Android 动态图文混排的经常使用方法

DrawableIcon的设置

对于TextView或者EditText动态设置drawableLeft，drawableRight，drawableTop，drawableBottom，drawableStart，drawableEnd的方法总结

Android中提供了许多动态设置的方法

可是用中容易形成的问题是，咱们每每只调用了如上的一些方法，但并无将Drawable的Bounds设置为特定的数据，致使这些图片没法显示，所以，作以下操做便可

设置右方向上的图片

Drawable drawable = getResources().getDrawable(R.drawable.hotel_search);
drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
selectCityTv.setCompoundDrawables(null, null, drawable, null);

或者咱们可使用另一些方法

selectCityTv.setCompoundDrawablesWithIntrinsicBounds( Drawable  left, Drawable  top,Drawable  right,Drawable  bottom)

TextPaint+Html实现TextView图文混排

• 一.使用SpannableString

• 二.使用 TextPaint

• Android学习—— TextView ClickableSpan 点击连接事件 改超连接颜色

使用SpannableString

实现URL的自动匹配：

URLSpan能够自行匹配，Image须要使用到Html，这基本解决了80%的开发需求

 TextView tv = (TextView) findViewById(R.id.myTextView);
                 
                tv.setMovementMethod(LinkMovementMethod.getInstance());
                String htmlSource = "<a href='http://m.baidu.com'>百度</a>" +
                        "<br/>图1<br/><img src='ic_hua1'/>" +
                        "<br/>图2<br/><img src='ic_hua2'/>" +
                        "<br/>图3<br/><img src='ic_hua3'/>" +
                        "<br/>图4<br/><img src='ic_hua4'/>" +
                        "<br/><a href='http://m.sina.com.cn'>新浪</a>"+
                        "<br/>联系电话：<a href='tel:130888954276'>130888954276</a>";
                resources = getResources();
                CharSequence charSequence = Html.fromHtml(htmlSource,new Html.ImageGetter() {
                    @Override
                    public Drawable getDrawable(String source) {
                        int identifier = resources.getIdentifier(source, "drawable", getPackageName());
                        Log.e("identifier", "identifier="+identifier);
                        Drawable drawable = resources.getDrawable(identifier);
                        drawable.setBounds(0,0,drawable.getIntrinsicWidth(),drawable.getIntrinsicHeight());
                          
                         return drawable;
                    }
                },null);
                 
                SpannableString spanStr = new SpannableString(charSequence);
                 
                URLSpan[] urlspans = spanStr.getSpans(0, spanStr.length(), URLSpan.class);
                for (URLSpan urlspan : urlspans) 
                {
                    Log.d("url", "url="+urlspan.getURL());
                    spanStr.setSpan(new URLSpan(urlspan.getURL()){
                        @Override
                        public void updateDrawState(TextPaint ds) {
                            super.updateDrawState(ds);
                            //设置删除线
                            ds.setFlags(TextPaint.STRIKE_THRU_TEXT_FLAG);
                            //设置下划线
                            ds.setUnderlineText(true);
                            //设置颜色
                            ds.setColor(0xfff90202);
                        }
                        @Override
                        public void onClick(View widget) {
                            Log.e("widget", "url="+getURL());
                            try {
                                URI uri = new URI(getURL());
                                if("http".equalsIgnoreCase(uri.getScheme()) || "https".equalsIgnoreCase(uri.getScheme()))
                                {
                                    //网络请求
                                }else if("tel".equalsIgnoreCase(uri.getScheme())){
                                    //电话
                                }
                                else if("mailto".equalsIgnoreCase(uri.getScheme()))
                                {
                                    //邮箱
                                }else if("page".equalsIgnoreCase(uri.getScheme())){
                                    //Activity 跳转
                                }
                            } catch (URISyntaxException e) {
                                e.printStackTrace();
                            }
                        }
                         
                    }, spanStr.getSpanStart(urlspan), spanStr.getSpanEnd(urlspan), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                }
                tv.setText(spanStr);

相似QQ的气泡上的图片，不必定是表情图片，所以，这里咱们须要实现异步加载图片的方案，具体实现使用ImageLoader便可

使用 TextPaint修改画笔

TextPaint 属于原始的绘制工具
TextPaint tp = textView.getPaint();
咱们经过设置画壁来实现图文混排
tp.setXXX

ClickableSpan,URLSpan点击时的高亮背景色

点击时容易出现默认背景色，可是没法经过setBgColor来修改

结局这种淡绿色高亮的方法以下

((TextView)view).setHighlightColor(getResources().getColor(android.R.color.transparent));

try doing it