Android UI component-textview and its subclass (3) editview

Editview and textview are similar in usage, but the text can be edited.

TIPS:

Set edittext to hide the keyboard
(Edittext) mMarket. setinputtype (0 );

Setting edittext is not covered by the Input Method
Getwindow (). setsoftinputmode (windowmanager. layoutparams. soft_input_adjust_resize );

Error prompt box (required for verification ):

Seterror ();

If you want to add various effects to the text content in the code, use spannablestring

The Android system uses the spannablestring class to process specified text. Specific functions include:

1. backgroundcolorspan background color

Spannablestring spantext = new spannablestring ("background text"); spantext. setspan (New backgroundcolorspan (color. green), 0, spantext. length (), spannable. span_inclusive_exclusive); mtvtext. append ("\ n"); mtvtext. append (spantext );

2. clickablespan text clickable, with click events

Textview TV = findviewbyid (R. id. TV _click); spannablestring spstr = new spannablestring ("clicked text"); clickspan = new nolineclickspan (VO); // set the spstr hyperlink. setspan (clickspan, 0, str. length (), spanned. span_inclusive_exclusive); TV. append (spstr); TV. setmovementmethod (linkmovementmethod. getinstance (); // set the hyperlink to clickable TV. setmovementmethod (linkmovementmethod. getinstance ());

3. foregroundcolorspan text color (foreground color)

Spantext = new spannablestring ("color text"); spantext. setspan (New foregroundcolorspan (color. blue), 6, spantext. length (), spannable. span_inclusive_exclusive); mtvtext. append ("\ n"); mtvtext. append (spantext );

4. maskfilterspan modifier effects, such as blurmaskfilter and embossmaskfilter)

Spantext = new spannablestring ("maskfilterspan"); int length = spantext. length (); // blur (blurmaskfilter) maskfilterspan = new maskfilterspan (New blurmaskfilter (3, blur. outer); spantext. setspan (maskfilterspan, 0, length-10, spannable. span_inclusive_exclusive); // embossmaskfilter maskfilterspan = new maskfilterspan (New embossmaskfilter (new float [] {, 3}, 1.5f, 8, 3); spantext. setspan (maskfilterspan, length-10, length, spannable. span_inclusive_exclusive); mtvtext. append ("\ n"); mtvtext. append (spantext );

5. metricaffectingspan parent class, generally not used

6. rasterizerspan grating effect

spanText = new SpannableString("StrikethroughSpan");spanText.setSpan(new StrikethroughSpan(), 0, 7, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);mTVText.append("\n");mTVText.append(spanText);

7. strikethroughspan strikethrough)

spanText = new SpannableString("StrikethroughSpan");spanText.setSpan(new StrikethroughSpan(), 0, 7, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);mTVText.append("\n");mTVText.append(spanText);

8. suggestionspan is equivalent to a placeholder which is generally used in the edittext input box. When you double-click the text, a prompt box will pop up to select some recommended text. The selected text will replace the placeholder. Most of the input methods are used.

9. underlinespan underline

spanText = new SpannableString("UnderlineSpan");spanText.setSpan(new UnderlineSpan(), 0, spanText.length(),Spannable.SPAN_INCLUSIVE_EXCLUSIVE);mTVText.append("\n");mTVText.append(spanText);

10. absolutesizespan absolute size (text font)

spanText = new SpannableString("AbsoluteSizeSpan");spanText.setSpan(new AbsoluteSizeSpan(20, true), 0, spanText.length(),Spannable.SPAN_INCLUSIVE_EXCLUSIVE);mTVText.append("\n");mTVText.append(spanText);

11. Set the Image Based on the text baseline or bottom alignment in dynamicdrawablespan.

DynamicDrawableSpan drawableSpan = new DynamicDrawableSpan(DynamicDrawableSpan.ALIGN_BASELINE) {    @Override    public Drawable getDrawable() {        Drawable d = getResources().getDrawable(R.drawable.ic_launcher);        d.setBounds(0, 0, 50, 50);        return d;    }};DynamicDrawableSpan drawableSpan2 = new DynamicDrawableSpan(DynamicDrawableSpan.ALIGN_BOTTOM) {    @Override    public Drawable getDrawable() {          Drawable d = getResources().getDrawable(R.drawable.ic_launcher);          d.setBounds(0, 0, 50, 50);                return d;            }        };spanText.setSpan(drawableSpan, 3, 4, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);spanText.setSpan(drawableSpan2, 7, 8, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);mTVText.append("\n");mTVText.append(spanText);

12. imagespan Image

spanText = new SpannableString("ImageSpan");Drawable d = getResources().getDrawable(R.drawable.ic_launcher);</strong>d.setBounds(0, 0, 50, 50);spanText.setSpan(new ImageSpan(d), 3, 4, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);mTVText.append("\n");mTVText.append(spanText);

13. Relative relativesizespan size (text font)

Spantext = new spannablestring ("relativesizespan"); // parameter proportion: proportional size spantext. setspan (New relativesizespan (2.5f), 3, 4, spannable. span_inclusive_exclusive); mtvtext. append ("\ n"); mtvtext. append (spantext );

14. replacementspan parent class, generally not used

15. scalexspan scales based on the X axis

Spantext = new spannablestring ("hello"); // parameter proportion: proportional size spantext. setspan (New scalexspan (3.8f), 3, 7, spannable. span_inclusive_exclusive); mtvtext. append ("\ n"); mtvtext. append (spantext );

16. stylespan Font Style: bold and italic

Spantext = new spannablestring ("stylespan"); // typeface. bold_italic: bold + italic spantext. setspan (New stylespan (typeface. bold_italic), 3, 7, spannable. span_inclusive_exclusive); mtvtext. append ("\ n"); mtvtext. append (spantext );

17. subscriptspan subscript (used in mathematical formulas)

spanText = new SpannableString("SubscriptSpan ");spanText.setSpan(new SubscriptSpan(), 6, 7, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);mTVText.append("\n");mTVText.append(spanText);

18. superscriptspan tagging (used in mathematical formulas)

spanText = new SpannableString("SuperscriptSpan ");spanText.setSpan(new SuperscriptSpan(), 6, 7, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);mTVText.append("\n");mTVText.append(spanText);

19. textappearancespan text appearance (including font, size, style, and color)

Spantext = new spannablestring ("textappearancespan"); // to customize textappearance, you can modify the spantext in the system style. setspan (New textappearancespan (this, android. r. style. textappearance_medium), 6, 7, spannable. span_inclusive_exclusive); mtvtext. append ("\ n"); mtvtext. append (spantext );

20. typefacespan text font

Spantext = new spannablestring ("typefacespan"); // to use a Custom font, you may need to override the typefacespanspantext class. setspan (New typefacespan ("monospace"), 3, 10, spannable. span_inclusive_exclusive); mtvtext. append ("\ n"); mtvtext. append (spantext );

21. urlspan text hyperlink

Spantext = new spannablestring ("urlspan"); spantext. setspan (New urlspan ("http://orgcent.com"), 10, spantext. length (), spannable. span_inclusive_exclusive); mtvtext. append ("\ n"); mtvtext. append (spantext); // enables urlspan to click mtvtext. setmovementmethod (New linkmovementmethod ());