Question

我正在从称为“ exchangerates api”的API获取ECB货币数据，以转换应用程序中的货币。从API返回的数据的格式为JSON。

在带有虚拟或USB有线设备的Android Studio上运行时，一切正常。但是，当要在Google Play上发布时，按下转换按钮并调用GetRate()

后，它便崩溃了

我认为它可能会出现，因为清单中没有像其他API一样使用“ API ID”和“密钥”。但是我找不到任何建议或话题。

我什至试图在Google API上创建一个服务帐户并使用它，但这是完全错误的主意，或者我做错了。

API的地址：

我在相关活动中的kotlin代码：

protected fun GetRate(view: View){
    try {
        fromFull = spinFrom.selectedItem.toString()
        toFull = spinTo.selectedItem.toString()
        fromRate = (fromFull as String).substring(0,3)
        toRate = toFull.toString().substring(0,3)
        val url = "https://api.exchangeratesapi.io/latest?base=$fromRate&symbols=$toRate"
        //central bank based api above
        MyAsyncTask().execute(url)
    }catch (ex:Exception){}
}

inner class MyAsyncTask: AsyncTask<String, String, String>(){

    override fun onPreExecute(){
        //Before task start
    }

    override fun doInBackground(vararg params: String?): String {
        try {
            val url = URL(params[0])

            val urlConnet = url.openConnection() as HttpURLConnection
            urlConnet.connectTimeout=7000

            var inString = convertStreamToString(urlConnet.inputStream)
            publishProgress(inString)
        }catch (ex:Exception){}

        return " "
    }

    @SuppressLint("SetTextI18n")
    override fun onProgressUpdate(vararg values: String?) {
        try {
            var json=JSONObject(values[0])
            val rates= json.getJSONObject("rates")
            var curRate = rates.getString(toRate.toString())

            var xRate:Double = curRate.toDouble()
            var xBase = inText.text.toString().toDouble()
            var result = xBase*xRate
            tvExchange.text = "1 "+fromRate+ " = " + "%.2f".format(xRate)+ " " +toRate+ "\n" +
            "%.2f".format(xBase) +" "+fromRate+ " = " +"%.2f".format(result)+ " " +toRate

        }catch (ex:Exception){}
    }

    override fun onPostExecute(result: String?) {
        //after task done
    }
}
fun convertStreamToString(inputStream: InputStream):String{

    val bufferReader= BufferedReader(InputStreamReader(inputStream))
    var line: String
    var allString =""

    try {
        do {
            line=bufferReader.readLine()
            if (line!=null){
                allString+=line
            }
        }while (line!=null)
         inputStream.close()
    }catch (ex:Exception){}
    return allString
}

Google Play控制台-> Android Vitals->崩溃报告；

java.lang.IllegalStateException: 
  at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.resolveMethod (AppCompatViewInflater.java:424)
  at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick (AppCompatViewInflater.java:381)
  at android.view.View.performClick (View.java:6256)
  at android.view.View$PerformClick.run (View.java:24708)
  at android.os.Handler.handleCallback (Handler.java:789)
  at android.os.Handler.dispatchMessage (Handler.java:98)
  at android.os.Looper.loop (Looper.java:164)
  at android.app.ActivityThread.main (ActivityThread.java:6565)
  at java.lang.reflect.Method.invoke (Native Method)
  at com.android.internal.os.Zygote$MethodAndArgsCaller.run (Zygote.java:240)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:767)

更新；我解决了这个问题！我不知道哪个更改有效，所以下面进行了更改：

buttConvert.setOnClickListener {
            try {
                fromFull = spinFrom.selectedItem.toString()
                toFull = spinTo.selectedItem.toString()
                fromRate = (fromFull as String).substring(0,3)
                toRate = toFull.toString().substring(0,3)
                val url = "https://api.exchangeratesapi.io/latest?base=$fromRate&symbols=$toRate"

                MyAsyncTask().execute(url)
            }catch (ex:Exception){}
        }

XML： <Button> -----> <android.support.v7.widget.AppCompatButton>

android:autofillHints=""

应用程序可在开发设备上使用，但从Google Play商店下载后无法使用

0 个答案: