case R.id.huancun:
try {
String s = size();
huancun.setText("当前缓存："+s);
} catch (Exception e) {
e.printStackTrace();
}
break;
case R.id.clear:
qingchu(SheZhi.this);
String s = null;
try {
s = size();
} catch (Exception e) {
e.printStackTrace();
}
huancun.setText("当前缓存："+s);
break;
}
}
private static void qingchu(Context context) {
delete(context.getCacheDir());
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
delete(context.getExternalCacheDir());
}
}
private static boolean delete(File cacheDir) {
if (cacheDir != null && cacheDir.isDirectory()) {
String[] children = cacheDir.list();
for (int i = 0; i < children.length; i++) {
boolean success = delete(new File(cacheDir, children[i]));
if (!success) {
return false;
}
}
}
return cacheDir.delete();
}
public String size()throws Exception{
long cachesize = getFolderSize(this.getCacheDir());
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
cachesize += getFolderSize(this.getExternalCacheDir());
}
return getFormatSize(cachesize);
}
private static long getFolderSize(File file)throws Exception {
if (!file.exists()) {
return 0;
}
long size = 0;
try {
File[] files = file.listFiles();
for (int i = 0; i < files.length; i++) {
// 如果下面还有文件
if (files[i].isDirectory()) {
size = size + getFolderSize(files[i]);
} else {
size = size + files[i].length();
}
}
} catch (Exception e) {
e.printStackTrace();
}
return size;
}
public static String getFormatSize(double size) {
double kiloByte = size / 1024;
if (kiloByte < 1) {
return "0K";
}
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";
}
ImageLoader清除缓存:
public static void initImageLoader(Context context) {
String s = context.getCacheDir().getPath()+"/SWJ";
//创建配置ImageLoader(所有的选项都是可选的,只使用那些你真的想定制)，这个可以设定在APPLACATION里面，设置为全局的配置参数
ImageLoaderConfiguration config = new ImageLoaderConfiguration
.Builder(context)
.threadPoolSize(3)//线程池内加载的数量
.denyCacheImageMultipleSizesInMemory()//.memoryCache(new UsingFreqLimitedMemoryCache(2 * 1024 * 1024)) // You can pass your own memory cache implementation你可以通过自己的内存缓存实现
.memoryCacheSize(2 * 1024 * 1024)
.diskCacheSize(50 * 1024 * 1024)
.diskCacheFileNameGenerator(new Md5FileNameGenerator())//将保存的时候的URI名称用MD5 加密
.tasksProcessingOrder(QueueProcessingType.LIFO)
.diskCache(new UnlimitedDiskCache(new File(s)))
//自定义缓存路径//.imageDownloader(new BaseImageDownloader(context, 5 * 1000, 30 * 1000)) // connectTimeout (5 s), readTimeout (30 s)超时时间
.build();
ImageLoader.getInstance().init(config);//全局初始化此配置
}
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