sdk给其他人用,提供一个回调函数,函数使用了handler处理消息 // handler监听网络请求,完成后操作回调函数 final Handler trigerGfHandler ...
- Android进阶(八)Can't create handler inside thread that has not called Looper.prepare()
Error:Can't create handler inside thread that has not called Looper.prepare() 原代码: //利用Handler消息传递机制 ...
- Android进阶(十六)子线程调用Toast报Can't create handler inside thread that has not called Looper.prepare() 错误
原子线程调用Toast报Can't create handler inside thread that has not called Looper.prepare() 错误 今天用子线程调Toast报 ...
- 【转】在子线程中new Handler报错--Can't create handler inside thread that has not called Looper.prepare()
在子线程中new一个Handler为什么会报以下错误? java.lang.RuntimeException: Can't create handler inside thread that has ...
- Android 错误提示: Can't create handler inside thread that has not called Looper.prepare()
Can't create handler inside thread that has not called Looper.prepare() 将 Handler handler = new Hand ...
随机推荐
- 转摘：常用ubuntu 关机，重启，注销命令
1.关机命令 shutdown 好像ubuntu的终端中默认的是当前用户的命令,只是普通用户,因此在终端器中可以使用sudo -sh 转换到管理员root用户下执行命令. 1).shutdown –h ...
- python(3)-函数动态参数
先来看一段代码 def show(*arg): print(arg, type(arg)) if __name__ == "__main__": show(1) show(1,2, ...
- mysql中文乱码的完美解决方案
问题描述: mysql插入中文时显示为乱码或"?"号 解决方案: 修改mysql的my.ini配置 [mysql] default_character_set=utf8 [mysq ...
- linux注销开关机
注销:exit 重启:reboot shutdown-r 表示延时分钟数 关机:halt shut -h
- XShell提示Connection closed by foreign host的问题 和 路由器分配IP的规则
情况是这样的: VMware中有三个Linux机器分别是crxy99(192.168.1.99),crxy100(192.168.1.100),crxy101(192.168.1.101),crxy1 ...
- 【dp入门题】【跟着14练dp吧...囧】
A HDU_2048 数塔 dp入门题——数塔问题:求路径的最大和: 状态方程: dp[i][j] = max(dp[i+1][j], dp[i+1][j+1])+a[i][j];dp[n][j] = ...
- 【数论】UVa 10586 - Polynomial Remains
Problem F: Polynomial Remains Given the polynomial a(x) = an xn + ... + a1 x + a0, compute the remai ...
- css3 颜色记
css3 颜色 opacity 使元素呈现出半透明效果. opacity:alphavalue || inherit alphavalue:默认值为1,可以取0~1任意浮点数.取值为1时,元素完全不透 ...
- Linux 命令 - w: 显示登录的用户及其当前执行的任务
命令格式 w - [husfV] [user] 命令参数 -h 不打印头部信息 -u 当列出当前进程和 CPU 时间时忽略用户名,这主要是用于执行su命令后的情况. -s 使用简短的格式化,不打印 L ...
- SQL<>0查询不到NUll的值
这几天遇到这样一个问题,sql中写<>0,刚好某个记录是NULL,道理上是满足<>0的啊,可是就是抽不出来,关于这个问题,到处找了点资料,算是这里 写一个总结出来. 用java ...