I have two activities. The second activity has a textview that shows a string(about 600 words) from xml resources. When I want to start the second activity with a simple intent it shows the black screen for more than 30 seconds. Is this because of a long string? How i can solve this?
Intent intent = new Intent(Home.this, Text.class);
startActivity(intent);
Second avtivity:
public class Text extends AppCompatActivity {
TextView txt;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_text);
txt = findViewById(R.id.textView);
Typeface font = Typeface.createFromAsset(this.getAssets(), "B Roya.ttf");
txt.setTypeface(font);
}
}
and it's a layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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/colorPrimaryDark"
android:gravity="center_horizontal"
android:orientation="vertical"
tools:context=".Text">
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_weight="20"
android:background="#drawable/janin"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="16dp"
android:layout_marginTop="16dp"
android:layout_weight="50"
android:paddingBottom="8dp">
<com.uncopt.android.widget.text.justify.JustifiedTextView
android:id="#+id/textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/music"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:lineSpacingExtra="5dp"
android:paddingBottom="16dp"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:paddingTop="8dp"
android:textColor="#android:color/white"
android:textSize="20sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/imageView" />
</ScrollView>
</LinearLayout>
Seems it was because of using below library and i replaced it with TextView then it solved:
com.uncopt.android.widget.text.justify.JustifiedTextView
Related
First of all, I wanna say sorry about my English.
I am trying to build my first android application using android studio. I created the main page containing two taps one for login activity and the other one for the About section.
what I did exactly was create the Login activity for the fragments to hold the tabs and the basic design and one layout only without the java file for the about_tab_fragment section and finally the login_tab activity.
the problem is that I can not get the input data from the view and no action happened when I click on the login button.(and there is no error in the Run).
and this is my code:
Login activity (Layout)
<?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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Login">
<ImageView
android:layout_width="wrap_content"
android:layout_height="0dp"
android:src="#drawable/login_header"
app:layout_constraintHeight_percent=".27"
android:scaleType="centerCrop"
app:layout_constraintVertical_bias="0"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintHeight_percent=".78"
app:layout_constraintVertical_bias="1"
android:background="#drawable/desigen_for_login_page"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<androidx.viewpager.widget.ViewPager
android:id="#+id/view_pager"
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintVertical_bias="0"
app:layout_constraintHeight_percent=".7"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/tab_layout"/>
<com.google.android.material.tabs.TabLayout
android:id="#+id/tab_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/desigen_for_login_page"
app:layout_constraintVertical_bias="0"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/fab_google"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:backgroundTint="#color/white"
android:src="#drawable/google_img"
android:elevation="35dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/view_pager" />
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/fab_facebook"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:backgroundTint="#color/white"
android:src="#drawable/facebook_img"
app:layout_constraintHorizontal_bias="1"
android:layout_marginRight="10dp"
android:elevation="35dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/fab_google"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/view_pager" />
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/fab_insta"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:backgroundTint="#color/white"
android:src="#drawable/insta_img"
app:layout_constraintHorizontal_bias="0"
android:layout_marginLeft="10dp"
android:elevation="35dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/fab_google"
app:layout_constraintTop_toBottomOf="#+id/view_pager" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
Login activity (Java)
public class Login extends AppCompatActivity {
TabLayout tabLayout;
ViewPager viewPager;
FloatingActionButton facebook,google,instagram;
float v = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
tabLayout = findViewById(R.id.tab_layout);
viewPager = findViewById(R.id.view_pager);
facebook = findViewById(R.id.fab_facebook);
