How to integrate the touch screen to Android screen?
March 21, 2025
At Shenzhen Xinlilai Touch Technology Co., Ltd., we are committed to the research and production of touch screens panels, LCD touch screens, and touch monitors. As the source factory, we are well aware that many users want to know how touch screens are integrated with Android screens. This article will provide you with a detailed introduction to the basic steps of integrating a touch screen into an Android screen, aiming to enhance the user experience and hopefully be helpful to you.
- 1. Hardware preparation
Firstly, prepare a touch screen that is compatible with Android screens. The type of touch screen (such as capacitive, resistive) should match the interface of the Android screen. We recommend using our Shenzhen Xinlilai capacitive touch screen, which has high quality, sensitive touch, fast response, and supports multi touch. Generally speaking, common interfaces include I2C, SPI, and USB. It is necessary to check if your touch screen interface can connect to the Android screen. Checking whether the size and resolution of the touch screen are consistent with the Android screen is beneficial for presenting the best display effect. This step is simple, but it must be careful!
- 2. Driver installation
The driver program for the touch screen is crucial in the integration process between the touch screen and Android screen. The Android system typically requires specific drivers to recognize and control touch screens. You can obtain the driver from the touch screen manufacturer, or use our Xinlilai capacitive touch screen. We will provide the corresponding driver. Compile the driver program into the Android kernel to ensure that it loads correctly during system startup.
- 3. Configure the Android system
In the Android system, touch screen configuration is mainly implemented through the 'input' subsystem. You need to edit the ` init.rc ` file to add node information for the touch screen device. In addition, modify the 'frameworks/base/services/inputflinger/InputReader. cpp' file to ensure that the system can correctly parse the input signal of the touch screen.
- 4. Testing and Debugging
After completing the above steps, comprehensive testing is required to confirm whether it can be used normally through feedback of the test results. Use the 'getevent' tool on Android to check if the input signal of the touch screen is normal. If problems are found, they can be solved by adjusting the parameters of the driver program or modifying the system configuration file.
By following the above steps, you can successfully integrate the touch screen into your Android screen. Shenzhen Xinlilai Touch Technology Co., Ltd. provides high-quality touch screen products and technical support to help you easily achieve this goal.