Develop Reference

Android text around image bug

By following this question, I was able to have text around an image. However, I have the following problem.
As you can see, the space for the image on top is displayed in every paragraph at the right. In the question someone had this problem and suggested to change 'ss.length()' for 'lines'. This seemed to work except if the first paragraph was too short, the next paragraph would overlap the image.
I modified the FlowTextHelper class slightly to use text from Html. This is the code I'm using:
public class FlowTextHelper {
private static boolean mNewClassAvailable;
/* class initialization fails when this throws an exception */
static {
try {
Class.forName("android.text.style.LeadingMarginSpan$LeadingMarginSpan2");
mNewClassAvailable = true;
} catch (Exception ex) {
mNewClassAvailable = false;
}
}
public static void tryFlowText(String text, View thumbnailView, TextView messageView, Display display, int addPadding){
// There is nothing I can do for older versions, so just return
if(!mNewClassAvailable) return;
// Get height and width of the image and height of the text line
thumbnailView.measure(display.getWidth(), display.getHeight());
int height = thumbnailView.getMeasuredHeight();
int width = thumbnailView.getMeasuredWidth() + addPadding;
messageView.measure(width, height); //to allow getTotalPaddingTop
int padding = messageView.getTotalPaddingTop();
float textLineHeight = messageView.getPaint().getTextSize();
// Set the span according to the number of lines and width of the image
int lines = (int)Math.round((height - padding) / textLineHeight);
//SpannableString ss = new SpannableString(text);
//For an html text you can use this line:
if(!text.equals("")) {
SpannableStringBuilder ss = (SpannableStringBuilder) Html.fromHtml(text);
ss.setSpan(new MyLeadingMarginSpan2(lines, width), 0, ss.length(), 0);
messageView.setText(ss);
messageView.setMovementMethod(LinkMovementMethod.getInstance()); // links
// Align the text with the image by removing the rule that the text is to the right of the image
RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) messageView.getLayoutParams();
int[] rules = params.getRules();
rules[RelativeLayout.RIGHT_OF] = 0;
}
}
}
public class MyLeadingMarginSpan2 implements LeadingMarginSpan.LeadingMarginSpan2 {
private int margin;
private int lines;
public MyLeadingMarginSpan2(int lines, int margin) {
this.margin = margin;
this.lines = lines;
}
#Override
public int getLeadingMargin(boolean first) {
return first ? margin : 0;
}
#Override
public int getLeadingMarginLineCount() {
return lines;
}
#Override
public void drawLeadingMargin(Canvas c, Paint p, int x, int dir,
int top, int baseline, int bottom, CharSequence text,
int start, int end, boolean first, Layout layout) {}
}
What is causing the space being repeated every paragraph and how can I get rid of it? Any help is appreciated.

I've spend hours to solve this issue, but solved it with thanks to the answer found here:
text wrapping around image in android
Basically as follows:
First add a margin to your textview and set the text
final RelativeLayout.LayoutParams params = RelativeLayout.LayoutParams)messageView.getLayoutParams();
params.setMargins(marginWidth, 0, 0, 0);
messageView.setText(Html.fromHtml(text));
Then add an OnGlobalLayoutListener and in the onGlobalLayout() call you calculate how many lines actually need the margin. You split the lines in 2 separate spannables and add the Margin only to the first one:
messageView.getViewTreeObserver().addOnGlobalLayoutListener( new OnGlobalLayoutListener() {
#SuppressLint("NewApi")
#SuppressWarnings("deprecation")
#Override
public void onGlobalLayout() {
int linesCount = messageView.getLayout().getLineCount();
// restore the margin
params.setMargins(0, 0, 0, 0);
SpannableString spanS = new SpannableString ( Html.fromHtml(text) );
if (linesCount <= lines) {
spanS.setSpan(new MyLeadingMarginSpan2(lines, width), 0, spanS.length(), 0);
messageView.setText(spanS);
} else {
// find the breakpoint where to break the String.
int breakpoint = messageView.getLayout().getLineEnd(lines-1);
Spannable s1 = new SpannableStringBuilder(spanS, 0, breakpoint);
s1.setSpan(new MyLeadingMarginSpan2(lines, width), 0, s1.length(), 0);
Spannable s2 = new SpannableStringBuilder(System.getProperty("line.separator"));
Spannable s3 = new SpannableStringBuilder(spanS, breakpoint, spanS.length());
// It is needed to set a zero-margin span on for the text under the image to prevent the space on the right!
s3.setSpan(new MyLeadingMarginSpan2(0, 0), 0, s3.length(), 0);
messageView.setText(TextUtils.concat(s1, s2, s3));
}
// remove the GlobalLayoutListener
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
messageView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
} else {
messageView.getViewTreeObserver().removeGlobalOnLayoutListener(this);
}
}
});

If you need to wrap text around an image, use this library FlowTextView.
The library performs well, and it can be used with a couple lines. However, it does not support screen pixel size for fonts. I found a workaround with this answer, so that you can convert pixel size to sp.
I hope this helps anyone and you don't waste as much time as me using the question from my original post.

(ANDROID) ImageView won't position correctly

I have an Android related issue:
I am trying to centre a logo on the screen of my device, but it won't position correctly.
I am using the following function:
public void ImageCentered(int ID){
ImageView iv = (ImageView) findViewById(ID);
int x = 0;
int y = 0;
RelativeLayout.LayoutParams position = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
x = (screenWidth/2)-(iv.getWidth()/2);
y = (screenHeight/2)-(iv.getHeight()/2);
position.setMargins(x, y, 0, 0);
iv.setLayoutParams(position);
}
This could should work,but it won't. The image is set off slightly to the right and bottom like in this image:
https://www.dropbox.com/s/tf7r1u1xqcmb9t9/2014-08-16%2018.36.04.png
Now, the strange thing is, when I use the following code:
public void ImageCentered(int ID){
ImageView iv = (ImageView) findViewById(ID);
int x = 0;
int y = 0;
RelativeLayout.LayoutParams position = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
x = (screenWidth/2)-(iv.getWidth()/2);
y = (screenHeight/2)-(iv.getHeight()/2);
position.setMargins(x, y, 0, 0);
Message(IntToStr(x)+", "+IntToStr(y));
iv.setLayoutParams(position);
}
this is the result:
https://www.dropbox.com/s/mjw80zlzkav6dzs/2014-08-16%2018.41.16.png
Side note: The text in the Message() function does not matter, nor does its position within the ImageCentered() function.
I am not calling the function in my OnCreate(), as the width and height of the image would always return 0, so I looked something up and found this:
#Override
public void onWindowFocusChanged(boolean hasFocus){
ImageCentered(R.id.image);
}
This piece of code is in my MainActivity.java file, whereas the ImageCentered() function is in my UtilLib.java file.
So, I was wondering: What's going on here? Why does the code work when I pop in a Message() but not when I leave it out?
Sure, I can try hardcoding the data, but what about smaller/bigger screens?
I hope an Android guru can help me out here, as I've been struggling with this for quite some time now.
EDIT
Just noticed something interesting when pressing "OK" on my Message:
https://www.dropbox.com/s/a7lu6588hy1opw7/2014-08-16%2018.51.55.png
My guess is that my problem lies there, but after clicking the "OK" button once more, the data is "492, 207" again. scratches head

Assuming rom your code that the ImageView is inside a RelativeLayout, You could also do:
// get imageview layout params or create new ones
RelativeLayout.LayoutParams params = imageView.getLayoutParams();
params.addRule(RelativeLayout.CENTER_HORIZONTAL);
this way the image will be automatically centered without all those manual calculations!.
You can also specify it in the XML with
<ImageView .....
android:layout_centerHorizontal="true"/>

I've ultimately decided to just hardcode the x and y coordinates, and later on use some sort of scaling-conversion to position them properly, unless someone can provide me with a better method of fixing this.
UPDATE
So, after googling after a while (again), I have finally found the answer and created two functions:
public int GetImageHeight(int ID){
ImageView iv = (ImageView)findViewById(ID);
iv.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
iv.layout(0, 0, iv.getMeasuredWidth(), iv.getMeasuredHeight());
return iv.getMeasuredHeight();
}
public int GetImageWidth(int ID){
ImageView iv = (ImageView)findViewById(ID);
iv.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
iv.layout(0, 0, iv.getMeasuredWidth(), iv.getMeasuredHeight());
return iv.getMeasuredWidth();
}
All you have to do is pass the ID of the image you made in your xml file, like so:
GetImageHeight(R.id.logo)

How to find the Text Area(Height/Width) of TextView programmatically in android

I have an EditText, a Button and a TextView. On clicking the button, textview shows the text written in edittext. Is it possible to find the size of textview occupied depending upon text. i.e. If It has three characters "abc", what is width now, if it has 5 characters like "abcde" , then what is the width ?

Rect bounds = new Rect();
Paint textPaint = textView.getPaint();
textPaint.getTextBounds(text,0,text.length(),bounds);
int height = bounds.height();
int width = bounds.width();
or
textView.setText("bla");
textView.measure(0, 0);
textView.getMeasuredWidth();
textView.getMeasuredHeight();

Please try this:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
TextView edit = (TextView) findViewById(R.id.edit);
edit.setTextSize(20);
edit.setText("Hello, world");
edit.measure(0, 0);
int width = edit.getMeasuredWidth();
Log.w("width", width.toString());
}
Before you get width, you have to measure the view / label / text edit.
Please let me know if this is not working.

