小编use*_*794的帖子

react-native run-android 在设备中,并报告以下错误

在'm2 note - 5.1'上为app安装APK'app-debug.apk':debug 10:53:48 E/1765594925:上传app-debug.apk时出错:未知故障([CDS] close [0])无法使用安装/Users/xiaotian/Desktop/wanme_rn/android/app/build/outputs/apk/app-debug.apk

FAILURE:构建因异常而失败.

• 出了什么问题:任务':app:installDebug'执行失败.

  com.android.builder.testing.api.DeviceException:com.android.ddmlib.InstallException:无法安装所有

• 尝试:使用--stacktrace选项运行以获取堆栈跟踪.使用--info或--debug选项运行以获取更多日志输出.

建筑失败

完整错误日志

03:49:45 E/693346604: Error while uploading app-debug.apk : Unknown failure ([CDS]close[0])
Unable to install /home/niggacode/Projects/Phones/Tokeo/android/app/build/outputs/apk/app-debug.apk
com.android.ddmlib.InstallException: Failed to install all
        at com.android.ddmlib.SplitApkInstaller.install(SplitApkInstaller.java:89)
        at com.android.ddmlib.Device.installPackages(Device.java:904)
        at com.android.builder.testing.ConnectedDevice.installPackages(ConnectedDevice.java:137)
        at com.android.build.gradle.internal.tasks.InstallVariantTask.install(InstallVariantTask.java:134)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:75)
        at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.doExecute(AnnotationProcessingTaskFactory.java:228)
        at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:221)
        at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:210)
        at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:621)
        at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:604)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
        at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)
        at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:66)
        at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
        at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:52)
        at …

在下面的代码中,我没有得到响应,而是得到一个未定义的错误.

fetchData() {
  fetch(Global.user_list)
    .then((response) => {
      if (response.ok) {
        return response.json()
      } 
    })
    .then((data) => {})
    .catch((err)=> {
      alert(err)
    })
}