Question

我从JOBB工具创建了一个加密的OBB文件，我正在尝试访问其中的文件，有一些图像＆＃34; image1.jpg，image2.jpg＆＃34;到目前为止，我能够成功安装它：

public void mountExpansion() {
    final StorageManager storageManager  = (StorageManager) this.getSystemService(Context.STORAGE_SERVICE);


    String packageName = "com.nick.app";
    String filePath = Environment.getExternalStorageDirectory()
            + "/Android/obb/" + packageName + "/" + "main."
            + getString(R.string.apk_expansion_version) + "." + packageName + ".obb";
    final File mainFile = new File(filePath);
    if (mainFile.exists()) {
        Log.d("STORAGE", "FILE: " + filePath + " Exists");
    } else {
        Log.d("STORAGE", "FILE: " + filePath + " DOESNT EXIST");
    }

    String key = "123456";
    if (!storageManager.isObbMounted(mainFile.getAbsolutePath())) {
        if (mainFile.exists()) {
            if(storageManager.mountObb(mainFile.getAbsolutePath(), key,
                    new OnObbStateChangeListener() {
                        @Override
                        public void onObbStateChange(String path, int state) {
                            super.onObbStateChange(path, state);
                            Log.d("PATH = ",path);
                            Log.d("STATE = ", state+"");
                            expansionFilePath = storageManager.getMountedObbPath(path);
                            if (state == OnObbStateChangeListener.MOUNTED) {
                                expansionFilePath = storageManager
                                        .getMountedObbPath(path);
                                Log.d("STORAGE","-->MOUNTED");
                                Log.d("NICK","length()"+mainFile.length());
                                Log.d("NICK","getAbsolutePath()"+mainFile.getAbsolutePath());
                                Log.d("NICK","isDirectory()"+mainFile.isDirectory());

                            }
                            else {
                                Log.d("##", "Path: " + path + "; state: " + state);
                            }
                        }
                    }))
            {
                Log.d("STORAGE_MNT","SUCCESSFULLY QUEUED");
            }
            else
            {
                Log.d("STORAGE_MNT","FAILED");
            }

        } else {
            Log.d("STORAGE", "Patch file not found");
        }
    }



}

在我的日志中，我看到州＆＃34; 1＆＃34;从OnObbStateChangeListener返回，表示已成功装入加密的OBB文件。但是在这一点上，我无法访问其中的文件并使用它们。例如，将它们加载到ImageView等等。对于我在这里缺少的内容有任何建议吗？

Answer 1

import UIKit

class DrawLines: UIView {

       // Only override draw() if you perform custom drawing.
    // An empty implementation adversely affects performance during animation.
    override func draw(_ rect: CGRect) {
         //Drawing code
        // context
      let context = UIGraphicsGetCurrentContext()
      CGContextSetLineWidth(context, 3.0)
      CGContextSetStrokeColorWithColor(context, UIColor.purpleColor().cgColor)

      //create a path
      CGContextMoveToPoint(context,0,0)
      CGContextAddLineToPoint(context,250,320)

    }
}

文件对象是obb中所有文件的目录。要访问它们，您可以在其上调用storageManager.mountObb(main.getPath(), null, new OnObbStateChangeListener() { @Override public void onObbStateChange(String path, int state) { super.onObbStateChange(path, state); if (state == MOUNTED) { Toast.makeText(MainActivity.this, "obb mounted", Toast.LENGTH_LONG).show(); File file = new File(storageManager.getMountedObbPath(path)); } else Toast.makeText(MainActivity.this, "mount fail :" + path, Toast.LENGTH_LONG).show(); } });。

从加密的OBB文件中读取文件

1 个答案: