Android 如何使用截取解析JSON?
我想用 我的代码是:Android 如何使用截取解析JSON?,android,json,parsing,android-volley,Android,Json,Parsing,Android Volley,我想用 我的代码是: public class MainActivity extends Activity { // Log tag private static final String TAG = MainActivity.class.getSimpleName(); // Movies json url private static final String url = "http://api.androidhive.info/json/movies.js
public class MainActivity extends Activity {
// Log tag
private static final String TAG = MainActivity.class.getSimpleName();
// Movies json url
private static final String url = "http://api.androidhive.info/json/movies.json";
private ProgressDialog pDialog;
private List<Movie> movieList = new ArrayList<Movie>();
private ListView listView;
private CustomListAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.list);
adapter = new CustomListAdapter(this, movieList);
listView.setAdapter(adapter);
pDialog = new ProgressDialog(this);
// Showing progress dialog before making http request
pDialog.setMessage("Loading...");
pDialog.show();
// changing action bar color
getActionBar().setBackgroundDrawable(
new ColorDrawable(Color.parseColor("#1b1b1b")));
// Creating volley request obj
JsonArrayRequest movieReq = new JsonArrayRequest(url, new Response.Listener <JSONArray> () {
@Override
public void onResponse(JSONArray response) {
Log.d(TAG, response.toString());
hidePDialog();
// Parsing json
for (int i = 0; i < response.length(); i++) {
try {
JSONObject obj = response.getJSONObject(i);
Movie movie = new Movie();
movie.setTitle(obj.getString("title"));
movie.setThumbnailUrl(obj.getString("image"));
movie.setRating(((Number) obj.get("rating")).doubleValue());
movie.setYear(obj.getInt("releaseYear"));
// Genre is json array
JSONArray genreArry = obj.getJSONArray("genre");
ArrayList<String> genre = new ArrayList<String>();
for (int j = 0; j < genreArry.length(); j++) {
genre.add((String) genreArry.get(j));
}
movie.setGenre(genre);
// adding movie to movies array
movieList.add(movie);
} catch(JSONException e) {
e.printStackTrace();
}
}
// notifying list adapter about data changes
// so that it renders the list view with updated data
adapter.notifyDataSetChanged();
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
hidePDialog();
}
});
// Adding request to request queue
AppController.getInstance().addToRequestQueue(movieReq);
}
@Override
public void onDestroy() {
super.onDestroy();
hidePDialog();
}
private void hidePDialog() {
if (pDialog != null) {
pDialog.dismiss();
pDialog = null;
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
//getMenuInflater().inflate(R.menu.main, menu);
int i = 1;
return true;
}
}
公共类MainActivity扩展活动{
//日志标签
私有静态最终字符串标记=MainActivity.class.getSimpleName();
//电影json url
私有静态最终字符串url=”http://api.androidhive.info/json/movies.json";
私人对话;
private List movieList=new ArrayList();
私有列表视图列表视图;
专用自定义列表适配器;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView=(listView)findViewById(R.id.list);
adapter=新的CustomListAdapter(此,movieList);
setAdapter(适配器);
pDialog=新建进度对话框(此对话框);
//在发出http请求之前显示进度对话框
设置消息(“加载…”);
pDialog.show();
//更改操作栏颜色
getActionBar().setBackgroundDrawable(
新的可着色(Color.parseColor(#1b1b1b”);
//创建截击请求对象
JsonArrayRequest movieReq=newjsonarrayrequest(url,new Response.Listener(){
@凌驾
公共void onResponse(JSONArray响应){
Log.d(TAG,response.toString());
hidePDialog();
//解析json
对于(int i=0;i
这段代码来自androidhive,但我不知道如何解析json(我的)
那么,如何解析json呢?试试这个:
String url = "http://api.giphy.com/v1/gifs/search?q=funny+cat&api_key=dc6zaTOxFJmzC";
StringRequest stringRequest = new StringRequest(url, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
try {
JSONObject jsonObject = new JSONObject(response);
JSONArray jsonArray = jsonObject.getJSONArray("data");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jo = jsonArray.getJSONObject(i);
// Do you fancy stuff
// Example: String gifUrl = jo.getString("url");
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
// Anything you want
}
});
RequestQueue requestQueue = Volley.newRequestQueue(getApplicationContext());
requestQueue.add(stringRequest);
stringurl=”http://api.giphy.com/v1/gifs/search?q=funny+cat&api_key=dc6zaTOxFJmzC”;
StringRequest StringRequest=新的StringRequest(url,new Response.Listener()){
@凌驾
公共void onResponse(字符串响应){
试一试{
JSONObject JSONObject=新JSONObject(响应);
JSONArray JSONArray=jsonObject.getJSONArray(“数据”);
for(int i=0;i
可能的重复项您可以使用JsonObjectRequest
而不是StringRequest
;)保存解析行)看看吧,是的,我知道:DIt没有给出任何错误,但它也没有显示json。我的代码是:}}},new Response.ErrorListener(){@Override public void onErrorResponse(VolleyError error){//Anything you want});AppController.getInstance().addToRequestQueue(stringRequest);RequestQueue RequestQueue=Volley.newRequestQueue(getApplicationContext());requestQueue.add(stringRequest);}你能将你的活动代码快速粘贴吗?谢谢