我正在Android Studio中开发Android应用程序.不太清楚出了什么问题.我几天前成功建造了.任何帮助都会很棒.
这是错误:
Error:Execution failed for task ':app:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.
* What went wrong:
Execution failed for task ':app:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.
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这是我的build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "21.1.2"
defaultConfig {
multiDexEnabled true
applicationId "com.tubbs.citychurchob"
minSdkVersion 14
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: …Run Code Online (Sandbox Code Playgroud) 我目前正在做一个实验室,我收到一个奇怪的错误.一切都编译得很好,应用程序运行正常但是当我点击一个名字时,它显示了Twitter提要,但仍然显示了人物的名称,就像将一个视图叠加在另一个视图之上.
这是我的MainActivity代码:
package course.labs.fragmentslab;
import android.app.Activity;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.util.Log;
public class MainActivity extends Activity implements
FriendsFragment.SelectionListener {
private static final String TAG = "Lab-Fragments";
private FriendsFragment mFriendsFragment;
private FeedFragment mFeedFragment;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_activity);
// If the layout is single-pane, create the FriendsFragment
// and add it to the Activity
if (!isInTwoPaneMode()) {
mFriendsFragment = new FriendsFragment();
//TODO 1 - add the FriendsFragment to the fragment_container
FragmentManager fragM = getFragmentManager();
FragmentTransaction …Run Code Online (Sandbox Code Playgroud) 好吧,这很简单.
我需要在特定索引处打印出对象的所有参数.但是,所有对象都显示内存地址.我知道你必须覆盖toString方法.但我不太确定在哪里.
任何帮助都会很棒!
这是我的Employee类代码:
public class Employee {
private String name;
private int age;
private String department;
public String getDept(){
return department;
}//end dept
public void setDept(String dept){
this.department = dept;
}//end
public String getName(){
return name;
}//end name
public void setName(String n){
this.name = n;
}//end
public int getAge(){
return age;
}//end age
public void setAge(int a){
this.age = a;
}//end
public Employee (String n,int age,String dept){
this.name = n;
this.age = age;
this.department = dept;
}//end employee
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} …
假设我有一组Employee对象.
单个员工对象具有以下参数:名称,年龄和部门.
我需要按年龄对Employee对象进行排序.
除了一部分,我知道如何做到这一点.
当我使用compareTo方法时,我需要指定如何对整数进行排序.
如何使它们成为整数或列表数组?
编辑
这是我的代码,以进一步阐明我需要做什么.
public class Company {
public static void main(String [] args){
Employee[] e = new Employee[13];
PrimeAgeChecker p = new PrimeAgeChecker();
Department d = new Department();
e[0] = new Employee("Counting Guru",55,"Accounting");
e[1] = new Employee("Counting Pro",45,"Accounting");
e[2] = new Employee("Counting Savvy",40,"Accounting");
e[3] = new Employee("Counting Novice",25,"Accounting");
e[4] = new Employee("Sales Guru",50,"Marketing");
e[5] = new Employee("Sales Pro",48,"Marketing");
e[6] = new Employee("Sales Savvy",38,"Marketing");
e[7] = new Employee("Hiring Guru",58,"Human Resrouces");
e[8] = new Employee("Hiring Pro",47,"Human …Run Code Online (Sandbox Code Playgroud) 我在这里找到的所有问题都不能完全回答我的问题。
我正在做一个关于 Python 的教程,他正在使用它的旧版本。(前 3.0)
现在他正在显示字符串索引但是,Python 中的语法发生了变化,因此他的代码无效,这里是:
s = '<any string>'
print s[0]
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假设打印 <,但出现语法错误。这是错误。
print name[0]
^
SyntaxError: invalid syntax
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我现在已经尝试了所有我知道的方法来执行此操作,但似乎无法使其正常工作。
有人可以解释我在哪里可以找到正确答案,或者您可以告诉我。