我使用的是Windows 8.1。同
react-native-cli: 1.0.0和
react-native: 0.31.0
将react-native-maps添加到项目后，我运行了命令react-native upgrade，并为所有问题提供了 Y 。
然后将deps与rnpm link关联，并将更改为MainApplication.java文件。
以下是MainApplication.java的更改：
// Other imports ...
import com.airbnb.android.react.maps.MapsPackage;
public class MainApplication extends Application implements ReactApplication {
private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) {
@Override
protected boolean getUseDeveloperSupport() {
return BuildConfig.DEBUG;
}
@Override
protected List<ReactPackage> getPackages() {
return Arrays.<ReactPackage>asList(
new MainReactPackage(),
new MapsPackage() // I have added this for react-native-maps
);
}
};
@Override
public ReactNativeHost getReactNativeHost() {
return mReactNativeHost;
}
}
现在我在运行命令时遇到错误：react-native run-android
λ react-native run-android
JS server already running.
Running C:\Program Files (x86)\Android\android-sdk/platform-tools/adb reverse tcp:8081 tcp:808
1
Building and installing the app on the device (cd android && gradlew.bat installDebug...
:app:preBuild UP-TO-DATE
:app:preDebugBuild UP-TO-DATE
:app:checkDebugManifest
:app:preReleaseBuild UP-TO-DATE
:react-native-maps:compileLint
:react-native-maps:copyReleaseLint UP-TO-DATE
:react-native-maps:preBuild UP-TO-DATE
:react-native-maps:preReleaseBuild UP-TO-DATE
:react-native-maps:checkReleaseManifest
:react-native-maps:preDebugAndroidTestBuild UP-TO-DATE
:react-native-maps:preDebugBuild UP-TO-DATE
:react-native-maps:preDebugUnitTestBuild UP-TO-DATE
:react-native-maps:preReleaseUnitTestBuild UP-TO-DATE
:react-native-maps:prepareComAndroidSupportAppcompatV72301Library UP-TO-DATE
:react-native-maps:prepareComAndroidSupportRecyclerviewV72301Library UP-TO-DATE
:react-native-maps:prepareComAndroidSupportSupportV42321Library UP-TO-DATE
:react-native-maps:prepareComFacebookFrescoDrawee0110Library UP-TO-DATE
:react-native-maps:prepareComFacebookFrescoFbcore0110Library UP-TO-DATE
:react-native-maps:prepareComFacebookFrescoFresco0110Library UP-TO-DATE
:react-native-maps:prepareComFacebookFrescoImagepipeline0110Library UP-TO-DATE
:react-native-maps:prepareComFacebookFrescoImagepipelineBase0110Library UP-TO-DATE
:react-native-maps:prepareComFacebookFrescoImagepipelineOkhttp30110Library UP-TO-DATE
:react-native-maps:prepareComFacebookReactReactNative0310Library UP-TO-DATE
:react-native-maps:prepareComFacebookSoloaderSoloader010Library UP-TO-DATE
:react-native-maps:prepareComGoogleAndroidGmsPlayServicesBase840Library UP-TO-DATE
:react-native-maps:prepareComGoogleAndroidGmsPlayServicesBasement840Library UP-TO-DATE
:react-native-maps:prepareComGoogleAndroidGmsPlayServicesMaps840Library UP-TO-DATE
:react-native-maps:prepareOrgWebkitAndroidJscR174650Library UP-TO-DATE
:react-native-maps:prepareReleaseDependencies
:react-native-maps:compileReleaseAidl UP-TO-DATE
:react-native-maps:compileReleaseRenderscript UP-TO-DATE
:react-native-maps:generateReleaseBuildConfig UP-TO-DATE
:react-native-maps:generateReleaseAssets UP-TO-DATE
:react-native-maps:mergeReleaseAssets UP-TO-DATE
:react-native-maps:generateReleaseResValues UP-TO-DATE
:react-native-maps:generateReleaseResources UP-TO-DATE
:react-native-maps:mergeReleaseResources UP-TO-DATE
:react-native-maps:processReleaseManifest UP-TO-DATE
:react-native-maps:processReleaseResources UP-TO-DATE
:react-native-maps:generateReleaseSources UP-TO-DATE
:react-native-maps:processReleaseJavaRes UP-TO-DATE
:react-native-maps:compileReleaseJavaWithJavac UP-TO-DATE
:react-native-maps:extractReleaseAnnotations UP-TO-DATE
:react-native-maps:mergeReleaseProguardFiles UP-TO-DATE
:react-native-maps:packageReleaseJar UP-TO-DATE
:react-native-maps:compileReleaseNdk UP-TO-DATE
:react-native-maps:packageReleaseJniLibs UP-TO-DATE
:react-native-maps:packageReleaseLocalJar UP-TO-DATE
:react-native-maps:packageReleaseRenderscript UP-TO-DATE
