Question

我在onCreate中生成SettingsFragment，然后根据用户输入更改内容布局。但是在用户选择返回后，我将setContentLayout设置为第一个，但SettingsFragment分配器为。我的意思是这就像将能见度设置为GONE。我希望它看起来正常。

我尝试过的方法： 1.将此getSupportFragmentManager（）...放入if（savedInstanceState == null）块中。 2.复制getSupportFragmentManaga ...，然后将其粘贴到goToSettingsRoot（View view）{..}

方法中

我有包含以下内容的SettingsActivity：

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.settings_activity);
        .
        .

        getSupportFragmentManager()
                .beginTransaction()
                .replace(R.id.settings, new SettingsFragment())
                .commit();
        .
        .
    }
    .
    .
    public static class SettingsFragment extends PreferenceFragmentCompat {
        @Override
        public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
            setPreferencesFromResource(R.xml.root_preferences, rootKey);
        }
    }
    .
    .
    public void openProfileSettings(View view) {
        setContentView(R.layout.user_details);
        .
        .
    }

    public void goToSettingsRoot(View view) {
        setContentView(R.layout.settings_activity);
    }

settings_activity.xml：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:id="@+id/settings_profile"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:clickable="true"
        android:onClick="openProfileSettings"
        android:background="?attr/selectableItemBackground">

        <ImageView
            android:id="@+id/imageView"
            android:layout_width="40sp"
            android:layout_height="40sp"
            android:src="@drawable/ic_profile_dark"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Profile"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toEndOf="@+id/imageView"
            app:layout_constraintTop_toTopOf="parent" />

    </androidx.constraintlayout.widget.ConstraintLayout>

    <FrameLayout
        android:id="@+id/settings"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
</LinearLayout>

root_preferences.xml：

<PreferenceScreen xmlns:app="http://schemas.android.com/apk/res-auto"

    <PreferenceCategory
        app:icon="@drawable/ic_settings_dark"
        app:title="Settings">

        <SwitchPreferenceCompat
            app:key="sync"
            app:summaryOff="q"
            app:summaryOn="w"
            app:title="e" />

        <SwitchPreferenceCompat
            app:dependency="sync"
            app:key="attachment"
            app:summaryOff="z"
            app:summaryOn="y"
            app:title="x" />

    </PreferenceCategory>

</PreferenceScreen>

任何帮助将不胜感激。

更改布局后的设置片段分配器

0 个答案: