大佬教程收集整理的这篇文章主要介绍了Android如何从SD卡读取json文件(文本文件),并将数据显示到textview，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
{ "data": [ { "id": "1","title": "Farhan Shah","duration": 10,},{ "id": "2","title": "Noman Shah",{ "id": "3","title": "Ahmad Shah",{ "id": "4","title": "Mohsin Shah",{ "id": "5","title": "Haris Shah",} ] }
这是代码：
File sdcard = Environment.getExternalStorageDirectory(); //Get the text file File file = new File(sdcard,"textarabics.txt"); String UTF8 = "utf8"; int BUFFER_SIZE = 8192; //Read text from file StringBuilder text = new StringBuilder();@H_874_11@
这里有一个起始码：
import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; public class ReadJsonFile { public ReadFile (){ try { File yourFile = new File(Environment.getExternalStorageDirectory(),"path/to/the/file/inside_the_sdcard/textarabics.txt"); FileInputStream stream = new FileInputStream(yourFilE); String jsonStr = null; try { FileChAnnel fc = stream.getChAnnel(); MappedByteBuffer bb = fc.map(FileChAnnel.MapMode.READ_ONLY,fc.size()); jsonStr = Charset.defaultCharset().decode(bb).toString(); } catch(Exception E){ e.printStackTrace(); } finally { stream.close(); } /* String jsonStr = "{\n\"data\": [\n {\n \"id\": \"1\",\n \"title\": \"Farhan Shah\",\n \"duration\": 10\n },\n {\n \"id\": \"2\",\n \"title\": \"Noman Shah\",\n {\n \"id\": \"3\",\n \"title\": \"Ahmad Shah\",\n {\n \"id\": \"4\",\n \"title\": \"Mohsin Shah\",\n {\n \"id\": \"5\",\n \"title\": \"Haris Shah\",\n \"duration\": 10\n }\n ]\n\n}\n"; */ JSONObject jsonObj = new JSONObject(jsonStr); // GetTing data JSON Array nodes JSONArray data = jsonObj.getJSONArray("data"); // looping through All nodes for (int i = 0; i < data.length(); i++) { JSONObject c = data.getJSONObject(i); String id = c.getString("id"); String title = c.getString("title"); String duration = c.getString("duration"); //use > int id = c.geTint("duration"); if you want get an int // tmp hashmap for single node HashMap<String,String> parsedData = new HashMap<String,String>(); // adding each child node to HashMap key => value parsedData.put("id",id); parsedData.put("title",titlE); parsedData.put("duration",duration); // do what do you want on your interface } } catch (Exception E) { e.printStackTrace(); } } }
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />@H_874_11@ @H_874_11@
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