google = findViewById(R.id.fab_google);
instagram = findViewById(R.id.fab_insta);
tabLayout.addTab(tabLayout.newTab().setText("Login"));
tabLayout.addTab(tabLayout.newTab().setText("About"));
tabLayout.setTabGravity(tabLayout.GRAVITY_FILL);
final LoginAdapterClass adapter = new LoginAdapterClass(getSupportFragmentManager(),this,tabLayout.getTabCount());
viewPager.setAdapter(adapter);
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
//For animations
facebook.setTranslationY(300);
google.setTranslationY(300);
instagram.setTranslationY(300);
tabLayout.setTranslationY(300);
facebook.setAlpha(v);
google.setAlpha(v);
instagram.setAlpha(v);
tabLayout.setAlpha(v);
facebook.animate().translationY(0).alpha(1).setDuration(1000).setStartDelay(400).start();
google.animate().translationY(0).alpha(1).setDuration(1000).setStartDelay(600).start();
instagram.animate().translationY(0).alpha(1).setDuration(1000).setStartDelay(800).start();
tabLayout.animate().translationY(0).alpha(1).setDuration(1000).setStartDelay(100).start();
}
}
about_tab_fragment (layout)
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="About"
android:textSize="30dp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
Login_tab (Layout)
<?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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".LoginTab">
<EditText
android:id="#+id/email"
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_marginStart="24dp"
android:layout_marginTop="92dp"
android:layout_marginEnd="24dp"
android:background="#drawable/custom_inputs"
android:drawableStart="#drawable/custom_email_icon"
android:drawablePadding="12dp"
android:ems="10"
android:hint="Email Address"
android:inputType="textEmailAddress"
android:paddingStart="12dp"
android:paddingEnd="12dp"
android:textSize="14sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<EditText
android:id="#+id/password"
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_marginStart="24dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="24dp"
android:paddingStart="12dp"
android:paddingEnd="12dp"
android:background="#drawable/custom_inputs"
android:drawableStart="#drawable/custom_lock_icon"
android:drawablePadding="12dp"
android:ems="10"
android:hint="Password"
android:inputType="textPassword"
android:textSize="14sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.8"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/email" />
<Button
android:id="#+id/loginBtn"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Login"
android:textSize="16sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.758"
app:layout_constraintWidth_percent="0.8" />
<TextView
android:id="#+id/forgetPassword"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Forget Password"
app:layout_constraintHorizontal_bias="1"
app:layout_constraintVertical_bias="0"
android:layout_marginTop="5dp"
android:layout_marginRight="5dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="#+id/password"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/password" />
</androidx.constraintlayout.widget.ConstraintLayout>
My problem occurs here:
I can not take the text from the inputs email and password plus that I can not add event to the loginBtn. I tried to put Toast in the On Click Listener but nothing happened.
Login_tab (Java)
public class LoginTab extends AppCompatActivity {
EditText emailLogin,passwordLogin;
Button loginBtn;
TextView forgetPassword;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login_tab);
emailLogin = findViewById(R.id.email);
passwordLogin = findViewById(R.id.password);
loginBtn = findViewById(R.id.loginBtn);
forgetPassword = findViewById(R.id.forgetPassword);
loginBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(Login.this,"This is the login button",Toast.LENGTH_LONG).show();
if(emailLogin.getText().toString().isEmpty()){
emailLogin.setError("Email is required");
return;
}
if(passwordLogin.getText().toString().isEmpty()){
passwordLogin.setError("Password is required");
return;
}
}
});
}
}
Can any one help me to fix the problem.
I did a lot of searches but I could not find any answer.
I found the problem.
the problem because I have to put the action in the class loginTab that extends Fragment not AppCompatActivity.
public class LoginTabFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle saveInstanceState){
ViewGroup root = (ViewGroup) inflater.inflate(R.layout.activity_login_tab,container,false);
Button b = root.findViewById(R.id.loginBtn);
b.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(root.getContext(), "This is the Login button....",Toast.LENGTH_LONG).show();
}
});
return root;
}
}
I have a recyclerview that inflates data fetched from json.
The issue I am facing are design issues - sometimes the text is aligned correctly and the image is shown and sometimes the text is too long, causing what I think is for the image not to be shown.
