PreferenceFragment或PreferenceFragmentCompat

Question

我正在使用PreferenceFragment并尝试调用DialogFragment

SettingsActivity.java

public class SettingsActivity extends AppCompatActivity{

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getFragmentManager()
        .beginTransaction()
        .replace(android.R.id.content, new SettingsFragment())
        .commit();
    }

    public static class SettingsFragment extends PreferenceFragment {

        @Override
        public void onCreate(@Nullable Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.pref_settings);

            Preference switchPreference = (SwitchPreference) findPreference("switch_preference_1");
            switchPreference.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
                @Override
                public boolean onPreferenceChange(Preference preference, Object newValue) {
                    AcceptDialog dialog = new AcceptDialog();
                    dialog.setTargetFragment(SettingsFragment.this, 0);
                    return true;
                }
            });
        }
    }
}

AcceptDialog.java

public class AcceptDialog extends DialogFragment {
    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        new AlertDialog.Builder(getActivity())
                .setTitle("Title")
                .setMessage("Message")
                .create();
    }
}

和dialog.setTargetFragment( .)中的错误；

Wrong 1st argument type. Found: 'com.android.cmdev.prefcompattest.SettingsActivity.SettingsFragment', required: 'android.support.v4.app.Fragment'

我在PreferenceFragmentCompat上更改了PreferenceFragmentCompat，这个错误消失了，但是在片段事务中出现了新的错误。

getFragmentManager()
        .beginTransaction()
        .replace(android.R.id.content, new SettingsFragment())
        .commit();

错误：

Wrong 2nd argument type. Found: 'com.android.cmdev.prefcompattest.SettingsActivity.SettingsFragment', required: 'android.app.Fragment'

有什么不对，怎么纠正？

Answer 1

将getSupportFragmentManager与支持片段一起使用而不是getFragmentManager