Question

我尝试了两种方法

方法1

private void CopyAssets() {
 AssetManager assetManager = getAssets();
String[] files = null;
try {
    files = assetManager.list("myfoldername");
} catch (IOException e) {
    Log.e("tag", e.getMessage());
}

for(String filename : files) {

    InputStream in = null;
    OutputStream out = null;
    try {
        RootTools.remount("/system/app/", "rw");
        in = assetManager.open("myfoldername/"+filename);
        out = new FileOutputStream("/system/app/" + filename);
                copyFile(in, out);
        in.close();
        in = null;
        out.flush();
        out.close();
        out = null;
    } catch(Exception e) {
        Log.e("tag", e.getMessage());
    }
}
}
private void copyFile(InputStream in, OutputStream out) throws IOException {
    byte[] buffer = new byte[1024];
    int read;
    while((read = in.read(buffer)) != -1){
        out.write(buffer, 0, read);
    }
}

在上面的方法中我得到 / system / app / filename：open failed：EROFS（只读文件系统）错误

方法2：

private void method_to_copy(String app,String localFolder) 
{
AssetManager assetManager = getAssets();
    String[] files = null;
    try {
         files = assetManager.list(localFolder);
        for(int i=0;i<files.length;i++){
            RootTools.remount("/system/app/", "rw");
            Runtime.getRuntime().exec("su cat " + "localFolder/" + files[i] + "  > " + "/system/" + systemFolder+"/"+  files[i] );
        }


    } catch (IOException e) {
        Log.w("tag", e.getMessage());
    }

 }

使用此方法复制文件但损坏

注意：我先把设备扎根了 2.我正在使用根工具库来重新安装系统文件夹rw权限

如何在root设备中将资产文件夹中的文件复制到android系统文件夹中？

0 个答案: