What do you want to do first? Can't these two places meet your file reading and writing needs? For application layer applications, there are only these two places. The nexus 5 does not have an external memory card, but it has built-in extended memory, which, like the external memory card, belongs to externalStorage.
Generally, non-rooted mobile phones have built-in sdcard, which can definitely be written. If there is an external sdcard, this is also ok, and the one in your application installation directory is also ok. I won’t say much more after root
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What do you want to do first? Can't these two places meet your file reading and writing needs? For application layer applications, there are only these two places. The nexus 5 does not have an external memory card, but it has built-in extended memory, which, like the external memory card, belongs to externalStorage.
Generally, non-rooted mobile phones have built-in sdcard, which can definitely be written. If there is an external sdcard, this is also ok, and the one in your application installation directory is also ok. I won’t say much more after root
There is also /data/local/tmp