浅谈Glide缓存的大小以及清除缓存

来源：互联网发布：非农数据对石油的影响编辑：程序博客网时间：2024/04/30 17:20

在目前很多图片加载框架的实现中，我们选择了Glide就需要对其有一个深度的了解。在看完别的大神的代码和源码之后，有了以下的感想，给大家提供一个Glide的缓存的工具类。

在开始书写工具类之前，我们应该使用目前版本最高的Glide依赖

compile 'com.github.bumptech.glide:glide:3.7.0'

添加如上依赖之后，新建一个工具类，具体代码如下：

public class GlideHuanCun{private static GlideHuanCun inst;public static GlideHuanCun getInstance() {        if (inst == null) {        inst = new GlideHuanCun();        }        return inst;        }/** * 清除图片磁盘缓存 */public void clearImageDiskCache(final Context context) {        try {        if (Looper.myLooper() == Looper.getMainLooper()) {        new Thread(new Runnable() {@Overridepublic void run() {        Glide.get(context).clearDiskCache();// BusUtil.getBus().post(new GlideCacheClearSuccessEvent());        }        }).start();        } else {        Glide.get(context).clearDiskCache();        }        } catch (Exception e) {        e.printStackTrace();        }        }/** * 清除图片内存缓存 */public void clearImageMemoryCache(Context context) {        try {        if (Looper.myLooper() == Looper.getMainLooper()) { //只能在主线程执行        Glide.get(context).clearMemory();        }        } catch (Exception e) {        e.printStackTrace();        }        }/** * 清除图片所有缓存 */public void clearImageAllCache(Context context) {        clearImageDiskCache(context);        clearImageMemoryCache(context);        String ImageExternalCatchDir=context.getExternalCacheDir()+ ExternalCacheDiskCacheFactory.DEFAULT_DISK_CACHE_DIR;        deleteFolderFile(ImageExternalCatchDir, true);        }/** * 获取Glide造成的缓存大小 * * @return CacheSize */public String getCacheSize(Context context) {        try {        return getFormatSize(getFolderSize(new File(context.getCacheDir() + "/"+ InternalCacheDiskCacheFactory.DEFAULT_DISK_CACHE_DIR)));        } catch (Exception e) {        e.printStackTrace();        }        return "";        }/** * 获取指定文件夹内所有文件大小的和 * * @param file file * @return size * @throws Exception */private long getFolderSize(File file) throws Exception {        long size = 0;        try {        File[] fileList = file.listFiles();        for (File aFileList : fileList) {        if (aFileList.isDirectory()) {        size = size + getFolderSize(aFileList);        } else {        size = size + aFileList.length();        }        }        } catch (Exception e) {        e.printStackTrace();        }        return size;        }/** * 删除指定目录下的文件，这里用于缓存的删除 * * @param filePath filePath * @param deleteThisPath deleteThisPath */private void deleteFolderFile(String filePath, boolean deleteThisPath) {        if (!TextUtils.isEmpty(filePath)) {        try {        File file = new File(filePath);        if (file.isDirectory()) {        File files[] = file.listFiles();        for (File file1 : files) {        deleteFolderFile(file1.getAbsolutePath(), true);        }        }        if (deleteThisPath) {        if (!file.isDirectory()) {        file.delete();        } else {        if (file.listFiles().length == 0) {        file.delete();        }        }        }        } catch (Exception e) {        e.printStackTrace();        }        }        }/** * 格式化单位 * * @param size size * @return size */private static String getFormatSize(double size) {        double kiloByte = size / 1024;        if (kiloByte < 1) {        return size + "Byte";        }        double megaByte = kiloByte / 1024;        if (megaByte < 1) {        BigDecimal result1 = new BigDecimal(Double.toString(kiloByte));        return result1.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "KB";        }        double gigaByte = megaByte / 1024;        if (gigaByte < 1) {        BigDecimal result2 = new BigDecimal(Double.toString(megaByte));        return result2.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "MB";        }        double teraBytes = gigaByte / 1024;        if (teraBytes < 1) {        BigDecimal result3 = new BigDecimal(Double.toString(gigaByte));        return result3.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "GB";        }        BigDecimal result4 = new BigDecimal(teraBytes);        return result4.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "TB";        }        }

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