Views losing margin when activity created - java

I have a strange behavior here
When I start this dialog (which is actually an activity with dialog Theme) the EditTexts are losing the left margin.
This is my XML
`<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/alert_root_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/primary">
<TextView
android:id="#+id/user_entry_hint"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:layout_marginTop="8dp"
android:text="#string/input_user"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.cardview.widget.CardView
android:id="#+id/user_edit_card"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:layout_marginEnd="20dp"
android:layout_marginBottom="20dp"
android:background="#color/icons"
app:cardCornerRadius="10dp"
app:cardElevation="10dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toBottomOf="#id/user_entry_hint">
<LinearLayout
android:id="#+id/editTextLinear"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/icons"
android:orientation="vertical">
<EditText
android:id="#+id/user_name_et"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="#font/comfortaa_medium"
android:hint="#string/userName"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:textColor="#color/primary_text"
android:textColorHint="#color/primary_text"
android:textSize="14sp" />
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:background="#color/primary_dark" />
<EditText
android:id="#+id/user_address_et"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="#font/comfortaa_medium"
android:hint="#string/userAddress"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:textColor="#color/primary_text"
android:textColorHint="#color/primary_text"
android:textSize="14sp" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/places_recycler_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/icons"
android:orientation="vertical"
android:padding="10dp"
app:layout_constrainedHeight="true" />
</LinearLayout>
</androidx.cardview.widget.CardView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:orientation="horizontal"
android:weightSum="2"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/user_edit_card">
<Button
android:id="#+id/cancel_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="10dp"
android:layout_weight="1"
android:text="#string/dialog_cancel"
android:textAllCaps="false" />
<Button
android:id="#+id/save_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_weight="1"
android:text="#string/dialog_save"
android:textAllCaps="false" />
</LinearLayout></androidx.constraintlayout.widget.ConstraintLayout>
`
And this is how I initialize it in activity.
public class AlertDialogActivity extends AppCompatActivity implements PlacesAutoCompleteAdapter.ClickListener {
private static final String TAG = "AlertDialogActivity";
private ActivityAlertDialogBinding binding;
private EditText userNameEdit;
private EditText userAddressEdit;
private Button saveUserButton;
private Button cancelButton;
private RecyclerView recyclerViewPlaces;
private PlacesAutoCompleteAdapter adapter;
private UserViewModel userViewModel;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = ActivityAlertDialogBinding.inflate(getLayoutInflater());
View view = binding.getRoot();
setContentView(view);
this.setFinishOnTouchOutside(false);
initViews(binding);
private void initViews(ActivityAlertDialogBinding binding) {
userNameEdit = binding.userNameEt;
userAddressEdit = binding.userAddressEt;
saveUserButton = binding.saveButton;
cancelButton = binding.cancelButton;
recyclerViewPlaces = binding.placesRecyclerView;
}
I am trying to figure out why the views lose margin and when the Edittext is gaining focus the margins are restored
The Ui works fine on emulator. The video is from my device.


I would first remove all match_parent sizes from the children of the ConstraintLayout and replace with 0dp and the appropriate constraints. See the "important" comment here.
Important: MATCH_PARENT is not recommended for widgets contained in a ConstraintLayout. Similar behavior can be defined by using MATCH_CONSTRAINT with the corresponding left/right or top/bottom constraints being set to "parent".

