Question

我刚刚创建了一个新项目，并添加了一个简单的空协程，以检查一切是否正常。

@Echo Off
setlocal EnableDelayedExpansion
    set _my_Current_Folder=C:\VEHADARTA\Routine_Tasks\T001_Daily_Changes
    Set _FTPServerName=84.95.247.239
    Set _UserName=XXXX
    Set _Password=YYYY
    Set _RemoteFolder=public_html/vehadarta/Batch_Jobs/
    Set _Filename=Daily_Changes.sql
    Set _ScriptFile=ftp1

    call :Put_the_Daily_Changes_sql_file_in_FTP_Server
    pause
    exit

:Put_the_Daily_Changes_sql_file_in_FTP_Server
     >"%_ScriptFile%" Echo verbose
    >>"%_ScriptFile%" Echo open %_FTPServerName%
    >>"%_ScriptFile%" Echo %_UserName%
    >>"%_ScriptFile%" Echo %_Password%
    >>"%_ScriptFile%" Echo cd %_RemoteFolder%
    >>"%_ScriptFile%" Echo lcd %_Current_Folder%
    >>"%_ScriptFile%" Echo prompt
    >>"%_ScriptFile%" Echo binary
    >>"%_ScriptFile%" Echo put %_Filename%
    >>"%_ScriptFile%" Echo quit
    :: Run script
    ftp -s:"%_ScriptFile%"
    Del "%_ScriptFile%"
    exit /b

我崩溃了

class MainActivity : AppCompatActivity(),CoroutineScope {
    lateinit var job: Job
    override val coroutineContext: CoroutineContext
        get() = Dispatchers.Main + job

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        job=Job()
        launch {  }
    }
}

我的build.gradle

Rejecting re-init on previously-failed class java.lang.Class<android.support.v4.view.ViewCompat$OnUnhandledKeyEventListenerWrapper>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/view/View$OnUnhandledKeyEventListener;
2019-01-31 21:06:54.720 11930-11930/com.seed.kotlintest I/zygote64:     at void android.support.v4.view.ViewCompat.setOnApplyWindowInsetsListener(android.view.View, android.support.v4.view.OnApplyWindowInsetsListener) (ViewCompat.java:2203)
2019-01-31 21:06:54.720 11930-11930/com.seed.kotlintest I/zygote64:     at android.view.ViewGroup android.support.v7.app.AppCompatDelegateImpl.createSubDecor() (AppCompatDelegateImpl.java:637)
2019-01-31 21:06:54.720 11930-11930/com.seed.kotlintest I/zygote64:     at void android.support.v7.app.AppCompatDelegateImpl.ensureSubDecor() (AppCompatDelegateImpl.java:518)
2019-01-31 21:06:54.720 11930-11930/com.seed.kotlintest I/zygote64:     at void android.support.v7.app.AppCompatDelegateImpl.setContentView(int) (AppCompatDelegateImpl.java:466)
2019-01-31 21:06:54.720 11930-11930/com.seed.kotlintest I/zygote64:     at void android.support.v7.app.AppCompatActivity.setContentView(int) (AppCompatActivity.java:140)
2019-01-31 21:06:54.720 11930-11930/com.seed.kotlintest I/zygote64:     at void com.seed.kotlintest.MainActivity.onCreate(android.os.Bundle) (MainActivity.kt:16)
2019-01-31 21:06:54.720 11930-11930/com.seed.kotlintest I/zygote64:     at void android.app.Activity.performCreate(android.os.Bundle) (Activity.java:7183)
2019-01-31 21:06:54.720 11930-11930/com.seed.kotlintest I/zygote64:     at void android.app.Instrumentation.callActivityOnCreate(android.app.Activity, android.os.Bundle) (Instrumentation.java:1220)
2019-01-31 21:06:54.720 11930-11930/com.seed.kotlintest I/zygote64:     at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2910)
2019-01-31 21:06:54.720 11930-11930/com.seed.kotlintest I/zygote64:     at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$Ac

你们可以尝试相同的方法。只需创建一个新的空项目并添加空协程

Answer 1

要使用Dispatchers.Main，我们需要向{strong> build.gradle 文件中添加kotlinx-coroutines-android：

implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.1.0'

无法启动协程生成器

1 个答案: