java - Android 应用程序创建文件但找不到它

Question

我遇到了一个问题，导致我无法发布我的应用程序，所以也许您可以提供帮助。我有这个代码来创建并写入文件:

@Override
public void onClick (View view){
    final String memoryString = memory.getText().toString();
    File file = new File(getApplicationContext().getFilesDir(), filename);

    FileOutputStream fos = new FileOutputStream(file);
    if (location != null) {
        String s = location.toString() + " " + memoryString;
        Log.d(null, s);
        if(fos != null) {
            Log.d(null, "fos not null");
            fos.write(s.getBytes());
        } else { 
            Log.d(null, "Output Stream is null");
        }

        fos.close();
        Log.d(null, "file created!");
    }
    } catch (IOException e) {
        e.printStackTrace();
    }

我的日志显示它正在创建该文件。但是当我访问并读取所述文件时，我收到错误，它不存在:

try {
    File memoryFile = new File(filename);

    if(memoryFile.exists()){
        revealMarkers(memoryFile);
        Log.d(null, "revealed");
    } else { 
        Log.d(null, "no file found");
    }
} catch (FileNotFoundException ex) {
    Log.d(null, "file not found");
}

如果可以的话请帮忙，我很困难

Answer 1

也许是这个？

try {
        File memoryFile = new File(getApplicationContext().getFilesDir(), filename);

        if(memoryFile.exists()){
                revealMarkers(memoryFile);
                Log.d(null, "revealed");
        }else{Log.d(null, "no file found");}
    } catch (FileNotFoundException ex) {
        Log.d(null, "file not found");
    }