Android-SDCardUtil-工具类

packagecommon.library.utils;

importandroid.annotation.SuppressLint;
importandroid.content.Context;
importandroid.os.Environment;
importandroid.os.StatFs;

importjava.io.File;

/*** @Author Liudeli
 * @Describe：SD卡工具类，包含SD卡状态、路径、容量大小
 */
public classSDCardUtil {

    privateSDCardUtil(){}

    /*** 判断SD卡是否可用
     * @return* ture：可用；false：不可用
     */
    public static booleanisSDCardEnable(){
        returnEnvironment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);
    }

    /*** 获取SD卡路径
     * @return* SD卡存在返回正常路径；SD卡不存在返回""
     */
    public staticString getSDCradPath(){
        if(isSDCardEnable()) {
            return Environment.getExternalStorageDirectory().getAbsolutePath() +File.separator;
        } else{
            return "";
        }
    }

    /*** 获取SD卡路径文件
     * @return* SD卡存在返回正常路径；SD卡不存在返回null
     */
    public staticFile getSDCardFile(){
        if(isSDCardEnable()){
            returnEnvironment.getExternalStorageDirectory();
        }else{
            return null;
        }
    }

    /*** 获取SD卡DownloadCache路径
     * @return* SD卡存在返回正常路径；SD卡不存在返回""
     */
    public staticString getSDCardDownloadCachePath(){
        if(isSDCardEnable()){
            return Environment.getDownloadCacheDirectory().getAbsolutePath() +File.separator;
        }else{
            return "";
        }
    }

    /*** 获取SD卡DownloadCache路径文件
     * @return* SD卡存在返回正常路径；SD卡不存在返回null
     */
    public staticFile getSDCardDownloadCacheFile(){
        if(isSDCardEnable()){
            returnEnvironment.getDownloadCacheDirectory();
        }else{
            return null;
        }
    }

    /*** 获取系统存储路径
     * @return* SD卡存在返回正常路径；SD卡不存在返回""
     */
    public staticString getSDCardRootPath(){
        if(isSDCardEnable()){
            return Environment.getRootDirectory().getAbsolutePath() +File.separator;
        }else{
            return "";
        }
    }

    /*** 获取系统存储路径文件
     * @return* SD卡存在返回正常路径；SD卡不存在返回null
     */
    public staticFile getSDCardRootFile(){
        if(isSDCardEnable()){
            returnEnvironment.getRootDirectory();
        }else{
            return null;
        }
    }

    /*** 获取应用程序的/data/data目录
     * @paramcontext
     * @return
     */
    public staticString getDataFilePath(Context context){
        return context.getFilesDir().getAbsolutePath() +File.separator;
    }

    /*** /data/data/PackageName/cache的路径
     * @paramcontext
     * @return
     */
    public staticString getDataCachePath(Context context){
        return context.getCacheDir().getAbsolutePath() +File.separator;
    }

    /*** 获取SD卡大小
     * @return* SD卡存在返回大小；SD卡不存在返回-1
     */@SuppressWarnings("deprecation")
    @SuppressLint("NewApi")
    public static longgetSDCardSize(){
        if(isSDCardEnable()) {
            StatFs statFs = new StatFs(Environment.getExternalStorageDirectory().getAbsolutePath() +File.separator);
            if (android.os.Build.VERSION.SDK_INT < 18) {
                int blockSize =statFs.getBlockSize();
                int blockCount =statFs.getBlockCount();
                return blockSize *blockCount;
            } else{
                long blockSize =statFs.getBlockSizeLong();
                long blockCount =statFs.getBlockCountLong();
                return blockSize *blockCount;
            }
        }
        return -1;
    }

    /*** 获取SD卡可用大小
     * @return* SD卡存在返回大小；SD卡不存在返回-1
     */@SuppressWarnings("deprecation")
    @SuppressLint("NewApi")
    public static longgetSDCardAvailableSize(){
        if(isSDCardEnable()) {
            StatFs statFs = new StatFs(Environment.getExternalStorageDirectory().getAbsolutePath() +File.separator);
            if (android.os.Build.VERSION.SDK_INT < 18) {
                int blockSize =statFs.getBlockSize();
                int blockCount =statFs.getAvailableBlocks();
                return blockSize *blockCount;
            } else{
                long blockSize =statFs.getBlockSizeLong();
                long blockCount =statFs.getAvailableBlocksLong();
                return blockSize *blockCount;
            }
        }
        return -1;
    }

    /*** 获得手机内存总大小
     * @return
     */@SuppressWarnings("deprecation")
    @SuppressLint("NewApi")
    public longgetRomTotalSize() {
        File path =Environment.getDataDirectory();
        StatFs statFs = newStatFs(path.getPath());
        if (android.os.Build.VERSION.SDK_INT < 18) {
            int blockSize =statFs.getBlockSize();
            int blockCount =statFs.getBlockCount();
            return blockSize *blockCount;
        } else{
            long blockSize =statFs.getBlockSizeLong();
            long blockCount =statFs.getBlockCountLong();
            return blockSize *blockCount;
        }
    }

    /*** 获得手机可用内存
     * @return
     */@SuppressWarnings("deprecation")
    @SuppressLint("NewApi")
    public longgetRomAvailableSize() {
        File path =Environment.getDataDirectory();
        StatFs statFs = newStatFs(path.getPath());
        if (android.os.Build.VERSION.SDK_INT < 18) {
            int blockSize =statFs.getBlockSize();
            int blockCount =statFs.getAvailableBlocks();
            return blockSize *blockCount;
        } else{
            long blockSize =statFs.getBlockSizeLong();
            long blockCount =statFs.getAvailableBlocksLong();
            return blockSize *blockCount;
        }
    }
}