Android JSON解析

最新推荐文章于 2025-09-25 09:19:44 发布

原创最新推荐文章于 2025-09-25 09:19:44 发布 · 496 阅读

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本文通过一个具体的示例展示了如何使用Java解析包含多种编程语言及其IDE的JSON数据，并将解析后的信息展示在界面上。文章详细介绍了从JSON字符串中提取数据的过程，并提供了完整的代码实现。

String json = "{" +
                "\"languages\" : [" +
                "{\"id\":1,\"ide\":\"Eclipse\",\"name\":\"Java\"}," +
                "{\"id\":2,\"ide\":\"XCode\",\"name\":\"Swift\"}," +
                "{\"id\":3,\"ide\":\"Visual Studio\",\"name\":\"C#\"}" +
                "]," +
                "\"cat\" : \"it\"" +
                "}";
        try {
            JSONObject root = new JSONObject(json);
            String all = "";
            String cat = "cat = " + root.getString("cat") + "\n";
            all = all + cat;
            JSONArray array = root.getJSONArray("languages");
            for (int i = 0;i < array.length();i++) {
                JSONObject lan = array.getJSONObject(i);
                String sep = "-------------------------" + "\n";
                String id = "id = " + lan.getInt("id") + "\n";
                String name = "name = " + lan.getString("name") + "\n";
                String ide = "ide=" + lan.getString("ide") + "\n";
                all = all + sep + id + name + ide;
            }
            tv = (TextView)findViewById(R.id.all);
            tv.setText(all);
        } catch(JSONException e) {
            Toast.makeText(MainActivity.this,"error",Toast.LENGTH_LONG).show();
        }