如何使用android:layout属性为自定义首选项实例化布局
我可以通过如何使用android:layout属性为自定义首选项实例化布局,android,layout,preference,Android,Layout,Preference,我可以通过android:layout属性为首选项设置适当的布局。例如 <Preference android:key="friction" android:title="@string/friction" android:layout="@layout/friction_fragment" android:shouldDisableView="true" android:defaultValue="30" android:enabled="true"
android:layout
属性为首选项设置适当的布局。例如
<Preference
android:key="friction"
android:title="@string/friction"
android:layout="@layout/friction_fragment"
android:shouldDisableView="true"
android:defaultValue="30"
android:enabled="true"
android:selectable="true"
android:summary="Bite friction">
</Preference>
但我设置的这些事件侦听器并没有被触发。
如何捕捉这些事件,例如,单击“从”按钮。
编辑
不,它没有引发任何异常。
下面是更详细的代码
public class SettingsActivity extends PreferenceActivity implements OnPreferenceChangeListener, OnSeekBarChangeListener
{
private TextView m_txtSummary;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preferences);
ListPreference difficulty = (ListPreference)this.findPreference("difficulty");
difficulty.setSummary(difficulty.getEntry());
difficulty.setOnPreferenceChangeListener(this);
Preference fric = (Preference)this.findPreference("friction");
View v = fric.getView(null, null);
SeekBar sbFriction = (SeekBar)v.findViewById(R.id.sbFriction);
sbFriction.setOnSeekBarChangeListener(this);
Button btnFric = (Button) v.findViewById(R.id.btnFriction);
btnFric.setOnClickListener(m_onClick);
m_txtSummary = (TextView)v.findViewById(R.id.txtSummary);
fric.setSummary(fric.toString());
fric.setOnPreferenceChangeListener(this);
CheckBoxPreference music = (CheckBoxPreference)this.findPreference("music");
music.setOnPreferenceChangeListener(this);
}
private OnClickListener m_onClick = new OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
v.getId();
}
};
@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
if(newValue instanceof Boolean)
return true;
preference.setSummary(newValue.toString());
return true;
}
@Override
public void onProgressChanged(SeekBar v, int nProgress, boolean arg2) {
// TODO Auto-generated method stub
m_txtSummary.append(" " + nProgress);
m_txtSummary.invalidate();
}
@Override
public void onStartTrackingTouch(SeekBar arg0) {
// TODO Auto-generated method stub
}
@Override
public void onStopTrackingTouch(SeekBar arg0) {
// TODO Auto-generated method stub
//notifyChanged();
}
}
我不确定您是否能够按照上面描述的方式将自定义布局与
首选项活动
结合使用
我认为你应该:
通过addPreferencesFromResource()
使用PreferenceScreen
,并为SharedReferences
项实现类,如CheckBoxPreference
、DialogPreference
和MultiSelectListPreference
。()
或
使用自定义布局(使用setContentView()
)创建一个自定义活动(而不是PreferenceActivity
),并使用PreferenceManager.getDefaultSharedReferences()
在事件侦听器中编辑它们(View.onClickListener()
),手动连接到共享引用中使用SharedReferences.Editor
希望这是有意义的。事实上我找到了另一个解决方案。您仍然可以使用首选项功能:
只需添加一个调用自定义布局的片段并添加其类。
但是,您将在清单中得到警告:(您可以忽略或修复)
[res](AndroidManifest.xml)
“YOURPACKAGE.SettingsActivity\u CUSTOMLAYOUT1不是公共的”
它只从您的设置活动中调用,因此您可以忽略它
或
如果您想从外部调用此活动,只需为其创建一个自己的类,并将其命名为SettingsActivity\u CUSTOMLAYOUT1.java
代码:
[java](SettingsActivity.java)
公共类设置活动扩展了AppCompativePreferenceActivity{
私有静态首选项.OnPreferenceChangeListener sBindPreferenceSummaryToValueListener=新首选项.OnPreferenceChangeListener(){
@凌驾
公共布尔onPreferenceChange(首选项、对象值){
字符串stringValue=value.toString();
if(ListPreference的首选项实例){
ListPreference=(ListPreference)首选项;
int index=listPreference.findIndexOfValue(stringValue);
首选项集摘要(
索引>=0
?listPreference.getEntries()[索引]
:空);
}else if(RingtonePreference的首选项实例){
if(TextUtils.isEmpty(stringValue)){
preference.setSummary(R.string.pref_铃声_静音);
}否则{
Ringtone Ringtone=RingtoneManager.getRingtone(
preference.getContext(),Uri.parse(stringValue));
如果(铃声==null){
preference.setSummary(null);
}否则{
String name=ringtone.getTitle(preference.getContext());
首选项。集合摘要(名称);
}
}
}否则{
首选项.setSummary(stringValue);
}
返回true;
}
};
私有静态布尔值isxlargetable(上下文){
返回(context.getResources().getConfiguration().screenLayout
&Configuration.SCREENLAYOUT\u SIZE\u MASK)>=Configuration.SCREENLAYOUT\u SIZE\u XLARGE;
}
私有静态void bindPreferenceSummaryToValue(首选项){
