Android wont build

[gla5001]

This will not build with android using
compileSdkVersion 28
buildToolsVersion '28.0.3'
and
"react-native": "0.56.1"
"rn-fetch-blob": "^0.10.15"
The project seems to be linked correctly, but building on android produces the following failures

.../testapp/node_modules/rn-fetch-blob/android/src/main/java/com/RNFetchBlob/RNFetchBlob.java:9: error: package android.support.v4.content does not exist
import android.support.v4.content.FileProvider;
                                 ^
.../testapp/node_modules/rn-fetch-blob/android/src/main/java/com/RNFetchBlob/Response/RNFetchBlobFileResp.java:3: error: package android.support.annotation does not exist
import android.support.annotation.NonNull;
                                 ^
.../testapp/node_modules/rn-fetch-blob/android/src/main/java/com/RNFetchBlob/RNFetchBlobBody.java:3: error: package android.support.annotation does not exist
import android.support.annotation.NonNull;
                                 ^
.../testapp/node_modules/rn-fetch-blob/android/src/main/java/com/RNFetchBlob/RNFetchBlobReq.java:11: error: package android.support.annotation does not exist
import android.support.annotation.NonNull;
                                 ^
.../testapp/node_modules/rn-fetch-blob/android/src/main/java/com/RNFetchBlob/Response/RNFetchBlobFileResp.java:80: error: cannot find symbol
        public long read(@NonNull Buffer sink, long byteCount) throws IOException {
                          ^
  symbol:   class NonNull
  location: class RNFetchBlobFileResp.ProgressReportingSource
.../testapp/node_modules/rn-fetch-blob/android/src/main/java/com/RNFetchBlob/RNFetchBlobBody.java:118: error: cannot find symbol
    public void writeTo(@NonNull BufferedSink sink) {
                         ^
  symbol:   class NonNull
  location: class RNFetchBlobBody
.../testapp/node_modules/rn-fetch-blob/android/src/main/java/com/RNFetchBlob/RNFetchBlob.java:112: error: cannot find symbol
            Uri uriForFile = FileProvider.getUriForFile(getCurrentActivity(),
                             ^
  symbol:   variable FileProvider
  location: class RNFetchBlob
.../testapp/node_modules/rn-fetch-blob/android/src/main/java/com/RNFetchBlob/RNFetchBlobReq.java:347: error: cannot find symbol
                public Response intercept(@NonNull Chain chain) throws IOException {
                                           ^
  symbol: class NonNull
.../testapp/node_modules/rn-fetch-blob/android/src/main/java/com/RNFetchBlob/RNFetchBlobReq.java:409: error: cannot find symbol
                public void onFailure(@NonNull Call call, IOException e) {
                                       ^
  symbol: class NonNull
.../testapp/node_modules/rn-fetch-blob/android/src/main/java/com/RNFetchBlob/RNFetchBlobReq.java:426: error: cannot find symbol
                public void onResponse(@NonNull Call call, @NonNull Response response) throws IOException {
                                        ^
  symbol: class NonNull
.../testapp/node_modules/rn-fetch-blob/android/src/main/java/com/RNFetchBlob/RNFetchBlobReq.java:426: error: cannot find symbol
                public void onResponse(@NonNull Call call, @NonNull Response response) throws IOException {
                                                            ^
  symbol: class NonNull
Note: .../testapp/node_modules/rn-fetch-blob/android/src/main/java/com/RNFetchBlob/RNFetchBlobUtils.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
11 errors

This is whats in my build.gradle

project.ext.react = [
    entryFile: "index.js"
]

apply from: "../../node_modules/react-native/react.gradle"

/**
 * Set this to true to create two separate APKs instead of one:
 *   - An APK that only works on ARM devices
 *   - An APK that only works on x86 devices
 * The advantage is the size of the APK is reduced by about 4MB.
 * Upload all the APKs to the Play Store and people will download
 * the correct one based on the CPU architecture of their device.
 */
def enableSeparateBuildPerCPUArchitecture = false

/**
 * Run Proguard to shrink the Java bytecode in release builds.
 */
def enableProguardInReleaseBuilds = false

android {
    compileSdkVersion 28
    buildToolsVersion '28.0.3'

    defaultConfig {
        applicationId "com.mytest.app"
        minSdkVersion 21
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        ndk {
            abiFilters "armeabi-v7a", "x86"
        }
    }
    splits {
        abi {
            reset()
            enable enableSeparateBuildPerCPUArchitecture
            universalApk false  // If true, also generate a universal APK
            include "armeabi-v7a", "x86"
        }
    }
    buildTypes {
        release {
            minifyEnabled enableProguardInReleaseBuilds
            proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
        }
    }
    // applicationVariants are e.g. debug, release
    applicationVariants.all { variant ->
        variant.outputs.each { output ->
            // For each separate APK per architecture, set a unique version code as described here:
            // http://tools.android.com/tech-docs/new-build-system/user-guide/apk-splits
            def versionCodes = ["armeabi-v7a":1, "x86":2]
            def abi = output.getFilter(OutputFile.ABI)
            if (abi != null) {  // null for the universal-debug, universal-release variants
                output.versionCodeOverride =
                        versionCodes.get(abi) * 1048576 + defaultConfig.versionCode
            }
        }
    }
}

dependencies {
    implementation project(':rn-fetch-blob')
    api fileTree(dir: "libs", include: ["*.jar"])
    api "com.android.support:appcompat-v7:27.1.1"
    api "com.facebook.react:react-native:+"  // From node_modules
    api project(':libs:SalesforceReact') // From node_modules
}

// Run this once to be able to run the application with BUCK
// puts all compile dependencies into folder libs for BUCK to use
task copyDownloadableDepsToLibs(type: Copy) {
  from configurations.compile
  into 'libs'
}

I also have gradle.properties

android.useDeprecatedNdk=true
android.useAndroidX=true
android.enableJetifier=true

[greg7gkb]

What was the resolution for this?

[gla5001]

@greg7gkb It’s an issue with AndroidX compatibility and the gradle deps. I have a PR up with fixes #291. But there’s been no movement on it.

I think your options are to either fork the repo and apply those changes or not enable AndroidX in your gradle properties (if that’s the issue you’re seeing)

[evan0204]

gradle.properties . add
android.useDeprecatedNdk=true android.useAndroidX=true android.enableJetifier=true

invalid

Is there any other way to solve it?

[MujtabaFR]

using Jetifier solved the issue for me

npm i -D jetifier
npx jetify