如何停止按钮处理程序 - Android
当我调用按钮处理程序时，即使处理程序没有完成，应用程序也会在后台继续运行，我如何才能停止这种行为，并回退到线性执行？
qrscan.setOnClickListener( new View.OnClickListener() { //the Button listener
public void onClick(View view) { //the handler
if(initiateScan(activity) == null) //first thing i expect it to execute
initiateSend(activity); //the next thing which should be executed AFTER
}
}
);
When I call a buttonHandler, the app just continues in the background even though the Handler didn't finish, how can I stop this behaviour, and fall back to a linear execution?
qrscan.setOnClickListener( new View.OnClickListener() { //the Button listener
public void onClick(View view) { //the handler
if(initiateScan(activity) == null) //first thing i expect it to execute
initiateSend(activity); //the next thing which should be executed AFTER
}
}
);
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您没有说太多 - 我们需要知道
initiateScan和initiateSend是如何工作的，但听起来initiateScan正在使用startActivity或startActivityForResult去做这件事。如果是这样，您需要确保他们使用
startActivityForResult，并将initiateSend移动到onActivityResult< /code>您的活动的方法。活动是异步实体，您需要使用
onActivityResult回调以您正在寻找的线性方式处理操作。有关详细信息，请阅读此处。
You aren't saying much - we'll need to know how
initiateScanandinitiateSendwork, but it sounds likeinitiateScanis usingstartActivityorstartActivityForResultto do it's thing.If so, you need to ensure they are using
startActivityForResult, and moveinitiateSendto theonActivityResultmethod of your activity.Activities are asynchronous entities and you need to make use of the
onActivityResultcallback to handle actions in the linear manner you are looking for.For more info, read here.