java-如何在android中将RGB转换为十六进制颜色？

这个问题已经在这里有了答案：            >            Convert RGBA values to hex color code                                    2个
如何将ARGB(255 0 255 0)颜色转换为十六进制颜色.我的数据库中有ARGB颜色,我使用JSON格式的Web服务进行检索.我想在文本字段TAG_DIFF_P(R.id.l7)中添加颜色

here it my code, how to add color in background in the text field

try {

        JSONObject json1 = jParser.getJSONFromUrl(myUrl);
        // Getting Array of Contacts
        JSONArray list = json1.getJSONArray(TAG_JSONDataResult);


        // looping through All Contacts
        for(int i = 0; i < list.length(); i++){
            JSONObject c = list.getJSONObject(i);


            String GRPNAME = c.getString(TAG_GRPNAME);
            String QTY = c.getString(TAG_QNT);
            String BUDGET = c.getString(TAG_BUDGET);
            String STOCK = c.getString(TAG_STOCK);
            String DIFF = c.getString(TAG_DIFF);
            String DIFF_P = c.getString(TAG_DIFF_P);                
            String COLOR = c.getString(TAG_COLOR);


            // creating new HashMap
            HashMap<String, String> map = new HashMap<String, String>();

            // adding each child node to HashMap key => value

            map.put(TAG_GRPNAME, GRPNAME);
            map.put(TAG_QNT, QTY);
            map.put(TAG_BUDGET, BUDGET);
            map.put(TAG_STOCK, STOCK);
            map.put(TAG_DIFF, DIFF);
            map.put(TAG_DIFF_P, DIFF_P);


            // adding HashList to ArrayList
            contactList.add(map);
        }
    } catch (JSONException e) {
        e.printStackTrace();
    }
    /**
     * Updating parsed JSON data into ListView
     * */
     ListAdapter adapter = new SimpleAdapter(this, contactList,
            R.layout.list_item,
            new String[] {  TAG_GRPNAME, TAG_QNT, TAG_BUDGET, TAG_STOCK, TAG_DIFF, TAG_DIFF_P, },
            new int[] {
                     R.id.l2, R.id.l3, R.id.l4, R.id.l5, R.id.l6, R.id.l7});



            lv2.setAdapter(adapter);



}

解决方法:

我认为您的json应该具有String形式.如果是这样,您可以尝试一下

String hex = String.format("#%02x%02x%02x", r, g,b);

标签：colors,hex,argb,java,android
来源： https://codeday.me/bug/20191030/1969437.html