EditText的Hint设置为图标+文字

        //输入框中 图标+留言
        leaveMessageEdit = (EditText)this.findViewById(R.id.leave_message);
        //空格是为了空出位置放图标
        SpannableString leaveMessageStr = new SpannableString( " " +getResources().getText(R.string.leave_message));
        Drawable writePenDraw = getResources().getDrawable(R.drawable.write_pen);
        writePenDraw.setBounds(0, 0, writePenDraw.getIntrinsicWidth(),
                writePenDraw.getIntrinsicHeight());
        ImageSpan imageSpan = new ImageSpan(writePenDraw, ImageSpan.ALIGN_BASELINE);
        // 0与1是图标放置在leaveMessageStr中的位置（开始位置与结束位置），在这里表示上述的空格
        leaveMessageStr.setSpan(imageSpan, 0 , 1 , Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
        leaveMessageEdit.setHint(leaveMessageStr);

效果图如下：