At the moment it works with single line and when I input a text with more than one line, the application crashes.
MainActivity:
HTextView tvQuestion_hanks = (HTextView) findViewById(R.id.tvQs_hanks);
tvQuestion_hanks.setAnimateType(HTextViewType.SCALE);
tvQuestion_hanks.animateText("Hello world");
Layout:
<RelativeLayout
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"
xmlns:htext="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.hanks.htextview.HTextView
android:id="@+id/tvQs_hanks"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginTop="16dp"
android:textColor="#000000"
android:textSize="17dp"
android:text="Question"
htext:animateType="scale"
android:gravity="start">
</com.hanks.htextview.HTextView>
</RelativeLayout>
I've tried different layout codes like;
android:lines="5"
android:maxLines="5"
android:nestedScrollingEnabled="true"
but it didn't work . This is my logcat just after i press the button and a multiline text is sent to HTextView (as I said the app crashes) :
02-13 20:01:18.074 4456-4456/com.example.moham.myapplication D/AndroidRuntime:
Shutting down VM
02-13 20:01:18.074 4456-4456/com.example.moham.myapplication W/dalvikvm:
threadid=1: thread exiting with uncaught exception (group=0x94caeb20)
02-13 20:01:18.074 4456-4456/com.example.moham.myapplication E/AndroidRuntime:
FATAL EXCEPTION: main
Process: com.example.moham.myapplication, PID:
4456
java.lang.ArrayIndexOutOfBoundsException:
length=100; index=100
at
com.hanks.htextview.animatetext.HText.prepareAnimate(HText.java:88)
at
com.hanks.htextview.animatetext.HText.animateText(HText.java:74)
at
com.hanks.htextview.HTextView.animateText(HTextView.java:107)
at
com.example.moham.myapplication.MainActivity$1.onClick(MainActivity.java:34)
at
android.view.View.performClick(View.java:4438)
at
android.view.View$PerformClick.run(View.java:18422)
at
android.os.Handler.handleCallback(Handler.java:733)
at
android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at
android.app.ActivityThread.main(ActivityThread.java:5019)
at java.lang.reflect.Method.invokeNative(Native
Method)
at
java.lang.reflect.Method.invoke(Method.java:515)
at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native
Method)
HTextView GitHub page: https://github.com/hanks-zyh/HTextView
HTextView GitHub page2: https://github.com/yikwing/HTextView
I've solved this problem , not just by means of it's right way , but it finally worked . As "Re'em" noticed in the comments , this is a bug from the HTextView main library so i asked it's developers to solve it , but i was in a big hurry , so i solved it this way :
As the HTextView is only able to handle a one-line text entry , I wrote a Function in order to measure the approximate possible amount of chars along the screen-width by :
First ) Finding text width in pixels.
Second ) Dividing it into text length.
PixelPerChar = TXT_width / TXT.length();
And then , in order to approximate possible amount of chars along the screen-width , i divided screen-width into PixelPerChar , so the result is an approximate number of chars that fit correctly along the screen and it won't exceed a one-line text .
PossibleChars = lcdWidth() / PixelPerChar;
The next step is to adding HtextViews to a LinearLayout one after another , Substring the text into one-line serries at the same time , and send it to each HTextView created , until the text becomes shorter than the screen-width .
Take a look at the full function code : (Qs = Question = text :)
private void QsPrint(String Qs){
LinearLayout LinearLay1 = (LinearLayout) findViewById(R.id.LinearLay1);
LinearLay1.removeAllViews();
int Qswidth = QsWidth(tvQuestion_hanks , Qs);
DisplayMetrics metrics = MainMenu.this.getResources().getDisplayMetrics();
int lcdwidth = metrics.widthPixels;
int lcdheight = metrics.heightPixels;
int PIXperCHAR = Qswidth / Qs.length();
SubStart = 0;
SubEnd = lcdwidth / PIXperCHAR;
sub1 = "";
while (true)
{
HTextView tvQs_Hanks_multiline = new HTextView(MainMenu.this);
RelativeLayout.LayoutParams params1 = new RelativeLayout
.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
tvQs_Hanks_multiline.setLayoutParams(params1);
tvQs_Hanks_multiline.setTextSize(TypedValue.COMPLEX_UNIT_DIP, PixelToDp((int)(tvQuestion_hanks.getTextSize())));
tvQs_Hanks_multiline.setAnimateType(HTextViewType.SCALE);
LinearLay1.addView(tvQs_Hanks_multiline);
sub1 = "";
if(Qswidth >= lcdwidth) {
try {
sub1 = Qs.substring(SubStart, SubEnd);
} catch (Exception e) {
QsPrintSubString(Qs);
}
while (QsWidth(tvQs_Hanks_multiline , sub1) >= lcdwidth){
SubEnd --;
sub1 = Qs.substring(SubStart, SubEnd);
}
SubEnd -=4; // For spacing before/after the TXT
sub1 = Qs.substring(SubStart, SubEnd);
tvQs_Hanks_multiline.animateText(" "+sub1+"");
}
else if(Qswidth < lcdwidth){
sub1 = Qs;
tvQs_Hanks_multiline.animateText(" " + sub1 + "");
break;
}
if(Qswidth >= lcdwidth) {
Qs = Qs.substring(SubEnd, Qs.length());
Qswidth = QsWidth(tvQs_Hanks_multiline , Qs);
PIXperCHAR = Qswidth / Qs.length();
SubStart = 0;
if(Qswidth >= lcdwidth) {
SubEnd = lcdwidth / PIXperCHAR;
}
}
}
}
I used this function to calculate the text width in pixels :
private int QsWidth(TextView tv , String Question){
String Qs = Question;
Rect bound = new Rect();
Paint textPaint = tv.getPaint();
textPaint.getTextBounds(Qs, 0, Qs.length(), bound);
int QsWidth = bound.width();
return QsWidth;
}
Pixel to dp convertor function :
public static int PixelToDp(int px)
{
return (int) (px / Resources.getSystem().getDisplayMetrics().density);
}
And finally , i used this function because some times the text length is a special amount of chars that the "QsPrint" function can not Substring it correctly and crashes :( , so i used this function .
It works so simple , it continuously reduces the SubEnd and tests the Substring again.
the function will keep running until it doesn't crash any more :)
private void QsPrintSubString(String Qs){
SubEnd--;
try {
sub1 = Qs.substring(SubStart, SubEnd);
}catch (Exception e){
QsPrintSubString(Qs);
}
}
XML layout:
( tvQs_hanks you see below is almost useless , it's just needed in "QsWidth()" function in order to calculate the text width before we create any HTextView in our LinearLayout )
<RelativeLayout
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"
xmlns:htext="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="@+id/LinearLay1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:orientation="vertical">
</LinearLayout>
<com.hanks.htextview.HTextView
android:id="@+id/tvQs_hanks"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Question"
android:textColor="#000000"
android:textSize="17dp"
android:visibility="gone"
htext:animateType="scale">
</com.hanks.htextview.HTextView>
</RelativeLayout>