我有2个微调器.1个微调器显示城市，第2个微调器显示基于微调器1上选择的城市的区域。 例如，如果孟买市有5个区域......我的第一个旋转器应该显示孟买（5），同样也适用于其他城市。 这是我的代码：
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.ImageView;
import android.widget.Spinner;
import android.widget.Toast;
public class SpinnerActivity extends Activity implements OnItemSelectedListener {
Spinner spinnerCity;
Spinner spinnerArea;
AutoCompleteTextView auto_search;
String city[];
ImageView img_search_button;
String count;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
spinnerCity = (Spinner) findViewById(R.id.spinnerCity);
// spinnerArea = (Spinner) findViewById(R.id.spinnerArea);
ArrayAdapter<CharSequence> countryAdapter = ArrayAdapter.createFromResource(this, R.array.city_array, android.R.layout.simple_spinner_item);
countryAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinnerCity.setAdapter(countryAdapter);
spinnerCity.setOnItemSelectedListener(this);
auto_search = (AutoCompleteTextView) findViewById(R.id.auto_search);
img_search_button = (ImageView) findViewById(R.id.img_search_button);
// autoSearch Adapter
city = getResources().getStringArray(R.array.city_array);
//test 19 jan
int j = 0;
for (int i = 0; i < city.length; i++) {
String item = city[i];
if (item instanceof CharSequence) {
//text.setText((CharSequence)item);
j++;
} else {
}
}
String outletsTemp[] = new String[j];
j = 0;
for (int i = 0; i < city.length; i++) {
String item = city[i];
if (item instanceof CharSequence) {
//text.setText((CharSequence)item);
outletsTemp[j] = item;
j++;
System.out.println(item);
} else {
//text.setText(item.toString());
System.out.println(item + "test");
//outletsTemp[i] = "test";
}
}
city = new String[outletsTemp.length];
city = outletsTemp;
ArrayAdapter<CharSequence> outletList = new ArrayAdapter<CharSequence>(this, R.layout.spinner_search, city);
outletList.setDropDownViewResource(android.R.layout.select_dialog_singlechoice);
//AutoCompleteAdapter outletList = new AutoCompleteAdapter(this,android.R.layout.simple_list_item_1,android.R.id.text1,modelData.outletList);
auto_search.setAdapter(outletList);
auto_search.setThreshold(1);
auto_search.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
inputManager.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
String selection = (String) parent.getItemAtPosition(position);
int loc = -1;
for (int i = 0; i < city.length; i++) {
if (city[i].equals(selection)) {
loc = i;
break;
}
}
System.out.println("Position " + loc);
/* modelData.shopPosition = pos;
spinner_outlets.setSelection(modelData.shopPosition);*/
spinnerCity.setSelection(loc);
auto_search.setVisibility(View.GONE);
spinnerCity.setVisibility(View.VISIBLE);
/*InputMethodManager in = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
in.hideSoftInputFromWindow(view.getApplicationWindowToken(), 0);*/
}
});
auto_search.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
final int DRAWABLE_LEFT = 0;
final int DRAWABLE_TOP = 1;
final int DRAWABLE_RIGHT = 2;
final int DRAWABLE_BOTTOM = 3;
if (event.getRawX() >= (auto_search.getRight() - auto_search.getCompoundDrawables()[DRAWABLE_RIGHT].getBounds().width())) {
// your action here
auto_search.setText("");
return true;
}
return false;
}
});
// autoSearch END
img_search_button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (spinnerCity.getVisibility() == View.VISIBLE) {
auto_search.setVisibility(View.VISIBLE);
spinnerCity.setVisibility(View.GONE);
} else {
auto_search.setVisibility(View.GONE);
spinnerCity.setVisibility(View.VISIBLE);
}
}
});
//Intent intent1 = getIntent();
// count= intent1.getStringExtra("COUNT").toString();
}
@Override
public void onItemSelected(AdapterView<?> parent, View arg1, int pos,
long arg3) {
//int num=parent.getCount();
String value= parent.getItemAtPosition(pos).toString();
if (value.equals("Chennai")) {
Intent intent = new Intent(this, Spin2Activity.class);
intent.putExtra("VALUE", value);
startActivity(intent);
} else if (value.equals("Mumbai")) {
Intent intent = new Intent(this, Spin2Activity.class);
intent.putExtra("VALUE", value);
