I am taking reference from TextJustify-Android. I am implementing option 2 in above link. When I run my app on emulator text appears one word in one line, next word in next line and so on. I dont know whats wrong in my code. Please help me. Thanks.
Activity class code-
textView1 = (TextView) findViewById (R.id.textView1);
textView1.setMovementMethod(new ScrollingMovementMethod());
textView1.getViewTreeObserver().addOnPreDrawListener(new OnPreDrawListener()
{
boolean isJustified = false;
#Override
public boolean onPreDraw()
{
if(!isJustified)
{
TextJustifyUtils.run(textView1,0);
isJustified = true;
}
return true;
}
});
Xml code-
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="8"
android:gravity="center">
<TextView
android:id="#+id/textView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scrollbars="vertical"
android:text="#string/his"
android:textColor="#FFFFFF"/>
</LinearLayout>
And I am implementing TextJustifyUtils class in my app as suggested in above link.
I have made one change In that link given TextJustifyUtils.run(textView1); and In my code eclipse suggest me to change in TextJustifyUtils.run(textView1,0);. Is anything wrong with this?
Update:
In TextJustifyUtils I change public static void justify(TextView textView) into public static void run(TextView textView) as commented by the author there and TextJustifyUtils.run(textView1,0); into TextJustifyUtils.run(textView1); in Activity class. But the output is same as I type in my textView i.e text without justification.
If some one following the above link to justify text please choose option 1. Its work fine. And if you have any problem. Ask from author. I think he always happy to help you nice guy. As he helps me so much. And option 1 working with minor changes.
Related
I know this has been posted countless times and im sorry but I have tried to follow the solutions but can't seem to fix it.
Basically I'm trying to read records from Android SQLite Database, but I keep getting the error at setText.
public class Landing extends AppCompatActivity{
public Button buttonProducts;
public void countRecords(){
int recordCount = new TableControllerAppointments(this).count();
ScrollView textViewRecordCount = findViewById(R.id.textViewRecordCount);
textViewRecordCount.setText(recordCount + " records found.");
}
I'm following a tutorial and I added this code to my XML file,
<ScrollView
android:id="#+id/textViewRecordCount"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:padding="1dp"
android:text="#string/textViewRecordCount"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.182"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/buttonCreateAppointment"
app:layout_constraintVertical_bias="0.146" >
<LinearLayout
android:id="#+id/linearLayoutRecords"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
</LinearLayout>
</ScrollView>
Sorry if im not posting right this is my first time. I think its something to do with my ScrollView but not sure, any help would be much appreciated
Thanks
How to resolve method 'setText(java.lang.String)
FYI
setText() is method of textview not a method of Scrollview because ScrollView does not have any setText()
You can not use as Scrollview.setText("Nilesh");
textview.setText("Nilesh");
It must be like this I hope
public Button buttonProducts;
public void countRecords(){
int recordCount = new TableControllerAppointments(this).count();
TextView textViewRecordCount = findViewById(R.id.textViewRecordCount);
textViewRecordCount.setText(String.ValueOf(recordCount) + " records found.");
}
You can't set text to Scrollview, first you have to understand this, it's basic
You're trying to set text for "Scrollview", which is absolutely wrong. Scroll view is a view which is using for scroll the layout while the application runs. to full fill your requirement you have to declare a TextView. Then you can set the text for it.
I am using an ImageView as a NEXT button in my Android app which is responsible for loading the next page of results into the current activity. However, despite that I bind a click listener to it, I cannot seem to capture click events on this ImageView. Here is the XML:
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="50"
android:gravity="left"
android:orientation="horizontal">
<ImageView
android:id="#+id/listBackIcon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/back_icon"/>
<TextView
android:id="#+id/listBackLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Prev"
android:textSize="16dip"/>
</LinearLayout>
And here is the relevant Java code:
ImageView forwardIconView = (ImageView)findViewById(R.id.listBackIcon);
// not sure if necessary; doesn't fix it anyway
forwardIconView.setClickable(true);
forwardIconView.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
++pageNumber;
try {
params.put("page", pageNumber);
} catch (JSONException e) {
// do something
}
ConnectionTask task = new ConnectionTask();
task.execute(new String[0]);
}
});
I spent about an hour researching this on Stack Overflow. I found a few places which claimed that ImageView could directly be made clickable, but most things recommended workarounds using other types of widgets.
Does anything about my layout/code stand out as being a culprit for this behavior?
Update:
I also tried binding a click listener to the TextView at the same level as the ImageView and this too failed to capture clicks. So now I am suspecting that the views are being masked by something. Perhaps something is capturing the clicks instead of the views.
