android SpannableString使用详解

[java] view plain copy print ?

importandroid.app.Activity;
importandroid.graphics.Color;
importandroid.graphics.Typeface;
importandroid.graphics.drawable.Drawable;
importandroid.os.Bundle;
importandroid.text.Spannable;
importandroid.text.SpannableString;
importandroid.text.style.AbsoluteSizeSpan;
importandroid.text.style.BackgroundColorSpan;
importandroid.text.style.ForegroundColorSpan;
importandroid.text.style.ImageSpan;
importandroid.text.style.StrikethroughSpan;
importandroid.text.style.StyleSpan;
importandroid.text.style.URLSpan;
importandroid.text.style.UnderlineSpan;
importandroid.view.View;
importandroid.view.View.OnClickListener;
importandroid.widget.Button;
importandroid.widget.EditText;
publicclassSpannableStringActivityextendsActivityimplements
OnClickListener{
privateEditTexttv;
privateButtonunderline_btn;
privateButtonstrike_btn;
privateButtonstyle_btn;
privateButtonfont_btn;
privateButtoncolor_btn1;
privateButtoncolor_btn2;
privateButtonurl_btn;
privateButtonimage_btn;
/**Calledwhentheactivityisfirstcreated.*/
@Override
publicvoidonCreate(BundlesavedInstanceState){
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
publicvoidonClick(Viewv){
switch(v.getId()){
caseR.id.underline_btn:
addUnderLineSpan();
break;
caseR.id.strike_btn:
addStrikeSpan();
break;
caseR.id.style_btn:
addStyleSpan();
break;
caseR.id.font_btn:
addFontSpan();
break;
caseR.id.color_btn1:
addForeColorSpan();
break;
caseR.id.color_btn2:
addBackColorSpan();
break;
caseR.id.url_btn:
addUrlSpan();
break;
caseR.id.image_btn:
addImageSpan();
break;
<SPANstyle="WHITE-SPACE:pre"></SPAN>}
}
/**
*超链接
*/
privatevoidaddUrlSpan(){
SpannableStringspanString=newSpannableString("超链接");
URLSpanspan=newURLSpan("tel:0123456789");
spanString.setSpan(span,0,3,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
tv.append(spanString);
}
/**
*文字背景颜色
*/
privatevoidaddBackColorSpan(){
SpannableStringspanString=newSpannableString("颜色2");
BackgroundColorSpanspan=newBackgroundColorSpan(Color.YELLOW);
spanString.setSpan(span,0,3,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
tv.append(spanString);
}
/**
*文字颜色
*/
privatevoidaddForeColorSpan(){
SpannableStringspanString=newSpannableString("颜色1");
ForegroundColorSpanspan=newForegroundColorSpan(Color.BLUE);
spanString.setSpan(span,0,3,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
tv.append(spanString);
}
/**
*字体大小
*/
privatevoidaddFontSpan(){
SpannableStringspanString=newSpannableString("36号字体");
AbsoluteSizeSpanspan=newAbsoluteSizeSpan(36);
spanString.setSpan(span,0,5,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
tv.append(spanString);
}
/**
*粗体，斜体
*/
privatevoidaddStyleSpan(){
SpannableStringspanString=newSpannableString("BIBI");
StyleSpanspan=newStyleSpan(Typeface.BOLD_ITALIC);
spanString.setSpan(span,0,2,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
tv.append(spanString);
}
/**
*删除线
*/
privatevoidaddStrikeSpan(){
SpannableStringspanString=newSpannableString("删除线");
StrikethroughSpanspan=newStrikethroughSpan();
spanString.setSpan(span,0,3,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
tv.append(spanString);
}
/**
*下划线
*/
privatevoidaddUnderLineSpan(){
SpannableStringspanString=newSpannableString("下划线");
UnderlineSpanspan=newUnderlineSpan();
spanString.setSpan(span,0,3,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
tv.append(spanString);
}
/**
*图片
*/
privatevoidaddImageSpan(){
SpannableStringspanString=newSpannableString("");
Drawabled=getResources().getDrawable(R.drawable.ic_launcher);
d.setBounds(0,0,d.getIntrinsicWidth(),d.getIntrinsicHeight());
ImageSpanspan=newImageSpan(d,ImageSpan.ALIGN_BASELINE);
spanString.setSpan(span,0,1,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
tv.append(spanString);
}
}

xml布局文件

[html] view plain copy print ?

<?xmlversion="1.0"encoding="utf-8"?>
<LinearLayoutxmlns: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>

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