LineBreaker クラス

定義

[Android.Runtime.Register("android/graphics/text/LineBreaker", ApiSince=29, DoNotGenerateAcw=true)]
public class LineBreaker : Java.Lang.Object

[<Android.Runtime.Register("android/graphics/text/LineBreaker", ApiSince=29, DoNotGenerateAcw=true)>]
type LineBreaker = class
    inherit Object

継承

Object

JavaObject

Object

LineBreaker

属性

RegisterAttribute

注釈

<em>single</em> 段落の自動改行を提供します。

<code>
            Paint paint = new Paint();
            Paint bigPaint = new Paint();
            bigPaint.setTextSize(paint.getTextSize() * 2.0);
            String text = "Hello, Android.";

            // Prepare the measured text
            MeasuredText mt = new MeasuredText.Builder(text.toCharArray())
                .appendStyleRun(paint, 7, false)  // Use paint for "Hello, "
                .appednStyleRun(bigPaint, 8, false)  // Use bigPaint for "Hello, "
                .build();

            LineBreaker lb = new LineBreaker.Builder()
                // Use simple line breaker
                .setBreakStrategy(LineBreaker.BREAK_STRATEGY_SIMPLE)
                // Do not add hyphenation.
                .setHyphenationFrequency(LineBreaker.HYPHENATION_FREQUENCY_NONE)
                // Build the LineBreaker
                .build();

            ParagraphConstraints c = new ParagraphConstraints();
            c.setWidth(240);  // Set the line wieth as 1024px

            // Do the line breaking
            Result r = lb.computeLineBreaks(mt, c, 0);

            // Compute the total height of the text.
            float totalHeight = 0;
            for (int i = 0; i < r.getLineCount(); ++i) {  // iterate over the lines
               totalHeight += r.getLineDescent(i) - r.getLineAscent(i);
            }

            // Draw text to the canvas
            Bitmap bmp = Bitmap.createBitmap(240, totalHeight, Bitmap.Config.ARGB_8888);
            Canvas c = new Canvas(bmp);
            float yOffset = 0f;
            int prevOffset = 0;
            for (int i = 0; i < r.getLineCount(); ++i) {  // iterate over the lines
                int nextOffset = r.getLineBreakOffset(i);
                c.drawText(text, prevOffset, nextOffset, 0f, yOffset, paint);

                prevOffset = nextOffset;
                yOffset += r.getLineDescent(i) - r.getLineAscent(i);
            }
</code>

/p< を >する

Javaドキュメント。

このページの一部は、によって作成および共有され、に記載されている条件に従って使用される作業に基づく変更です。