Java 此处不允许使用数组初始值设定项
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Array initializer is not allowed here
提问by Abdurakhmon
I am working on Android project and I am getting an error which I cannot understand:
我正在处理 Android 项目，但遇到一个我无法理解的错误：
Array initializer is not allowed here
此处不允许使用数组初始值设定项
I tried to simplify my code and it comes down to this
我试图简化我的代码，归结为这个
public class MainActivity extends Activity{
int pos = {0, 1, 2};
@Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
pos = {2, 1, 0};
}
}
What is going on here?
这里发生了什么？
采纳答案by Jayanth
You should use
你应该使用
pos = new int[]{1,2,3};
You can only use the abbreviated syntax int[] pos = {0,1,2};at variable initialization time.
您只能int[] pos = {0,1,2};在变量初始化时使用缩写语法。
private int[] values1 = new int[]{1,2,3,4};
private int[] values2 = {1,2,3,4}; // short form is allowed only at variable initialization
回答by Robert Hume
Your initialization statement is wrong: you must add square bracketsto declare an array (and here you can omit the newkeyword because you're declaring and initializing the variable at the same time):
你的初始化语句是错误的：你必须添加方括号来声明一个数组（在这里你可以省略new关键字，因为你同时声明和初始化变量）：
int[] pos = { 0, 1, 2 };
In the onCreatemethod, you can't omit the newkeywordbecause the variable was already declared, so you have to write:
在onCreate方法中，不能省略new关键字，因为变量已经声明了，所以必须写：
pos = new int[] { 2, 1, 0 };
You can read the Oracle documentationand the Java Language Specsfor more details.
回答by Sai Gopi N
use the following syntax to declare/initialize and empty array, and then populated it with data:
使用以下语法声明/初始化和空数组，然后用数据填充它：
String[] menuArray = {};
menuArray = new String[]{"new item","item 2"};
回答by A. Abdullah
This is a compile-time error Illegal Initializer for int. You could solve this problem by adding square braces after your variable's data type like this:
这是一个编译时错误 Illegal Initializer for int。您可以通过在变量的数据类型后添加方括号来解决这个问题，如下所示：
int[] pos = {0, 1, 2};
