Android java.io.FileNotFoundException: open failed: EACCES (Permission denied)
2013-12-26 23:08
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在读写Android SD卡时,出现这个错误的原因是因为没有权限。解决步骤如下:确定你的App的AndroidManifest.xml文件中写有SD卡读写权限,这是必须的:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />如果你的应用需要创建文件或者目录,还需要添加如下权限:
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />确定你的手机的SD卡,可以读,通过如下代码判断:
File sd = Environment.getExternalStorageDirectory();boolean can_write = sd.canWrite();确定你的手机没有连接到电脑,因为SD卡只能被手机访问或者被电脑访问,不能二者同时访问。参考资料:点击打开链接
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