java 如何在android中将RGB转换为HEXADECIMAL颜色？
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how to convert RGB to HEXADECIMAL color in android?
提问by ibu
How to convert ARGB(255 0 255 0)color to HEXADECIMALcolor. I have ARGB color in database and I retrieve using webservices in JSON format.
I want to put color in the text field TAG_DIFF_P (R.id.l7)
如何将ARGB(255 0 255 0)颜色转换为HEXADECIMAL颜色。我在数据库中有 ARGB 颜色，我使用 JSON 格式的网络服务进行检索。
我想在文本字段中添加颜色TAG_DIFF_P (R.id.l7)
here it my code, how to add color in background in the text field
这是我的代码，如何在文本字段的背景中添加颜色
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);
}
回答by Veera
I think your json should has it as String. If it is so you can try this
我认为您的 json 应该将其作为字符串。如果是这样你可以试试这个
String hex = String.format("#%02x%02x%02x", r, g,b);
回答by Kumar Bibek
Check this Documentation on Color class
检查此颜色类的文档
http://developer.android.com/reference/android/graphics/Color.html#parseColor(java.lang.String)
http://developer.android.com/reference/android/graphics/Color.html#parseColor(java.lang.String)
Color color = Color.parse("#AARRGGBB");
If you have the colors in decimal, you can use.
如果你有十进制的颜色，你可以使用。
String hexValue = Integer.toHexString(255)