Related

Constraint layout has space bottom and top

I'm building an app using Constraint layout, but it has extra space bottom and top. I can't find where they come from. I checked maybe ten times from top to bottom all code but there is no margin or padding or anything else for it.
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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/relativeLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/black"
android:paddingLeft="0dp"
android:paddingTop="0dp"
android:paddingRight="0dp"
android:paddingBottom="0dp">
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/Brand"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toTopOf="#id/guideline"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:orientation="horizontal"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<TextView
android:id="#+id/brandname"
style="#style/viewParent.headerText"
android:text="Did"
android:textColor="#color/white" />
<TextView
android:id="#+id/brandname2"
style="#style/viewParent.headerText2"
android:layout_toRightOf="#id/brandname"
android:text="You"
android:textColor="#color/yellow" />
<TextView
style="#style/viewParent.headerText2"
android:layout_toRightOf="#id/brandname2"
android:text="Know!"
android:textColor="#color/red"
android:textStyle="bold|italic" />
</RelativeLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/container_main"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_margin="4dp"
android:background="#drawable/card_bg"
android:paddingLeft="16dp"
android:paddingRight="16dp"
app:layout_constraintBottom_toTopOf="#id/guideline2"
app:layout_constraintEnd_toEndOf="#id/guidelineyazisag"
app:layout_constraintStart_toStartOf="#id/guidelineyazisol"
app:layout_constraintTop_toBottomOf="#id/guideline">
<TextView
android:id="#+id/activity_main_text_view_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:text="simple Title Text"
android:textColor="#5E4C4C"
android:textStyle="bold"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/activity_main_did_u_know"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:text="Category"
android:textColor="#5E4C4C"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.core.widget.NestedScrollView
android:id="#+id/scrollview"
android:layout_width="match_parent"
android:layout_height="0dp"
android:fillViewport="true"
app:layout_constraintBottom_toTopOf="#id/activity_main_image_view"
app:layout_constraintTop_toBottomOf="#id/activity_main_did_u_know">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="#id/activity_main_image_view"
app:layout_constraintTop_toBottomOf="#id/activity_main_did_u_know">
<TextView
android:id="#+id/factTextView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="8dp"
android:gravity="center_vertical|center_horizontal"
android:lineSpacingExtra="8dp"
android:padding="10dp"
android:text="Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged."
android:textColor="#000000"
android:textSize="16dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>
<ImageView
android:id="#+id/activity_main_image_view"
android:layout_width="30dp"
android:layout_height="40dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:clickable="true"
android:src="#drawable/ic_share_black_24dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/scrollview" />
<ImageView
android:id="#+id/activity_main_fav_button"
android:layout_width="30dp"
android:layout_height="40dp"
android:layout_margin="16dp"
android:clickable="true"
android:src="#drawable/ic_favorite_border_black_24dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#id/scrollview" />
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/LeftRight"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toTopOf="#id/adView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/guideline2">
<ImageView
android:id="#+id/activity_main_left_button"
android:layout_width="60dp"
android:layout_height="60dp"
android:clickable="true"
android:src="#drawable/ic_previous"
android:elevation="3dp"
android:background="#drawable/okarka"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#id/guideline3"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="#+id/activity_main_right_button"
android:layout_width="60dp"
android:layout_height="60dp"
android:clickable="true"
android:src="#drawable/ic_next"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