TextView txt = new TextView(mContext);
txt.setText("Some Text)";
int height = txt.getLineCount() * txt.getLineHeight();
int width = txt.getWidth();

Try this way,hope this will help you to solve your problem.
yourTextView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
int width = yourTextView.getMeasuredWidth();
int height = yourTextView.getMeasuredHeight();
}
});

please tell me width in??? do you want ?
TextView method getWidth() gives you width of your view, in pixels
TextView textView = (TextView)findViewById(R.id.textview);
textView.getWidth(); //width of your view, in pixels

text wrapping around image in android

I am using list view to show image and text i want to show like above image, can anyone suggest me how to wrap text around image with out webview. I am using following code:
Drawable dIcon = getResources().getDrawable(R.drawable.video_icon);
int leftMargin = dIcon.getIntrinsicWidth() + 10;
ImageView icon = (ImageView) findViewById(R.id.icon);
icon.setBackgroundDrawable(dIcon);
SpannableString ss = new SpannableString(text);
ss.setSpan(new MyLeadingMarginSpan2(3, leftMargin), 0, ss.length(), 0);
TextView messageView = (TextView) findViewById(R.id.message_view);
messageView.setText(ss);
class
class MyLeadingMarginSpan2 implements LeadingMarginSpan2 {
private int margin;
private int lines;
MyLeadingMarginSpan2(int lines, int margin) {
this.margin = margin;
this.lines = lines;
}
#Override
public int getLeadingMargin(boolean first) {
if (first) {
return margin;
} else {
return 0;
}
}
#Override
public void drawLeadingMargin(Canvas c, Paint p, int x, int dir,
int top, int baseline, int bottom, CharSequence text,
int start, int end, boolean first, Layout layout) {}
#Override
public int getLeadingMarginLineCount() {
return lines;
}
};
by using this code iam getting below image pls suggest to how to get first means correct wrapping text around image without more empty spaces

Older post, but since there is no accepted answer and I have just found solution for same problem in my app, I will post a solution.
I have discovered that text without any line break works well.
Text with a line break that splits the text into 2 parts in a way that the part before line break ends to the right of the image, and the part after line break starts already on next line bellow the image, this also works well.
So what I do is I set left margin of the wrapping TextView's LayoutParams to the desired indent, and I set the text into TextView. Then I add OnGlobalLayoutListener, and inside onGlobalLayout callback, I count the position of the last character on the last line to the right of the image
//lines - number of lines to be affected by the leadingMargin
int charCount = textView.getLayout().getLineEnd(Math.min(lines - 1, textView.getLayout().getLineCount() - 1));
If the text does not have more lines than the number of lines that should have the left margin (or if the last character is already line break), I just set the LeadingMarginSpan2 on the whole length of the text.
// s - original Spannable containing the whole text
if (charCount >= s.length() || charCount <= 0 || s.charAt(charCount - 1) == '\n') {
s.setSpan(new MyLeadingMarginSpan(lines, w), 0, charCount, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
textView.setText(s);
}
If the text is longer, I split it into 2 parts (first one ending at the charCount position), insert line break between them, merge them and set the LeadingMarginSpan2 only on the first part.
else {
Spannable s1 = new SpannableStringBuilder(s, 0, charCount);
s1.setSpan(new MyLeadingMarginSpan(lines, w), 0, charCount, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
Spannable s2 = new SpannableStringBuilder(System.getProperty("line.separator"));
Spannable s3 = new SpannableStringBuilder(s, charCount, s.length());
textView.setText(TextUtils.concat(s1, s2, s3));
}
At the end, do not forget to remove the left margin of the TextView's LayoutParams.

If a text in a TextView is longer than the available space, how to get the remaining lines?

I have a long text and i want it to be displayed with a TextView. The text i have is much longer than the available space. However i don't want to use scrolling, but ViewFlipper to flip to the next page. How can i retrieve the lines from the first TextView that are not shown because the view is to short so that i can paste them into the next TextView?
Edit: I found the Solution to my Problem. I simply have to use a custom View with a StaticLayout like this:
public ReaderColumView(Context context, Typeface typeface, String cText) {
super(context);
Display display = ((WindowManager) context.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
dWidth = display.getWidth();
dHeight = display.getHeight();
contentText = cText;
tp = new TextPaint();
tp.setTypeface(typeface);
tp.setTextSize(25);
tp.setColor(Color.BLACK);
tp.setAntiAlias(true);
StaticLayout measureLayout = new StaticLayout(contentText, tp, 440, Alignment.ALIGN_NORMAL, 1, 2, true);
Boolean reachedEndOfScreen = false;
int line = 0;
while (!reachedEndOfScreen) {
if (measureLayout.getLineBottom(line) > dHeight-30) {
reachedEndOfScreen = true;
fittedText = contentText.substring(0, measureLayout.getLineEnd(line-1));
setLeftoverText(contentText.substring(measureLayout.getLineEnd(line-1)));
}
line++;
}
}
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
StaticLayout textLayout = new StaticLayout(fittedText, tp, 440, Alignment.ALIGN_NORMAL, 1, 2, true);
canvas.translate(20,20);
textLayout.draw(canvas);
}
Thats not optimized yet but you get the point.
I hope it might help somebody like me with a similar problem.

As in your answer you can use StaticLayout to measure and draw the text. However,
You should not create a StaticLayout during onDraw, it is very expensive, especially for long text. Instead you should create it once during onMeasure and reuse it.
For your while loop looking for the line to end (while (!reachedEndOfScreen)), you can use StaticLayout.getLineForVertical(int offset).
Instead of substring, or leftOverText you can use indices and pass those indices to StaticLayout for each page.