Question

这是我的从回收视图列表中删除项目的代码。前三行代码可从回收视图中删除该项目。但是，当我再次开始活动时，又出现了已删除的文件，因为它们没有从存储中删除。有人可以帮我吗？如何从存储中删除所选文件？

 private void deleteItem(int index) {

           recordingArrayList.remove(index);
           notifyItemRemoved(index);
           notifyItemRangeChanged(index,recordingArrayList.size());
//remove from storage
           File root = android.os.Environment.getExternalStorageDirectory();
           String path = root.getAbsolutePath() + "/IRadio/Audios";
           File file = new File(path);
           file.delete();

        }

Answer 1

尝试下面的代码

File root = android.os.Environment.getExternalStorageDirectory();
String path = root.getAbsolutePath() + "/IRadio/Audios";
File file = new File(path);
file.delete();
if(file.exists()){
    file.getCanonicalFile().delete();
    if(file.exists()){
        getApplicationContext().deleteFile(file.getName());
    } 
}

确保您的path 确实存在于路径上。

Answer 2

我是这样做的。现在它可以正常工作，并且代码中的所有内部存储文件也已删除。

private void deleteItem(int index) {

           recordingArrayList.remove(index);
           notifyItemRemoved(index);
           notifyItemRangeChanged(index, recordingArrayList.size());

           File root = android.os.Environment.getExternalStorageDirectory();
           String path = root.getAbsolutePath() + "/IRadio/Audios/";
           Log.d("Files", "Path: " + path);
           File directory = new File(path);
           File[] files = directory.listFiles();
           Log.d("Files", "Size: "+ files.length);
           String fileName = files[index].getName();
           String recordingUri = root.getAbsolutePath() + "/IRadio/Audios/" + fileName;
           File myfile = new File(recordingUri);
           myfile.delete();
       }

从存储和回收视图列表中删除所选文件

2 个答案: