TextView算是android开发中最最常用的控件了，有的时候，我们要给一个TextView中的显示的文字设置不同的样式或者响应事件，比如同一个TextView中，有的字是红色，有的字是蓝色，有的字点击之后有响应事件，有的点击之后没有响应事件，甚至我们想在TextView中显示一个数学公式等等，那么对于形形色色的需求我们有没有解决方案呢？当然有，一种是使用HTML来解决，另一种就是使用SpannableString，HTML比较简单，本文主要介绍后者。SpannableString可以用来显示复合文本，我们可以通过SpannableString给文本设置各种各样的样式，下面我们就来看看SpannableString的一些常见用法。
tv1 = (TextView) this.findViewById(R.id.tv1);
SpannableString ss1 = new SpannableString("设置背景颜色");
ss1.setSpan(new BackgroundColorSpan(Color.parseColor("#FFD700")), 0,
ss1.length(), Spanned.SPAN_EXCLUSIVE_INCLUSIVE);
tv1.setText(ss1); /**
* Non-0-length spans of type SPAN_INCLUSIVE_EXCLUSIVE expand
* to include text inserted at their starting point but not at their
* ending point. When 0-length, they behave like marks.
*/
public static final int SPAN_INCLUSIVE_EXCLUSIVE = SPAN_MARK_MARK;
/**
* Spans of type SPAN_INCLUSIVE_INCLUSIVE expand
* to include text inserted at either their starting or ending point.
*/
public static final int SPAN_INCLUSIVE_INCLUSIVE = SPAN_MARK_POINT;
/**
* Spans of type SPAN_EXCLUSIVE_EXCLUSIVE do not expand
* to include text inserted at either their starting or ending point.
* They can never have a length of 0 and are automatically removed
* from the buffer if all the text they cover is removed.
*/
public static final int SPAN_EXCLUSIVE_EXCLUSIVE = SPAN_POINT_MARK;
/**
* Non-0-length spans of type SPAN_EXCLUSIVE_INCLUSIVE expand
* to include text inserted at their ending point but not at their
* starting point. When 0-length, they behave like points.
*/
public static final int SPAN_EXCLUSIVE_INCLUSIVE = SPAN_POINT_POINT;
tv1.append("1234"); tv2 = (TextView) this.findViewById(R.id.tv2);
SpannableString ss2 = new SpannableString("点我吧123456");
ss2.setSpan(new ClickableSpan() {
@Override
public void onClick(View widget) {
Log.i("lenve", "tv2---onClick");
Toast.makeText(MainActivity.this, "点我呀", Toast.LENGTH_SHORT)
.show();
}
}, 0, 3, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
tv2.setText(ss2);
// 设置tv2为可点击状态
tv2.setMovementMethod(LinkMovementMethod.getInstance());
tv3 = (TextView) this.findViewById(R.id.tv3);
SpannableString ss3 = new SpannableString("设置文本颜色");
ss3.setSpan(new ForegroundColorSpan(Color.parseColor("#FF3030")), 0,
ss3.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
tv3.setText(ss3);
tv6 = (TextView) this.findViewById(R.id.tv6);
SpannableString ss6 = new SpannableString("删除线");
ss6.setSpan(new StrikethroughSpan(), 0, ss6.length(),
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
tv6.setText(ss6);
tv7 = (TextView) this.findViewById(R.id.tv7);
SpannableString ss7 = new SpannableString("下划线");
ss7.setSpan(new UnderlineSpan(), 0, ss7.length(),
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
tv7.setText(ss7); tv8 = (TextView) this.findViewById(R.id.tv8);
SpannableString ss8 = new SpannableString("设置图片");
ss8.setSpan(
// DynamicDrawableSpan.ALIGN_BASELINE表示依照基线对齐
// DynamicDrawableSpan.ALIGN_BOTTOM表示依照底部对齐
new DynamicDrawableSpan(DynamicDrawableSpan.ALIGN_BOTTOM) {
@Override
public Drawable getDrawable() {
Drawable d = getResources().getDrawable(
R.drawable.ic_launcher);
d.setBounds(0, 0, 150, 150);
return d;
}
}, 0, 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);// 这里的参数0，1表示将“设”字替换为图片
tv8.setText(ss8);
tv9 = (TextView) this.findViewById(R.id.tv9);
SpannableString ss9 = new SpannableString("基于X轴缩放");
// ScaleXSpan中的参数大于1表示横向扩大，小于1大于0表示缩小，等于1表示正常显示
ss9.setSpan(new ScaleXSpan(2), 0, ss9.length(),
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
tv9.setText(ss9);只需要在setSpan方法中传入一个ScaleXSpan对象即可，里边参数含义看注释。
tv10 = (TextView) this.findViewById(R.id.tv10);
SpannableString ss10 = new SpannableString("字体样式，粗体、斜体等");
ss10.setSpan(new StyleSpan(Typeface.BOLD), 5, 7,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
tv10.setText(ss10);
tv11 = (TextView) this.findViewById(R.id.tv11);
SpannableString ss11 = new SpannableString("(x1 + x2)2 = x12+x22+2x1x2");
// 设置下标
ss11.setSpan(new SubscriptSpan(), 2, 3,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
// 设置下标字体大小
ss11.setSpan(new AbsoluteSizeSpan(30), 2, 3,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss11.setSpan(new SubscriptSpan(), 7, 8,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss11.setSpan(new AbsoluteSizeSpan(30), 7, 8,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss11.setSpan(new SubscriptSpan(), 14, 15,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss11.setSpan(new AbsoluteSizeSpan(30), 14, 15,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss11.setSpan(new SubscriptSpan(), 18, 19,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss11.setSpan(new AbsoluteSizeSpan(30), 18, 19,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss11.setSpan(new SubscriptSpan(), 23, 24,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss11.setSpan(new AbsoluteSizeSpan(30), 23, 24,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss11.setSpan(new SubscriptSpan(), 25, 26,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss11.setSpan(new AbsoluteSizeSpan(30), 25, 26,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
// 设置上标
ss11.setSpan(new SuperscriptSpan(), 9, 10,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss11.setSpan(new AbsoluteSizeSpan(30), 9, 10,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss11.setSpan(new SuperscriptSpan(), 15, 16,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss11.setSpan(new AbsoluteSizeSpan(30), 15, 16,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss11.setSpan(new SuperscriptSpan(), 19, 20,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss11.setSpan(new AbsoluteSizeSpan(30), 19, 20,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
tv11.setText(ss11); tv13 = (TextView) this.findViewById(R.id.tv13);
SpannableString ss13 = new SpannableString("打电话，发短信，发邮件，打开网页");
ss13.setSpan(new URLSpan("tel:13534884482"), 0, 3,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss13.setSpan(new URLSpan("smsto:13534884482"), 4, 7,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss13.setSpan(new URLSpan("mailto:584991843@qq.com"), 8, 11,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss13.setSpan(new URLSpan("http://www.baidu.com"), 12, 16,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
tv13.setText(ss13);
tv13.setMovementMethod(LinkMovementMethod.getInstance());
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原文：http://blog.csdn.net/u012702547/article/details/49895157