Android Studio绑定下拉框数据详解
效果显示:
1、页面xml代码(项目的代码,直接复制会有错,自己修改一下就好)
<TextView
android:id="@+id/consultation_tv_section"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/consultation_et_doctor"
android:layout_alignLeft="@+id/consultation_tv_phone"
android:layout_alignStart="@+id/consultation_tv_phone"
android:layout_marginBottom="8dp"
android:text="挂号科室:"
android:textColor="@color/black"
android:textSize="18sp"
android:textStyle="bold" />
<Spinner
android:id="@+id/consultation_et_section"
android:layout_width="260dp"
android:layout_height="40dp"
android:layout_alignLeft="@+id/consultation_et_phone"
android:layout_alignStart="@+id/consultation_et_phone"
android:layout_below="@+id/consultation_et_phone"
android:layout_marginTop="22dp"
android:background="@drawable/input_bg"
android:ems="10"
android:inputType="textPersonName"
android:paddingLeft="15dp"
android:paddingRight="15dp"
android:spinnerMode="dialog" />
2、java创建自定义参数
Spinner consultation_et_section;//挂号科室:
3、获取选择控件(Spinner)
consultation_et_section = (Spinner) findViewById(R.id.consultation_et_section);
4、获取JSON数据和绑定数据,可以参考前一篇文章
(1)、创建自定义参数
List<String> listMemDoctorData = null;
(2)、获取数据和绑定数据
/**
* 获取JSON医生信息数据
*/
public void findDoctorData(int sectionId){
AsyncHttpClient client = new AsyncHttpClient();
client.get(AbAppConfig.DATA_URL + "appGVConsultation/findDoctorData?sectionId="+sectionId, null, new AsyncHttpResponseHandler() {
@Override
public void onSuccess(int statusCode, Header[] headers, byte[] responseBody) {
try {
JSONObject object = new JSONObject(new String(responseBody));//获取json数据
JSONArray jsonArray = object.getJSONArray("obj");//获取数据集名称为obj的数据
Log.d("jsonArray数据输出:", String.valueOf(jsonArray));
listMemDoctor = new ArrayList<>();
for (int i = 0; i < jsonArray.length();i++) {
MemDoctor doctor = MemDoctor.doctorData(jsonArray.getJSONObject(i));//把数据存在novels集合中
if (doctor != null){
listMemDoctor.add(doctor);
}
}
if (jsonArray.length() > 0){
listMemDoctorData = new ArrayList<>();
doctor_id = listMemDoctor.get(0).id;//获取第一个医生的ID
for (int i = 0; i < listMemDoctor.size(); i++){
MemDoctor section = listMemDoctor.get(i);
listMemDoctorData.add(section.doctorName);
}
//建立 Adapter并且绑定数据源
ArrayAdapter<String> arrayAdapter = new ArrayAdapter<>(GV_Consultation.this, android.R.layout.simple_spinner_item, listMemDoctorData);
//设置样式
arrayAdapter.setDropDownViewResource(android.R.layout.simple_list_item_single_choice);
//绑定 Adapter到控件
consultation_et_doctor.setAdapter(arrayAdapter);
}else {
consultation_et_doctor.setAdapter(null);
doctor_id = 0;
Toast.makeText(GV_Consultation.this, "该科室没有医生信息数据", Toast.LENGTH_SHORT).show();
}
} catch (JSONException e) {
Toast.makeText(GV_Consultation.this, "数据请求失败,请稍后重试", Toast.LENGTH_SHORT).show();
}
}
@Override
public void onFailure(int statusCode, Header[] headers, byte[] responseBody, Throwable error) {
//请求失败的回调处理
Toast.makeText(GV_Consultation.this, "请链接网络,稍后重试", Toast.LENGTH_SHORT).show();
}
});
}
5、创建点击事件
//医生选择点击事件
consultation_et_doctor.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
doctor_id = listMemDoctor.get((int) id).id;//获取选择医生的ID
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
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