1

这里很奇怪的问题。我带着它兜圈子！

日/夜模式似乎在我的应用程序中运行良好......但INVISIBLE仅适用于可绘制对象，它不适用于初始加载。

我有 2 个 xml 可绘制文件夹： drawable并drawable-night具有匹配的 .png 文件名

我有两个值文件夹： valueswith colors.xml, styles.xml, ic_launcher_background.xmland strings.xml- and also - values-nightwith colors.xmlandstyles.xml

在应用程序中，我使用切换开关为日/夜模式设置模式，如下所示。这似乎工作正常。

dayNightMode.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        if (isChecked) {
            System.out.println("Not Checked");
            InitApplication.getInstance().setIsNightModeEnabled(true, context);
            Intent intent = getIntent();
            intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
            finish();
            startActivity(intent);
            dayNightMode.setText("Night Mode");
        } else {
            System.out.println("Checked");
            InitApplication.getInstance().setIsNightModeEnabled(false, context);
            Intent intent = getIntent();
            intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
            finish();
            startActivity(intent);
            dayNightMode.setText("Day Mode");
        }
    }
});

上面代码调用的InitApplication类是：

package com.dmurphy.remotescrumpoker;

    import android.app.Application;
    import android.content.Context;
    import android.content.SharedPreferences;
    import android.preference.PreferenceManager;
    import android.util.Log;

    public class InitApplication extends Application {
        public static final String NIGHT_MODE = "NIGHT_MODE";
        private boolean isNightModeEnabled = false;

        private static InitApplication singleton = null;

        public static InitApplication getInstance() {

            if(singleton == null)
            {
                singleton = new InitApplication();
            }
            return singleton;
        }

        @Override
        public void onCreate() {
            super.onCreate();
            singleton = this;
            Context appContext = this.getApplicationContext();

            SharedPreferences sharedPreferences = appContext.getSharedPreferences("com.dmurphy.remotescrumpoker", Context.MODE_PRIVATE);
            isNightModeEnabled = sharedPreferences.getBoolean(NIGHT_MODE, true);
            Log.i("onCreate1_", String.valueOf(isNightModeEnabled));
        }

        public boolean isNightModeEnabled(Context context) {
            SharedPreferences sharedPreferences = context.getSharedPreferences("com.dmurphy.remotescrumpoker", Context.MODE_PRIVATE);
            isNightModeEnabled = sharedPreferences.getBoolean(NIGHT_MODE, true);
            Log.i("onCreate11_", String.valueOf(isNightModeEnabled));
            return isNightModeEnabled;
        }

        public void setIsNightModeEnabled(boolean isNightModeEnabled, Context context) {
            this.isNightModeEnabled = isNightModeEnabled;
            Log.i("onCreate111_", String.valueOf(isNightModeEnabled));

            SharedPreferences sharedPreferences = context.getSharedPreferences("com.dmurphy.remotescrumpoker", Context.MODE_PRIVATE);
            sharedPreferences.edit().putBoolean(NIGHT_MODE, isNightModeEnabled).apply();
            Log.i("onCreate1111_", String.valueOf(isNightModeEnabled));
        }
    }

我也有Activity_Poker活动。一切正常，如果我更改开关，应用程序就会更改。

我也有一个启动活动Activity_Splash，并在onCreate我检查模式：

if (InitApplication.getInstance().isNightModeEnabled(context)) {
    AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
    Log.i(TAG, "onCreate1_" + "Mode Night Yes");
} else {
    AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
    Log.i(TAG, "onCreate1_" + "Mode Night No");
}
setContentView(R.layout.activity__splash);

启动工作正常。当我关闭应用程序并重新启动时，两种模式的背景颜色等都是正确的。我VISIBLE在活动中始终有 3 个可绘制对象。这些在两种替代模式之间也可以很好地改变。

但是，我有 9 个默认情况下不可见的可绘制对象。这些在创建时变为可见，但它们总是在每次加载时显示 DAY_MODE 。

注意： drawable不在错误的文件夹中。正确的颜色位于正确的文件夹中。9 个不工作的 .png 文件的颜色与VISIBLE工作正常的 3 个可绘制对象相匹配。只是默认INVISIBLE的不是从drawables-night文件夹中填充的onCreate。

如果我使用 inApp 用户菜单重新启动 Activity，则使用适用的NIGHT_MODE或DAY_MODE可绘制对象正确重新创建 Activity。但是 NIGHT_MODE 可绘制对象（默认情况下是不可见的）永远不会在启动时使用。

预期结果：在启动时，不可见的 ImageView 更改为可见并填充drawables为 forDAY_MODE或drawables-nightfor NIGHT_MODE。

实际结果：在启动时，不可见的 ImageView 更改为可见并填充drawables为 forDAY_MODE或drawablesfor NIGHT_MODE。

Activity_Poker.java

public class Activity_Poker extends AppCompatActivity {

[snip]
        Activity passedActivity = Activity_Poker.this;
[snip]
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_poker);
            drawerLayout = findViewById(R.id.drawer_layout);
    [snip]
            final String methodName = "onCreate";
            mAuth = FirebaseAuth.getInstance();
            String userId = mAuth.getUid();
    [snip]
            //Setup the UI for the selected game type
            int cardType = sharedPreferences.getInt("cardType", 0);
            Log.i(TAG, "Selected SharedPref Record: " + cardType);
            callSetupUI.setupLocalActive(passedActivity, cardType);
    [snip]
}

