Java 将选定的微调项值设置为编辑文本视图 - Android
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时间：2020-08-13 19:46:59 来源:igfitidea点击:
Set selected spinner item value to Edit Text View - Android
提问by user2881604
I am new to android. I am displaying strings in my spinner and when user selects a string, i want to enter selected spinner string value using edit text view(when user select food item from spinner i want to enter food's value 10 using edit text view). I am done with setting up the spinner items but i don't know how to enter selected spinner value.
我是安卓新手。我在我的微调器中显示字符串，当用户选择一个字符串时，我想使用编辑文本视图输入选定的微调器字符串值（当用户从微调器中选择食物时，我想使用编辑文本视图输入食物的值 10）。我已经完成了微调项目的设置，但我不知道如何输入选定的微调值。
this is my java file,
这是我的java文件，
public class PaymentsActivity extends Activity implements OnItemSelectedListener {
private Button btnViewExpenses;
private Spinner spinner;
private EditText selectedSpinner;
// array list for spinner adapter
private ArrayList<Category> categoriesList;
ProgressDialog pDialog;
// API urls
// Url to get all categories
private String URL_CATEGORIES = "http://10.0.2.2/category_api/get_categories.php";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.payments);
selectedSpinner = (EditText) findViewById(R.id.categoryItem);
spinner = (Spinner) findViewById(R.id.categoryList);
btnViewExpenses = (Button) findViewById(R.id.btnViewExpenses);
categoriesList = new ArrayList<Category>();
// spinner item select listener
spinner.setOnItemSelectedListener(this);
new GetCategories().execute();
}
/**
* Adding spinner data
* */
private void populateSpinner() {
List<String> lables = new ArrayList<String>();
// txtCategory.setText("");
for (int i = 0; i < categoriesList.size(); i++) {
lables.add(categoriesList.get(i).getName());
}
// Creating adapter for spinner
ArrayAdapter<String> spinnerAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, lables);
// Drop down layout style - list view with radio button
spinnerAdapter
.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// attaching data adapter to spinner
spinner.setAdapter(spinnerAdapter);
}
/**
* Async task to get all categories
* */
private class GetCategories extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(PaymentsActivity.this);
pDialog.setMessage("Loading Expenses Information...");
pDialog.setCancelable(false);
pDialog.show();
}
@Override
protected Void doInBackground(Void... arg0) {
ServiceHandler jsonParser = new ServiceHandler();
String json = jsonParser.makeServiceCall(URL_CATEGORIES, ServiceHandler.GET);
Log.e("Response: ", "> " + json);
if (json != null) {
try {
JSONObject jsonObj = new JSONObject(json);
if (jsonObj != null) {
JSONArray categories = jsonObj
.getJSONArray("categories");
for (int i = 0; i < categories.length(); i++) {
JSONObject catObj = (JSONObject) categories.get(i);
Category cat = new Category(catObj.getInt("id"),
catObj.getString("category"));
categoriesList.add(cat);
}
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("JSON Data", "Didn't receive any data from server!");
}
return null;
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
if (pDialog.isShowing())
pDialog.dismiss();
populateSpinner();
}
}
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position,
long id) {
Toast.makeText(
getApplicationContext(),
parent.getItemAtPosition(position).toString() + " Selected" ,
Toast.LENGTH_LONG).show();
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
}
public void onClickViewExpenses(View view){
Intent viewExpenses = new Intent(this, ExpensesList.class);
startActivity(viewExpenses);
}
}
this is my xml file,
这是我的 xml 文件，
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center_horizontal">
<TextView
android:id="@+id/accountBalanceView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/labelView"
android:layout_marginLeft="26dp"
android:textSize="20dp"
android:text="Account Balance :" />
<Spinner
android:id="@+id/categoryList"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" />
<Button
android:id="@+id/btnSubmitJobOpenAmount"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/jobOpeningAmount"
android:layout_alignRight="@+id/accBalanced"
android:text="Submit" />
<TextView
android:id="@+id/jobOpeningbalance"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/accountBalanceView"
android:layout_centerHorizontal="true"
android:layout_marginTop="18dp"
android:gravity="center_horizontal"
android:text="Job Opening Amount"
android:textSize="20dp" />
<TextView
android:id="@+id/accBalanced"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignRight="@+id/labelView"
android:layout_below="@+id/labelView"
android:layout_marginRight="17dp"
android:text="10000"
android:textColor="#FF0040"
android:textSize="20dp" />
<EditText
android:id="@+id/jobOpeningAmount"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/categoryList"
android:layout_alignLeft="@+id/accountBalanceView"
android:layout_alignRight="@+id/accountBalanceView"
android:layout_marginBottom="22dp"
android:ems="10"
android:inputType="number" >
<requestFocus />
</EditText>
<EditText
android:id="@+id/categoryItem"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/jobOpeningAmount"
android:layout_alignRight="@+id/jobOpeningAmount"
android:layout_below="@+id/categoryList"
android:layout_marginTop="46dp"
android:ems="10"
android:inputType="number" />
<Button
android:id="@+id/btnSubmitCategoryItem"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/categoryItem"
android:layout_alignLeft="@+id/btnSubmitJobOpenAmount"
android:text="Submit" />
<Button
android:id="@+id/btnViewExpenses"
android:onClick="onClickViewExpenses"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="31dp"
android:text="View Previous Expenses" />
<TextView
android:id="@+id/labelView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:gravity="center"
android:padding="10dp"
android:text="Enter Expenses Here"
android:textSize="25dp"
android:textStyle="bold" />
</RelativeLayout>
please help me to do this thing.
请帮我做这件事。
采纳答案by Piyush
Use this.
用这个。
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position,
long id) {
String myStr = spinner.getSelectedItem().toString();
selectedSpinner.setText(myStr);
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
}
回答by Hariharan
Try this..
尝试这个..
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position,
long id) {
Toast.makeText(
getApplicationContext(),
parent.getItemAtPosition(position).toString() + " Selected" ,
Toast.LENGTH_LONG).show();
String type = spinner.getSelectedItem().toString().trim();
selectedSpinner.setText(type);
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
}
回答by kishu mewara
Use This.....
用这个.....
MainActivity.java
主活动.java
String[] text1 = { "SUNDAY", "MONDAY", "TUESDAY",
"WEDNESDAY", "THURSDAY", "FRIDAY", "SATURDAY" };
int[] val1 = { 0, 1, 2, 3, 4, 5, 6};
Spinner spinner1;
TextView textView1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView1 = (TextView)findViewById(R.id.text1);
spinner1 = (Spinner)findViewById(R.id.spinner1);
ArrayAdapter<String> adapter1 =
new ArrayAdapter<String>(MainActivity.this,
android.R.layout.simple_spinner_item, text1);
adapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner1.setAdapter(adapter1);
spinner1.setOnItemSelectedListener(onItemSelectedListener1);
}
OnItemSelectedListener onItemSelectedListener1 =
new OnItemSelectedListener(){
@Override
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {
String s1 = String.valueOf(val1[position]);
textView1.setText(s1);
}
@Override
public void onNothingSelected(AdapterView<?> parent) {}
};
XML CODE
代码
<Spinner
android:id="@+id/spinner1"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/text1"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>
