Android实现自定义下拉列表绑定数据
xml界面代码：
<LinearLayout
android:id="@+id/LinearLayout_warehouse7"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:layout_marginBottom="10dp"
android:orientation="horizontal">
<TextView
android:id="@+id/textView61"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/txt_return_warehosing"
android:textAlignment="viewEnd" />
<AutoCompleteTextView
android:id="@+id/AutoCompleteTextView_house"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:cacheColorHint="#00000000"
android:completionThreshold="1"
android:dropDownHorizontalOffset="5dp"
android:ems="10"
android:gravity="center_vertical"
android:hint="请输入或选择"
android:textSize="14sp">
<!-- <requestFocus />-->
</AutoCompleteTextView>
<ImageButton
android:id="@+id/ImageButton_house"
android:layout_width="10dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:src="@android:drawable/btn_dropdown"
android:textSize="14sp" />
</LinearLayout>
<LinearLayout
android:id="@+id/LinearLayout_location7"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal">
<TextView
android:id="@+id/textView71"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/txt_return_location_name"
android:textAlignment="viewEnd" />
<AutoCompleteTextView
android:id="@+id/AutoCompleteTextView_location_name"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:cacheColorHint="#00000000"
android:completionThreshold="1"
android:dropDownHorizontalOffset="5dp"
android:ems="10"
android:gravity="center_vertical"
android:hint="请输入或选择"
android:textSize="14sp">
<!-- <requestFocus />-->
</AutoCompleteTextView>
<ImageButton
android:id="@+id/ImageButton_location_name"
android:layout_width="10dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:src="@android:drawable/btn_dropdown"
android:textSize="14sp" />
</LinearLayout>
java实现自定义适配器代码：
public class CustomAutoCompleteAdapter extends ArrayAdapter<KeyValueItem> {
private Context context;
private int resource;
List<KeyValueItem> itemList;
KeyValueItem KeyValueItem_select=null;
public CustomAutoCompleteAdapter(Context context, int resource, List<KeyValueItem> objects) {
super(context, resource, objects);
this.context = context;
this.resource = resource;
}
// @Override
// public KeyValueItem getItem(int position) {
// // TODO Auto-generated method stub
// return itemList.get(position);
// }
// @Override
// public long getItemId(int position) {
// // TODO Auto-generated method stub
// return position;
// }
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// 尝试重用convertView来优化性能
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(resource, parent, false);
}
TextView textView_Key = convertView.findViewById(R.id.TextView_Key);
TextView textView_value = convertView.findViewById(R.id.TextView_value);
textView_Key.setText(getItem(position).getKey());
textView_value.setText(getItem(position).getValue());
textView_Key.setVisibility(View.GONE);
// 这里不需要再设置字体大小，因为它已经在布局文件中设置了
textView_value.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
KeyValueItem_select=(KeyValueItem)getItem(position);
Log.d("data1", "5value:"+KeyValueItem_select.getValue()+"-"+KeyValueItem_select.getKey());
AutoCompleteTextView_house.setText(KeyValueItem_select.getValue());
AutoCompleteTextView_house.dismissDropDown();
AutoCompleteTextView_house.clearFocus();
}
});
textView_Key.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
KeyValueItem_select=(KeyValueItem)getItem(position);
Log.d("data1", "6value:"+KeyValueItem_select.getValue()+"-"+KeyValueItem_select.getKey());
AutoCompleteTextView_house.setText(KeyValueItem_select.getValue());
AutoCompleteTextView_house.dismissDropDown();
AutoCompleteTextView_house.clearFocus();
}
});
return convertView;
}
}
public class CustomAutoCompleteLocationAdapter extends ArrayAdapter<KeyValueItem> {
private Context context;
private int resource;
List<KeyValueItem> itemList;
KeyValueItem KeyValueItem_select=null;
public CustomAutoCompleteLocationAdapter(Context context, int resource, List<KeyValueItem> objects) {
super(context, resource, objects);
this.context = context;
this.resource = resource;
}
// @Override
// public KeyValueItem getItem(int position) {
// // TODO Auto-generated method stub
// return itemList.get(position);
// }
// @Override
// public long getItemId(int position) {
// // TODO Auto-generated method stub
// return position;
// }
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// 尝试重用convertView来优化性能
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(resource, parent, false);
}
TextView textView_Key = convertView.findViewById(R.id.TextView_Key);
TextView textView_value = convertView.findViewById(R.id.TextView_value);
textView_Key.setText(getItem(position).getKey());
textView_value.setText(getItem(position).getValue());
textView_Key.setVisibility(View.GONE);
// 这里不需要再设置字体大小，因为它已经在布局文件中设置了
textView_value.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
KeyValueItem_select=(KeyValueItem)getItem(position);
Log.d("data1", "5value:"+KeyValueItem_select.getValue()+"-"+KeyValueItem_select.getKey());
AutoCompleteTextView_location_name.setText(KeyValueItem_select.getValue());
AutoCompleteTextView_location_name.dismissDropDown();
AutoCompleteTextView_location_name.clearFocus();
}
});
textView_Key.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
KeyValueItem_select=(KeyValueItem)getItem(position);
Log.d("data1", "6value:"+KeyValueItem_select.getValue()+"-"+KeyValueItem_select.getKey());
AutoCompleteTextView_location_name.setText(KeyValueItem_select.getValue());
AutoCompleteTextView_location_name.dismissDropDown();
AutoCompleteTextView_location_name.clearFocus();
}
});
return convertView;
}
}
定义适配器初始化代码：
CustomAutoCompleteAdapter adapter_house=null;
CustomAutoCompleteLocationAdapter adapter_location=null;
List<KeyValueItem> itemList=new ArrayList<KeyValueItem>();
List<KeyValueItem> itemList_location=new ArrayList<KeyValueItem>();
private AutoCompleteTextView AutoCompleteTextView_house;
private AutoCompleteTextView AutoCompleteTextView_location_name;
AutoCompleteTextView_house = (AutoCompleteTextView) this.findViewById(R.id.AutoCompleteTextView_house);
AutoCompleteTextView_location_name = (AutoCompleteTextView) this.findViewById(R.id.AutoCompleteTextView_location_name);
KeyValueItem keyValueItem1=new KeyValueItem("001","仓库1");
KeyValueItem keyValueItem2=new KeyValueItem("002","仓库2");
KeyValueItem keyValueItem3=new KeyValueItem("003","仓库3");
itemList.add(keyValueItem1);
itemList.add(keyValueItem2);
itemList.add(keyValueItem3);
http_GetWarehouse(OrganizationNo);
// ArrayAdapter<KeyValueItem> arrayAdapter_house2 = new ArrayAdapter<KeyValueItem>(this,
// R.layout.list_item_layout, itemList );
// AutoCompleteTextView_house.setAdapter(arrayAdapter_house2);
adapter_house = new CustomAutoCompleteAdapter(this, R.layout.list_item_layout, itemList);
AutoCompleteTextView_house.setAdapter(adapter_house);
ImageButton button_house = (ImageButton) this.findViewById(R.id.ImageButton_house);
button_house.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// 显示下拉框
AutoCompleteTextView_house.showDropDown();
//Log.d("data1", "value:"+AutoCompleteTextView_house.getText().toString());
}
});
AutoCompleteTextView_house.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
// Log.d("data1", "2value:"+AutoCompleteTextView_house.getText().toString());
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// Log.d("data1", "3value:"+AutoCompleteTextView_house.getText().toString());
//
// if(adapter2.KeyValueItem_select!=null){
// String key= adapter2.KeyValueItem_select.getKey();
// Log.d("data1", "3key:"+key);
// }
}
@Override
public void afterTextChanged(Editable s) {
// AutoCompleteTextView_house.clearFocus();
Log.d("data1", "4value:"+AutoCompleteTextView_house.getText().toString());
if(adapter_house.KeyValueItem_select!=null){
String key= adapter_house.KeyValueItem_select.getKey();
String value= adapter_house.KeyValueItem_select.getValue();
if(key!=null&&key!=""&&key.length()>0){
Log.d("data1", "4key:"+key+"-"+value);
http_GetLocation(key);
warehouse_no2=key;
warehouse_name2=value;
}else {
itemList_location.clear();
warehouse_no2="";
warehouse_name2="";
adapter_location.notifyDataSetChanged();
}
}
}
});
ImageButton button_location_name = (ImageButton) this.findViewById(R.id.ImageButton_location_name);
button_location_name.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// 显示下拉框
AutoCompleteTextView_location_name.showDropDown();
}
});
KeyValueItem keyValueItem4=new KeyValueItem("001","仓位1");
KeyValueItem keyValueItem5=new KeyValueItem("002","仓位2");
KeyValueItem keyValueItem6=new KeyValueItem("003","仓位3");
itemList_location.add(keyValueItem4);
itemList_location.add(keyValueItem5);
itemList_location.add(keyValueItem6);
adapter_location = new CustomAutoCompleteLocationAdapter(this, R.layout.list_item_layout, itemList_location);
AutoCompleteTextView_location_name.setAdapter(adapter_location);
AutoCompleteTextView_location_name.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
// Log.d("data1", "2value:"+AutoCompleteTextView_house.getText().toString());
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// Log.d("data1", "3value:"+AutoCompleteTextView_house.getText().toString());
//
// if(adapter2.KeyValueItem_select!=null){
// String key= adapter2.KeyValueItem_select.getKey();
// Log.d("data1", "3key:"+key);
// }
}
@Override
public void afterTextChanged(Editable s) {
// AutoCompleteTextView_location_name.clearFocus();
Log.d("data1", "4仓位value:"+AutoCompleteTextView_location_name.getText().toString());
if(adapter_location.KeyValueItem_select!=null){
String key= adapter_location.KeyValueItem_select.getKey();
String value= adapter_location.KeyValueItem_select.getValue();
if(key!=null&&key!=""&&key.length()>0){
location_no2=key;
location_name2=value;
Log.d("data1", "4仓位key:"+key+"-"+value);
}else {
location_no2="";
location_name2="";
}
}
}
});
适配器代码：
<?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="wrap_content" >
<TextView
android:id="@+id/TextView_value"
android:layout_width="match_parent"
android:layout_height="30dp"
android:layout_weight="1"
android:background="@drawable/textview_right_border_simple"
android:textAlignment="center"
android:textColor="@android:color/black"
android:textSize="14sp" />
<TextView
android:id="@+id/TextView_Key"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:background="@drawable/textview_right_border_simple"
android:textAlignment="center"
android:textColor="#005500"
android:textSize="12sp" />
</LinearLayout>
绑定数据实体类
public class KeyValueItem {
private String key;
private String value;
public KeyValueItem() {
}
public void setKey(String key) {
this.key = key;
}
public void setValue(String value) {
this.value = value;
}
public KeyValueItem(String key, String value) {
this.key = key;
this.value = value;
}
public String getKey() {
return key;
}
public String getValue() {
return value;
}
@Override
public String toString() {
return value; // AutoCompleteTextView显示value
}
}
以上就是绑定下拉列表数据代码
原文地址：https://blog.csdn.net/baidu_38995168/article/details/142360405
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