我用的是androidx。在設置片段中，我想創建“首選項”按鈕并單擊它們以觸發一些單獨的事件。如何在特定首選項上實現點擊偵聽器？這是我的一些代碼：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" </PreferenceCategory></PreferenceScreen>結果我想在MainActivity中點擊觸發一個事件。但這是另一個問題，現在至少我應該監聽該事件，例如通過按下按鈕的按鍵來調用 Toast。
2 回答
蠱毒傳說
TA貢獻1895條經驗 獲得超3個贊
找到首選項，然后在其上設置點擊偵聽器。
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
}
});
}
}
請查看有關使用首選項的文檔：
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
希望有幫助！
暮色呼如
TA貢獻1853條經驗 獲得超9個贊
經過一番折騰，找到解決辦法如下：（針對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;
}
}
并在 XML androidx.preference 中添加到元素中：
<?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>
并且不要忘記 build.gradle 依賴項：
implementation 'androidx.preference:preference:1.1.0'
也許有人會需要））
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