android:background="#drawable/okarka"
app:layout_constraintStart_toEndOf="#+id/guideline3"
app:layout_constraintTop_toTopOf="parent" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.5" />
</androidx.constraintlayout.widget.ConstraintLayout>
<com.google.android.gms.ads.AdView xmlns:ads="http://schemas.android.com/apk/res-auto"
android:id="#+id/adView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
ads:adSize="SMART_BANNER"
ads:adUnitId="ca-app-pub-3940256099942544/6300978111"
ads:layout_constraintBottom_toBottomOf="parent"
ads:layout_constraintLeft_toLeftOf="parent"
ads:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#id/LeftRight" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.076" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.7" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guidelineyazisol"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.07" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guidelineyazisag"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.93" />
</androidx.constraintlayout.widget.ConstraintLayout>
I tried adding guidelines to 0 points in the bottom but it also starts in that space. I gave -(minus) values to margin and padding but doesn't work. I don't know what else to do. You can see from screenshots how it looks.
public class MainActivity extends AppCompatActivity {
private ColorWheel colorWheel = new ColorWheel();
private TextView factTextView;
private TextView textViewId;
private TextView textViewTableName;
ImageView tableImageView;
AdView adView;
ImageView shareImageView;
ImageView favImageView;
float x1,x2,y1,y2;
int i = 1;
int adCounter = 0;
private ConstraintLayout constraintLayout;
String fact;
ArrayList<Fact> favList = new ArrayList<>();
private InterstitialAd mInterstitial;
AdRequest interAdRequest;
int favId;
String favTable;
Typeface typeface;
List<Fact> mData;
private DatabaseFacts db;
GradientDrawable shape;
#SuppressLint({"ClickableViewAccessibility", "SetTextI18n"})
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
db = new DatabaseFacts(this);
db.copyDbIfNotExists();
shape = new GradientDrawable();
shape.setCornerRadius(40);
mData = new ArrayList<>();
MobileAds.initialize(this, "ca-app-pub-2469721886989416~7390658870");
adView = findViewById(R.id.adView);
AdRequest bannerAdRequest = new AdRequest.Builder().build();
adView.loadAd(bannerAdRequest);
interAdRequest = new AdRequest.Builder().build();
mInterstitial = new InterstitialAd(this);
mInterstitial.setAdUnitId("ca-app-pub-2469721886989416/9441000894");
mInterstitial.loadAd(interAdRequest);
factTextView = findViewById(R.id.factTextView);
constraintLayout = (ConstraintLayout) findViewById(R.id.container_main);
textViewId = findViewById(R.id.activity_main_text_view_id);
favImageView = findViewById(R.id.activity_main_fav_button);
shareImageView = findViewById(R.id.activity_main_image_view);
textViewTableName = findViewById(R.id.activity_main_did_u_know);
// tableImageView = findViewById(R.id.img_user);
// if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
// typeface = getResources().getFont(R.font.sourceserifproregular);
// }
factTextView.setTypeface(typeface);
Intent intent = getIntent();
final int choice = intent.getIntExtra("choice",0);
switch (choice) {
case 1:
textViewTableName.setText("General Facts");
factTextView.setText(db.getFact((readFromShared("defaultKey") - 1), DatabaseFacts.TABLE_GENERAL_NAME).getFact());
textViewId.setText("Fact " + (readFromShared("defaultKey") - 1) + " of " + db.getFactsCount(DatabaseFacts.TABLE_GENERAL_NAME));
if (db.getFact((readFromShared("defaultKey") - 1), DatabaseFacts.TABLE_GENERAL_NAME).isFavorite() == 0) {
favImageView.setImageResource(R.drawable.ic_favorite_border_black_24dp);
} else {
favImageView.setImageResource(R.drawable.ic_favorite_black_24dp);
}
ImageView leftClick = (ImageView) findViewById(R.id.activity_main_left_button);
leftClick.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
leftClickMethod("defaultKey", DatabaseFacts.TABLE_GENERAL_NAME);
}
});
ImageView rightClick = (ImageView) findViewById(R.id.activity_main_right_button);
rightClick.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
rightClickMethod("defaultKey",DatabaseFacts.TABLE_GENERAL_NAME);
return;
}
});
favImageView.setOnClickListener(v -> handleFavorites("defaultKey", DatabaseFacts.TABLE_GENERAL_NAME));
break;

Remove app:layout_constraintBottom_toTopOf="#id/guideline" from Brand and app:layout_constraintTop_toBottomOf="#id/LeftRight" from adView. You can't put constraints for Top and Bottom because it will center your View between those two constraints. Same about left and right (start, end), but you have match_parent here, so this problem doesn't occur (visualy - if you set wrap_content, view will go to the center too).

android.widget.RelativeLayout cannot be cast to androidx.recyclerview.widget.RecyclerView

I wrote a little code, but I had a problem. Error that I encounter as: android.widget.RelativeLayout cannot be cast to androidx.recyclerview.widget.RecyclerView
  I looked at the questions that look like this, but the answers that were given did not solve my problem. Can you help me?
Java code as:
public class Fehrest extends AppCompatActivity {
DatabaseManager dbManager = new DatabaseManager();
int tedad,tedad_fav;
private String[] Name, Text,Image,seen, English, Farsi;
private int[] id,fav,id_sen;
Items items = new Items();
SharedPreferences sharedP;
RecyclerView recyclerView;
Story_Adapter adapter;
ArrayList<Book_Items> MyArrayList = new ArrayList<>();
String button_name,tbl_name="story_tbl";
TextView txt_toolbar,txt_sen;
BrokenView brokenView;
BrokenTouchListener listener;
EditText edt_search;
LinearLayout lin_main;
RelativeLayout rlt_buttons;
boolean night_mode,show_english=true;
int day=0,date_mod,today;
Button btn_love,btn_pand,btn_tanz,btn_mazhabi;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.movies_list);
recyclerView = findViewById(R.id.rcl_movies);
edt_search = findViewById(R.id.edt_search);
rlt_buttons = findViewById(R.id.rlt_buttons);
txt_toolbar = findViewById(R.id.txt_toolbar);
lin_main = findViewById(R.id.lin_main);
txt_sen = findViewById(R.id.txt_sen);
btn_love = findViewById(R.id.btn_love);
btn_pand = findViewById(R.id.btn_pand);
btn_mazhabi = findViewById(R.id.btn_mazhabi);
btn_tanz = findViewById(R.id.btn_tanz);
brokenView = BrokenView.add2Window(Fehrest.this);
listener = new BrokenTouchListener.Builder(brokenView).build();
sharedP = getSharedPreferences(Items.SETTINGS, Context.MODE_PRIVATE);
night_mode = sharedP.getBoolean(Items.NIGHT_MODE,false);
today = sharedP.getInt(Items.TODAY,0);
date_mod = sharedP.getInt(Items.DATE_MODIFIED,0);
day = (today - date_mod);
get_night();
Get_sentence();
adapter = new Story_Adapter(this, MyArrayList);
recyclerView.setLayoutManager(new LinearLayoutManager(Fehrest.this,LinearLayoutManager.VERTICAL,false));
recyclerView.setAdapter(adapter);
button_name = getIntent().getStringExtra("button");
and this my xml code:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Fehrest"
android:orientation="vertical"
android:id="#+id/lin_main"
android:background="#drawable/background4">
<LinearLayout
android:id="#+id/lin_toolbar"
android:layout_width="match_parent"
android:layout_height="70dp"
android:layout_marginBottom="8dp"
android:background="#color/nephritis"
android:orientation="horizontal"
android:padding="5dp"
android:weightSum="7"
>
<EditText
android:id="#+id/edt_search"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="6"
android:background="#drawable/textviewstyle2"
android:gravity="center"
android:hint="جستجو..."
android:padding="4dp"
android:textColorHint="#color/White"
android:textColor="#color/White"
android:visibility="gone"/>
<TextView
android:id="#+id/txt_toolbar"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="6"
android:text="لیست خانوائخ خاا"
android:textColor="#color/White"
android:textSize="21sp"
android:fontFamily="#font/medium"/>
<ImageView
android:id="#+id/img_search"
android:layout_width="0dp"
android:layout_height="50dp"
android:layout_gravity="center"
android:layout_weight="1"
android:src="#drawable/magnify"
android:onClick="img_search_click"/>
</LinearLayout>
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/rcl_movies"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:visibility="gone"/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/rlt_buttons">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RelativeLayout
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:layout_marginTop="10dp"
android:layout_marginRight="20dp"
android:orientation="horizontal">
<TextView
android:id="#+id/txt_sen"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_gravity="center"
android:layout_marginStart="20dp"
android:layout_marginTop="15dp"
android:layout_marginEnd="20dp"
android:background="#drawable/textviewstyle"
android:fontFamily="#font/zahraroosta"
android:padding="8dp"
android:text="Sentence"
android:textColor="#color/description"
android:textSize="20sp"
android:textStyle="bold" />
<Button
android:id="#+id/btn_love"
android:layout_width="290dp"
android:layout_height="70dp"
android:layout_below="#id/txt_sen"
android:layout_alignParentStart="true"
android:layout_alignParentEnd="true"
android:layout_gravity="center"
android:layout_marginStart="20dp"
android:layout_marginTop="10dp"
android:layout_marginEnd="20dp"
android:background="#drawable/back_btn3"
android:fontFamily="#font/boldmayriad"
android:onClick="btn_click"
android:paddingEnd="40dp"
android:text="#string/euphorbiaceae"
android:textAllCaps="false"
android:textColor="#color/White"
android:textSize="24sp" />
This is part of my MLX code and the tags are not closed for this reason.

