android TextView跟EditText中显示图片

android TextView和EditText中显示图片

EditText（TextView同样处理）。?
添加图片主要用SpannableString和ImageSpan类：

Drawable drawable = getResources().getDrawable(R.drawable.icon);
??? ??? drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
??? ??? SpannableString spannable = new SpannableString(getText(R.id.editText1).toString() + "[smile]");
??? ??? ImageSpan span = new ImageSpan(drawable, ImageSpan.ALIGN_BASELINE);
??? ??? ?spannable.setSpan(span, getText(R.id.editText1).length(),getText(R.id.editText1).length()+"[smile]".length(), Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
??? ??? editText.setText(spannable);

将需要的文字高亮显示：?

public void highlight(int start,int end){          SpannableStringBuilder spannable=new SpannableStringBuilder(getText().toString());//用于可变字符串          ForegroundColorSpan span=new ForegroundColorSpan(Color.RED);          spannable.setSpan(span, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);          setText(spannable);      }  

加下划线：?

public void underline(int start,int end){          SpannableStringBuilder spannable=new SpannableStringBuilder(getText().toString());          CharacterStyle span=new UnderlineSpan();          spannable.setSpan(span, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);          setText(spannable);      }  

组合运用：

SpannableStringBuilder spannable=new SpannableStringBuilder(getText().toString());          CharacterStyle span_1=new StyleSpan(android.graphics.Typeface.ITALIC);          CharacterStyle span_2=new ForegroundColorSpan(Color.RED);          spannable.setSpan(span_1, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);          spannable.setSpan(span_2, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);          setText(spannable);  

案例：带有\n换行符的字符串都可以用此方法显示2种颜色

    /**      * 带有\n换行符的字符串都可以用此方法显示2种颜色      * @param text      * @param color1      * @param color2      * @return      */      public SpannableStringBuilder highlight(String text,int color1,int color2,int fontSize){          SpannableStringBuilder spannable=new SpannableStringBuilder(text);//用于可变字符串          CharacterStyle span_0=null,span_1=null,span_2;          int end=text.indexOf("\n");          if(end==-1){//如果没有换行符就使用第一种颜色显示              span_0=new ForegroundColorSpan(color1);              spannable.setSpan(span_0, 0, text.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);          }else{              span_0=new ForegroundColorSpan(color1);              span_1=new ForegroundColorSpan(color2);              spannable.setSpan(span_0, 0, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);              spannable.setSpan(span_1, end+1, text.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);                            span_2=new AbsoluteSizeSpan(fontSize);//字体大小              spannable.setSpan(span_2, end+1, text.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);          }          return spannable;      }