SpannableString使用詳解:
1、BackgroundColorSpan 背景色
2、ClickableSpan 文本可點擊,有點擊事件
3、ForegroundColorSpan 文本顏色(前景色)
4、MaskFilterSpan 修飾效果,如模糊(BlurMaskFilter)、浮雕(EmbossMaskFilter)
5、MetricAffectingSpan 父類,一般不用
6、RasterizerSpan
光柵效果
7、StrikethroughSpan
刪除線(中劃線)
8、SuggestionSpan
相當於佔位符
9、UnderlineSpan
下劃線
10、AbsoluteSizeSpan
絕對大小(文本字體)
11、DynamicDrawableSpan
設置圖片,基於文本基線或底部對齊。
12、ImageSpan
圖片
13、RelativeSizeSpan
相對大小(文本字體)
14、ReplacementSpan
父類,一般不用
15、ScaleXSpan
基於x軸縮放
16、StyleSpan
字體樣式:粗體、斜體等
17、SubscriptSpan
下標(數學公式會用到)
18、SuperscriptSpan
上標(數學公式會用到)
19、TextAppearanceSpan
文本外貌(包括字體、大小、樣式和顏色)
20、TypefaceSpan
文本字體
21、URLSpan 文本超鏈接
下面舉部分例子:
BackgroundColorSpan 背景色:
SpannableString spanText = new SpannableString("benzlocke");
spanText.setSpan(new BackgroundColorSpan(Color.GREEN), 0, spanText.length(),
Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
mTVText.append("\n");
mTVText.append(spanText);
ForegroundColorSpan 文本顏色(前景色):
spanText = new SpannableString("benzlocke");
spanText.setSpan(new ForegroundColorSpan(Color.BLUE), 6, spanText.length(),
Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
mTVText.append("\n");
mTVText.append(spanText);
MaskFilterSpan 修飾效果,如模糊(BlurMaskFilter)、浮雕(EmbossMaskFilter):
spanText = new SpannableString("benzlocke");
int length = spanText.length();
//模糊(BlurMaskFilter)
MaskFilterSpan maskFilterSpan = new MaskFilterSpan(new BlurMaskFilter(3, Blur.OUTER));
spanText.setSpan(maskFilterSpan, 0, length - 10, Spannable.
SPAN_INCLUSIVE_EXCLUSIVE);
//浮雕(EmbossMaskFilter)
maskFilterSpan = new MaskFilterSpan(new EmbossMaskFilter(new float[]{1,1,3}, 1.5f, 8, 3));
spanText.setSpan(maskFilterSpan, length - 10, length, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
mTVText.append("\n");
mTVText.append(spanText);
RasterizerSpan 光柵效果:
spanText = new SpannableString("StrikethroughSpan");
spanText.setSpan(new StrikethroughSpan(), 0, 7, Spannable.
SPAN_INCLUSIVE_EXCLUSIVE);
mTVText.append("\n");
mTVText.append(spanText);
StrikethroughSpan 刪除線:
spanText = new SpannableString("StrikethroughSpan");
spanText.setSpan(new StrikethroughSpan(), 0, 7, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
mTVText.append("\n");
mTVText.append(spanText);
SuggestionSpan:
UnderlineSpan 下劃線:
spanText = new SpannableString("UnderlineSpan");
spanText.setSpan(new UnderlineSpan(), 0, spanText.length(),
Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
mTVText.append("\n");
mTVText.append(spanText);
AbsoluteSizeSpan 絕對大小(文本字體):
spanText = new SpannableString("AbsoluteSizeSpan");
spanText.setSpan(new AbsoluteSizeSpan(20, true), 0, spanText.length(),
Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
mTVText.append("\n");
mTVText.append(spanText);
DynamicDrawableSpan 設置圖片,基於文本基線或底部對齊。
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);
//左邊圖片基於基線對齊,右邊圖片基於底部對齊
ImageSpan 圖片:
spanText = new SpannableString("ImageSpan");
Drawable d = getResources().getDrawable(R.drawable.ic_launcher);
d.setBounds(0, 0, 50, 50);
spanText.setSpan(new ImageSpan(d), 3, 4, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
mTVText.append("\n");
mTVText.append(spanText);
//和DynamicDrawableSpan差別不大
RelativeSizeSpan 相對大小(文本字體):
spanText = new SpannableString("RelativeSizeSpan");
//參數proportion:比例大小
spanText.setSpan(new RelativeSizeSpan(2.5f), 3, 4,
Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
mTVText.append("\n");
mTVText.append(spanText);
//相對大小的比例是基於當前文本字體大小
ScaleXSpan 基於x軸縮放:
spanText = new SpannableString("benzlocke");
//參數proportion:比例大小
spanText.setSpan(new ScaleXSpan(3.8f), 3, 7, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
mTVText.append("\n");
mTVText.append(spanText);
StyleSpan 字體樣式:粗體、斜體等
spanText = new SpannableString("benzlocke");
//Typeface.BOLD_ITALIC:粗體+斜體
spanText.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 3, 7,
Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
mTVText.append("\n");
mTVText.append(spanText);
SubscriptSpan 下標(數學公式會用到)
spanText = new SpannableString("benzlocke");
spanText.setSpan(new SubscriptSpan(), 6, 7, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
mTVText.append("\n");
mTVText.append(spanText);
SuperscriptSpan 上標(數學公式會用到)
spanText = new SpannableString("benzlocke");
spanText.setSpan(new SuperscriptSpan(), 6, 7, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
mTVText.append("\n");
mTVText.append(spanText);
TextAppearanceSpan 文本外貌(包括字體、大小、樣式和顏色)
spanText = new SpannableString("benzlocke");
//若需自定義TextAppearance,可以在系統樣式上進行修改
spanText.setSpan(new TextAppearanceSpan(this, android.R.style.TextAppearance_Medium), 6, 7, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
mTVText.append("\n");
mTVText.append(spanText);
//系統還提供了相關值TextAppearance_Small, TextAppearance_Large等。如有需要可在以上樣式基礎上修改。
TypefaceSpan 文本字體
spanText = new SpannableString("benzlocke");
//若需使用自定義字體,可能要重寫類TypefaceSpan
spanText.setSpan(new TypefaceSpan("monospace"), 3, 10,
Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
mTVText.append("\n");
mTVText.append(spanText);
//關於自定義字體的設置,後面將介紹如何使用
URLSpan 文本超鏈接
spanText = new SpannableString("benzlocke");
spanText.setSpan(new URLSpan("http://orgcent.com"), 10, spanText.length(),
Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
mTVText.append("\n");
mTVText.append(spanText);
//讓URLSpan可以點擊
mTVText.setMovementMethod(new LinkMovementMethod());