React-native升級記錄(2): aapt error: resource android:attr/fontVariationSettings not found

        某個Android版本某一天突然build失敗了，很突然，相當突然，又沒過改代碼（這回是真的！！！）。

        有了之前查問題的經驗，先去查issue list， 果然：https://github.com/facebook/react-native/issues/25293，裏面提到了解決辦法，遷移到AndroidX，但是咱還沒準備好。繼續，終於有一個without：根本原因是gms的某個升級導致的，所以咱可以把這個升級踢出代碼。簡書上有個同事的分析：https://www.jianshu.com/p/3730043c1fb8

OK，react-native run android 沒問題了。可是，可是，可是高興的太早了release版本還是出現報錯了。

嘗試了一下升級"react-native-device-info": "^2.1.2",
npm install [email protected]

這個時候編譯出現了找不到符號。因爲引入了28的東東，咋辦：

暴力修改：node_modules/react-native-device-info/android/src/main/java/com/learnium/RNDeviceInfo/RNDeviceModule.java

390   @ReactMethod
391   public void isLocationEnabled(Promise p) {
392       boolean locationEnabled = false;
393
394       /*if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
395         LocationManager mLocationManager = (LocationManager) reactContext.getApplicationContext().getSystemService(Context.LOCATION_SERVICE);
396         locationEnabled = mLocationManager.isLocationEnabled();
397       } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {*/
398       if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
399         int locationMode = Settings.Secure.getInt(reactContext.getContentResolver(), Settings.Secure.LOCATION_MODE, Settings.Secure.LOCATION_MODE_OFF);
400         locationEnabled = locationMode != Settings.Secure.LOCATION_MODE_OFF;
401       } else {
402         String locationProviders = Settings.Secure.getString(reactContext.getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
403         locationEnabled = !TextUtils.isEmpty(locationProviders);
404       }
405
406       p.resolve(locationEnabled);
407   }

 

在android/build.gradle添加：

subprojects {
        afterEvaluate {
            project ->
                if (project.hasProperty("android")) {
                    android {
                        compileSdkVersion = 27
                        buildToolsVersion = "27.0.3"
                    }
                }
        }
    }

PASS！！！