[英]Accessing the reference of a child class from an abstract parent
I have an abstract class. 我有一个抽象类。 It contains a private class field.
它包含一个私有类字段。 In one of the methods in the private class field, I need to refer to
this
of whatever child class extends the abstract class. 在私有类字段中的一种方法中,无论子类扩展了抽象类,我都需要引用
this
方法。
public abstract class ActivityCrazy extends Activity {
private class FoolClickedButton implements OnClickListener {
public void onClick(View v) {
startActivity(
new Intent(
IMPLEMENTER_OF_ABSTRACT_CLASS.this,
AnotherClass.class
)
}
}
}
How do I properly do this? 如何正确执行此操作?
Before ActivityCrazy was not an abstract class, so I could use ActivitySpecific.this
. 在ActivityCrazy不是抽象类之前,我可以使用
ActivitySpecific.this
。 But now I realized that many classes need the same private FoolClickedButton, so I created this abstract class. 但是现在我意识到许多类都需要相同的私有FoolClickedButton,因此我创建了这个抽象类。 The problem is that FoolClickedButton's onClick method must refer to itself.
问题在于FoolClickedButton的onClick方法必须引用自身。
Before ActivityCrazy was not an abstract class, so I could use ActivitySpecific.this.
在ActivityCrazy不是抽象类之前,我可以使用ActivitySpecific.this。 But now I realized that many classes need the same private FoolClickedButton, so I created this abstract class.
但是现在我意识到许多类都需要相同的私有FoolClickedButton,因此我创建了这个抽象类。 The problem is that FoolClickedButton's onClick method must refer to itself.
问题在于FoolClickedButton的onClick方法必须引用自身。
Have you tried just using ActivityCrazy.this
? 您是否尝试过仅使用
ActivityCrazy.this
?
It should work, and reference the actual instantiated concrete subclass object. 它应该工作,并引用实际的实例化具体子类对象。
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