java 关闭另一个班级的活动
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Closing an activity from another class
提问by curlyreggie
I have a question in Android during creating my google-maps application.
在创建我的 google-maps 应用程序期间，我在 Android 中有一个问题。
I've one activity as below
我有一项活动如下
public class MapCallActivity extends MapActivity {
classA class = new classA(this);
classA.callMethod();
}
The classAis defined as below:
的classA定义如下：
public class classA{
public classA(Context context){
this.myContext = context;
}
void callMethod(){
if (isFileValid) {
<do_something...>;
} else {
<call_the_activity's finish() method>;
}
}
}
Is there a way that I can do <call_the_activity's finish() method>so that the MapCallActivitycloses?
有没有一种方法，我可以做<call_the_activity's finish() method>这样的MapCallActivity关闭？
Any help is appreciated!
任何帮助表示赞赏！
回答by Changwei Yao
public class classA{
public classA(Context context){
this.myContext = context;
}
void callMethod(){
if(isFileValid){
}else{
((Activity)myContext).finish();
}
}
}
回答by Ray
What I usually do is to use a receiver within my activity and then trigger a broadcast from class B. Class Agets the broadcast and its onReceivehandles the work. Say finish();
我通常做的是在我的活动中使用接收器，然后从B 类触发广播。 A 类获取广播，其onReceive处理工作。说完成（）；