setOnPreferenceChangeListener(sBindPreferenceSummaryToValueListener);
sBindPreferenceSummaryToValueListener.onPreferenceChange(首选项,
优先权经理
.GetDefaultSharedReferences(首选项.getContext())
.getString(首选项.getKey(),“”);
}
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setupActionBar();
}
私有void setupActionBar(){
ActionBar ActionBar=getSupportActionBar();
if(actionBar!=null){
actionBar.setDisplayHomeAsUpEnabled(true);
}
}
@凌驾
公共布尔值onIsMultiPane(){
返回Isxlarge平板电脑(此);
}
@凌驾
@TargetApi(构建版本代码蜂窝)
public void onBuildHeaders(列表目标){
loadHeadersFromResource(R.xml.pref_头,目标);
}
受保护的布尔值isValidFragment(字符串碎片名称){
返回PreferenceFragment.class.getName().equals(fragmentName)
||YOURFRAGMENT1.class.getName().equals(fragmentName)
||YOURFRAGMENT2.class.getName().equals(fragmentName)
||CUSTOMLAYOUT1.class.getName().equals(fragmentName)
//…添加碎片
}
@TargetApi(构建版本代码蜂窝)
公共静态类YOURFRAGMENT1扩展了PreferenceFragment{
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.YOURFRAGMENTXML1);
设置选项菜单(真);
}
@凌驾
公共布尔值onOptionsItemSelected(菜单项项){
int id=item.getItemId();
if(id==android.R.id.home){
startActivity(新意图(getActivity(),setingsActivity.class));
返回true;
}
返回super.onOptionsItemSelected(项目);
}
}
@TargetApi(构建版本代码蜂窝)
公共静态类YOURFRAGMENT2扩展了PreferenceFragment{
@凌驾
创建时的公共无效(Bu)
Preference fric = (Preference)this.findPreference("friction");
View v = fric.getView(null, null);
SeekBar sbFriction = (SeekBar)v.findViewById(R.id.sbFriction);
sbFriction.setOnSeekBarChangeListener(this);
Button btnFric = (Button) v.findViewById(R.id.btnFriction);
btnFric.setOnClickListener(m_onClick);
public class SettingsActivity extends PreferenceActivity implements OnPreferenceChangeListener, OnSeekBarChangeListener
{
private TextView m_txtSummary;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preferences);
ListPreference difficulty = (ListPreference)this.findPreference("difficulty");
difficulty.setSummary(difficulty.getEntry());
difficulty.setOnPreferenceChangeListener(this);
Preference fric = (Preference)this.findPreference("friction");
View v = fric.getView(null, null);
SeekBar sbFriction = (SeekBar)v.findViewById(R.id.sbFriction);
sbFriction.setOnSeekBarChangeListener(this);
Button btnFric = (Button) v.findViewById(R.id.btnFriction);
btnFric.setOnClickListener(m_onClick);
m_txtSummary = (TextView)v.findViewById(R.id.txtSummary);
fric.setSummary(fric.toString());
fric.setOnPreferenceChangeListener(this);
CheckBoxPreference music = (CheckBoxPreference)this.findPreference("music");
music.setOnPreferenceChangeListener(this);
}
private OnClickListener m_onClick = new OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
v.getId();
}
};
@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
if(newValue instanceof Boolean)
return true;
preference.setSummary(newValue.toString());
return true;
}
@Override
public void onProgressChanged(SeekBar v, int nProgress, boolean arg2) {
// TODO Auto-generated method stub
m_txtSummary.append(" " + nProgress);
m_txtSummary.invalidate();
}
@Override
public void onStartTrackingTouch(SeekBar arg0) {
// TODO Auto-generated method stub
}
@Override
public void onStopTrackingTouch(SeekBar arg0) {
// TODO Auto-generated method stub
//notifyChanged();
}
}
android:name=".SettingsActivity_CUSTOMLAYOUT1"
public class SettingsActivity extends AppCompatPreferenceActivity {
private static Preference.OnPreferenceChangeListener sBindPreferenceSummaryToValueListener = new Preference.OnPreferenceChangeListener() {
@Override
public boolean onPreferenceChange(Preference preference, Object value) {
String stringValue = value.toString();
if (preference instanceof ListPreference) {
ListPreference listPreference = (ListPreference) preference;
int index = listPreference.findIndexOfValue(stringValue);
preference.setSummary(
index >= 0
? listPreference.getEntries()[index]
: null);
} else if (preference instanceof RingtonePreference) {
if (TextUtils.isEmpty(stringValue)) {
preference.setSummary(R.string.pref_ringtone_silent);
} else {
Ringtone ringtone = RingtoneManager.getRingtone(
