我已经从api中获取了数据,并且我希望将小数组显示为单选按钮,因为用户应该只能选择一个。
这是我从网络获取数据的代码:
if (coachName != null && coachId != null) {
nameTV.setText(coachName);
fetchBatches(coachId);
createGroups();
}
在fetchBatches(id)
中,我已经在json响应方法中完成了此操作:
if (response != null) {
Log.d(TAG, "Batches Response:\t" + response.toString());
try {
JSONObject object = new JSONObject(response.toString());
String message = object.getString("message");
JSONArray array = object.getJSONArray("batch_details");
for (int m = 0; m < array.length(); m++) {
JSONObject jsonObject = array.getJSONObject(m);
name_batch = jsonObject.getString("batch_name");
id_batch = jsonObject.getString("batch_id");
batch = new BatchResponse();
batch.setBatchId(id_batch);
batch.setBatchName(name_batch);
list.add(batch);
}
} catch (JSONException e) {
e.printStackTrace();
}
它运行良好,并且创建单选按钮的方法:
radioButtons = new RadioButton[list.size()];
for (int i = 0; i < list.size(); i++) {
radioButtons[i] = new RadioButton(this);
radioButtons[i].setGravity(Gravity.CENTER_HORIZONTAL);
batchGroup.addView(radioButtons[i]);
radioButtons[i].setText(list.get(i).getBatchName());
radioButtons[i].setChecked(false);
}
,但屏幕上没有任何显示。这是每种方法使用的全局变量:
private RadioGroup batchGroup;
private BatchResponse batch;
private List<BatchResponse> list = new ArrayList<>();
private String name_batch, id_batch;
private RadioButton[] radioButtons;
我设置错误吗?我需要这个问题的帮助。谢谢。
答案 0 :(得分:0)
尝试在fetchBatches(coachId)方法中的for循环之后调用createGroups()方法。