2013.09.09——— android 判断存储卡是否读写

原创于 2013-09-09 15:56:19 发布 · 86 阅读

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#android

本文详细介绍了如何在Android中判断外部存储卡是否可用及是否可读写，包括存储卡的状态检查和权限标志设置。

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2013.09.09——— android 判断存储卡是否读写

boolean mExternalStorageAvailable = false;
boolean mExternalStorageWriteable = false;
String state = Environment.getExternalStorageState();

if (Environment.MEDIA_MOUNTED.equals(state)) {
    // We can read and write the media
    mExternalStorageAvailable = mExternalStorageWriteable = true;
} else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
    // We can only read the media
    mExternalStorageAvailable = true;
    mExternalStorageWriteable = false;
} else {
    // Something else is wrong. It may be one of many other states, but all we need
    //  to know is we can neither read nor write
    mExternalStorageAvailable = mExternalStorageWriteable = false;
}