我已经检查了下面的代码
String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state)) {
Log.d("StatusActivity", "sdcard mounted and writable");
}
else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
Log.d("StatusActivity", "sdcard mounted readonly");
}
else {
Log.d("StatusActivity", "sdcard state: " + state);
}
输出显示
sdcard mounted and writable
但是
Environment.getExternalStorageDirectory().canWrite()
始终返回false。有人可以建议吗? 最佳答案
您需要对应用程序具有WRITE_EXTERNAL_STORAGE权限。此外,如果要编写仅由应用程序使用的文件,则应将其存储在Context.getExternalFilesDir()中,以防止将应用程序的文件传播到整个公共(public)存储中。如果要编写公共(public)文件,则应将其存储在Environment.getExternalStoragePublicDirectory()中。
关于android - Environment.getExternalStorageDirectory()。canWrite()返回false,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/19306485/