本文实例讲述了 Android 7.0开发获取存储设备信息的方法。分享给大家供大家参考，具体如下：
Android 7.0开发相较之前有不少改进，具体可参考前面的文章Android7.0版本影响开发的改进分析，这里简单总结一下Android 7.0针对存储设备的简单操作方法。
MountPoint
我们通过MountPoint来描述android设备信息
private static class MountPoint {
String mDescription;
String mPath;
boolean mIsExternal;
boolean mIsMounted;
long mMaxFileSize;
long mFreeSpace;
long mTotalSpace;
}
实现mMountPathList
private final CopyOnWriteArrayList <MountPoint> mMountPathList = new CopyOnWriteArrayList<MountPoint>();
public void init(Context context) {
mStorageManager = (StorageManager) context.getSystemService(Context.STORAGE_SERVICE);
final String defaultPath = getDefaultPath();
LogUtils.d(TAG, "init,defaultPath = " + defaultPath);
if (!TextUtils.isEmpty(defaultPath)) {
mRootPath = ROOT_PATH;
}
mMountPathList.clear();
// check media availability to init mMountPathList
StorageVolume[] storageVolumeList = mStorageManager.getVolumeList();
if (storageVolumeList != null) {
for (StorageVolume volume : storageVolumeList) {
MountPoint mountPoint = new MountPoint();
mountPoint.mDescription = volume.getDescription(context);
mountPoint.mPath = volume.getPath();
mountPoint.mIsMounted = isMounted(volume.getPath());
mountPoint.mIsExternal = volume.isRemovable();
mountPoint.mMaxFileSize = volume.getMaxFileSize();
LogUtils.d(TAG, "init,description :" + mountPoint.mDescription + ",path : "
+ mountPoint.mPath + ",isMounted : " + mountPoint.mIsMounted
+ ",isExternal : " + mountPoint.mIsExternal + ", mMaxFileSize: " + mountPoint.mMaxFileSize);
mMountPathList.add(mountPoint);
}
}
IconManager.getInstance().init(context, defaultPath + SEPARATOR);
}
判断是否是外置sdcard
/**
* This method checks weather certain path is external mount path.
*
* @param path path which needs to be checked
* @return true for external mount path, and false for not external mount path
*/
public boolean isExternalMountPath(String path) {
//LogUtils.d(TAG, "isExternalMountPath ,path =" + path);
if (path == null) {
return false;
}
for (MountPoint mountPoint : mMountPathList) {
if (mountPoint.mIsExternal && mountPoint.mPath.equals(path)) {
return true;
}
}
return false;
}
判断内置存储空间
public boolean isInternalMountPath(String path) {
//LogUtils.d(TAG, "isInternalMountPath ,path =" + path);
if (path == null) {
return false;
}
for (MountPoint mountPoint : mMountPathList) {
if (!mountPoint.mIsExternal && mountPoint.mPath.equals(path)) {
return true;
}
}
return false;
}
更多关于Android相关内容感兴趣的读者可查看本站专题：《Android文件操作技巧汇总》、《Android视图View技巧总结》、《Android编程之activity操作技巧总结》、《Android布局layout技巧总结》、《Android开发入门与进阶教程》、《Android资源操作技巧汇总》及《Android控件用法总结》
希望本文所述对大家Android程序设计有所帮助。
