获取有参构造和无参构造
基础类
public class Rat {
public Rat(){
go();
}
public Rat(int count){
go(count);
}
private void go(int count) {
Log.i("Rat","hello,你走了有参构造，小白鼠一共"+count+"只");
}
private void go() {
Log.i("Rat","hello,你走了无参构造");
}
}
实现：
var rat:Rat? = null
try {
val clazz: Class<Rat> = Class.forName("com.yirong.myapplication.Rat") as Class<Rat>
// rat = clazz.getDeclaredConstructor().newInstance()//获取无参构造
rat = clazz.getDeclaredConstructor(Int::class.java).newInstance(27)//获取有参构造
}catch (e: ClassNotFoundException){
if (Log.isLoggable(TAG, Log.WARN)) {
Log.w(
TAG, "ClassNotFound"
)
}
} catch (e: InstantiationException) {
Log.w(
TAG, "InstantiationException"
)
} catch (e: IllegalAccessException) {
Log.w(
TAG, "IllegalAccessException"
)
} catch (e: NoSuchMethodException) {
Log.w(
TAG, "NoSuchMethodException"
)
} catch (e: InvocationTargetException) {
Log.w(
TAG, "InvocationTargetException"
)
}
查看日志
10:39:28.206 2207-2207/? I/Rat: hello,你走了无参构造
10:39:28.206 2207-2207/? I/Rat: hello,你走了有参构造，小白鼠一共27只