here is my 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="wrap_content">
<android.support.constraint.ConstraintLayout
android:layout_width="395dp"
android:layout_height="170dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:background="#335634"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<de.hdodenhof.circleimageview.CircleImageView
android:id="#+id/heroImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:src="#mipmap/ic_launcher"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/heroTitle"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:layout_marginEnd="16dp"
android:autoSizeMaxTextSize="25dp"
android:autoSizeMinTextSize="15dp"
android:text="Hero Title"
android:textSize="25dp"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/heroDescription"
android:layout_width="200dp"
android:breakStrategy="simple"
android:layout_height="wrap_content"
android:layout_marginStart="36dp"
android:layout_marginTop="24dp"
android:layout_marginEnd="16dp"
android:autoSizeMaxTextSize="25dp"
android:autoSizeMinTextSize="15dp"
android:text="TextView"
android:textAlignment="center"
android:textSize="18dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/heroImage"
app:layout_constraintTop_toBottomOf="#+id/heroTitle" />
</android.support.constraint.ConstraintLayout>
</android.support.constraint.ConstraintLayout>
and here is my adapter:
public class HeroesAdapter extends RecyclerView.Adapter<HeroesAdapter.HeroesViewHolder> {
private List<Hero> heroList;
public HeroesAdapter(List<Hero> heroList) {
this.heroList = heroList;
}
#NonNull
#Override
public HeroesViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View rowView = LayoutInflater.from(parent.getContext()).inflate(R.layout.hero_cell, parent, false);
return new HeroesViewHolder(rowView);
}
#Override
public void onBindViewHolder(#NonNull HeroesViewHolder holder, int position) {
Hero currentHero = heroList.get(position);
String str = String.join(",", currentHero.abilities);
holder.heroTitle.setText(currentHero.title);
holder.heroAbilties.setText(str);
Picasso.get().load(currentHero.image).resize(500,500).into(holder.heroesImage);
}
#Override
public int getItemCount() {
return heroList.size();
}
public static class HeroesViewHolder extends RecyclerView.ViewHolder {
ImageView heroesImage;
TextView heroTitle;
TextView heroAbilties;
public HeroesViewHolder(#NonNull View itemView) {
super(itemView);
heroesImage = itemView.findViewById(R.id.heroImage);
heroTitle = itemView.findViewById(R.id.heroTitle);
heroAbilties = itemView.findViewById(R.id.heroDescription);
}
}
}
This is the result I am getting and this is the wanted result.
the issues I am facing are:
making each row have a clean design and act the same for all.
images are sometimes shown, sometimes not.
bottom view is "half in screen" and half out of screen.
By using LinearLayout you can design your hero_cell that will give you the desirable output. as I do it for now.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="horizontal"
android:padding="10dp"
android:background="#335634"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<de.hdodenhof.circleimageview.CircleImageView
android:id="#+id/heroImage"
android:layout_width="80dp"
android:layout_height="wrap_content"
android:src="#drawable/logo"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<LinearLayout
android:background="#335634"
android:layout_marginLeft="20dp"
android:orientation="vertical"
android:layout_gravity="center_vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/heroTitle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:autoSizeMaxTextSize="25dp"
android:autoSizeMinTextSize="15dp"
android:text="Hero Title"
android:textSize="25dp"
android:textStyle="bold"
/>
<TextView
android:id="#+id/heroDescription"
android:layout_width="match_parent"
android:breakStrategy="simple"
android:layout_height="wrap_content"
android:autoSizeMaxTextSize="25dp"
android:autoSizeMinTextSize="15dp"
android:text="TextView"
android:textSize="18dp" />
</LinearLayout>
According to your expectation, you should use card-view and I've updated the layout. Please check
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_margin="10dp"
app:cardCornerRadius="10dp"
android:elevation="10dp"
android:layout_height="wrap_content">
<android.support.constraint.ConstraintLayout
android:layout_width="395dp"
android:layout_height="170dp"
android:background="#fff"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<de.hdodenhof.circleimageview.CircleImageView
android:id="#+id/heroImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:src="#mipmap/ic_launcher"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/heroTitle"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="20dp"
android:layout_marginEnd="16dp"
android:autoSizeMaxTextSize="25dp"
android:autoSizeMinTextSize="15dp"
android:text="Hero Title"
android:textColor="#000"
android:textSize="25dp"
android:textStyle="bold"
app:layout_constraintBottom_toTopOf="#+id/heroDescription"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/heroImage"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/heroDescription"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="16dp"
android:autoSizeMaxTextSize="25dp"
android:autoSizeMinTextSize="15dp"
android:breakStrategy="simple"
android:text="TextView"
android:textColor="#444"
android:textSize="18dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/heroImage"
app:layout_constraintTop_toBottomOf="#+id/heroTitle" />
</android.support.constraint.ConstraintLayout>
</android.support.v7.widget.CardView>
I am attempting to add card views to a scroll view dynamically. so I am adding these cardviews to a linear layout which is situated inside a scrollview in my xml. However when I press the fab button I don't see anything. I don't know why. Is it something to do with layoutparams?
