如何在PreferenceFragmentCompat中单击时触发事件
如何在PreferenceFragmentCompat中单击时触发事件
提问于 2019-11-02 23:05:53
我用雄激素。在设置片段中，我希望创建“首选项”按钮，并单击它们来触发一些单独的事件。
如何对特定的首选项实现单击侦听器？
这是我的准则：
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.appcompat.widget.Toolbar;
import androidx.preference.PreferenceFragmentCompat;
import androidx.preference.PreferenceManager;
import androidx.preference.PreferenceScreen;
public class SettingsFragment extends PreferenceFragmentCompat {
@Override
public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
addPreferencesFromResource(R.xml.preference);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = super.onCreateView(inflater, container, savedInstanceState);
view.setBackgroundColor(getResources().getColor(R.color.graylight));
Toolbar toolbar = (Toolbar) getActivity().findViewById(R.id.toolbar);
toolbar.setTitle(R.string.action_settings);
toolbar.setLogo(R.drawable.ic_settings_white_24dp);
PreferenceManager preferenceManager = getPreferenceManager();
PreferenceScreen preferenceScreen = getPreferenceScreen();
return view;
}
}和XML：
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<PreferenceCategory
android:title="@string/setting_person"
app:initialExpandedChildrenCount="0"
app:key="profile_set">
<Preference
android:id="@+id/preference2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:key="button1"
android:summary="@string/setting_person_data"
android:title="@string/setting_person_reg"
app:icon="@drawable/ic_assignment" />
<Preference
android:key="button"
android:summary="@string/setting_avatar"
android:title="@string/setting_avatar_chg"
app:icon="@drawable/ic_wallpaper_black_24dp" />
</PreferenceCategory>
</PreferenceScreen>因此，我想在MainActivity中单击触发器一个事件。但是这是另一个问题，至少现在我应该听一听这个事件，例如按下按钮的键调用Toast。
回答 2
Stack Overflow用户
回答已采纳
发布于 2019-11-03 22:52:45
经过多次折磨后，找到了如下解决方案：(对于AndroidX)
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.appcompat.widget.Toolbar;
import androidx.preference.Preference;
import androidx.preference.PreferenceFragmentCompat;
public class SettingsFragment extends PreferenceFragmentCompat {
@Override
public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
addPreferencesFromResource(R.xml.preference);
Preference preferenceMap = findPreference("button");
preferenceMap.setOnPreferenceClickListener(
new Preference.OnPreferenceClickListener() {
@Override
public boolean onPreferenceClick(Preference arg0) {
getActivity().onBackPressed();
((MainActivity) getActivity()).injectSetting("map");
return true;
}
});
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = super.onCreateView(inflater, container, savedInstanceState);
view.setBackgroundColor(getResources().getColor(R.color.graylight));
Toolbar toolbar = (Toolbar) getActivity().findViewById(R.id.toolbar);
toolbar.setTitle(R.string.action_settings);
toolbar.setLogo(R.drawable.ic_settings_white_24dp);
return view;
}
}在XML中，androidx.preference被添加到元素中：
<?xml version="1.0" encoding="utf-8"?>
<androidx.preference.PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<androidx.preference.PreferenceCategory
android:title="@string/setting_person"
app:initialExpandedChildrenCount="1"
app:key="profile_set">
<androidx.preference.Preference
android:id="@+id/preference1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:key="button"
android:summary="@string/setting_person_data"
android:title="@string/setting_person_reg"
app:icon="@drawable/ic_assignment" />
<androidx.preference.Preference
android:id="@+id/preference2"
android:key="button2"
android:summary="@string/setting_avatar"
android:title="@string/setting_avatar_chg"
app:icon="@drawable/ic_wallpaper_black_24dp" />
</androidx.preference.PreferenceCategory>
</androidx.preference.PreferenceScreen>不要忘记在build.gradle依赖项上：
implementation 'androidx.preference:preference:1.1.0'也许有人会需要)
Stack Overflow用户
发布于 2019-11-02 23:19:38
找到的首选项，然后在它上设置一个单击监听器。
public class SettingsFragment extends PreferenceFragmentCompat {
@Override
public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
addPreferencesFromResource(R.xml.preference);
Preference preference = findPreference("button1");
preference.setOnClickListener(new OnPreferenceClickListener() {
@Override
public boolean onPreferenceClick(Preference p) {
// Handle preference click
}
});
}
}请查阅有关使用首选项的文档：
https://developer.android.com/reference/androidx/preference/package-summary.html https://developer.android.com/reference/androidx/preference/PreferenceFragmentCompat.html https://developer.android.com/reference/androidx/preference/PreferenceFragmentCompat.html#findPreference(java.lang.CharSequence) https://developer.android.com/reference/androidx/preference/Preference.OnPreferenceClickListener.html
希望这能帮上忙！
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/58676040
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