Android SD卡检测错误

我有这段代码，当SD卡从Android设备上移除时，应该执行这段代码（通过移除，我理解，用户从Android设备菜单或配置中选择

remove

，就像在物理移除卡之前从任何其他系统移除USB设备或SD卡一样）：

应该卸载并移除该卡，但看起来它实际上是在这个过程中安装的

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我做错了什么？

您可以在中找到更多信息

这里有一个关于通过USB检测挂载sd卡的不错的话题

您也可以改用此有用的方法：

static public boolean hasStorage(boolean requireWriteAccess) {
    //TODO: After fix the bug,  add "if (VERBOSE)" before logging errors.
    String state = Environment.getExternalStorageState();
    Log.v(TAG, "storage state is " + state);

    if (Environment.MEDIA_MOUNTED.equals(state)) {
        if (requireWriteAccess) {
            boolean writable = checkFsWritable();
            Log.v(TAG, "storage writable is " + writable);
            return writable;
        } else {
            return true;
        }
    } else if (!requireWriteAccess && Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
        return true;
    }
    return false;
}

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代码时，我删除卡是挂载，但它必须卸载。我用另一个代码解决了这个问题。运行平稳。没问题

    sSDpath = null;
        fileCur = null;


for (String sPathCur : Arrays.asList("ext_card", "external_sd", "ext_sd", "external","extSdCard", "externalSdCard")) // external sdcard
        {
            fileCur = new File("/mnt/", sPathCur);
            if (fileCur.isDirectory() && fileCur.canWrite()) {
                sSDpath = fileCur.getAbsolutePath();

                kartk.setText("Hafıza Kartı Takılı");
                Toast.makeText(getApplicationContext(), "kkkBirinci", Toast.LENGTH_LONG).show();
                break;
            }
        }
        fileCur = null;
        if (sSDpath == null) {

            sSDpath = Environment.getExternalStorageDirectory().getAbsolutePath();

            kartk.setText("Hafıza Kartı Takılı Değil");
            Toast.makeText(getApplicationContext(), "kkkikinci", Toast.LENGTH_LONG).show();
        }

    sSDpath = null;
        fileCur = null;


for (String sPathCur : Arrays.asList("ext_card", "external_sd", "ext_sd", "external","extSdCard", "externalSdCard")) // external sdcard
        {
            fileCur = new File("/mnt/", sPathCur);
            if (fileCur.isDirectory() && fileCur.canWrite()) {
                sSDpath = fileCur.getAbsolutePath();

                kartk.setText("Hafıza Kartı Takılı");
                Toast.makeText(getApplicationContext(), "kkkBirinci", Toast.LENGTH_LONG).show();
                break;
            }
        }
        fileCur = null;
        if (sSDpath == null) {

            sSDpath = Environment.getExternalStorageDirectory().getAbsolutePath();

            kartk.setText("Hafıza Kartı Takılı Değil");
            Toast.makeText(getApplicationContext(), "kkkikinci", Toast.LENGTH_LONG).show();
        }