WebView使用Kotlin时异常IllegalArgumentException

异常出现在为WebView设置监听时候.

• 代码

mDataBinding.wb.setListener(this, object : AdvancedWebView.Listener {
    
    
    override fun onPageStarted(
        url: String,
        favicon: Bitmap
    ) {
    
    
    }
    override fun onPageFinished(url: String) {
    
    
    }
    override fun onPageError(
        errorCode: Int,
        description: String,
        failingUrl: String
    ) {
    
    
    }
    override fun onDownloadRequested(
        url: String,
        suggestedFilename: String,
        mimeType: String,
        contentLength: Long,
        contentDisposition: String,
        userAgent: String
    ) {
    
    
    }
    override fun onExternalPageRequest(url: String) {
    
    }
})

• 异常日志

java.lang.IllegalArgumentException: Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull, parameter favicon
    at xx.xxx.xxxx.xxx.xxx.xxx.....$initListener$1.onPageStarted(Unknown Source:7)
    at im.delight.android.webview.AdvancedWebView$1.onPageStarted(AdvancedWebView.java:468)
    at ic.c(PG:314)
    at An.handleMessage(PG:20)
    at android.os.Handler.dispatchMessage(Handler.java:107)
    at android.os.Looper.loop(Looper.java:214)
    at android.app.ActivityThread.main(ActivityThread.java:7356)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)

• 原因
  上面那段代码是通过java转换为kotlin的,在重写onPageStarted方法时候,favicon: Bitmap参数应少加一个可空符号

override fun onPageStarted(
    url: String,
    favicon: Bitmap
) {
    
    }

改为

override fun onPageStarted(
    url: String,
    favicon: Bitmap?
) {
    
    }