Android Studio解析Json文件内容

最新推荐文章于 2025-05-18 10:36:18 发布

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最新推荐文章于 2025-05-18 10:36:18 发布

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文章标签： json 移动开发数据库

原文链接：http://www.cnblogs.com/xinyibufang/p/7699031.html

本文介绍了一种在Android环境中从txt文件中读取并解析JSON数据的方法。通过具体代码示例展示了如何使用AssetManager获取资源文件，如何读取并转换JSON数组及对象，并将解析后的数据打印出来。

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1.准备好txt文件，里面放json格式数据

[{"id":1,"name":"北京"},{"id":2,"name":"上海"},{"id":3,"name":"天津"},{"id":4,"name":"重庆"},{"id":5,"name":"香港"},{"id":6,"name":"澳门"},{"id":7,"name":"台湾"},{"id":8,"name":"黑龙江"},{"id":9,"name":"吉林"},{"id":10,"name":"辽宁"},{"id":11,"name":"内蒙古"},{"id":12,"name":"河北"},{"id":13,"name":"河南"},{"id":14,"name":"山西"},{"id":15,"name":"山东"},{"id":16,"name":"江苏"},{"id":17,"name":"浙江"},{"id":18,"name":"福建"},{"id":19,"name":"江西"},{"id":20,"name":"安徽"},{"id":21,"name":"湖北"},{"id":22,"name":"湖南"},{"id":23,"name":"广东"},{"id":24,"name":"广西"},{"id":25,"name":"海南"},{"id":26,"name":"贵州"},{"id":27,"name":"云南"},{"id":28,"name":"四川"},{"id":29,"name":"西藏"},{"id":30,"name":"陕西"},{"id":31,"name":"宁夏"},{"id":32,"name":"甘肃"},{"id":33,"name":"青海"},{"id":34,"name":"新疆"}]

2.解析Json方法

public String getJson(String fileName) {
        StringBuilder stringBuilder = new StringBuilder();
        try {
            AssetManager assetManager = MainActivity.this.getAssets();
            BufferedReader bf = new BufferedReader(new InputStreamReader(assetManager.open(fileName)));
            String line;
            while ((line = bf.readLine()) != null) {
                stringBuilder.append(line);
                Log.d("AAA", line);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return stringBuilder.toString();
    }

3.调用Json解析方法

 String result = getJson("province.txt");

try {
    JSONArray json = new JSONArray(result);
    for(int i=0;i<json.length();i++)
    {
        JSONObject jb=json.getJSONObject(i);
        Log.d("AAA", jb.getString("name"));
        Log.d("AAA",String.valueOf(json.length()));
    }
} catch (JSONException e) {
    e.printStackTrace();
}