After two days of tossing and turning, I finally wrote my first fluent app, which almost tortured me into a nervous breakdown

Read headlines recently , Push me every day flutter, say flutter How well , How advanced , How simple , I can't resist the temptation, so I'll try it , Unexpectedly, I fell into a bottomless pit .

Actually flutter The language itself is quite simple and convenient , It's also easy to program Android , The key is that it is extremely difficult to build the environment and compile the program , In the middle bug There are countless pits , Most people have collapsed at this stage , Not to mention programming .

Let's talk about what I can still remember and solve ,

download android studio According to the regular website, you can't , Because it is blocked by the domestic , Put the google.com Change to google.cn

Don't translate the webpage into Chinese when clicking download , Otherwise, the connection cannot be opened ,

When installing virtual Android on the computer for debugging , This is another huge pit , There are countless problems , I have used all kinds of methods ,android studio Just don't recognize virtual machines , Later, I don't remember how I solved it .

It seems to be necessary adb Connect ,

The program is written , How to generate apk Looking for half a day , Originally, I had to use the command line. I had to write it in the directory of the project flutter build apk
A compilation of various errors, various problems , Emerge in endlessly , Using various methods on the Internet, the more solutions, the more chaos , It can't be solved ,

One of them is that the program should be downloaded when compiling gredle package , But the website is blocked , Or the bag is too big , Always fail

Running Gradle task ‘assembleRelease’… Always stay at this step and fail , I used the package under Xunlei to add it to some directories , But all kinds of compilation failed .

There are many other problems android studio The problem of setting , Change the settings to solve ,android studio It's too slow to use too laggy , If you don't need it in the future .

I still remember my last solution is as follows ,

Then the program automatically upgrades and downloads . A bunch of warnings ,

I'll write on the command line flutter build apk
Then it compiles successfully ,

By this time, I have spent more than two days , I don't want to put the program into the virtual machine to debug , Because it's too slow and too laggy , It can kill people , I directly generate apk Copy the file to the mobile phone to run .

Finally I wrote my first flutter app

Feeling or python good , Source files need not be compiled , Just an interpreter , The code is also simple , I'd better go back and play with my python Well , and python The program can also be converted into app