swift2 - Show JSON data in text View in Swift -

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i getting response server 

[{      "images":[{        "title_de":"sdfs",        "title_it":"dsdfs",        "title_fr":"dfsf",        "approved":"true",        "title_ru":"sdsf",        "title_ko":"sdfs",        "title_jp":"sfsdf",        "title_es":"sdfs",        "title_pt":"dfs",        "folder_id":29,        "title_en":"title image",        "title_hi":"sdfss",        "image_used_count":"0",        "updatedtime":"1470641760",        "folder_empty":"false",        "id":115,        "is_folder":"false"    },     {        "title_de":"tests ashdod",        "title_it":"test cv",        "title_fr":"tests asgard",        "approved":"true",        "title_ru":"testvxcv",        "title_ko":"testvcxv",        "title_jp":"tests cv",        "title_es":"testvcxv",        "title_pt":"test cox",        "folder_id":19,        "title_en":"testsds",        "title_hi":"testvxcv",        "image_used_count":"0",        "updatedtime":"1470401264",        "folder_empty":"false",        "id":99,        "is_folder":"false"    }] }]

now want show response on text view , here code 

self.tv_response.text = string(format:"%@", json as! string )

but getting error

could not cast value of type '__nscfarray' (0x1025a8ae0) 'nsstring' (0x101c13b20).

i try 

self.tv_response.text = nsstring(format:"%@", json as! string )

but not working please me ...

your response array can not directly convert string.

self.tv_response.text = "\(json as! nsarray)"

or 

self.tv_response.text = "\(json as! [[string: anyobject]])"

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