Can hide ProgressBar but cannot show it

I'm using the default ProgressBar widget, for indeterminate progress, in a Linear Layout with Style: #android:style/Widget.DeviceDefault.Light.ProgressBar.Small
If I start the activity with the ProgressBar VISIBLE and never make it INVISIBLE or GONE it shows ok. But if I put progressBar.setVisibility(progressBar.GONE); or progressBar.setVisibility(progressBar.INVISIBLE); anywhere in my code, the space for the ProgressBar is on the UI, but I cant see it.
I thought it might be a leaky parallel thread and removed all multi-threading from my app, but it still won't appear if INVISIBLE or GONE is anywhere in my code.
It works fine on other Activities.
Layout 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">
<ScrollView
android:id="#+id/myTeamsScrollView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
tools:layout_editor_absoluteY="8dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/content_frame"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:orientation="horizontal">
<LinearLayout
android:layout_width="32dp"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:layout_marginLeft="16dp"
android:orientation="vertical"
android:paddingTop="32dp">
<ImageView
android:id="#+id/menu1ImageView"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_gravity="center"
android:contentDescription="#string/userNavigationMenuButtonContent"
android:onClick="openDrawer"
app:srcCompat="#drawable/menu_icon" />
</LinearLayout>
</LinearLayout>
<EditText
android:id="#+id/enterNewTeamEditText"
android:layout_width="340dp"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:layout_gravity="center_horizontal"
android:contentDescription="#string/enterTeamNameEditTextcontent"
android:ems="10"
android:hint="#string/teamNameHint"
android:inputType="textEmailAddress"
android:textColor="#color/colorPrimary" />
<ProgressBar
android:id="#+id/myTeamsProgressBar"
style="#android:style/Widget.DeviceDefault.Light.ProgressBar.Small"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="16dp"
android:alpha="1"
android:foregroundTint="#FFFFCC"
android:progressTint="#FFFFCC"
android:visibility="visible" />
<TextView
android:id="#+id/deckTypeTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="16dp"
android:contentDescription="#string/remotePokerlabelcontent"
android:enabled="false"
android:text="#string/newTeamDeckType"
android:textAlignment="center"
android:textColor="#color/colorPrimary"
android:textSize="14sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/remotePokerTextView" />
<Spinner
android:id="#+id/newTeamDeckTypeSpinner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="8dp"
android:background="#drawable/spinner"
android:textAlignment="center"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/enterNewTeamEditText" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:orientation="horizontal"
android:paddingTop="16dp">
<Button
android:id="#+id/createTeamButton"
android:layout_width="wrap_content"
android:layout_height="32dp"
android:layout_gravity="center_horizontal"
android:layout_marginEnd="8dp"
android:layout_weight="1"
android:background="#color/colorButton"
android:contentDescription="#string/createTeamButtoncontent"
android:fontFamily="#string/fontfamily"
android:onClick="createTeam"
android:text="Create Team"
android:textColor="#color/colorPrimaryDark"
android:textSize="14sp" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:orientation="horizontal"
android:paddingTop="16dp">
<Button
android:id="#+id/receivedJoinRequestsButton"
android:layout_width="147dp"
android:layout_height="wrap_content"
android:layout_marginEnd="16dp"
android:background="#color/colorButton"
android:contentDescription="#string/createTeamButtoncontent"
android:fontFamily="#string/fontfamily"
android:onClick="showJoinRequests"
android:text="#string/myTeamsJoinRequestsButton"
android:textColor="#color/colorPrimaryDark"
android:textSize="14sp"
android:layout_weight="1" />
<Switch
android:id="#+id/teamTypesSwitch"
android:layout_width="143dp"
android:layout_height="wrap_content"
android:checked="false"
android:fontFamily="#string/fontfamily"
android:text="#string/switchMemberTeams"
android:textColor="#color/colorPrimary"
android:layout_weight="1" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:layout_marginTop="16dp"
android:orientation="vertical">
<ListView
android:id="#+id/myTeamsListView"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_marginBottom="32dp"
android:layout_weight="1"
android:alwaysDrawnWithCache="true"
android:background="#drawable/spinner"
android:contentDescription="#string/myTeamsListViewcontent"
android:isScrollContainer="true"
android:scrollbars="vertical"
android:scrollingCache="true"
android:smoothScrollbar="true"></ListView>
</LinearLayout>
</LinearLayout>
</ScrollView>
<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" />
</androidx.drawerlayout.widget.DrawerLayout>
In the Activity onCreate I call populateMemberTeams(); I added a CountDownTimer to check if the progressBar is on the screen and it is...Before the 2 seconds, there is a empty space, but I can't see the ProgressBar
When the timer expires the UI adjusts when the ProgressBar changes to GONE.
private void populateMemberTeams() {
ListView myTeamsListView = findViewById(R.id.myTeamsListView);
ProgressBar progressBar = findViewById(R.id.myTeamsProgressBar);
progressBar.setVisibility(progressBar.VISIBLE);
mAuth = FirebaseAuth.getInstance();
String userId = mAuth.getCurrentUser().getUid();
callTeamManagement.populateMemberTeams(TAG, passedActivity, context, userId);
new CountDownTimer(2000, 1000) {
public void onFinish() {
progressBar.setVisibility(progressBar.GONE);
}
public void onTick(long millisUntilFinished) {
// millisUntilFinished The amount of time until finished.
}
}.start();
}
I have tried:
Changing the ProgressBar style in case it was a colour issue;
INVISIBLE instead of GONE;
Putting the ProgressBar inside its own LinearLayout
progressBar.setVisibility(progressBar.VISIBLE);
progressBar.setVisibility(View.VISIBLE);
progressBar.setVisibility(ProgressBar.VISIBLE);