:react-native-maps:packageReleaseResources UP-TO-DATE
:react-native-maps:bundleRelease UP-TO-DATE
:app:prepareComAndroidSupportAppcompatV72301Library UP-TO-DATE
:app:prepareComAndroidSupportRecyclerviewV72301Library UP-TO-DATE
:app:prepareComAndroidSupportSupportV42321Library UP-TO-DATE
:app:prepareComFacebookFrescoDrawee0110Library UP-TO-DATE
:app:prepareComFacebookFrescoFbcore0110Library UP-TO-DATE
:app:prepareComFacebookFrescoFresco0110Library UP-TO-DATE
:app:prepareComFacebookFrescoImagepipeline0110Library UP-TO-DATE
:app:prepareComFacebookFrescoImagepipelineBase0110Library UP-TO-DATE
:app:prepareComFacebookFrescoImagepipelineOkhttp30110Library UP-TO-DATE
:app:prepareComFacebookReactReactNative0310Library UP-TO-DATE
:app:prepareComFacebookSoloaderSoloader010Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesBase840Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesBasement840Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesMaps840Library UP-TO-DATE
:app:prepareNativeBaseDemoReactNativeMapsUnspecifiedLibrary UP-TO-DATE
:app:prepareOrgWebkitAndroidJscR174650Library UP-TO-DATE
:app:prepareDebugDependencies
:app:compileDebugAidl UP-TO-DATE
:app:compileDebugRenderscript UP-TO-DATE
:app:generateDebugBuildConfig UP-TO-DATE
:app:generateDebugAssets UP-TO-DATE
:app:mergeDebugAssets UP-TO-DATE
:app:generateDebugResValues UP-TO-DATE
:app:generateDebugResources UP-TO-DATE
:app:mergeDebugResources UP-TO-DATE
:app:bundleDebugJsAndAssets SKIPPED
:app:processDebugManifest UP-TO-DATE
:app:processDebugResources UP-TO-DATE
:app:generateDebugSources UP-TO-DATE
:app:processDebugJavaRes UP-TO-DATE
:app:compileDebugJavaWithJavac UP-TO-DATE
:app:compileDebugNdk UP-TO-DATE
:app:compileDebugSources UP-TO-DATE
:app:preDexDebug UP-TO-DATE
:app:dexDebug
Unknown source file : UNEXPECTED TOP-LEVEL EXCEPTION:
Unknown source file : com.android.dex.DexException: Multiple dex files define Landroid/support/v7/appcompat/R$anim;
Unknown source file : at com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:596)
Unknown source file : at com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:554)
Unknown source file : at com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:535)
Unknown source file : at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:171)
Unknown source file : at com.android.dx.merge.DexMerger.merge(DexMerger.java:189)
Unknown source file : at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:502)
Unknown source file : at com.android.dx.command.dexer.Main.runMonoDex(Main.java:334)
Unknown source file : at com.android.dx.command.dexer.Main.run(Main.java:277)
Unknown source file : at com.android.dx.command.dexer.Main.main(Main.java:245)
Unknown source file : at com.android.dx.command.Main.main(Main.java:106)
:app:dexDebug FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:dexDebug'.
> com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException:
Process 'command 'C:\Program Files\Java\jdk1.8.0_102\bin\java.exe'' finished with non-zero exit value 2
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
BUILD FAILED
Total time: 50.673 secs
Could not install the app on the device, read the error above for details.
Make sure you have an Android emulator running or a device connected and have set up your Android development environment:
https://facebook.github.io/react-native/docs/android-setup.html
我不知道这个错误。看到一些类似的问题，但找不到答案。我是React-Native和Android开发的新手，所以我很难理解这些东西。
答案 0 :(得分：24)
这个问题通常来自新组件中的gradle依赖，我可以看到你安装了 react-native-maps
你可以通过清理项目来解决它。
cd android /＆amp;＆amp; ./gradlew clean
cd ..＆amp;＆amp; react-native run-android
答案 1 :(得分：0)
更具体：
在MainApplication.java文件中，更改，
protected boolean getUseDeveloperSupport() { { <-----
在此
public boolean getUseDeveloperSupport() { <-----
让它为我建造，至少
答案 2 :(得分：0)
使用以下步骤
1。）cd android
2。）gradle clean
3。）现在运行项目。
每当模拟器更新时，我的系统都会出现此错误。
答案 3 :(得分：0)
只需使用cmd从项目根目录运行此命令即可
cd android && gradlew clean