注意： cardType上面正确显示了 Logcat 中的 == 5。

设置UI.java

    public void setupLocalActive(Activity passedActivity, int cardType) {

        ImageView card4 = passedActivity.findViewById(R.id.pokerCard4);
        ImageView card4img = passedActivity.findViewById(R.id.pokerCard4img);
        ImageView card5 = passedActivity.findViewById(R.id.pokerCard5);
        ImageView card5img = passedActivity.findViewById(R.id.pokerCard5img);
        ImageView card6 = passedActivity.findViewById(R.id.pokerCard6);
        ImageView card6img = passedActivity.findViewById(R.id.pokerCard6img);
        ImageView card7 = passedActivity.findViewById(R.id.pokerCard7);
        ImageView card7img = passedActivity.findViewById(R.id.pokerCard7img);
        ImageView card8 = passedActivity.findViewById(R.id.pokerCard8);
        ImageView card8img = passedActivity.findViewById(R.id.pokerCard8img);
        ImageView card9 = passedActivity.findViewById(R.id.pokerCard9);
        ImageView card9img = passedActivity.findViewById(R.id.pokerCard9img);
        ImageView card11 = passedActivity.findViewById(R.id.pokerCard11);
        ImageView card11img = passedActivity.findViewById(R.id.pokerCard11img);

        TextView card4TextView = passedActivity.findViewById(R.id.textViewPokerCard4);
        TextView card5TextView = passedActivity.findViewById(R.id.textViewPokerCard5);
        TextView card6TextView = passedActivity.findViewById(R.id.textViewPokerCard6);
        TextView card7TextView = passedActivity.findViewById(R.id.textViewPokerCard7);
        TextView card8TextView = passedActivity.findViewById(R.id.textViewPokerCard8);
        TextView card9TextView = passedActivity.findViewById(R.id.textViewPokerCard9);
        TextView card10TextView = passedActivity.findViewById(R.id.textViewPokerCard10);
        TextView card11TextView = passedActivity.findViewById(R.id.textViewPokerCard11);
        TextView card12TextView = passedActivity.findViewById(R.id.textViewPokerCard12);
        TextView card13TextView = passedActivity.findViewById(R.id.textViewPokerCard13);
        TextView card14TextView = passedActivity.findViewById(R.id.textViewPokerCard14);
        TextView card15TextView = passedActivity.findViewById(R.id.textViewPokerCard15);

        Log.i(TAG, "Selected SharedPref Record UI CardType into Switch: " + cardType);

        switch (cardType){
            case 1:
[snip]
            case 2:
[snip]
            case 3:
[snip]
            case 4:
[snip]
            case 5:
                Log.i(TAG, "Selected SharedPref Record Setting UI: " + cardType);
                card10.setVisibility(card10.INVISIBLE);
                card12.setVisibility(card12.INVISIBLE);
                card13.setVisibility(card13.INVISIBLE);
                card14.setVisibility(card14.INVISIBLE);
                card15.setVisibility(card15.INVISIBLE);
                card4TextView.setVisibility(card4TextView.INVISIBLE);
                card5TextView.setVisibility(card5TextView.INVISIBLE);
                card6TextView.setVisibility(card6TextView.INVISIBLE);
                card7TextView.setVisibility(card7TextView.INVISIBLE);
                card8TextView.setVisibility(card8TextView.INVISIBLE);
                card9TextView.setVisibility(card9TextView.INVISIBLE);
                card10TextView.setVisibility(card10TextView.INVISIBLE);
                card11TextView.setVisibility(card10TextView.INVISIBLE);
                card12TextView.setVisibility(card12TextView.INVISIBLE);
                card13TextView.setVisibility(card13TextView.INVISIBLE);
                card14TextView.setVisibility(card14TextView.INVISIBLE);
                card15TextView.setVisibility(card15TextView.INVISIBLE);

                card4img.setImageResource(R.drawable.chihuahua);
                card5img.setImageResource(R.drawable.dachshund);
                card6img.setImageResource(R.drawable.beagle);
                card7img.setImageResource(R.drawable.spaniel);
                card8img.setImageResource(R.drawable.boxer);
                card9img.setImageResource(R.drawable.shepard);
                card11img.setImageResource(R.drawable.dane);

                card4img.setVisibility(card4img.VISIBLE);
                card5img.setVisibility(card5img.VISIBLE);
                card6img.setVisibility(card6img.VISIBLE);
                card7img.setVisibility(card7img.VISIBLE);
                card8img.setVisibility(card8img.VISIBLE);
                card9img.setVisibility(card9img.VISIBLE);
                card11img.setVisibility(card11img.VISIBLE);

                break;

            default:
[snip]
                break;
        }

    }

活动扑克.xml

    <?xml version="1.0" encoding="utf-8"?>
    <androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:id="@+id/drawer_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fitsSystemWindows="true"
        tools:layout_editor_absoluteX="16dp"
        tools:layout_editor_absoluteY="260dp">

