getTotalDiskCapacity() do not get the same value as ”System Setting“ In android

In Android, getTotalDiskCapacity() do not get the right value。 So I change the Java code as follow:

public Long getTotalDiskCapacity() {
    try {
      StatFs root = new StatFs(Environment.getRootDirectory().getAbsolutePath());
      return root.getBlockCountLong() * root.getBlockSizeLong();
    } catch (Exception e) {
      e.printStackTrace();
    }
    return null;
  }

But the function returns 4.3GB, but the System Setting show 8.0GB. The Android device is “SM-T719C - 6.0.1”. Can anyone tell me why? Thanks! @crafterm @doochik @DracoBlue @stevemoser @jeveloper

[mikehardy]

@machour this one is actually not fixed - I fixed integer overflow with a very focused change, and this one will need a separate change to use different native APIs in a thoughtful way. I didn’t attempt it in the integer overflow fix

[rndi-bot]

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