Question

我有一个项目在较新的设备和API级别上运行得非常好，但是，我在模拟器上遇到了一些问题。当我在模拟器上加载应用程序时，我遇到了这个问题：

02-22 18:36:11.584: W/dalvikvm(652): VFY: unable to resolve exception class 872 (Lcom/google/zxing/WriterException;)
02-22 18:36:11.584: W/dalvikvm(652): VFY: unable to find exception handler at addr 0x7da
02-22 18:36:11.584: W/dalvikvm(652): VFY:  rejected Lcom/example/myapp/Card;.getFrontView (Landroid/content/Context;)Landroid/widget/LinearLayout;
02-22 18:36:11.584: W/dalvikvm(652): VFY:  rejecting opcode 0x0d at 0x07da
02-22 18:36:11.584: W/dalvikvm(652): VFY:  rejected Lcom/example/myapp/Card;.getFrontView (Landroid/content/Context;)Landroid/widget/LinearLayout;
02-22 18:36:11.584: W/dalvikvm(652): Verifier rejected class Lcom/example/myapp/Card;

然后导致java.lang.VerifyError类明显Card。

问题出现在WriterException类，但该类只是：

/*
 * Copyright 2008 ZXing authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.zxing;

/**
 * A base class which covers the range of exceptions which may occur when encoding a barcode using
 * the Writer framework.
 *
 * @author dswitkin@google.com (Daniel Switkin)
 */
public final class WriterException extends Exception {

  public WriterException() {
  }

  public WriterException(String message) {
    super(message);
  }

  public WriterException(Throwable cause) {
    super(cause);
  }

}

也许我错过了为什么这会导致较旧的API级别出现问题，但这就是我在这里问这个问题的原因！我很欣赏SO的集体和大众知识。

编辑：

我尝试通过在类中更深层次的处理来删除抛出的WriterException。这阻止了我上面列出的问题（仍然不确定原因）。但是，出现了一个新问题！

我认为这可能与我的图书馆没有正确阅读有关。我有一个用户库，里面有ZXing core.jar。 .jar列出了每个类，并将打开所有类，但我得到了：

02-22 18:56:49.564: W/dalvikvm(688): VFY: unable to find class referenced in signature (Lcom/google/zxing/BarcodeFormat;)
02-22 18:56:49.604: E/dalvikvm(688): Could not find class 'com.google.zxing.EncodeHintType', referenced from method Barcode.BarcodeGenerator.encodeAsBitmap
02-22 18:56:49.604: W/dalvikvm(688): VFY: unable to resolve const-class 869 (Lcom/google/zxing/EncodeHintType;) in LBarcode/BarcodeGenerator;
02-22 18:56:49.604: D/dalvikvm(688): VFY: replacing opcode 0x1c at 0x0011
02-22 18:56:49.604: E/dalvikvm(688): Could not find class 'com.google.zxing.MultiFormatWriter', referenced from method Barcode.BarcodeGenerator.encodeAsBitmap
02-22 18:56:49.604: W/dalvikvm(688): VFY: unable to resolve new-instance 870 (Lcom/google/zxing/MultiFormatWriter;) in LBarcode/BarcodeGenerator;

现在在我的警告中。我真的很难受这一切......

Here is a screenshot of the User Library, called ZXing, that I have added to my project's Java Build Path > Libraries.

Answer 1

这与WriterException无关，您不必修改代码。图书馆本身很好。你可以看到实际上很多类都缺失了，可能都是这些类。您实际上并未包含该库。既然你说你重新包装它，那就是问题所在。这些课程不在.jar正确，或者您可能在.jar中将其作为.jar包含在内。

无法解决异常类：ZXing

1 个答案: