转载：在 android dialog中使用Autocompletetext
我想再android Dialog中使用 autocompletetext, 在开发测试过程中碰见不少问题，把最后的成品发布出来，避免大家走弯路，下面的代码是完整代码
详细代码如下
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import android.app.Activity;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
public class MainActivity extends Activity {
private static Context context;
Button okButton;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final View addView = getLayoutInflater().inflate(R.layout.activity_main, null);
context = this.getApplicationContext();
Button search = (Button)findViewById(R.id.btn_save);
search.setOnClickListener(showSearch);
}
private OnClickListener showSearch = new OnClickListener()
{
public void onClick(View v)
{
showDialogList();
}
};
public static Context getAppContext() {
return MainActivity.context;
}
static final String[] COUNTRIES = new String[] {
"Afghanistan", "Albania", "Algeria", "American Samoa", "Andorra",
"Angola", "Anguilla", "Antarctica", "Antigua and Barbuda",
"Argentina","Armenia", "Aruba", "Australia", "Austria", "Azerbaijan",
"Bahrain", "Bangladesh", "Barbados", "Belarus", "Belgium"
};
private void showDialogList() {
final Dialog dialog = new Dialog(this);
View view = getLayoutInflater().inflate(R.layout.citylistview,null);
ListView lv = (ListView) view.findViewById(R.id.List);
final ArrayAdapter<String> adapter= new ArrayAdapter<String>(context, android.R.layout.simple_list_item_1, COUNTRIES);
lv.setAdapter(adapter);
AutoCompleteTextView filterText = (AutoCompleteTextView ) view.findViewById(R.id.EditBox);
filterText.setAdapter(adapter);
dialog.setContentView(view);
dialog.setCancelable(true);
Window window = dialog.getWindow();
window.setGravity(Gravity.CENTER);
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
}
});
dialog.show();
filterText.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
adapter.getFilter().filter(s);
}
});
}
} |
citylistview.xml
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<AutoCompleteTextView
android:id="@+id/EditBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
</AutoCompleteTextView>
<ListView
android:id="@+id/List"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
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CityListDialog.java
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public class CityListDialog extends Dialog implements OnClickListener {
private ListView list;
private EditText filterText = null;
ArrayAdapter<String> adapter = null;
private static final String TAG = "CityList";
public CityListDialog(Context context, String[] cityList) {
super(context);
setContentView(R.layout.citylistview);
this.setTitle("Select City");
filterText = (EditText) findViewById(R.id.EditBox);
filterText.addTextChangedListener(filterTextWatcher);
list = (ListView) findViewById(R.id.List);
adapter = new ArrayAdapter<String>(context, android.R.layout.simple_list_item_1, cityList);
list.setAdapter(adapter);
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> a, View v, int position, long id) {
Log.d(TAG, "Selected Item is = "+list.getItemAtPosition(position));
}
});
}public void onClick(View v) {
}private TextWatcher filterTextWatcher = new TextWatcher() {
public void afterTextChanged(Editable s) {
}
public void beforeTextChanged(CharSequence s, int start, int count,int after) {
}
public void onTextChanged(CharSequence s, int start, int before,int count) {
adapter.getFilter().filter(s);
}
};@Overridepublic void onStop(){
filterText.removeTextChangedListener(filterTextWatcher);
}} |
AutoCompleteTextView组件是一个可编辑的文本视图，能显示用户键入的相关信息。建议列表显示一个下拉菜单，用户可以从中选择一项，以完成输入。建议列表是从一个数据适配器获取的数据。它有3个重要的方法。
clearListSelection()：清除选中的列表项。
dismissDropDown()：如果存在关闭下拉菜单。
getAdapter()：获取适配器。