I would set it up like this:
private ImageView nextButton;
nextButton = (ImageView)view.findViewById(R.id.back_button);
Util.loadImage(getActivity(),R.drawable.some_image,nextButton); //Here i would load the image, but i see you do it in XML.
nextButton.setOnClickListener(nextButtonListener);
nextButton.setEnabled(true);
View.OnClickListener nextButtonListener = new View.OnClickListener() {
#Override
public void onClick(View view) {
Log.v(TAG, "ImageView has been clicked. do something.");
}
};
This works for me.
Why not use android:drawableLeft attribute for the textview instead of using imageView​ and textview both in a linearlayout .
<ImageView
android:id="#+id/listBackIcon"
...
android:clickable="true"
Or you can try overriding onTouchListener with ACTION_DOWN event filter, not onClickListener. Also check for parrents with android:clickable="false", they could block childs for click events.
What seemed to work for me was the accepted answer from this SO question, which suggests adding the following the every child element of the LinearLayout which I pasted in my question:
android:duplicateParentState="true"
I don't know exactly what was happening, but it appears the click events were not making it down to the TextView and ImageView. Strangely, the click events were reaching a Button, when I added one for debugging purposes. If someone has more insight into what actually happened, leave a comment and this answer can be updated.
I am developing an accessible android application where people would be using Explore by Touch and TalkBack accessibility services to use my application.
This is my Android XML code:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/LinearLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/forename"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dip"
android:layout_marginLeft="15dip"
android:textSize="20sp"
android:text="#string/forenameText"
android:contentDescription="#null"/>
<EditText
android:id="#+id/EditTextForename"
android:layout_width="285dp"
android:layout_height="65dp"
android:layout_marginTop="10dip"
android:layout_marginLeft="15dip"
android:hint="#string/forenameHint"
android:inputType="textPersonName"
android:lines="1"
android:singleLine="true"
android:textSize="20sp" >
</EditText>
</LinearLayout>
strings.xml
<string name="forenameText">Forename</string>
<string name="forenameHint">Enter your forename here</string>
TextView displays the title "Forename" and EditText allows me to enter some details in the form field. The problem I have is that when I
drag my finger across the screen by using Explore by Touch, TalkBack picks up the title of the TextView and announces it aloud as "Forename". I want the TextView to only display text and not provide any audible feedback.
I have set contentDescription to #null as you can see from the code above, but TalkBack still announces "Forename" when my finger is located over the
TextView.
I have also tried setting contentDescription in my Java class:
TextView forename=(TextView)findViewById(R.id.forename);
forename.setContentDescription("");
However, I still get the same problem. Is there any other way to set contentDescription to null/empty and prevent TalkBack from announcing it aloud?
Java code:
public class MainActivity extends Activity{
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
View forename = findViewById(R.id.forename);
forename.setAccessibilityDelegate(new AccessibilityDelegate() {
public boolean performAccessibilityAction (View host, int action, Bundle args){
return true;
}
});
}
}
Since API 16, Android introduced the following:
android:importantForAccessibility="no"
or
setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_NO)
Which allows developers to disable talkback all together for certain views.
http://developer.android.com/reference/android/view/View.html
For better backwards compatibility:
ViewCompat.setImportantForAccessibility(
decorativeTextView,
ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_NO);
I was trying to do the same today, and was able to set an 'empty' contentDescription on a TextView like so (using a non-breaking whitespace):
decorativeTextView.setContentDescription("\u00A0");
now TalkBack doesn't say anything for that TextView.
but I agree with Nick about leaving the label as readable in your case, because hint is only read for empty EditTexts.
Why do you not want the TextView to speak "forename"? It is being used as a label for the EditText. Once the user has entered some text the hint "enter your forename here" would no longer be spoken - as far as I know - so the TextView given the user some context for the EditText.
Similarly the announcement of "editbox" gives the user the role of the EditText control. While "form field" might be better it would not be the same behavior as in other apps and in the OS.
I had a similar problem. I eventually solved it by using the setAccessibilityDelegate method and overriding View.AccessibilityDelegate's performAccessibilityAction method.
try this:
View forename = findViewById(R.id.forename);
forename.setAccessibilityDelegate(new AccessibilityDelegate() {
public boolean performAccessibilityAction (View host, int action, Bundle args){
return true;
}
});
I had the same problem, and the only thing that worked for me was android:contentDescription=" " (white space).