        <androidx.core.widget.NestedScrollView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.5"
            app:layout_constraintStart_toStartOf="parent"
            tools:layout_editor_absoluteY="8dp">

            <androidx.constraintlayout.widget.ConstraintLayout
                android:id="@+id/content_frame"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginBottom="32dp">

[snip]
        <ImageView
            android:id="@+id/pokerCard5"
            android:layout_width="88dp"
            android:layout_height="104dp"
            android:layout_marginTop="16dp"
            android:background="@color/colorPrimary"
            android:contentDescription="@string/localCardSelectcontent"
            android:onClick="card8clicked"
            app:layout_constraintEnd_toStartOf="@+id/pokerCard6"
            app:layout_constraintHorizontal_bias="0.5"
            app:layout_constraintStart_toEndOf="@+id/pokerCard4"
            app:layout_constraintTop_toBottomOf="@+id/pokerCard2" />

        <ImageView
            android:id="@+id/pokerCard5img"
            android:layout_width="72dp"
            android:layout_height="88dp"
            android:layout_marginStart="8dp"
            android:layout_marginTop="8dp"
            android:contentDescription="@string/localCardSelectcontent"
            android:onClick="localcard5clicked"
            android:visibility="invisible"
            app:layout_constraintStart_toStartOf="@+id/pokerCard5"
            app:layout_constraintTop_toTopOf="@+id/pokerCard5"
            app:srcCompat="@drawable/dachshund" />

        <TextView
            android:id="@+id/textViewPokerCard5"
            android:layout_width="88dp"
            android:layout_height="104dp"
            android:onClick="localcard5clicked"
            android:gravity="center"
            android:includeFontPadding="false"
            android:textColor="@color/colorPrimaryDark"
            android:textSize="44sp"
            android:textStyle="normal|bold"
            app:layout_constraintStart_toStartOf="@+id/pokerCard5"
            app:layout_constraintTop_toTopOf="@+id/pokerCard5" />

        <ImageView
            android:id="@+id/pokerCard4"
            android:layout_width="88dp"
            android:layout_height="104dp"
            android:background="@color/colorPrimary"
            android:contentDescription="@string/localCardSelectcontent"
            android:onClick="card5clicked"
            android:visibility="visible"
            app:layout_constraintBottom_toBottomOf="@+id/pokerCard5"
            app:layout_constraintEnd_toStartOf="@+id/pokerCard5"
            app:layout_constraintHorizontal_bias="0.5"
            app:layout_constraintStart_toStartOf="parent" />

        <ImageView
            android:id="@+id/pokerCard4img"
            android:layout_width="72dp"
            android:layout_height="88dp"
            android:layout_marginStart="8dp"
            android:layout_marginTop="8dp"
            android:contentDescription="@string/localCardSelectcontent"
            android:onClick="localcard4clicked"
            android:visibility="invisible"
            app:layout_constraintStart_toStartOf="@+id/pokerCard4"
            app:layout_constraintTop_toTopOf="@+id/pokerCard4"
            app:srcCompat="@drawable/chihuahua" />

        <TextView
            android:id="@+id/textViewPokerCard4"
            android:layout_width="88dp"
            android:layout_height="104dp"
            android:onClick="localcard4clicked"
            android:gravity="center"
            android:includeFontPadding="false"
            android:textColor="@color/colorPrimaryDark"
            android:textSize="44sp"
            android:textStyle="normal|bold"
            app:layout_constraintStart_toStartOf="@+id/pokerCard4"
            app:layout_constraintTop_toTopOf="@+id/pokerCard4" />

    </androidx.constraintlayout.widget.ConstraintLayout>

</androidx.core.widget.NestedScrollView>

<com.google.android.material.navigation.NavigationView
    android:id="@+id/nav_view"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    android:fitsSystemWindows="true"
    android:onClick="onSwitchChange"
    app:headerLayout= "@layout/nav_header_main"
    app:menu="@xml/drawer_view" >

</com.google.android.material.navigation.NavigationView>

4

1 回答 1

0

这可能不是正确的解决方案，但我实施了一种解决方法。

在Activity_Splash我添加了一个布尔值来表明它是初始启动。

SharedPreferences sharedPreferences = Activity_Splash.this.getSharedPreferences("com.dmurphy.remotescrumpoker", Context.MODE_PRIVATE);
sharedPreferences.edit().putBoolean("initialStartup", true).apply();

在 Activity_Poker 中，我检索了布尔值，如果启用了 NIGHT_MODE 并且“initialStartup”为真，我将重新启动 Activity_Poker 以重置 UI。

boolean initialStartup = sharedPreferences.getBoolean("initialStartup", false);
if (InitApplication.getInstance().isNightModeEnabled(context) && initialStartup) {

    callUserMenu.menuAction(TAG, methodName, context, 5, passedActivity); //This triggers my Intent to restart the activity
    sharedPreferences.edit().remove("initialStartup").apply();
}

仍然不知道实际上是什么导致了这种情况。

于 2019-11-28T20:17:18.153 回答