This is my create.java
public class create extends AppCompatActivity {
Button button;
Context context;
CardView cardview;
LayoutParams layoutparams;
TextView textview;
LinearLayout linearLayout;
ScrollView scrollView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.create);
button = (Button)findViewById(R.id.button);
context = getApplicationContext();
linearLayout = (LinearLayout) findViewById(R.id.linearlayout1);
scrollView = (ScrollView)findViewById(R.id.scrollView1);
//TODO FAB BUTTON
FloatingActionButton floatingActionButton =
(FloatingActionButton) findViewById(R.id.fab);
floatingActionButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
createCardViewProgrammatically();
}
});
}
public void createCardViewProgrammatically(){
CardView card = new CardView(context);
// Set the CardView layoutParams
LayoutParams params = new LayoutParams(
LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT
);
card.setLayoutParams(params);
// Set CardView corner radius
card.setRadius(9);
// Set cardView content padding
card.setContentPadding(15, 15, 15, 15);
// Set a background color for CardView
card.setCardBackgroundColor(Color.parseColor("#FFC6D6C3"));
// Set the CardView maximum elevation
card.setMaxCardElevation(15);
// Set CardView elevation
card.setCardElevation(9);
// Initialize a new TextView to put in CardView
TextView tv = new TextView(context);
tv.setLayoutParams(params);
tv.setText("CardView\nProgrammatically");
tv.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 30);
tv.setTextColor(Color.RED);
// Put the TextView in CardView
card.addView(tv);
// Finally, add the CardView in root layout
linearLayout.addView(card);
}
}
and this is my xml file
<?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"
android:background="#color/colorBackground"
android:minHeight="170dp"
tools:context=".create"
tools:layout_editor_absoluteY="81dp"
>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="438dp"
android:fillViewport="true"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
tools:layout_editor_absoluteY="0dp">
<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="com.android_examples.cardviewprogrammatically_android_examplescom.MainActivity"
android:id="#+id/linearlayout1">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Click here to Create CardView programmatically on Button click"
android:id="#+id/button"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
</LinearLayout>
</ScrollView>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="60dp"
android:layout_height="70dp"
android:layout_gravity="bottom|end"
android:layout_marginBottom="16dp"
android:layout_marginEnd="16dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="16dp"
android:layout_marginStart="8dp"
android:src="#android:drawable/ic_input_add"
app:backgroundTint="#color/colorCreate"
app:elevation="6dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:pressedTranslationZ="12dp"
android:tint="#color/colorBackground"/>
<View
android:id="#+id/subheading"
android:layout_width="match_parent"
android:layout_height="83dp"
android:layout_marginBottom="8dp"
android:layout_marginEnd="1dp"
android:layout_marginLeft="1dp"
android:layout_marginRight="1dp"
android:layout_marginStart="1dp"
android:layout_marginTop="2dp"
android:background="#color/colorBackground"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0"
/>
<View
android:id="#+id/view"
android:layout_width="320dp"
android:layout_height="1dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="76dp"
android:background="#color/colorText"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<View
android:id="#+id/view2"
android:layout_width="320dp"
android:layout_height="1dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="28dp"
android:background="#color/colorText"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="12dp"
android:text="#string/done_label"
android:textColor="#color/colorText"
android:textSize="20sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/textView4"
app:layout_constraintTop_toBottomOf="#+id/view2" />
<TextView
android:id="#+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="128dp"
android:layout_marginRight="128dp"
android:layout_marginTop="8dp"
android:text="#string/aisle_label"
android:textColor="#color/colorText"
android:textSize="20sp"
app:layout_constraintBottom_toTopOf="#+id/view"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/view2"
app:layout_constraintVertical_bias="1.0" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginEnd="32dp"
android:layout_marginRight="32dp"
android:layout_marginTop="5dp"
android:text="#string/qty_label"
android:textColor="#color/colorText"
android:textSize="20sp"
app:layout_constraintBottom_toTopOf="#+id/view"
app:layout_constraintEnd_toStartOf="#+id/textView4"
app:layout_constraintTop_toBottomOf="#+id/view2"
