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) {

}

});

以上是 Android Studio绑定下拉框数据详解 的全部内容, 来源链接: utcz.com/z/339951.html

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