与微调的Android可编辑的文本视图 [英] Editable text view with spinner android
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问题描述
我想在这里用户可以通过键盘输入在Android中创建一个控件或输入通过下拉列表(微调)。
I want to create a control in android where user can input through keyboard or enter through drop down list(spinner).
其实,值我很难code在阵列中的微调并不详尽,所以用户应该通过虚拟键盘还可以选择输入。
Actually the values I hard code in array in spinner is not exhaustive, so user should have the option to input through virtual keyboard also.
因此,无论用户可以通过键盘输入或从列表中选择?
So Either user can enter through keyboard or select from list?
我怎样才能做到这一点在Android的?
How can i achieve this in android?
推荐答案
您可以建立自己的看法:
You can build your own view:
public class ServerPreference extends DialogPreference {
private String value;
private EditText editText;
private Spinner spinner;
private final int server_list_id;
ArrayList<String> servers;
public ServerPreference(Context context, AttributeSet attrs) {
super(context, attrs);
setPersistent(false);
setDialogLayoutResource(R.layout.server_preference_layout);
servers = new ArrayList<String>();
Resources r = context.getResources();
if (MySettings.KEY_ASR_SERVER_HOST.equals(getKey())) {
server_list_id = R.array.asrServers;
} else if (MySettings.KEY_LOG_SERVER_HOST.equals(getKey())) {
server_list_id = R.array.logServers;
} else {
server_list_id = R.array.servicesServers;
}
Collections.addAll(servers, r.getStringArray(server_list_id));
}
@Override
protected void onBindDialogView(View view) {
editText = (EditText)view.findViewById(R.id.server_preference_text);
spinner = (Spinner)view.findViewById(R.id.server_preference_spinner);
SharedPreferences pref = getSharedPreferences();
value = pref.getString(getKey(), "");
editText.setText(value);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
view.getContext(), server_list_id, android.R.layout.simple_spinner_item );
adapter.setDropDownViewResource( android.R.layout.simple_dropdown_item_1line );
spinner.setAdapter( adapter );
updateSpinner();
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
if ( position != 0 ) {
value = servers.get(position);
editText.setText(value);
}
}
public void onNothingSelected(AdapterView<?> arg0) {
}
});
editText.addTextChangedListener(new TextWatcher() {
public void onTextChanged(CharSequence s, int start, int before, int count) {
updateSpinner();
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
public void afterTextChanged(Editable s) {
}
});
super.onBindDialogView(view);
}
void updateSpinner() {
value = editText.getText().toString();
int index = servers.indexOf(value);
if ( index == -1 )
index = 0;
spinner.setSelection(index);
}
@Override
protected void onDialogClosed(boolean positiveResult) {
if ( positiveResult ) {
SharedPreferences.Editor editor = getEditor();
editor.putString(getKey(),value);
editor.commit();
}
super.onDialogClosed(positiveResult);
}
public String getValue() {
return value;
}
void setValue(String value) {
this.value = value;
}
}
自定义视图布局:
Layout of custom view:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText android:layout_height="wrap_content" android:layout_width="match_parent" android:id="@+id/server_preference_text" android:inputType="text">
<requestFocus></requestFocus>
</EditText>
<Spinner android:layout_height="wrap_content" android:id="@+id/server_preference_spinner" android:layout_width="match_parent"></Spinner>
</LinearLayout>
当你想使用这个观点,只是定义在XML文件中:
When you want to use this view, just define in XML file:
<xxx.xxxxxx.xxxxx.settings.debug.ServerPreference
android:title="ASR/VVS Server"
android:persistent="true"
android:positiveButtonText="OK"
android:dialogTitle="ASR/VVS Server"
android:key="SERVER_NAME"
android:negativeButtonText="Cancel"
android:entryValues="@array/asrServers"
android:entries="@array/asrServers"/>
这篇关于与微调的Android可编辑的文本视图的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
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