Android 如何从json响应中获取图像？

您好，我正在尝试在我的应用程序活动中使用JSON从响应中获取数据。我获得了除图像之外的所有数据，它没有显示在我的输出中。我不知道使用简单的

setTag

和

setText

方法有什么问题，有人能帮忙吗

public class ProfilePage extends Activity{

private ProgressDialog pDialog;

//private static final String TAG_MATCH_ID="match_detail_id";

private static final String USER_NAME="name";
private static final String USER_AGE="age";
private static final String USER_LOCATION="location";
private static final String USER_MOTHER_TONGE="mother_tounge";
private static final String USER_OCCU="occupation";
private static final String USER_INCOM="income";
private static final String USER_HEIGHT="height";
private static final String USER_MARRAGE="marital_status";
private static final String USER_RELIGION="religion";
private static final String USER_GOTRA="gotra";
private static final String USER_MANGLIK="manglik";
private static final String USER_RASHI="rashi";
private static final String USER_EDUCATION="education";
private static final String USER_EAT="eating";
private static final String USER_DRINK="drink";
private static final String USER_SMOKE="smoke";
private static final String USER_ABOUT="about_me";
private static final String USER_PIC="profile_pic";

private static String USER_URL="http://abcfg.com/webservice/matchingdetails?version=apps&match_detail_id=636";

String user_match_id;

private ImageView cover;
private ImageView yes;
private ImageView no;
private ImageView sendmsg;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.profile_page);

    StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
    StrictMode.setThreadPolicy(policy);
     ServiceHandler sh = new ServiceHandler();

        // Making a request to url and getting response
        String jsonStr = sh.makeServiceCall(USER_URL, ServiceHandler.GET);

        Log.d("Response: ", "> " + jsonStr);

    try {
        JSONObject jsonObj = new JSONObject(jsonStr);

            String user_name = jsonObj.getString(USER_NAME);
            String user_age = jsonObj.getString(USER_AGE);
            String user_location = jsonObj.getString(USER_LOCATION);
            String user_mothertong = jsonObj.getString(USER_MOTHER_TONGE);
            String user_occupation = jsonObj.getString(USER_OCCU);
            String user_income = jsonObj.getString(USER_INCOM);
            String user_height = jsonObj.getString(USER_HEIGHT);
            String user_marg = jsonObj.getString(USER_MARRAGE);
            String user_religion = jsonObj.getString(USER_RELIGION);
            String user_gotra = jsonObj.getString(USER_GOTRA);
            String user_manglik = jsonObj.getString(USER_MANGLIK);
            String user_rashi = jsonObj.getString(USER_RASHI);
            String user_education = jsonObj.getString(USER_EDUCATION);
            String user_eat = jsonObj.getString(USER_EAT);
            String user_drink = jsonObj.getString(USER_DRINK);
            String user_smoke = jsonObj.getString(USER_SMOKE);
            String user_about = jsonObj.getString(USER_ABOUT);
           String user_pro = jsonObj.getString(USER_PIC);

            final TextView uname = (TextView)findViewById(R.id.namedetail);
           final TextView fdetail = (TextView)findViewById(R.id.firstdetail);
            final TextView sdetail = (TextView)findViewById(R.id.seconddetail);
            final TextView tdetail = (TextView)findViewById(R.id.thirddetail);
            final TextView ocdetail=(TextView)findViewById(R.id.txtoccupationdetail);
            final TextView incomedetail = (TextView)findViewById(R.id.incomedetaile);
            final TextView uheight = (TextView)findViewById(R.id.txtheightprofile);
            final TextView umrg = (TextView)findViewById(R.id.txtmrgprofile);
            final TextView ureligion = (TextView)findViewById(R.id.prohindu);
            final TextView ugotra = (TextView)findViewById(R.id.gothraa);
            final TextView umanglik = (TextView)findViewById(R.id.usermanglik);
            final TextView urashi = (TextView)findViewById(R.id.rashi);
            final TextView udegree = (TextView)findViewById(R.id.userdegree);
            final TextView ueat = (TextView)findViewById(R.id.txteatprofile);
            final TextView udrink = (TextView)findViewById(R.id.txtdrinkprofile);
            final TextView usmoke = (TextView)findViewById(R.id.txtsmokeprofile);
            final TextView uabout = (TextView)findViewById(R.id.txtabouther);
           final ImageView ucover = (ImageView)findViewById(R.id.coverimage);

