不推荐使用findPreference(java.lang.CharSequence) [英] findPreference(java.lang.CharSequence) is deprecated
本文介绍了不推荐使用findPreference(java.lang.CharSequence)的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
它给我错误"findPreference(java.lang.CharSequence)已弃用".当前,我的应用程序的目标是API 10及更高版本.任何解决此问题的帮助将不胜感激.
公共类SettingsActivity扩展了PreferenceActivity实现Preference.OnPreferenceChangeListener {
public class SettingsActivity extends PreferenceActivity implements Preference.OnPreferenceChangeListener {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Add 'general' preferences, defined in the XML file
// TODO: Add preferences from XML
addPreferencesFromResource(R.xml.pref_general);
bindPreferenceSummaryToValue(findPreference(getString(R.string.pref_location_key));
// For all preferences, attach an OnPreferenceChangeListener so the UI summary can be
// updated when the preference changes.
// TODO: Add preferences
}
/**
* Attaches a listener so the summary is always updated with the preference value.
* Also fires the listener once, to initialize the summary (so it shows up before the value
* is changed.)
*/
private void bindPreferenceSummaryToValue(Preference preference) {
// Set the listener to watch for value changes.
preference.setOnPreferenceChangeListener(this);
// Trigger the listener immediately with the preference's
// current value.
onPreferenceChange(preference,
PreferenceManager
.getDefaultSharedPreferences(preference.getContext())
.getString(preference.getKey(), ""));
}
@Override
public boolean onPreferenceChange(Preference preference, Object value) {
String stringValue = value.toString();
if (preference instanceof ListPreference) {
// For list preferences, look up the correct display value in
// the preference's 'entries' list (since they have separate labels/values).
ListPreference listPreference = (ListPreference) preference;
int prefIndex = listPreference.findIndexOfValue(stringValue);
if (prefIndex >= 0) {
preference.setSummary(listPreference.getEntries()[prefIndex]);
}
} else {
// For other preferences, set the summary to the value's simple string representation.
preference.setSummary(stringValue);
}
return true;
}
}
推荐答案
public class SettingsActivity extends PreferenceActivity{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Add 'general' preferences, defined in the XML file
getFragmentManager().beginTransaction().replace(android.R.id.content, new MyPreferenceFragment()).commit();
// For all preferences, attach an OnPreferenceChangeListener so the UI summary can be
// updated when the preference changes.
}
public static class MyPreferenceFragment extends PreferenceFragment implements Preference.OnPreferenceChangeListener {
@Override
public void onCreate(final Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.pref_details);
bindPreferenceSummaryToValue(findPreference(getString(R.string.pref_location_key)));
}
private void bindPreferenceSummaryToValue(Preference preference) {
// Set the listener to watch for value changes.
preference.setOnPreferenceChangeListener(this);
// Trigger the listener immediately with the preference's
// current value.
onPreferenceChange(preference,
PreferenceManager
.getDefaultSharedPreferences(preference.getContext())
.getString(preference.getKey(), ""));
}
public boolean onPreferenceChange(Preference preference, Object value) {
String stringValue = value.toString();
if (preference instanceof ListPreference) {
// For list preferences, look up the correct display value in
// the preference's 'entries' list (since they have separate labels/values).
ListPreference listPreference = (ListPreference) preference;
int prefIndex = listPreference.findIndexOfValue(stringValue);
if (prefIndex >= 0) {
preference.setSummary(listPreference.getEntries()[prefIndex]);
}
} else {
// For other preferences, set the summary to the value's simple string representation.
preference.setSummary(stringValue);
Log.v("onpreferencechange",stringValue);
}
return true;
}
}
代替添加方法
bindPreferenceSummaryToValue(Preference preference) &
onPreferenceChange(Preference preference, Object value)
在主SettingsActivity类中创建一个实现Preference的片段类.OnPreferenceChangeListener在其中添加这两种方法.
inside the main SettingsActivity class create a fragment class which implements the Preference.OnPreferenceChangeListener add the both the methods inside it.
查看提供的代码
希望有帮助
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