如何显示在android的列表视图的鸣叫？ [英] how to show tweets in list view in android?
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问题描述
我要显示在android的application.i列表视图鸣叫已经使用以下code，但鸣叫没有显示..可能有人请告诉如何显示这些后，每重新加载列表视图5最新的鸣叫15分钟？我已经尝试了许多codeS，但在任何结果并没有达到！
公共类TweetsListActivity延伸活动{ TextView的电视;
LV的ListView;
叽叽喳喳叽叽喳喳;
TextView的用户名;
TweetsListAdapter适配器;
ArrayList的＆LT;＆分享Tweet GT; tweetsDataList;
串tweetsData; 静态ConfigurationBuilder CB;
私人静态共享preferences mShared preferences;
AlertDialogManager警报=新AlertDialogManager（）;
私有静态最后弦乐CONSUMER_KEY =;
私有静态最后弦乐CONSUMER_SECRET =; @覆盖
保护无效的onCreate（捆绑savedInstanceState）{
的setContentView（R.layout.tweets_list）;
super.onCreate（savedInstanceState）;
如果（android.os.Build.VERSION.SDK_INT＆GT; 9）{
。StrictMode.ThreadPolicy政策=新StrictMode.ThreadPolicy.Builder（）permitAll（）建（）;
StrictMode.setThreadPolicy（政策）;
}
电视=（的TextView）findViewById（R.id.textView1）;
用户名=（的TextView）findViewById（R.id.username）;
LV =（ListView控件）findViewById（R.id.listView）;
tweetsDataList =新的ArrayList＆LT;＆分享Tweet GT;（）;
字符串responseBody = NULL;
尝试{
ConfigurationBuilder建设者=新ConfigurationBuilder（）; builder.setOAuthConsumerKey（CONSUMER_KEY）; builder.setOAuthConsumerSecret（CONSUMER_SECRET）;
URI网站=新的URI（https://api.twitter.com/1/statuses/user_timeline/.json）;
HttpClient的HC =新DefaultHttpClient（）;
HTTPGET GET =新HTTPGET（）;
get.setURI（网站）;
HTT presponse RP = hc.execute（获取）;
HttpEntity实体= rp.getEntity（）;
responseBody = EntityUtils.toString（实体）;如果（（（org.apache.http.Htt presponse）RP）.getStatusLine（）的getStatus code（）== HttpStatus.SC_OK）{
返回的字符串= NULL;
JSONObject的JSON =新的JSONObject（返回）;
JSONArray JA = NULL;
JA = json.getJSONArray（结果）;
为（中间体I1 = 0; I1＆下; ja.length（5）; I1 ++）{
JSONObject的tweet_obj = ja.getJSONObject（I1）;
鸣叫tweetsData =新的tweet（）;
字符串username = tweet_obj.getString（FROM_USER）;
字符串消息= tweet_obj.getString（文字）; tweetsDataList.add（tweetsData）;
}
}
}
赶上（例外五）{
Log.e（TwitterFeedActivity，错误加载JSON，E）;
}
适配器=新TweetsListAdapter（TweetsListActivity.this，tweetsDataList）;
lv.setAdapter（适配器）;
mShared preferences = getApplicationContext（）getShared preferences（我的preF，0）;
}
}
}
但没有列表显示..无论是logcat的显示任何错误..
我已经使用适配器类。这里是链接http://pastebin.com/XBErcu9c
解决方案
鉴于ü没有设置textview.So，不妨此帮助您
@覆盖
公共查看getView（INT位置，查看convertView，父母的ViewGroup）{
查看查看= convertView;
持有人持有人=新的持有人（）;如果（查看== NULL）{
LayoutInflater VI =（LayoutInflater）this.getContext（）getSystemService（Context.LAYOUT_INFLATER_SERVICE）。
鉴于= vi.inflate（R.layout.tweet_item，NULL）;
}唧啾= tweets.get（位置）;
如果（鸣叫！= NULL）{
holder.username =（TextView中）view.findViewById（R.id.listItem）;
holder.message =（TextView中）view.findViewById（R.id.message）;如果（用户名！= NULL）{
username.setText（tweet.username）;
}如果（消息！= NULL）{
message.setText（tweet.message）;
}}
view.setTag（保持器）;
返回视图。
}
}类持有人{
TextView的用户名;
TextView的消息;
}
i want to show tweets in a list view in android application.i have used following code but the tweets are not showing.. could anybody please tell how to show 5 latest tweets in list view which are reloaded after every 15 minutes? i have tried many codes but did not reached at any result!
public class TweetsListActivity extends Activity {
TextView tv;
ListView lv;
Twitter twitter;
TextView username;
TweetsListAdapter adapter;
ArrayList<Tweet> tweetsDataList;
String tweetsData;
static ConfigurationBuilder cb;
private static SharedPreferences mSharedPreferences;
AlertDialogManager alert = new AlertDialogManager();
private static final String CONSUMER_KEY = "";
private static final String CONSUMER_SECRET = "";
@Override
protected void onCreate(Bundle savedInstanceState) {
setContentView(R.layout.tweets_list);
super.onCreate(savedInstanceState);
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}
tv = (TextView) findViewById(R.id.textView1);
username =(TextView)findViewById(R.id.username);
lv = (ListView) findViewById(R.id.listView);
tweetsDataList = new ArrayList<Tweet>();
String responseBody = null;
try {
ConfigurationBuilder builder = new ConfigurationBuilder(); builder.setOAuthConsumerKey(CONSUMER_KEY); builder.setOAuthConsumerSecret(CONSUMER_SECRET);
URI website = new URI("https://api.twitter.com/1/statuses/user_timeline/.json");
HttpClient hc =new DefaultHttpClient();
HttpGet get = new HttpGet();
get.setURI(website);
HttpResponse rp = hc.execute(get);
HttpEntity entity = rp.getEntity();
responseBody = EntityUtils.toString(entity);
if(((org.apache.http.HttpResponse)rp).getStatusLine().getStatusCode() == HttpStatus.SC_OK){
String returned = null;
JSONObject json = new JSONObject(returned);
JSONArray ja = null;
ja = json.getJSONArray("results");
for (int i1 = 0; i1 < ja.length(5); i1++) {
JSONObject tweet_obj = ja.getJSONObject(i1);
Tweet tweetsData = new Tweet();
String username = tweet_obj.getString("from_user");
String message = tweet_obj.getString("text"); tweetsDataList.add(tweetsData);
}
}
}
catch (Exception e) {
Log.e("TwitterFeedActivity", "Error loading JSON", e);
}
adapter = new TweetsListAdapter(TweetsListActivity.this, tweetsDataList);
lv.setAdapter(adapter);
mSharedPreferences=getApplicationContext().getSharedPreferences("MyPref",0);
}
}
}
but no list is showing .. neither the logcat shows any error..
i have used adapter classes. here is the link http://pastebin.com/XBErcu9c
解决方案
In view u haven't set the textview.So, Might this help you
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView;
Holder holder=new Holder();
if (view == null) {
LayoutInflater vi = (LayoutInflater)this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = vi.inflate(R.layout.tweet_item, null);
}
Tweet tweet = tweets.get(position);
if (tweet != null) {
holder.username = (TextView) view.findViewById(R.id.listItem);
holder.message = (TextView) view.findViewById(R.id.message);
if (username != null) {
username.setText(tweet.username);
}
if(message != null) {
message.setText(tweet.message);
}
}
view.setTag(holder);
return view;
}
}
class Holder{
TextView username;
TextView message;
}
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