包解析錯誤

因為許可權的問題，所以要在安裝之前加上如下程式碼：

    String path = Environment.getExternalStorageDirectory()+"/download";//此處是你下載的apk存放的資料夾地址
    String permission="666";//許可權
    try {
        String command = "chmod " + permission + " " + path;
        Runtime runtime = Runtime.getRuntime();
        runtime.exec(command);
    } catch (IOException e) {
        e.printStackTrace();
    }