app:layout_constraintVertical_bias="0.7" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="#string/item_label"
android:textColor="#color/colorText"
android:textSize="20sp"
app:layout_constraintBottom_toTopOf="#+id/view"
app:layout_constraintEnd_toStartOf="#+id/textView3"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/view2"
app:layout_constraintVertical_bias="1.0" />
</android.support.constraint.ConstraintLayout>
You need to specify the Orientation of your LinearLayout as VERTICAL
<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"
android:orientation="vertical"
tools:context="com.android_examples.cardviewprogrammatically_android_examplescom.MainActivity"
android:id="#+id/linearlayout1">
I have a ScrollView with a TextView as it's child view, which changes it's span every second in Runnable called by MainActivity:
MainActivity:
// MainActivity's private members
private ConstraintLayout m_mainLayout;
private UnderlineSpan m_underlineSpan;
private SpannableStringBuilder m_spannableStringBuilder;
private Spannable m_spannableText;
private TextView m_textView;
private ScrollView m_scrollView;
private Runnable onUpdateTime = new Runnable()
{
#Override
public void run()
{
changeTextViewSpan();
m_mainLayout.postDelayed(onUpdateTime, 1000);
}
};
#Override
protected void onCreate(Bundle savedInstanceState)
{
m_textView = new TextView(this);
m_textView.setLayoutParams(
new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT));
m_scrollView.addView(m_textView );
m_spannableStringBuilder = new SpannableStringBuilder(Html.fromHtml(html)); // load long text from HTML file
m_textView.setText(m_spannableStringBuilder, TextView.BufferType.SPANNABLE);
m_spannableText = (Spannable) m_textView.getText();
}
private void changeTextViewSpan()
{
m_spannableText.setSpan(
m_underlineSpan,
startIndex,
endIndex,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
MainActivity layout:
<?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:id="#+id/mainLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<ScrollView
android:id="#+id/largeTextScrollView"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="8dp">
</ScrollView>
<SeekBar
android:id="#+id/playbackSeekBar"
android:layout_width="251dp"
android:layout_height="30dp"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
app:layout_constraintBottom_toTopOf="#+id/playbackControlButton"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/durationTextView" />
<ImageButton
android:id="#+id/playbackControlButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:layout_marginLeft="8dp"
android:layout_marginStart="8dp"
android:onClick="onClick"
android:src="#drawable/ic_play_arrow_black_42dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<ImageButton
android:id="#+id/volumeImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:src="#drawable/ic_volume_up_black_24dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/volumeBar"
app:layout_constraintTop_toBottomOf="#+id/playbackSeekBar" />
<SeekBar
android:id="#+id/volumeBar"
android:layout_width="94dp"
android:layout_height="0dp"
android:layout_marginBottom="16dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="16dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/playbackSeekBar" />
<TextView
android:id="#+id/currentPositionTextView"
android:layout_width="40dp"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginLeft="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="0:00"
app:layout_constraintBottom_toTopOf="#+id/playbackControlButton"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/transcriptScrollView" />
<TextView
android:id="#+id/slashTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:text="/"
app:layout_constraintBottom_toTopOf="#+id/playbackControlButton"
app:layout_constraintStart_toEndOf="#+id/currentPositionTextView"
app:layout_constraintTop_toBottomOf="#+id/transcriptScrollView" />
<TextView
android:id="#+id/durationTextView"
android:layout_width="40dp"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:text="0:00"
app:layout_constraintBottom_toTopOf="#+id/playbackControlButton"
app:layout_constraintStart_toEndOf="#+id/slashTextView"
app:layout_constraintTop_toBottomOf="#+id/transcriptScrollView" />
<ImageButton
android:id="#+id/trackImageButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:onClick="onClick"
android:src="#drawable/ic_visibility_off_black_24dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/volumeImageView"
app:layout_constraintTop_toBottomOf="#+id/playbackSeekBar" />
</android.support.constraint.ConstraintLayout>
Now, whenever I change TextView's span, the ScrollView stops scrolling, and after span is changed, ScrollView works correctly.
What I'm trying to achieve is to change the UnderlineSpan position of the long text which is loaded from the HTML file. The size of the text don't change, but it's long enough to put it into ScrollView.
