我正在使用SQLite DB编写一个Android应用程序.
我进行了很少的实验,并将数据库版本从1更改为2.
然后我的数据库架构变得稳定,因为我没有发布应用程序,它是我自己使用的
我决定再次将版本更改为1.
我做了全新安装,一切正常.
但是第二次运行会抛出这个错误:
06-05 10:03:35.683: E/AndroidRuntime(9010): android.database.sqlite.SQLiteException: Can't downgrade database from version 2 to 1
06-05 10:03:35.683: E/AndroidRuntime(9010): at android.database.sqlite.SQLiteOpenHelper.onDowngrade(SQLiteOpenHelper.java:361)
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为什么这样,毕竟我做了全新安装,DB也应该被删除了.没有?
如何将版本再次更改为1?
我尝试构建我的android项目,我得到:
Information:Gradle: Executing tasks: [clean, :app:compileDebugSources]
Information:1/10/15, 11:13 AM - Compilation completed successfully in 5 sec
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然后我尝试将其部署到我的设备并获取:
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:lint'.
> Lint found errors in the project; aborting build.
Fix the issues identified by lint, or add the following to your build script to proceed with errors:
...
android {
lintOptions {
abortOnError false
}
}
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然后我看一下皮棉报告,看看:
InvalidPackage: Package not included in Android
../../../../../.gradle/caches/modules-2/files-2.1/org.roboguice/roboblender/3.0.1/d629079b9bfa8d889ec833d1eb747e89cf789bfa/roboblender-3.0.1.jar: Invalid package reference in …
Run Code Online (Sandbox Code Playgroud) 我写了一个参数化的junit测试.
有没有内置的方法让它并行运行?任何@annoation
的例子吗?
如果没有,我唯一的方法是手动编写 -
你将如何管理junit,java中的线程池?
? ~ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
-e:77: warning: Insecure world writable dir /usr/local/bin in PATH, mode 040677
It appears Homebrew is already installed. If your intent is to reinstall you
should do the following before running this installer again:
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/uninstall)"
The current contents of /usr/local are bin CODEOFCONDUCT.md etc git lib Library LICENSE.txt munki README.md sbin share .git .github .gitignore
? ~ brew install maven
zsh: command not found: brew
Run Code Online (Sandbox Code Playgroud) 在我的Android应用程序中,我想更改editText的topMargin.
问题是我想改变它"dp"明智而不是像素化.
我想只改变topMaring.保持原样.不把它们设置为零?
以编程方式我只能在int中设置边距?
我想运行这行代码:
assertThat(contextPin.get(), equalTo(pinPage.getPinObjFromUi()));
但我想打印到日志提供信息
这意味着我可以知道哪些字段不相等.
所以我想过要实现一个匹配器.
我用Google搜索了,但无法正确编写
因为我的方法无法将对象actual
和expected
对象组合在一起.
这是我的代码:
我该怎么写干净呢?
public class PinMatcher extends TypeSafeMatcher<Pin> {
private Pin actual;
private Object item;
public PinMatcher(Pin actual) {
this.actual = actual;
}
@Override
protected boolean matchesSafely(Pin item) {
return false;
}
@Override
public void describeTo(Description description) {
}
//cannot override this way
@Override
public boolean matches(Object item){
assertThat(actual.title, equalTo(expected.title));
return true;
}
//cannot access actual when called like this:
// assertThat(contextPin.get(), new PinMatcher.pinMatches(pinPage.getPinObjFromUi()));
@Override
public boolean pinMatches(Object item){ …
Run Code Online (Sandbox Code Playgroud) 我从服务器获取此字符串:
[
{
"title":"spoil the ones u love today",
"startDateTime":"2014-08-10T20:10:36.7158Z"
},
{
"title":"home made patisserie",
"startDateTime":"2014-08-10T20:08:45.0218Z"
}
]
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我试着解析它一个对象
public class Offer implements Serializable {
public String title;
public Date startDateTime;
}
Type collectionType = new TypeToken<ArrayList<Offer>>() {}.getType();
mOffersList.addAll((Collection<? extends Offer>) gson.fromJson(result, collectionType));
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但是当我将"startDate"定义为Date时
我从gson回来的系列是空的
当我将"startDate"定义为String时
集合正确填充.
我想更改其日期格式.这就是我喜欢将它保存为Date对象的原因.
我试过了
Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ").create;
然而Gson无法解析服务器的字符串
Date startDateTime
.没有添加任何东西mOffersList
,它保持空白.
我究竟做错了什么?
我尝试npm start
为我的 angular2 项目运行
但得到这个错误:
push_quick git:(master) npm start
> angular2-quickstart@1.0.0 start /Users/eladb/WorkspaceQa/SupporTool/src/main/webapp/html/push_quick
> tsc && concurrently "tsc -w" "lite-server"
app/shared/stringUtils.service.ts(8,9): error TS7005: Variable 'a' implicitly has an 'any[]' type.
npm ERR! Darwin 15.6.0
npm ERR! argv "/usr/local/Cellar/node/6.3.1/bin/node" "/usr/local/bin/npm" "start"
npm ERR! node v6.3.1
npm ERR! npm v3.10.3
npm ERR! code ELIFECYCLE
npm ERR! angular2-quickstart@1.0.0 start: `tsc && concurrently "tsc -w" "lite-server" `
npm ERR! Exit status 2
npm ERR!
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对于这种方法:
@Injectable()
export class StringUtilsService {
mapToFormParamsString( dict …
Run Code Online (Sandbox Code Playgroud) 我尝试运行此 gradle 任务:
task resources_cleaner_bl(type: JavaExec) {
classpath sourceSets.main.runtimeClasspath
systemProperties['cleanTarget'] = 'bl'
mainClassName = "com.w.routing.automation.runners.cleaner.ResourcesCleanerRunner"
}
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使用此 Java 代码:
package com.w.routing.automation.runners.cleaner;
public class ResourcesCleanerRunner {
private static IResourcesCleaner resourcesCleaner;
private static Injector injector;
public static void main(String args[]) {
init();
String cleanTarget = System.getProperty("cleanTarget");
switch (cleanTarget) {
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但我收到此错误:
15:48:06.532 [ERROR] [org.gradle.BuildExceptionReporter] FAILURE: Build failed with an exception.
15:48:06.533 [ERROR] [org.gradle.BuildExceptionReporter]
15:48:06.549 [ERROR] [org.gradle.BuildExceptionReporter] * What went wrong:
15:48:06.549 [ERROR] [org.gradle.BuildExceptionReporter] Execution failed for task ':resources_cleaner_bl'.
15:48:06.549 [ERROR] [org.gradle.BuildExceptionReporter] > No …
Run Code Online (Sandbox Code Playgroud) 我有两个jenkins项目
1)一个轮询git repo的人
2)第二个触发java应用程序
我想配置(1)仅对特定文件进行轮询,所以我在"包含区域"下进行了轮询.但是,我看到在回购中的每次更改后都会触发项目,而不仅仅是在更改特定文件时.
有谁经历过同样的经历?
其他工作?