android: How to Clear cash memory in Programmatically

public static void deleteCache(Context context) { 

try { 

File dir = context.getCacheDir(); 

if (dir != null && dir.isDirectory()) 

{ deleteDir(dir);

}

} catch (Exception e) 

{} 

} 

public static boolean deleteDir(File dir) 

{ if (dir != null && dir.isDirectory()) 

{ String[] children = dir.list(); 

for (int i = 0; i < children.length; i++) 

{ boolean success = deleteDir(new File(dir, children[i])); 

if (!success) { return false; } } } 

return dir.delete(); 

}