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发表时间：2011-07-31
最后修改：2011-07-31
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public class TweetsActivity extends ListActivity implements OnItemClickListener{
private DataHelper dataHelper;
private UserInfo user;
private MyWeiboSync weibo;
private Handler handler;
private AsyncImageLoader asyncImageLoader;
private TweetsThread thread;
private ListView listView;
private ProgressDialog progressDialog;
private JSONArray array;
private TweetsAdapter adapter;
private String name;
private String currentNick;//当前界面的昵称
private View top_panel;
private Button top_btn_left;
private Button top_btn_right;
private TextView top_title;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tweets);
setUpViews();//设置view
setUpListeners();//设置listenter
asyncImageLoader = new AsyncImageLoader();
dataHelper = new DataHelper(TweetsActivity.this);
weibo = new MyWeiboSync();
List<UserInfo> userList = dataHelper.GetUserList(false);
SharedPreferences preferences = getSharedPreferences("default_user",Activity.MODE_PRIVATE);
String nick = preferences.getString("user_default_nick", "");
if (nick != "") {
user = dataHelper.getUserByName(nick,userList);
}
weibo.setAccessTokenKey(user.getToken());
weibo.setAccessTokenSecrect(user.getTokenSecret());
Intent intent = getIntent();
name = intent.getStringExtra("name");//获取从前面页面传递过来的数据
currentNick = intent.getStringExtra("nick");
top_title.setText(currentNick+"的广播");
progressDialog = new ProgressDialog(TweetsActivity.this);// 生成一个进度条
progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
progressDialog.setTitle("请稍等");
progressDialog.setMessage("正在读取数据中!");
handler = new TweetsHandler();
thread = new TweetsThread();
thread.start();//开启一个线程获取数据
progressDialog.show();
}
private void setUpViews(){
listView = getListView();
top_panel = (View)findViewById(R.id.tweets_top);
top_btn_left = (Button)top_panel.findViewById(R.id.top_btn_left);
top_btn_right = (Button)top_panel.findViewById(R.id.top_btn_right);
top_title = (TextView)top_panel.findViewById(R.id.top_title);
}
private void setUpListeners(){
listView.setOnItemClickListener(this);
}
class TweetsThread extends Thread {
@Override
public void run() {
String jsonStr = weibo.getTweets(weibo.getAccessTokenKey(), weibo.getAccessTokenSecrect(),PageFlag.PageFlag_First, 0, 20, 0,name);
try {
JSONObject dataObj = new JSONObject(jsonStr).getJSONObject("data");
array = dataObj.getJSONArray("info");
} catch (JSONException e) {
e.printStackTrace();
}
//通知handler处理数据
Message msg = handler.obtainMessage();
handler.sendMessage(msg);
}
}
class TweetsHandler extends Handler {
@Override
public void handleMessage(Message msg){
adapter = new TweetsAdapter(TweetsActivity.this, array);
listView.setAdapter(adapter);
progressDialog.dismiss();// 关闭进度条
}
}
class TweetsAdapter extends BaseAdapter {
private Context context;
private LayoutInflater inflater;
private JSONArray array;
public TweetsAdapter(Context context, JSONArray array) {
super();
this.context = context;
this.array = array;
this.inflater = LayoutInflater.from(context);
}
@Override
public int getCount() {
return array.length();
}
@Override
public Object getItem(int position) {
return array.opt(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
asyncImageLoader = new AsyncImageLoader();
TweetsViewHolder viewHolder = new TweetsViewHolder();
JSONObject data = (JSONObject)array.opt(position);
JSONObject source = null;
convertView = inflater.inflate(R.layout.tweets_list_item, null);
try {
source = data.getJSONObject("source");
} catch (JSONException e1) {
e1.printStackTrace();
}
viewHolder.tweets_headicon = (ImageView) convertView.findViewById(R.id.tweets_headicon);
viewHolder.tweets_nick = (TextView) convertView.findViewById(R.id.tweets_nick);
viewHolder.tweets_hasimage = (ImageView) convertView.findViewById(R.id.tweets_hasimage);
viewHolder.tweets_timestamp = (TextView) convertView.findViewById(R.id.tweets_timestamp);
viewHolder.tweets_origtext = (TextView) convertView.findViewById(R.id.tweets_origtext);
