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Javascript: How to check if async operation is still pending / In progress?

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问题 I would like to know if it is somehow possible to check if an asynchronous operation in Javascript is still pending.. Because I am doing a database request on calling a specific URL... While the db call is still in progress, I want to stop any other incoming db-calls (which means, stop any further calls to that URL in case the db-request is still pending). Is that somehow possible? Because the database call takes up to minutes, and I don't want to launch another database-call while the first

Javascript: How to check if async operation is still pending / In progress?

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How to enable “Transition Animation Scale” in “Developer Options” programmatically ?

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问题 I have some animation transitions for my activities. So when an activity starts, it comes up with some fade animations. Here is the code: Intent intent = new Intent(this, NextActivity.class); startActivity(intent); overridePendingTransition (android.R.anim.fade_in, android.R.anim.fade_out); The Problem is that, these animations will not run when "Transition Animation Scale" in "Developer Options" is off. So I'm searching for a way to enable this feature programmatically to ensure that my

How to enable “Transition Animation Scale” in “Developer Options” programmatically ?

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I have some animation transitions for my activities. So when an activity starts, it comes up with some fade animations. Here is the code: Intent intent = new Intent(this, NextActivity.class); startActivity(intent); overridePendingTransition (android.R.anim.fade_in, android.R.anim.fade_out); The Problem is that, these animations will not run when "Transition Animation Scale" in "Developer Options" is off. So I'm searching for a way to enable this feature programmatically to ensure that my animations shown. Is There a way to set "Transition Animation Scale" to "Animation scale 1x"? Milad

How to perform a fade animation on Activity transition?

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I am codifiying a transition effect between my logo activity and my Main activity, but I have the problem that before vanish the activity move to top: <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:shareInterpolator="false" > <alpha android:duration="2000" android:fromAlpha="0.0" android:toAlpha="1.0" > </alpha> </set> How could I improve this code to get only a vanish effect? You could create your own .xml animation files to fade in a new Activity and fade out the current Activity : fade_in.xml <?xml version="1.0" encoding="utf-8

How to perform a fade animation on Activity transition?

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问题 I am codifiying a transition effect between my logo activity and my Main activity, but I have the problem that before vanish the activity move to top: <?xml version=\"1.0\" encoding=\"utf-8\"?> <set xmlns:android=\"http://schemas.android.com/apk/res/android\" android:shareInterpolator=\"false\" > <alpha android:duration=\"2000\" android:fromAlpha=\"0.0\" android:toAlpha=\"1.0\" > </alpha> </set> How could I improve this code to get only a vanish effect? 回答1: You could create your own .xml