I have read a number of tutorials on this topic but not able to make it working. Can anyone please help me with the following
a) A home screen widget which has a button, Imageview and a TextView
b) The textview updates periodically via a service
c) On Click of the button the Image Changes.
Can anyone please help with a sample code or point to codes which do this functionality
check out this book, it explains very clear how to make a widget "silent mode toggle"
http://iit.qau.edu.pk/books/Android.Application.Development.for.For.Dummies.pdf
a) In your xml, the following will be the code.
<Button
android:id="#+id/b"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/go" />
<ImageView
android:id="#+id/iv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/image" />
<TextView
android:id="#+id/tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#string/welcome" />
Of course, you need to arrange them according to your fancy.
b) Updating the text view is no big deal. Getting the text from the source is what is important. If it is from a web page, you could refer to usage of JSON. If it is from a database, then try SQLite. It all depends on your necessity.
Lets assume that you get your text. Your code for updation will be:
TextView t =(TextView) findViewById(R.id.tv);
t.setText(your_string);
To do it periodically you can use a parallel threading concept such as a runnable.
c) Set up an on Click Listener for this purpose.
Button b1;
b1 = (Button) findViewById(R.id.b);
b1.setOnClickListener(button_func);
This comes in your onCreate method.
View.OnClickListener button_func = new View.OnClickListener() {
#Override
public void onClick(View arg0) {
image = (ImageView) findViewById(R.id.iv);
iv.setImageResource(R.id.new_image);
}
};
Hope that you find this useful
I am developing an accessible android application where people would be using Explore by Touch and TalkBack accessibility services to use my application.
This is my Android XML code:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/LinearLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/forename"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dip"
android:layout_marginLeft="15dip"
android:textSize="20sp"
android:text="#string/forenameText"
android:contentDescription="#null"/>
<EditText
android:id="#+id/EditTextForename"
android:layout_width="285dp"
android:layout_height="65dp"
android:layout_marginTop="10dip"
android:layout_marginLeft="15dip"
android:hint="#string/forenameHint"
android:inputType="textPersonName"
android:lines="1"
android:singleLine="true"
android:textSize="20sp" >
</EditText>
</LinearLayout>
strings.xml
<string name="forenameText">Forename</string>
<string name="forenameHint">Enter your forename here</string>
TextView displays the title "Forename" and EditText allows me to enter some details in the form field. The problem I have is that when I
drag my finger across the screen by using Explore by Touch, TalkBack picks up the title of the TextView and announces it aloud as "Forename". I want the TextView to only display text and not provide any audible feedback.
I have set contentDescription to #null as you can see from the code above, but TalkBack still announces "Forename" when my finger is located over the
TextView.
I have also tried setting contentDescription in my Java class:
TextView forename=(TextView)findViewById(R.id.forename);
forename.setContentDescription("");
However, I still get the same problem. Is there any other way to set contentDescription to null/empty and prevent TalkBack from announcing it aloud?
Java code:
public class MainActivity extends Activity{
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
View forename = findViewById(R.id.forename);
forename.setAccessibilityDelegate(new AccessibilityDelegate() {
public boolean performAccessibilityAction (View host, int action, Bundle args){
return true;
}
});
}
}
Since API 16, Android introduced the following:
android:importantForAccessibility="no"
or
setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_NO)
Which allows developers to disable talkback all together for certain views.
http://developer.android.com/reference/android/view/View.html
For better backwards compatibility:
ViewCompat.setImportantForAccessibility(
decorativeTextView,
ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_NO);
I was trying to do the same today, and was able to set an 'empty' contentDescription on a TextView like so (using a non-breaking whitespace):
decorativeTextView.setContentDescription("\u00A0");
now TalkBack doesn't say anything for that TextView.
but I agree with Nick about leaving the label as readable in your case, because hint is only read for empty EditTexts.
Why do you not want the TextView to speak "forename"? It is being used as a label for the EditText. Once the user has entered some text the hint "enter your forename here" would no longer be spoken - as far as I know - so the TextView given the user some context for the EditText.
Similarly the announcement of "editbox" gives the user the role of the EditText control. While "form field" might be better it would not be the same behavior as in other apps and in the OS.
I had a similar problem. I eventually solved it by using the setAccessibilityDelegate method and overriding View.AccessibilityDelegate's performAccessibilityAction method.
try this:
View forename = findViewById(R.id.forename);
forename.setAccessibilityDelegate(new AccessibilityDelegate() {
public boolean performAccessibilityAction (View host, int action, Bundle args){
return true;
}
});
I had the same problem, and the only thing that worked for me was android:contentDescription=" " (white space).