You should use runOnUiThread.
Helper method for running part of a method on the UI thread.
runOnUiThread(new Runnable() {
#Override
public void run() {
progressBar.setVisibility(View.VISIBLE);
//progressBar.setVisibility(View.INVISIBLE);
//progressBar.setVisibility(View.GONE);
}
});

How to use ConstraintSet for animation in Android with Java?

I find that there is a quick way to create animation with ConstraintSet for ConstrainLayout Activity. Faster than use TransitionManager for RelativeLayout
ConstraintSet use two xml file for an Activity. One for the first position and next one for the destination.
I want to create something like this:
https://media.giphy.com/media/2UwXdWEoLWe9iQMFIY/giphy.gif
But there is no clearly instruction show how to use it in Java. Anyone had done this can show me the source code or link to some post like that.
Thanks for reading the post.

This is possible with ConstraintSet. They key is two have two layouts one layout has ui elements of the screen and the other has elements on the screen. Now you can use TransitionManager with interpolator and duration of your choice and animate the layout changes.
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
android:id="#+id/constraint"
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="#181818"
tools:context=".MainActivity">
<ImageView
android:id="#+id/backgroundImage"
android:layout_width="0dp"
android:layout_height="0dp"
android:src="#drawable/mugello"
android:scaleType="centerCrop"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="JUNE 3, 2018"
app:layout_constraintRight_toRightOf="#+id/title"
app:layout_constraintBottom_toBottomOf="#+id/title"
android:textSize="12sp"
android:background="#d3d3d3"
android:paddingStart="16dp"
android:paddingEnd="16dp"
android:paddingTop="3dp"
android:paddingBottom="3dp"/>
<TextView
android:id="#+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="48dp"
android:background="#F44336"
android:paddingBottom="8dp"
android:paddingEnd="24dp"
android:paddingStart="24dp"
android:paddingTop="8dp"
android:text="Mugello Circuit"
android:textColor="#FFFF"
android:textSize="45sp"
app:layout_constraintRight_toLeftOf="#+id/backgroundImage"
app:layout_constraintTop_toTopOf="parent" />
<View
android:id="#+id/fadeBackgroudView"
android:layout_width="wrap_content"
android:layout_height="90dp"
android:foreground="#drawable/gradient_variant"
app:layout_constraintBottom_toTopOf="#+id/description" />
<TextView
android:id="#+id/tap"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="12dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:text="Tap for info"
android:textSize="15sp"
android:textColor="#ffffff"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<TextView
android:id="#+id/description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="The Mugello is a historic region and valley in northern Tuscany, in Italy. It is located to the north of the city of Florence and consists of the northernmost portion of the Metropolitan City of Florence. It is connected to the separate Santerno river valley by the Futa Pass."
android:textSize="22sp"
android:textColor="#FFFF"
android:background="#181818"
android:gravity="center"
android:paddingStart="8dp"
android:paddingEnd="8dp"
android:paddingBottom="8dp"
app:layout_constraintTop_toBottomOf="#+id/backgroundImage"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"/>
</android.support.constraint.ConstraintLayout>
