goraga1 :
I am trying to implement night mode, but I have issues: CardView doesn't change color to night value but activity correctly changes its background to night color values.
Please help to understand the issue.
MainActivity
public class NewFinishActivity extends AppCompatActivity {
@BindView(R.id.finishRecycler)
RecyclerView finishRecycler;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
setContentView(R.layout.activity_new_finish);
ButterKnife.bind(this);
LevelRecyclerAdapter mAdapter = new LevelRecyclerAdapter(getApplicationContext(), new ArrayList<>());
finishRecycler.setAdapter(mAdapter);
}
}
MainActivity layout
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/background_color"
tools:context=".activities.NewFinishActivity">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/finishRecycler"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/background_color"
android:orientation="vertical"
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />
</FrameLayout>
Adapter
public class LevelRecyclerAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private List<UserLevel> mItems;
private Context mContext;
public LevelRecyclerAdapter(Context context, List<UserLevel> items) {
mContext = context;
mItems = items;
}
@NonNull
@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
AbstractCard card;
card = new LevelCardView(mContext, parent);
return card;
}
@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, int position) {
if (!mItems.isEmpty()) {
UserLevel data = mItems.get(position);
LevelCardView card = (LevelCardView) viewHolder;
card.bind(data);
}
}
@Override
public int getItemCount() {
return 5;
}
public void update(List<UserLevel> items) {
mItems = items;
notifyDataSetChanged();
}
}
RecyclerView.ViewHolder
public class LevelCardView extends AbstractCard {
Context mContext;
@BindView(R.id.title)
TextView title;
@BindView(R.id.levelCheck)
AppCompatImageView levelCheck;
@BindView(R.id.levelCard)
CardView levelCard;
public LevelCardView(Context context, ViewGroup parent) {
this(context, LayoutInflater.from(context).inflate(R.layout.card_level, parent, false));
}
private LevelCardView(Context context, View view) {
super(view, context);
mContext = context;
try {
ButterKnife.bind(this, view);
} catch (Exception e) {
e.printStackTrace();
}
}
RecyclerView.ViewHolder xml
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="@+id/levelCard"
android:layout_width="match_parent"
android:layout_height="90dp"
android:layout_gravity="center"
android:layout_margin="5dp"
card_view:cardBackgroundColor="@color/background_color_card"
card_view:cardCornerRadius="2dp"
card_view:cardElevation="@dimen/card_evalation">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:padding="15dp">
<TextView
android:id="@+id/title"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:drawableLeft="@drawable/ic_goal_1"
android:fontFamily="@font/roboto"
android:gravity="center"
android:text="Lose Fat"
android:textColor="@color/textColorStandard"
android:textSize="20dp" />
</RelativeLayout>
<androidx.appcompat.widget.AppCompatImageView
android:id="@+id/levelCheck"
android:layout_width="70dp"
android:visibility="gone"
android:layout_height="match_parent"
android:layout_gravity="end"
android:scaleType="centerCrop"
app:srcCompat="@drawable/gender_selected" />
</FrameLayout>
</androidx.cardview.widget.CardView>
colors.xml
<color name="textColorStandard">#282b35</color>
<color name="background_color">#fdfdfdfd</color>
<color name="background_color_card">#fff</color>
<color name="textColorStandardTransparent">#B222273D</color>
colors.xml NIGHT
<color name="textColorStandard">#FCFCFC</color>
<color name="background_color">#14182A</color>
<color name="background_color_card">#2F3550</color>
<color name="textColorAlwaysStandard">#282b35</color>
azizbekian :
You are using incorrect context. Instead of using context of the application you should be using context of the activity.
Instead of performing:
card = new LevelCardView(mContext, parent);
Perform following:
card = new LevelCardView(parent.getContext(), parent);
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