startActivity(intent);
} else if (value.equals("Calcutta")) {
Intent intent = new Intent(this, Spin2Activity.class);
intent.putExtra("VALUE", value);
startActivity(intent);
}
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
}
Spinner2Activity
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.Toast;
public class Spin2Activity extends AppCompatActivity{
Spinner spinnerArea;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_spin2);
// Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
// setSupportActionBar(toolbar);
Intent intent = getIntent();
String value= intent.getStringExtra("VALUE");
spinnerArea = (Spinner) findViewById(R.id.spinnerArea);
if (value.equals("Chennai")) {
ArrayAdapter<CharSequence> adapter = ArrayAdapter
.createFromResource(this, R.array.area_chennai,
android.R.layout.simple_spinner_dropdown_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinnerArea.setAdapter(adapter);
// int count= spinnerArea.getAdapter().getCount();
Toast.makeText(getApplicationContext(), "Total number of Items are:" + spinnerArea.getAdapter().getCount(), Toast.LENGTH_LONG).show();
}else if (value.equals("Mumbai")){
ArrayAdapter<CharSequence> adapter = ArrayAdapter
.createFromResource(this, R.array.area_mumbai,
android.R.layout.simple_spinner_dropdown_item);
spinnerArea.setAdapter(adapter);
// int count= spinnerArea.getAdapter().getCount();
Toast.makeText(getApplicationContext(), "Total number of Items are:" + spinnerArea.getAdapter().getCount(), Toast.LENGTH_LONG).show();
}else if(value.equals("Calcutta")){
ArrayAdapter<CharSequence> adapter = ArrayAdapter
.createFromResource(this, R.array.area_calcutta,
android.R.layout.simple_spinner_dropdown_item);
spinnerArea.setAdapter(adapter);
}
}
}
我的spinner1的xml代码
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent"
android:layout_weight="2"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp" android:layout_weight="1" android:orientation="horizontal">
<Spinner
android:id="@+id/spinnerCity"
style="?android:attr/spinnerItemStyle"
android:layout_width="200dp"
android:spinnerMode="dialog"
android:layout_height="60dp"
android:layout_weight="3"
android:layout_centerHorizontal="true"
android:layout_marginTop="8dp"
/>
<!-- <ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/spinnerCity"
android:layout_width="200dp"
android:layout_height="60dp"
android:layout_weight="3"
android:layout_marginTop="8dp"
/>-->
<AutoCompleteTextView android:id="@+id/auto_search" android:visibility="gone"
android:layout_width="10dp"
android:layout_height="60dp" android:textSize="20dp"
android:layout_weight="3" android:drawableRight="@android:drawable/ic_delete"/>
<ImageView
android:id="@+id/img_search_button"
android:layout_marginTop="8dp"
android:layout_width="0dp"
android:layout_height="60dp"
android:layout_weight="3"
android:src="@android:drawable/ic_search_category_default" android:padding="3dp"/>
</LinearLayout>
</LinearLayout>
我的字符串值::
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">Spinner</string>
<string name="action_settings">Settings</string>
<string name="hello_world">Hello world!</string>
<string name="title_activity_main">MainActivity</string>
<string name="Login">Login</string>
<string-array name="city_array">
<item>Delhi</item>
<item>Chennai</item>
<item>Mumbai</item>
<item>Calcutta</item>
</string-array>
<string-array name="area_chennai">
<item>T Nagar</item>
<item>Mount Road</item>
<item>Mylapore</item>
<!--<item>Vadapalani</item>-->
</string-array>
<string-array name="area_mumbai">
<item>Andheri</item>
<item>Bandra</item>
<item>Dadar</item>
<item>Matunga</item>
</string-array>
<string-array name="area_calcutta">
<item>Barasat</item>
<item>Dum Dum</item>
<item>Kanchrapara</item>
<item>Titagarh</item>
</string-array>
<string name="title_activity_login">App</string>
<string name="title_activity_spin2">Spin2Activity</string>
</resources>
最后告诉我如何显示微调器以及每个微调器中的项目数
输出： spinner1应显示在下拉列表中
孟买（5）加尔各答（4）钦奈（4）
然后微调器2显示每个spinner1项目中的项目
答案 0 :(得分：1)
您可以使用包含文本和计数的布局编写自定义数组适配器，并从自定义适配器中的getDropDownView方法填充这两者。