activity_main_detail.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
tools:context=".MainActivity">
<ImageView
android:id="#+id/backgroundImage"
android:layout_width="0dp"
android:layout_height="0dp"
android:scaleType="centerCrop"
android:src="#drawable/mugello"
app:layout_constraintBottom_toTopOf="#+id/description"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="48dp"
android:background="#F44336"
android:paddingBottom="8dp"
android:paddingEnd="24dp"
android:paddingStart="24dp"
android:paddingTop="8dp"
android:text="Mugello Circuit"
android:textColor="#FFFF"
android:textSize="45sp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="JUNE 3, 2018"
app:layout_constraintRight_toRightOf="#+id/title"
app:layout_constraintTop_toBottomOf="#+id/title"
android:textSize="12sp"
android:background="#d3d3d3"
android:paddingStart="16dp"
android:paddingEnd="16dp"
android:paddingTop="3dp"
android:paddingBottom="3dp"/>
<View
android:id="#+id/fadeBackgroudView"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:foreground="#drawable/gradient"
app:layout_constraintBottom_toTopOf="#+id/description" />
<TextView
android:id="#+id/tap"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:text="Tap for info"
android:textSize="15sp"
android:textColor="#ffffff"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<TextView
android:id="#+id/description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="The Mugello is a historic region and valley in northern Tuscany, in Italy. It is located to the north of the city of Florence and consists of the northernmost portion of the Metropolitan City of Florence. It is connected to the separate Santerno river valley by the Futa Pass."
android:textSize="22sp"
android:textColor="#FFFF"
android:gravity="center"
android:background="#181818"
android:paddingStart="8dp"
android:paddingEnd="8dp"
android:paddingBottom="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"/>
</android.support.constraint.ConstraintLayout>
MainActivity.java
public class MainActivity extends AppCompatActivity {
private boolean show = false;
private ImageView backgroundImage;
private ConstraintLayout constraint;
private ConstraintSet constraintSet = new ConstraintSet();
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
constraint = findViewById(R.id.constraint);
backgroundImage = findViewById(R.id.backgroundImage);
backgroundImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if(show)
hideComponents(); // if the animation is shown, we hide back the views
else
showComponents() ;// if the animation is NOT shown, we animate the views
}
});
}
private void showComponents(){
show = true;
constraintSet.clone(this, R.layout.activity_main_detail);
Transition transition = new ChangeBounds();
transition.setInterpolator(new AnticipateOvershootInterpolator(1.0f));
transition.setDuration(1000);
TransitionManager.beginDelayedTransition(constraint, transition);
constraintSet.applyTo(constraint);
}
private void hideComponents(){
show = false;
constraintSet.clone(this, R.layout.activity_main);
Transition transition = new ChangeBounds();
transition.setInterpolator(new AnticipateOvershootInterpolator(1.0f));
transition.setDuration(1000);
TransitionManager.beginDelayedTransition(constraint, transition);
constraintSet.applyTo(constraint);
}
}
Here's a slide share on ConstraintLayout https://speakerdeck.com/camaelon/advanced-animations-and-constraintlayout

