React Native-在Android上成功构建但应用崩溃

Question

当我使用依赖项构建（> react-native run-android）时，构建成功！但是，当应用程序启动时，它立即崩溃...怎么不知道怎么可能，没有错误，没什么可告诉我为什么应用程序崩溃了...

确保它来自依赖项...

dependencies {
    implementation project(':react-native-intercom')
    implementation "io.intercom.android:intercom-sdk:3.+"

    implementation project(':react-native-onesignal')
    implementation 'com.google.android.gms:play-services-location:+'

    implementation project(':react-native-linear-gradient')
    implementation project(':react-native-i18n')
    implementation fileTree(dir: "libs", include: ["*.jar"])
    implementation "com.facebook.react:react-native:+"
    implementation project(':tipsi-stripe')
    implementation (project(':react-native-maps')) {
        exclude group: 'com.google.android.gms', module: 'play-services-base'
        exclude group: 'com.google.android.gms', module: 'play-services-maps'
    }
    implementation (project(':react-native-camera')) {
        exclude group: "com.google.android.gms"
        exclude group: "com.android.support", module: 'support-v4'
    }
    implementation "com.android.support:appcompat-v7:23.0.1"
    implementation 'com.google.android.gms:play-services-base:10.0.1'
    implementation 'com.google.android.gms:play-services-maps:10.0.1'
    implementation 'com.google.android.gms:play-services-gcm:10.0.1'
}

非常感谢

Answer 1

我现在有完全相同的错误，react 0.59.8（甚至60+）。也许我可以解释一下这一点，因为它真的让我很恼火，因为我无法开发我的应用程序，而是专注于修复与框架相关的错误......所以作为解释：该项目已成功构建。当 cd 到 android 子文件夹并执行时

./gradlew assembleDebug --stacktrace (or similar)

它说构建成功。如果我运行react-native run-android它，它也会成功构建并尝试将文件上传到设备。然后崩溃，没有任何错误。我只是回到了我执行的 shell 中react-native run-android。

npm start有时，在设备上执行并重新加载后，它会被修复，导致 javascript 被构建/转换（或那里发生的任何事情。我不知道。）

有人有同样的问题吗？

有人知道为什么会发生并可以解释吗？

更新：adblogcat *:E 在尝试连接到运行的 Metro 捆绑器时抛出此错误npm start（当它无法运行 npm start 时）

unknown:ReactNative: ... 21 more 09-17 10:34:38.851 29275 29275 E unknown:ReactNative: Caused by: android.system.ErrnoException: isConnected failed: ECONNREFUSED (Connection refused)

我的 package.json：

./gradlew assembleDebug --stacktrace (or similar)

我的 MainApplication.java

{
...
  "scripts": {
    "start": "node node_modules/react-native/local-cli/cli.js start",
    "test": "jest"
  },
  "dependencies": {
    "lodash": "^4.17.11",
    "moment": "^2.24.0",
    "react": "16.8.3",
    "react-native": "0.59.8",
    "react-native-firebase": "^5.3.1",
    "react-native-gesture-handler": "^1.2.1",
    "react-native-image-picker": "^0.28.1",
    "react-native-table-component": "^1.2.0",
    "react-native-vector-icons": "^6.4.2",
    "react-navigation": "^3.11.0",
    "uuid": "^3.3.2"
  },
  "devDependencies": {
    "@babel/core": "^7.4.4",
    "@babel/runtime": "^7.4.4",
    "babel-jest": "^24.8.0",
    "jest": "^24.8.0",
    "metro-react-native-babel-preset": "^0.54.1",
    "react-test-renderer": "16.8.3"
  },
  "jest": {
    "preset": "react-native"
  }
}

android/build.gradle

...

import android.app.Application;

import com.facebook.react.ReactApplication;
import io.invertase.firebase.RNFirebasePackage;
import io.invertase.firebase.auth.RNFirebaseAuthPackage;
import io.invertase.firebase.storage.RNFirebaseStoragePackage;
import io.invertase.firebase.database.RNFirebaseDatabasePackage;
import com.swmansion.gesturehandler.react.RNGestureHandlerPackage;
import com.imagepicker.ImagePickerPackage;
import com.facebook.react.ReactNativeHost;
import com.facebook.react.ReactPackage;
import com.facebook.react.shell.MainReactPackage;
import com.facebook.soloader.SoLoader;

import java.util.Arrays;
import java.util.List;

public class MainApplication extends Application implements ReactApplication {

  private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) {
    @Override
    public boolean getUseDeveloperSupport() {
      return BuildConfig.DEBUG;
    }

    @Override
    protected List<ReactPackage> getPackages() {
      return Arrays.<ReactPackage>asList(new MainReactPackage(), new RNFirebasePackage(), new RNFirebaseAuthPackage(),
          new RNGestureHandlerPackage(), new ImagePickerPackage(), new RNFirebaseStoragePackage(),
          new RNFirebaseDatabasePackage());
    }

    @Override
    protected String getJSMainModuleName() {
      return "index";
    }
  };

  @Override
  public ReactNativeHost getReactNativeHost() {
    return mReactNativeHost;
  }

  @Override
  public void onCreate() {
    super.onCreate();
    SoLoader.init(this, /* native exopackage */ false);
  }
}

android/app/build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    ext {
        buildToolsVersion = "28.0.3"
        minSdkVersion = 16
        compileSdkVersion = 28
        targetSdkVersion = 28
        supportLibVersion = "28.0.0"
    }
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.2'
        classpath 'com.google.gms:google-services:4.2.0'
        
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        mavenLocal()
        google()
        jcenter()
        maven {
            // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
            url "$rootDir/../node_modules/react-native/android"
        }
    }
}

gradle.properties 包含：

android.useAndroidX=true android.enableJetifier=true