我在执行意图时收到错误，失败的结果？

Question

我的代码这里是：

@Override 
protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    super.onActivityResult(requestCode, resultCode, data); 
    if (requestCode == 1){ 
     if (resultCode == Activity.RESULT_OK){ 
      Uri selectdFileUri = data.getData(); 
      File file = new File(selectdFileUri.getPath().toString()); 
      Log.e(TAG, "File: "+file.getName()); 
      uploadedFileName = file.getName().toString(); 
      Log.e(TAG, "FILE NAME: "+uploadedFileName); 
      tokens = new StringTokenizer(uploadedFileName,":"); 
      first = tokens.nextToken(); 
      file_1 = tokens.nextToken().trim(); 
      Log.e(TAG, "FILE 1: "+file_1); 
     } 
    } 
} 

错误我得到：

FATAL EXCEPTION: main 
java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { dat=content://com.estrongs.files/storage/sdcard0/WhatsApp/Media/WhatsApp Documents/8763890_133791_1103157248.pdf }} to activity {com.cogent.harikrishna.uploadpdf/com.cogent.harikrishna.uploadpdf.MainActivity}: java.util.NoSuchElementException 
at android.app.ActivityThread.deliverResults(ActivityThread.java:3533) 
at android.app.ActivityThread.handleSendResult(ActivityThread.java:3576) 
at android.app.ActivityThread.access$1100(ActivityThread.java:165) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1421) 
at android.os.Handler.dispatchMessage(Handler.java:107) 
at android.os.Looper.loop(Looper.java:194) 
at android.app.ActivityThread.main(ActivityThread.java:5391) 
at java.lang.reflect.Method.invokeNative(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:525) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 
at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:132) 
at dalvik.system.NativeStart.main(Native Method) 

Answer 1

我引用我发现here

java.util.StringTokenizer中能如果 没有更多的标记或元素，也会抛出NoSuchElementException并调用nextToken（）或nextElement（）方法。

要在使用的StringTokenizer调用 hasMoreTokens（）或hashMoreElements（）过程使用调用 的nextToken（）或nextElement（）之前摆脱这种异常。