Android gives error "Cannot fit requested classes in a single dex file"

Question

I don't know why but it's impossible to launch my app on my mobile this morning. I get this error message:

Cannot fit requested classes in a single dex file. Try supplying a main-dex list.

# methods: 68061 > 65536 Message{kind=ERROR, text=Cannot fit requested classes in a single dex file. Try supplying a main-dex list.

# methods: 68061 > 65536, sources=[Unknown source file], tool

I'm really new to Android and I don't understand the problem and what I need to do? And why I get this problem now and not before?

Answer 1

Add dependency in build.gradle file:

implementation 'androidx.multidex:multidex:2.0.1' 

In build.gradle's defaultConfig section add:

multiDexEnabled true 

More details here: Error:Cannot fit requested classes in a single dex file.Try supplying a main-dex list. # methods: 72477 > 65536

Answer 2

Running RN 0.62 and this worked for me with successful build.

Update build.gradle

classpath('com.android.support:multidex:1.0.3')

Update defaultConfig

multiDexEnabled true

After those 2 changes, restart the gradle build again.