AutoSizingTextView

Transcript

1. AUTOSIZING TEXTVIEW

2. HELLO ABOUT ME @kettsun0123

3. AUTORESIZING TEXTVIEW AutosizingTextView

4. WHAT IS AUTOSIZING TEXTVIEW? AUTOSIZING TEXTVIEW IS… ▸ Android O

   (API 26) ~ ▸ ϨΠΞ΢τʹ͋ͬͨϑΥϯταΠζΛ ࣗಈͰબఆͯ͘͠ΕΔ ▸ supportϥΠϒϥϦ΋͋ΔΑ

5. AUTORESIZING TEXTVIEW ࢖͏ͱ͖ʹؾΛ͚ͭΔ͜ͱ

6. AUTOSIZING TEXTVIEW 1. layout_̋̋=“wrap_content” 2. android:singleLine=“true”

7. AUTOSIZING TEXTVIEW 1. layout_̋̋=“wrap_content” 2. android:singleLine=“true”

8. AUTOSIZING TEXTVIEW layout_height=“wrap_content”

9. AUTOSIZING TEXTVIEW

10. AUTOSIZING TEXTVIEW layout_width=“wrap_content”

11. AUTOSIZING TEXTVIEW

12. AUTOSIZING TEXTVIEW

13. AUTOSIZING TEXTVIEW if (mEllipsize != TextUtils.TruncateAt.MARQUEE) { // In a

    fixed-height view, so use our new text layout. if (mLayoutParams.height != LayoutParams.WRAP_CONTENT && mLayoutParams.height != LayoutParams.MATCH_PARENT) { autoSizeText(); invalidate(); return; } // Dynamic height, but height has stayed the same, // so use our new text layout. if (mLayout.getHeight() == oldht && (mHintLayout == null || mHintLayout.getHeight() == oldht)) { autoSizeText(); invalidate(); return; } } TextView.java > checkForRelayout()

14. AUTOSIZING TEXTVIEW @Override protected void onLayout(boolean changed, int left, int

    top, int right, int bottom) { super.onLayout(changed, left, top, right, bottom); if (mDeferScroll >= 0) { int curs = mDeferScroll; mDeferScroll = -1; bringPointIntoView(Math.min(curs, mText.length())); } // Call auto-size after the width and height have been calculated. autoSizeText(); } TextView.java > onLayout(c, l, t, r, b)

15. AUTOSIZING TEXTVIEW “wrap_content”

16. AUTOSIZING TEXTVIEW 1. layout_̋̋=“wrap_content” 2. android:singleLine=“true”

17. AUTOSIZING TEXTVIEW

18. AUTOSIZING TEXTVIEW TextView.java > applySingleLine(s, a, c) private void applySingleLine(boolean

    singleLine, boolean applyTransformation, boolean changeMaxLines) { mSingleLine = singleLine; if (singleLine) { setLines(1); setHorizontallyScrolling(true); ɹɹɹɹ ...

19. AUTORESIZING TEXTVIEW android:singleLine=“true”

20. CONCLUSION 1. layout_̋̋=“wrap_content” 2. android:singleLine=“true”

21. FIN Thanks:)