            uname.setText(user_name);
            fdetail.setText(user_age+" years");
            sdetail.setText(user_location);
            tdetail.setText(user_mothertong);
            ocdetail.setText(user_occupation);
            incomedetail.setText(user_income);
            uheight.setText(user_height);
            umrg.setText(user_marg);
            ureligion.setText(user_religion);
            ugotra.setText(user_gotra);
            umanglik.setText(user_manglik);
            urashi.setText(user_rashi);
            udegree.setText(user_education);
            ueat.setText(user_eat);
            udrink.setText(user_drink);
            usmoke.setText(user_smoke);
            uabout.setText(user_about);
            ucover.setTag(user_pro);


    } catch (JSONException e) {
        e.printStackTrace();
    }

使用离子库。。。。从网络上获取图像非常简单。。。。像这样,

试试这个

---

我认为你们是从url下载图片，所以我建议你们使用Android查询，若你们使用它，你们将永远不会得到这个错误

您可以从这里下载jar文件：下载jar文件并将jar设置为构建路径

 AQuery androidAQuery=new AQuery(this);

以直接从url加载图像为例：

androidAQuery.id(ucover).image(user_pro, true, true);

androidAQuery.ajax(YOUR IMAGE URL,Bitmap.class,0,new AjaxCallback<Bitmap>(){
                        @Override
                        public void callback(String url, Bitmap object, AjaxStatus status) {
                            super.callback(url, object, status);

                            //You will get Bitmap from object.
                        }

                    });

作为从url获取位图的示例：

androidAQuery.id(ucover).image(user_pro, true, true);

androidAQuery.ajax(YOUR IMAGE URL,Bitmap.class,0,new AjaxCallback<Bitmap>(){
                        @Override
                        public void callback(String url, Bitmap object, AjaxStatus status) {
                            super.callback(url, object, status);

                            //You will get Bitmap from object.
                        }

                    });

AndroidQuery.ajax（您的图像URL、位图.class、0、新的AjaxCallback（）{
@凌驾
公共无效回调（字符串url、位图对象、AjaxStatus状态）{
super.callback（url、对象、状态）；
//您将从对象中获取位图。
}
});

---

这是非常快速和准确的，使用它你可以找到更多的功能，如动画加载时；如果需要，获取位图；等等。

以下是可行的解决方案： 首先使用以下命令从JSON获取图像的URL-

String imgURL = json.getString(JSON_TAG_OF_IMAGE);  //Getting the URL

现在，使用以下代码从URL获取图像（用try/catch包围）

以下是getBitmapFromurl：--

就这样。您可以将位图（照片变量）设置为imageview。

---

希望这有帮助：）：）

在显示图像的地方，我看不到任何代码。最后一个字段是在我的codeucover.setTag（user_pro）中看到的图像；这是显示图像的代码吗？是的，我是这段代码，但图像不显示Json返回的图像格式是什么？它是一个图像的路径还是一些图像字节数据？您必须首先添加库ION和GSON，然后简单地将此代码添加到MainActivity.javaso中，我应该在其中添加jar文件download@Eddie列表中的第一个，确定，但它显示AjaxStatus错误并请求创建类AjaxStatus无法解析为type@Eddie不要使用该代码，只需使用这一行：androidquery.id（ucover.image）（user\u pro，true，true）；那个让我们排除这个问题

private static Bitmap getBitmapFromUrl(String hos_imgURL)
            throws IOException {

        URL IMGURL = new URL(hos_imgURL);
        Log.d(_TAG, "Image Url:" + IMGURL.toString());
        HttpURLConnection conn = (HttpURLConnection) IMGURL.openConnection();
        conn.setDoInput(true);
        conn.connect();

        conn.setConnectTimeout(30000);
        conn.setReadTimeout(30000);

        InputStream is = conn.getInputStream();
        bmp = BitmapFactory.decodeStream(is);

        return bmp;
    }