我無法解決錯誤的問題：incompatible types: no unique maximal instance exists for type variable T with upper bounds com.velocat.cmap.Preference,androidx.preference.Preference        Preference preference = findPreference("button");                                              ^  where T is a type-variable:    T extends androidx.preference.Preference declared in method <T>findPreference(CharSequence)SettingsFragment.javaimport android.os.Bundle;import android.preference.Preference;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import androidx.preference.PreferenceFragmentCompat;public class SettingsFragmentActivity extends PreferenceFragmentCompat {    Preference preference;    @Override    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {        addPreferencesFromResource(R.xml.setting);        Preference preference = findPreference("preference1");    }    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {        View view = super.onCreateView(inflater, container, savedInstanceState);        return view;    }}buld.gradle的一部分dependencies {    implementation fileTree(dir: 'libs', include: ['*.jar'])    implementation 'androidx.appcompat:appcompat:1.1.0'    implementation 'androidx.legacy:legacy-support-v4:1.0.0'    implementation 'com.google.android.material:material:1.0.0'    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'    implementation 'androidx.navigation:navigation-fragment:2.1.0'    implementation 'androidx.navigation:navigation-ui:2.1.0'    implementation 'com.google.android.gms:play-services-location:17.0.0'    testImplementation 'junit:junit:4.12'    androidTestImplementation 'androidx.test.ext:junit:1.1.1'    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'    implementation 'androidx.preference:preference:1.1.0'}我重新閱讀了搜索中所有可能的內容，但沒有找到問題的解決方案。有誰知道如何消除這個錯誤？如果您對這個主題有任何澄清，我將不勝感激。