mobile CCTV,mobile surveillance,police body worn cameras

标题: BL502客户自己APP切换到外部TF卡存储 [打印本页]

author: besovideo time: 2023-10-12 16:06
标题: BL502客户自己APP切换到外部TF卡存储
File externalFilesDir = Environment.getExternalStorageDirectory();
我插TF后，使用getExternalStorageDirectory数据目录依然是内部的TF卡，有办法存储到外部吗？

author: Arthur time: 2023-10-12 16:12
public static List<StorageInfo> listAvaliableStorage(Context context) {
storages = new ArrayList<StorageInfo>();

StorageManager storageManager = (StorageManager) context.getSystemService(Context.STORAGE_SERVICE);
try {
Class<?>[] paramClasses = {};
Method getVolumeList = StorageManager.class.getMethod(
"getVolumeList", paramClasses);
getVolumeList.setAccessible(true);
Object[] params = {};
Object[] invokes = (Object[]) getVolumeList.invoke(storageManager,
params);
if (invokes != null) {
StorageInfo info = null;
for (int i = 0; i < invokes.length; i++) {
Object obj = invokes[i];
Method getPath = obj.getClass().getMethod("getPath",
new Class[0]);
String path = (String) getPath.invoke(obj, new Object[0]);
info = new StorageInfo(path);

Method isRemovable = obj.getClass().getMethod(
"isRemovable", new Class[0]);
String state = null;
try {
Method getVolumeState = StorageManager.class.getMethod(
"getVolumeState", String.class);
state = (String) getVolumeState.invoke(storageManager,
info.path);
info.state = state;
} catch (Exception e) {
e.printStackTrace();
}
if (info.isMounted()) {
info.isRemoveable = ((Boolean) isRemovable.invoke(obj,
new Object[0])).booleanValue();
storages.add(info);
}
}
}
} catch (NoSuchMethodException | InvocationTargetException | IllegalAccessException | IllegalArgumentException e1) {
e1.printStackTrace();
}
sdCounts = storages.size();
return storages;
}

author: cus6 time: 2023-10-12 16:24

Arthur post on2023-10-12 16:12
public static List listAvaliableStorage(Context context) {
storages = new ArrayList();

info = new StorageInfo(path);
Call requires API level 31 (current min is 26): new android.app.appsearch.StorageInfo

author: cus6 time: 2023-10-12 16:25

cus6 post on2023-10-12 16:24
info = new StorageInfo(path);
Call requires API level 31 (current min is 26): new android.ap ...

BL502使用的Android8.1

author: cus6 time: 2023-10-12 16:36

public class StorageUtil {
public static List<StorageVolume> listAvailableStorage(Context context) {
      ArrayList<StorageVolume> storageVolumes = new ArrayList<>();

      StorageManager storageManager = (StorageManager) context.getSystemService(Context.STORAGE_SERVICE);
      if (storageManager != null) {
         StorageVolume[] volumes = storageManager.getStorageVolumes().toArray(new StorageVolume[0]);
         for (StorageVolume volume : volumes) {
            storageVolumes.add(volume);
         }
      }

      return storageVolumes;
}
}

这个可以

author: Arthur time: 2023-10-12 16:42
你获取到路径就行，这个StorageInfo是我们自己封装的类。

欢迎光临 mobile CCTV,mobile surveillance,police body worn cameras (http://bbs.besovideo.com:8067/)