Android 7.0开发获取存储设备信息的方法
本文实例讲述了Android7.0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：
Android7.0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Android7.0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
privatestaticclassMountPoint{
StringmDescription;
StringmPath;
booleanmIsExternal;
booleanmIsMounted;
longmMaxFileSize;
longmFreeSpace;
longmTotalSpace;
}
实现mMountPathList
privatefinalCopyOnWriteArrayListmMountPathList=newCopyOnWriteArrayList (); publicvoidinit(Contextcontext){ mStorageManager=(StorageManager)context.getSystemService(Context.STORAGE_SERVICE); finalStringdefaultPath=getDefaultPath(); LogUtils.d(TAG,"init,defaultPath="+defaultPath); if(!TextUtils.isEmpty(defaultPath)){ mRootPath=ROOT_PATH; } mMountPathList.clear(); //checkmediaavailabilitytoinitmMountPathList StorageVolume[]storageVolumeList=mStorageManager.getVolumeList(); if(storageVolumeList!=null){ for(StorageVolumevolume:storageVolumeList){ MountPointmountPoint=newMountPoint(); 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
/**
*Thismethodchecksweathercertainpathisexternalmountpath.
*
*@parampathpathwhichneedstobechecked
*@returntrueforexternalmountpath,andfalsefornotexternalmountpath
*/
publicbooleanisExternalMountPath(Stringpath){
//LogUtils.d(TAG,"isExternalMountPath,path="+path);
if(path==null){
returnfalse;
}
for(MountPointmountPoint:mMountPathList){
if(mountPoint.mIsExternal&&mountPoint.mPath.equals(path)){
returntrue;
}
}
returnfalse;
}
判断内置存储空间
publicbooleanisInternalMountPath(Stringpath){
//LogUtils.d(TAG,"isInternalMountPath,path="+path);
if(path==null){
returnfalse;
}
for(MountPointmountPoint:mMountPathList){
if(!mountPoint.mIsExternal&&mountPoint.mPath.equals(path)){
returntrue;
}
}
returnfalse;
}
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希望本文所述对大家Android程序设计有所帮助。