Does anyone know what to do to make it scroll smoothly?
Thanks!
I am not really sure what you want to achieve.
But if you want a smooth scroll, you must set the height of your textview to a fixed size.
Then you can change textview content without changing its size every seconds.
This way the scroll must be smoothed.
I want to continuously show different text on text view which animates from left to right, waits on the center of the screen for 3 sec and animates outside of the screen and replaced by a new text which animates from left to right
I have included a textview inside a viewflipper.
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/tv__inc_pre_sing__screen_title"
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#fff"
android:gravity="center"
android:text="PRACTICE"
android:textAllCaps="true"
android:textColor="#color/colorAccent"
android:textSize="16dp"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<android.support.constraint.ConstraintLayout
android:id="#+id/rl__inc_pre_sing__tm_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:animateLayoutChanges="true"
android:background="#efff"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/tv__inc_pre_sing__screen_title">
<ImageView
android:id="#+id/tv__inc_pre_sing__quotation_mark"
android:layout_width="12dp"
android:layout_height="12dp"
android:layout_marginTop="12dp"
android:src="#drawable/ic_launcher_background"
app:layout_constraintTop_toTopOf="parent" />
<ViewFlipper
android:id="#+id/view_flipper"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:animateLayoutChanges="true"
android:layout_marginStart="24dp"
android:layout_marginTop="16dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#id/tv__inc_pre_sing__quotation_mark"
app:layout_constraintTop_toTopOf="parent">
<TextView
android:id="#+id/tv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Hiiiiii" />
</ViewFlipper>
<ImageView
android:layout_width="12dp"
android:layout_height="12dp"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:src="#drawable/ic_launcher_background"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/view_flipper" />
</android.support.constraint.ConstraintLayout>
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:text="Click Me"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<View
android:layout_width="0dp"
android:layout_height="16dp"
android:background="#drawable/ic_launcher_background"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/rl__inc_pre_sing__tm_container" />
</android.support.constraint.ConstraintLayout>
MainActivity Code
public class Main6Activity extends AppCompatActivity {
private ViewFlipper mViewFlipper;
private int count = 0;
private TextView textView;
private ConstraintLayout rootContainer;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main6);
mViewFlipper = findViewById(R.id.view_flipper);
textView = findViewById(R.id.tv);
rootContainer = findViewById(R.id.rl__inc_pre_sing__tm_container);
mViewFlipper.setAutoStart(true);
mViewFlipper.startFlipping();
mViewFlipper.setInAnimation(AnimationUtils.loadAnimation(rootContainer.getContext(), android.R.anim.slide_in_left));
mViewFlipper.setOutAnimation(AnimationUtils.loadAnimation(rootContainer.getContext(), android.R.anim.slide_out_right));
Resources resources = getApplicationContext().getResources();
final String[] textString = resources.getStringArray(R.array.teacher_messages);
new Thread() {
#Override
public void run() {
super.run();
try {
while (!isInterrupted()) {
Thread.sleep(3000);
runOnUiThread(() -> updateText(textString));
}
} catch (Exception e) {
e.printStackTrace();
}
}
}.start();
}
public void updateText(String[] strings) {
if (count >= strings.length) {
count = 0;
}
textView.setText(strings[count]);
count++;
}
}
I guess the outanimation does not work as the textview length changes and I want to animate the constraint layout according to the textview height.
Not sure if this is the right reason.
The outAnimation of the view flipper does not work.
That's not how ViewFlipper works . the View flipper will only animate the view added to it .
Here's an example :
<ViewFlipper
android:id="#+id/viewFlipper"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/loading"
android:autoStart="true"
android:flipInterval="5000"
android:inAnimation="#android:anim/slide_in_left"
android:outAnimation="#android:anim/slide_out_right">
<TextView
fontPath="fonts/benton_light.ttf"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/text1"
android:textColor="#color/white"
android:textSize="18sp" />
<TextView
fontPath="fonts/benton_light.ttf"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/text3"
android:textColor="#color/white"
android:textSize="18sp" />
<TextView
fontPath="fonts/benton_light.ttf"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/tex2"
android:textColor="#color/white"
android:textSize="18sp" />
</ViewFlipper>
Source
If that does not suit your needs . you can take a look at this solution. (Animating text changes in a TextView)