Android custom camera and analysis source code

Android custom camera and analysis source code

How to use the Android camera:

If we want the application to have camera actions, we must make some statements in the manifest file to let the system know, as follows

The function of action is to declare the type of action to facilitate the use of intent. The function of category is to register without it. Related operations will not work. One way is a simple and crude implementation, as follows

Summary: this benefit is simple and fast, but in today's Android smartphones, many photos are large, and what you get here is just a thumbnail

Another way is to be a little more gentle, and the effect is better. The advantage is that it first stores the photo information in a local temporary file, and then lets ImageView read it in the relevant path, so as to obtain a picture with high definition. as follows

Develop custom cameras

Since the development of custom cameras requires the life of relevant permissions, don't forget to do relevant processing in the list file, as shown below

Then there are the following steps:

The above is the whole idea

The next step is to use the code display of the system camera

(you can directly copy relevant code blocks and add them to your application to realize the function of camera.)

The first is mainactivity

layout

code

Next is the code for customizing the camera

Main interface layout

Layout of resultactivity

code

The first is the customcamera class,

Then the result interface code:

The code comments for the next level have been made in the above code

Summary:

Remember to add dynamic permissions for Android versions above 6.0, otherwise you will report null pointers. Don't forget to add them to the click photo event, otherwise the photo will not respond

The above is the detailed explanation of the example of Android custom camera. If you have any questions, please leave a message or go to the community of this site for communication and discussion. Thank you for reading. I hope it can help you. Thank you for your support to this site!