android - new File() 给出 IllegalArgumentException : File contains a path separator

Question

我写了下面的代码来从 SD 卡中删除一个文件:

/**
 * Deletes a file
 * 
 * @param pathToFile
 *            Path to file, eg "/sdcard/test.txt"
 * @throws IOException
 *             Throws if file doesnt exist
 */
public static void deleteFile(String pathToFile) throws IOException {
    File file = new File(pathToFile);
    if (file.delete() == false) {
        throw new IOException();
    }
}

但是，如果我想用这种方法删除一个文件，我会得到这个错误:

E/AndroidRuntime(18085): java.lang.RuntimeException: Unable to create service de.bulling.smstalkvc_offline.InstallerService: java.lang.IllegalArgumentException: File /mnt/sdcard/voicefiles.zip contains a path separator
E/AndroidRuntime(18085):    at android.app.ActivityThread.handleCreateService(ActivityThread.java:2969)
E/AndroidRuntime(18085):    at android.app.ActivityThread.access$3300(ActivityThread.java:125)
E/AndroidRuntime(18085):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2087)
E/AndroidRuntime(18085):    at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(18085):    at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime(18085):    at android.app.ActivityThread.main(ActivityThread.java:4627)
E/AndroidRuntime(18085):    at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(18085):    at java.lang.reflect.Method.invoke(Method.java:521)
E/AndroidRuntime(18085):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
E/AndroidRuntime(18085):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
E/AndroidRuntime(18085):    at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime(18085): Caused by: java.lang.IllegalArgumentException: File /mnt/sdcard/voicefiles.zip contains a path separator
E/AndroidRuntime(18085):    at android.app.ContextImpl.makeFilename(ContextImpl.java:1602)
E/AndroidRuntime(18085):    at android.app.ContextImpl.deleteFile(ContextImpl.java:428)
E/AndroidRuntime(18085):    at android.content.ContextWrapper.deleteFile(ContextWrapper.java:163)
E/AndroidRuntime(18085):    at de.bulling.smstalkvc_offline.InstallerService.onCreate(InstallerService.java:30)
E/AndroidRuntime(18085):    at android.app.ActivityThread.handleCreateService(ActivityThread.java:2959)
E/AndroidRuntime(18085):    ... 10 more

我做错了什么？

Answer 1

您似乎在 InstallerService.java 第 30 行调用了错误的函数。请确保在调用您自己的 deleteFile 之前使用类名:YourClass .deleteFile();

我认为 ContextWrapper.deleteFile() 以某种方式被调用，它不接受路径分隔符。