为什么80%的码农都做不了架构师？>>>
在做web的时候jsp页面可以直接显示一段html代码，如：
<html><head><title>TextView使用HTML</title></head><body><p><strong>强调</strong></p><p><em>斜体</em></p>"
+"<p><a href=\"/xhtml/\">超链接HTML入门</a>学习HTML!</p><p><font color=\"#aabb00\">颜色1"
+"</p><p><font color=\"#00bbaa\">颜色2</p><h1>标题1</h1><h3>标题2</h3><h6>标题3</h6><p>大于>小于<</p><p>" +
"下面是网络图片</p><img src=\"/img/image/suyan.jpg\"/><img src=\"/img/image/suyan.jpg\"/><img src=\"/img/image/suyan.jpg\"/></body></html>在jsp页面和老版的android 版本之前都可以显示图片，
较早版本的android实现：2.3.3测试
Html html="<html></html>";
TextView tv=(TextView)findViewById(R.id.textView1);
tv.setText(Html.fromHtml(html, imgGetter,null));
ImageGetter imgGetter = new Html.ImageGetter() {
public Drawable getDrawable(String source) {
Toast.makeText(context,source,Toast.LENGTH_LONG).show();
TextView tvs=(TextView)findViewById(R.id.textView);
String ss=tvs.getText()+source+"\n";
tvs.setText(ss);
Log.d("image",source);
Drawable drawable = null;
URL url;
try {
url = new URL(source);
drawable = Drawable.createFromStream(url.openStream(), ""); //获取网路图片
} catch (Exception e) {
return null;
}
drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable
.getIntrinsicHeight());
return drawable;
}
};
我的项目是4.2的以上代码在获取网络图片是就会报错，因为android在之后的版本中不允许在主线程中做比较耗时的操作比如http请求，所以以上代码运行是就会报错！后来自己就对上面的代码做了处理
private Map<String,Bitmap> bitmaps=new HashMap<String,Bitmap>();//存放新闻中图片
private boolean newsImgIsShow=false;//判断新闻中图片是否显示
private List<String> urls=new ArrayList<String>();//存放文章中的图片链接
TextView tvContent=(TextView) findViewById(R.id.tv_news_details_content);
urls.clear();
String strHtml=="<html></html>";
tvContent.setText(Html.fromHtml(strHtml,imgGetter,null));//先把文章赋值给textview
//imgGetter过滤文章中的图片
ImageGetter imgGetter = new Html.ImageGetter() {
public Drawable getDrawable(String source) {
Drawable drawable=null;
//source文章中图片地址
if(newsImgIsShow){//判断图片是否已经获取
//将图片从map中取出
BitmapDrawable bd = new BitmapDrawable(bitmaps.get(source));
drawable=bd;
}else{
//将图片地址添加到列表中
urls.add(source);
//设置默认图片
drawable=getResources().getDrawable(R.drawable.no_photo);
}
drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable
.getIntrinsicHeight());
return drawable;
}
};
final Handler handler=new Handler(){
public void handleMessage(Message msg){
super.handleMessage(msg);
if(msg.what==1){//图片请求成功后重新设置textview
newsImgIsShow=true;
tvContent.setText(Html.fromHtml(strHtml,imgGetter,null));
}
}
};
//开辟子线程请求服务器图片
new Thread(){
public void run(){
try {
for(String url:urls){
Log.d("url",url);
Bitmap bitmap=null;
try {
bitmap=HttpHelper.getURLBitmap(url);//图片请求
if(null==bitmap){
bitmap=BitmapFactory.decodeResource(getResources(), R.drawable.no_photo);
}
} catch (Exception e) {
// TODO: handle exception
bitmap=BitmapFactory.decodeResource(getResources(), R.drawable.no_photo);
}
bitmaps.put(url, bitmap);
}
Message msg=new Message();
msg.what=1;
handler.sendMessage(msg);
} catch (Exception e) {
// TODO: handle exception
}
}
}.start();