How to find the ID of a dynamic UI element in android

I can make the dynamic UI without problems, but I don't know how to access the view with findviewbyid (R.id._____) I don't know what to put in the blank.
.java code
public class newList extends AppCompatActivity {
Button btnAddItem;
RelativeLayout layout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_new_list);
// allows the creation of dynamic rows
btnAddItem = (Button) findViewById(R.id.addItem);
btnAddItem.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
LayoutInflater inflater = getLayoutInflater();
ViewGroup parent = (ViewGroup) findViewById(R.id.linearVert);
inflater.inflate(R.layout.rows, parent);
}
});
}
}
xml that is associated with the java file
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="com.app.shoppingbuddy.shoppingbuddy.newList">
<ScrollView
android:layout_width="fill_parent"
android:layout_height="300dp"
android:id="#+id/scrollView" >
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:id="#+id/linearVert">
</LinearLayout>
</ScrollView>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Subtotal"
android:id="#+id/subtotal"
android:textColor="#ffc800"
android:layout_above="#+id/tax"
android:layout_alignParentStart="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Tax"
android:id="#+id/tax"
android:textColor="#ee00ff"
android:layout_above="#+id/total"
android:layout_alignParentStart="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Total"
android:id="#+id/total"
android:textColor="#ff0000"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:layout_marginBottom="20dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:id="#+id/subtotalAmount"
android:layout_alignBottom="#+id/subtotal"
android:layout_alignEnd="#+id/scrollView"
android:textColor="#ffc800" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:id="#+id/taxAmount"
android:layout_above="#+id/total"
android:layout_alignParentEnd="true"
android:textColor="#ee00ff" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:id="#+id/totalAmount"
android:layout_alignBottom="#+id/total"
android:layout_alignEnd="#+id/taxAmount"
android:textColor="#ff0000" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add Item"
android:id="#+id/addItem"
android:layout_above="#+id/subtotal"
android:layout_centerHorizontal="true"
android:layout_marginBottom="20dp" />
</RelativeLayout>
xml used to create rows
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:weightSum="1"
android:id="#+id/linearHor">
<ImageView
android:layout_width="40dp"
android:layout_height="40dp"
android:id="#+id/itemImage"
android:src="#drawable/box"
android:padding="5dp" />
<EditText
android:layout_width="109dp"
android:layout_height="wrap_content"
android:id="#+id/itemName"
android:hint="Name"
android:layout_weight="0.78" />
<EditText
android:layout_width="100dp"
android:layout_height="wrap_content"
android:inputType="number"
android:ems="10"
android:id="#+id/itemPrice"
android:hint="$ Price" />
</LinearLayout>
</LinearLayout>

There will be no unique R.id value at the activity level. For example, suppose the user taps the button 10 times, so you inflate the R.layout.rows layout 10 times. As a result, there will be 10 R.id.linearHor widgets, 10 R.id.itemPrice widgets, and so on.
Always call findViewById() on something that is guaranteed to give you a unique result. In this case — as with ListView, GridView, RecyclerView, etc. — you need to use other approaches to find the correct row View, then call findViewById() on that View to get at its child widgets.

Categories