坑爹的百分号啊。
今天leader拉了一个分支项目,我从SVN取下来后,就一直全红,还以为谁把错误的classpath传上去了呢,后来一看,R文件死活不重新生成。从console中看出,报了一个下面的错
Multiple annotations found at this line:
- error: Multiple substitutions specified in non-positional format; did you mean to add the formatted="false" attribute?
上网一查发现(转):
反复检查后发现是string.xml中的 %
导致编译失败,
去Google的Android开发者讨论组查看关于这个问题的讨论
后看到了Xavier Ducrohet大神的回复,说这是由于新的SDK采用了新版本的aapt(Android项目编译器),这个版本的aapt编译起来会比老版本更加的严格,然后在Android最新的开发文档的描述String的部分,已经说明了
如何去设置 %s 等符号,下面是文档片段:
If
you need to format your strings using String.format(String, Object...) ,
then you can do so by putting your format arguments in the string
resource. For example, with the following resource:
如果你需要使用 String.format(String, Object...) 来格式化你的字符串,你可以把格式化参数放在你的字符串中,参见下面的例子:
<string name="welcome_messages">Hello, %1$s! You have %2$d new messages.</string>
In
this example, the format string has two arguments: %1$s is a string and
%2$d is a decimal number. You can format the string with arguements
from your application like this:
在这个例子中,这个格式化的字符串有2个参数, %1$s是个字符串 %2$d 是个浮点数,你可以在你的程序中按照下面的方法来根据参数来格式化字符串:
Resources res = getResources();
String text = String.format(res.getString(R.string.welcome_messages), username, mailCount);
那么根据例子上说的我需要把%s换成%1$s才行了,修改后编译通过,程序成功启动。
问题补充:
有读者问如何在<string></string>中使用%号
有两个办法可供选择
1.用%%来表示1个%,和转意符号 \ 的用法相同
2.如果你的字符串不需要格
式化,可以在你的<string 标签上增加一个属性:formatted="false"例如 <string
name="test" formatted="false">% test %</string> 即可
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