Why are UniApp buttons not sensitive to touch? How to deal with it?

Recently, many UniApp developers have complained about a common problem: the buttons are not very sensitive to touch. In mobile apps, buttons are one of the primary ways users interact with the app. A less responsive button can create an unpleasant experience for users and even reduce app usage. So, why are the UniApp buttons less responsive to touch? What are the solutions?

First of all, UniApp uses WebView technology rather than native development. WebView technology essentially executes JavaScript code on the mobile side and implements various parts of the application on the user interface. Because WebView relies on system resources such as CPU and memory, and needs to continuously execute JavaScript code, there will be a certain response delay. This means that in the application, it usually takes a while for the response to complete. This is also one of the reasons why the buttons in UniApp are not very touch sensitive.

Secondly, UniApp’s CSS style library uses the -webkit-tap-highlight-color attribute by default. This attribute is a special effect of mobile browsers, which will cause a translucent highlight effect to appear when the user lightly touches an element. Although this effect can increase the visibility of the user's click, it will also cause a certain delay after the click event is triggered.

So, how do we solve the problem that the buttons in UniApp are not too sensitive to touch?

1. Avoid frequent JavaScript operations

In UniApp, we recommend avoiding frequent JavaScript operations as much as possible. When encapsulating components, it is recommended to combine some complex operations into one asynchronous request. This can reduce the execution time of JavaScript and also reduce the time the user waits.

2. Use CSS style to set button highlight effect

In CSS style, you can use the following attributes to customize the button highlight effect:

- webkit-tap-highlight-color: transparent;
-webkit-tap-highlight-color: rgba(0,0,0,0);

This can cancel the highlighting effect when the button is touched. Further improve button response speed.

3. Use v-on:touchstart instead of v-on:click

In UniApp, we recommend replacing the v-on:click event with v-on:touchstart event. This is because the touchstart event responds faster on the mobile side and can avoid the 300ms delay of the click event.

In general, the UniApp button touch sensitivity is caused by the WebView technology and related properties in the CSS style library. However, we can improve the response speed of the button, reduce user waiting time, and improve the user experience of the application by avoiding frequent JavaScript operations, using CSS styles to set the button highlight effect, and replacing the click event with the touchstart event.

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