preference.getContext(), Uri.parse(stringValue));
if (ringtone == null) {
preference.setSummary(null);
} else {
String name = ringtone.getTitle(preference.getContext());
preference.setSummary(name);
}
}
} else {
preference.setSummary(stringValue);
}
return true;
}
};
private static boolean isXLargeTablet(Context context) {
return (context.getResources().getConfiguration().screenLayout
& Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_XLARGE;
}
private static void bindPreferenceSummaryToValue(Preference preference) {
preference.setOnPreferenceChangeListener(sBindPreferenceSummaryToValueListener);
sBindPreferenceSummaryToValueListener.onPreferenceChange(preference,
PreferenceManager
.getDefaultSharedPreferences(preference.getContext())
.getString(preference.getKey(), ""));
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setupActionBar();
}
private void setupActionBar() {
ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
actionBar.setDisplayHomeAsUpEnabled(true);
}
}
@Override
public boolean onIsMultiPane() {
return isXLargeTablet(this);
}
@Override
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public void onBuildHeaders(List<Header> target) {
loadHeadersFromResource(R.xml.pref_headers, target);
}
protected boolean isValidFragment(String fragmentName) {
return PreferenceFragment.class.getName().equals(fragmentName)
|| YOURFRAGMENT1.class.getName().equals(fragmentName)
|| YOURFRAGMENT2.class.getName().equals(fragmentName)
|| CUSTOMLAYOUT1.class.getName().equals(fragmentName)
//... Add Fragments
}
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public static class YOURFRAGMENT1 extends PreferenceFragment {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.YOURFRAGMENTXML1);
setHasOptionsMenu(true);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == android.R.id.home) {
startActivity(new Intent(getActivity(), SettingsActivity.class));
return true;
}
return super.onOptionsItemSelected(item);
}
}
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public static class YOURFRAGMENT2 extends PreferenceFragment {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.pref_private_data);
setHasOptionsMenu(true);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == android.R.id.home) {
startActivity(new Intent(getActivity(), SettingsActivity.class));
return true;
}
return super.onOptionsItemSelected(item);
}
}
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public static class FRAGMENTFORCUSTOMLAYOUT1 extends PreferenceFragment {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
startActivity(new Intent(getActivity(), SettingsActivity.class));
startActivity(new Intent(getActivity(), CUSTOMLAYOUT1.class));
setHasOptionsMenu(true);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == android.R.id.home) {
startActivity(new Intent(getActivity(), SettingsActivity.class));
return true;
}
return super.onOptionsItemSelected(item);
}
}
}
class SettingsActivity_CUSTOMLAYOUT1 extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.CUSTOMLAYOUT1);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
finish();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
<preference-headers xmlns:android="http://schemas.android.com/apk/res/android">
<header
android:fragment="YOURPACKAGE.SettingsActivity$YOURFRAGMENT1"
android:icon="@drawable/YOURICON"
android:title="@string/TITLE"
android:summary="@string/SUBTITLE"/>
<header
android:fragment="YOURPACKAGE.SettingsActivity$YOURFRAGMENT2"
android:icon="@drawable/YOURICON"
android:title="@string/TITLE"
android:summary="@string/SUBTITLE"/>
<header
android:fragment="YOURPACKAGE.SettingsActivity$CUSTOMLAYOUT1"
android:icon="@drawable/YOURICON"
android:title="@string/TITLE"
android:summary="@string/SUBTITLE"/>
</preference-headers>
<?xml version="1.0" encoding="utf-8"?>
<...your custom layout>
<?xml version="1.0" encoding="utf-8"?>
<manifest>
<application
//Add activity
<activity
android:name=".SettingsActivity_CUSTOMLAYOUT1"
android:parentActivityName=".SettingsActivity">
</activity>
</application>
</manifest>