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不带参数
第一种
public class SingleCase private constructor() {
private object Holder { val INSTANCE = SingleCase () }
companion object {
val instance: SingleCase by lazy { Holder.INSTANCE }
}
var b:String? = null
}
第二种
public class SingleCase private constructor() {
companion object {
val instance: = SingleCase ()
}
var b:String? = null
}
第三种
public class SingleCase private constructor() {
companion object {
/*单例*/
@Volatile
private var INSTANCE: SingleCase ? = null
/*获取单例*/
val instance: SingleCase
get() {
if (INSTANCE == null) {
synchronized(SingleCase ::class.java) {
if (INSTANCE == null) {
INSTANCE = SingleCase ()
}
}
}
return INSTANCE!!
}
}
}
...
带参数
class SingleCase private constructor(str: String) {
var string: String = str;
companion object {
@Volatile
var instance: SingleCase ? = null
fun getInstance(c: String): SingleCase {
if (instance == null) {
synchronized(SingleCase ::class) {
if (instance == null) {
instance = SingleCase (c)
}
}
}
return instance!!
}
}
}
总结
这些也只是我在开发过程中发现和总结的东西，如果谁有更好的方法记得留言或者邮箱（1732685009@qq.com）
版权声明：本文为原创文章，未经允许不得转载。
