android SpannableString使用详解

java] view
plaincopy

import android.app.Activity;

import android.graphics.Color;

import android.graphics.Typeface;

import android.graphics.drawable.Drawable;

import android.os.Bundle;

import android.text.Spannable;

import android.text.SpannableString;

import android.text.style.AbsoluteSizeSpan;

import android.text.style.BackgroundColorSpan;

import android.text.style.ForegroundColorSpan;

import android.text.style.ImageSpan;

import android.text.style.StrikethroughSpan;

import android.text.style.StyleSpan;

import android.text.style.URLSpan;

import android.text.style.UnderlineSpan;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.EditText;





public class SpannableStringActivity extends Activity implements

OnClickListener {





private EditText tv;

private Button underline_btn;

private Button strike_btn;

private Button style_btn;

private Button font_btn;

private Button color_btn1;

private Button color_btn2;

private Button url_btn;

private Button image_btn;





/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);





tv = (EditText) this.findViewById(R.id.tv);

underline_btn = (Button) this.findViewById(R.id.underline_btn);

strike_btn = (Button) this.findViewById(R.id.strike_btn);

style_btn = (Button) this.findViewById(R.id.style_btn);

font_btn = (Button) this.findViewById(R.id.font_btn);

color_btn1 = (Button) this.findViewById(R.id.color_btn1);

color_btn2 = (Button) this.findViewById(R.id.color_btn2);

url_btn = (Button) this.findViewById(R.id.url_btn);

image_btn = (Button) this.findViewById(R.id.image_btn);





underline_btn.setOnClickListener(this);

strike_btn.setOnClickListener(this);

style_btn.setOnClickListener(this);

font_btn.setOnClickListener(this);

color_btn1.setOnClickListener(this);

color_btn2.setOnClickListener(this);

url_btn.setOnClickListener(this);

image_btn.setOnClickListener(this);

}





@Override

public void onClick(View v) {

switch (v.getId()) {

case R.id.underline_btn:

addUnderLineSpan();

break;

case R.id.strike_btn:

addStrikeSpan();

break;

case R.id.style_btn:

addStyleSpan();

break;

case R.id.font_btn:

addFontSpan();

break;

case R.id.color_btn1:

addForeColorSpan();

break;

case R.id.color_btn2:

addBackColorSpan();

break;

case R.id.url_btn:

addUrlSpan();

break;

case R.id.image_btn:

addImageSpan();

break;

<span style="white-space:pre"> </span>}

}





/**

* 超链接

*/

private void addUrlSpan() {

SpannableString spanString = new SpannableString("超链接");

URLSpan span = new URLSpan("tel:0123456789");

spanString.setSpan(span, 0, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

tv.append(spanString);

}





/**

* 文字背景颜色

*/

private void addBackColorSpan() {

SpannableString spanString = new SpannableString("颜色2");

BackgroundColorSpan span = new BackgroundColorSpan(Color.YELLOW);

spanString.setSpan(span, 0, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

tv.append(spanString);

}





/**

* 文字颜色

*/

private void addForeColorSpan() {

SpannableString spanString = new SpannableString("颜色1");

ForegroundColorSpan span = new ForegroundColorSpan(Color.BLUE);

spanString.setSpan(span, 0, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

tv.append(spanString);

}





/**

* 字体大小

*/

private void addFontSpan() {

SpannableString spanString = new SpannableString("36号字体");

AbsoluteSizeSpan span = new AbsoluteSizeSpan(36);

spanString.setSpan(span, 0, 5, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

tv.append(spanString);

}





/**

* 粗体，斜体

*/

private void addStyleSpan() {

SpannableString spanString = new SpannableString("BIBI");

StyleSpan span = new StyleSpan(Typeface.BOLD_ITALIC);

spanString.setSpan(span, 0, 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

tv.append(spanString);

}





/**

* 删除线

*/

private void addStrikeSpan() {

SpannableString spanString = new SpannableString("删除线");

StrikethroughSpan span = new StrikethroughSpan();

spanString.setSpan(span, 0, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

tv.append(spanString);

}



/**

* 下划线

*/

private void addUnderLineSpan() {

SpannableString spanString = new SpannableString("下划线");

UnderlineSpan span = new UnderlineSpan();

spanString.setSpan(span, 0, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

tv.append(spanString);

}







/**

* 图片

*/

private void addImageSpan() {

SpannableString spanString = new SpannableString(" ");

Drawable d = getResources().getDrawable(R.drawable.ic_launcher);

d.setBounds(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight());

ImageSpan span = new ImageSpan(d, ImageSpan.ALIGN_BASELINE);

spanString.setSpan(span, 0, 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

tv.append(spanString);

}

}

xml布局文件

[html] view
plaincopy

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:background="#ff333333"

android:orientation="vertical" >







<EditText

android:id="@+id/tv"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:singleLine="false"

android:inputType="none"/>





<GridLayout

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:columnCount="4" >





<Button

android:id="@+id/image_btn"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/image" />





<Button

android:id="@+id/url_btn"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/url" />





<Button

android:id="@+id/color_btn1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/color1" />





<Button

android:id="@+id/color_btn2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/color2" />





<Button

android:id="@+id/font_btn"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/font" />





<Button

android:id="@+id/style_btn"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/style" />





<Button

android:id="@+id/strike_btn"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/strike" />





<Button

android:id="@+id/underline_btn"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/underline" />

</GridLayout>





</LinearLayout>

//http://blog.csdn.net/g475266696/article/details/7668988