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手机存储都有两种,一种是 手机自带的存储,称为internal storage,另外一种用户额外插入的存储,称为removable storage (也就是外置sdcard的部分).
removable storage 的路径一般是 storage/emulated/0/Android/data/com.example.storagetest/files/alarm
internal storage 也有一部分称为 external (也就是内置sdcard的部分) 的,这部分的路径为 /storage/emulated/0
获取内置sdcard路径方法
通过 Context.get....dir或者 Environment.get...dir去获取
获取外置sdcard路径方法
1.String extSdcardPath = System.getenv("SECONDARY_STORAGE");
2.通过StorageManager 来获取。
StorageManager mStorageManager = (StorageManager) mContext.getSystemService(Context.STORAGE_SERVICE);
Class<?> storageVolumeClazz = null;
try {
storageVolumeClazz = Class.forName("android.os.storage.StorageVolume");
Method getVolumeList = mStorageManager.getClass().getMethod("getVolumeList");
Method getPath = storageVolumeClazz.getMethod("getPath");
Method isRemovable = storageVolumeClazz.getMethod("isRemovable");
Object result = getVolumeList.invoke(mStorageManager);
final int length = Array.getLength(result);
for (int i = 0; i < length; i++) {
Object storageVolumeElement = Array.get(result, i);
String path = (String) getPath.invoke(storageVolumeElement);//如果有外置sdcard,那么 sdcard1 就是外置的了。
boolean removable = (Boolean) isRemovable.invoke(storageVolumeElement);
if (is_removale == removable) {
return path;
}
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
return null;
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原文地址:http://www.cnblogs.com/hi0xcc/p/5522629.html