viewHolder.tweets_source = (TextView) convertView.findViewById(R.id.tweets_source);
if(data!=null){
try {
convertView.setTag(data.get("id"));
viewHolder.tweets_nick.setText(data.getString("nick"));
viewHolder.tweets_timestamp.setText(TimeUtil.converTime(Long.parseLong(data.getString("timestamp"))));
viewHolder.tweets_origtext.setText(data.getString("origtext"), TextView.BufferType.SPANNABLE);
if(source!=null){
viewHolder.tweets_source.setText(source.getString("origtext"));
viewHolder.tweets_source.setBackgroundResource(R.drawable.source_bg);
}
//异步加载图片
Drawable cachedImage = asyncImageLoader.loadDrawable(data.getString("head")+"/100",viewHolder.tweets_headicon, new ImageCallback(){
@Override
public void imageLoaded(Drawable imageDrawable,ImageView imageView, String imageUrl) {
imageView.setImageDrawable(imageDrawable);
}
});
if (cachedImage == null) {
viewHolder.tweets_headicon.setImageResource(R.drawable.icon);
} else {
viewHolder.tweets_headicon.setImageDrawable(cachedImage);
}
if(data.getJSONArray("image")!=null){
viewHolder.tweets_hasimage.setImageResource(R.drawable.hasimage);
}
} catch (JSONException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
return convertView;
}
}
static class TweetsViewHolder {
private ImageView tweets_headicon;
private TextView tweets_nick;
private TextView tweets_timestamp;
private TextView tweets_origtext;
private TextView tweets_source;
private ImageView tweets_hasimage;
}
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {
JSONObject weiboInfo = (JSONObject)array.opt(position);
Intent intent = new Intent(TweetsActivity.this, WeiboDetailActivity.class);
try {
intent.putExtra("weiboid", weiboInfo.getString("id"));
startActivity(intent);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#ffffffff" xmlns:android="http://schemas.android.com/apk/res/android"> <include android:id="@+id/tweets_top" layout="@layout/top_panel" android:layout_alignParentTop="true"/> <ListView android:id="@id/android:list" android:layout_below="@id/tweets_top" android:layout_width="fill_parent" android:cacheColorHint="#00000000" android:layout_height="wrap_content" android:layout_weight="1" android:divider="@drawable/list_divider"/> <RelativeLayout android:layout_width="fill_parent" android:layout_height="40.0dip" android:layout_alignParentBottom="true"> <Button android:id="@+id/mytweet_back_btn" android:layout_width="40.0dip" android:drawableTop="@drawable/btn_back_selector" android:background="@drawable/bottom_back_bg" android:layout_height="40.0dip" android:layout_alignParentLeft="true"/> <Button android:id="@+id/mytweet_tohome_btn" android:layout_width="40.0dip" android:layout_height="40.0dip" android:drawableTop="@drawable/btn_home_selector" android:background="@drawable/bottom_home_bg" android:layout_alignParentRight="true"/> </RelativeLayout> </RelativeLayout> <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:paddingTop="3.0dip" android:orientation="horizontal" android:background="@drawable/listitem_selector" android:layout_width="fill_parent" android:layout_height="wrap_content"> <RelativeLayout android:layout_width="50.0dip" android:layout_height="50.0dip" android:layout_weight="0.0"> <ImageView android:id="@+id/tweets_headicon" android:layout_width="45.0dip" android:layout_height="45.0dip" android:scaleType="fitCenter" android:layout_centerInParent="true" /> </RelativeLayout> <RelativeLayout android:orientation="vertical" android:layout_width="wrap_content" android:layout_height="wrap_content" android:padding="4.0dip" android:layout_weight="1.0"> <TextView android:id="@+id/tweets_nick" android:textColor="#000000" android:layout_width="wrap_content" android:layout_height="32.0dip" android:textSize="14.0sp" android:layout_alignParentLeft="true"/> <TextView android:id="@+id/tweets_timestamp" android:textColor="#ff000000" android:layout_width="wrap_content" android:layout_height="32.0dip" android:textSize="8.0sp" android:layout_alignParentRight="true"/> <ImageView android:id="@+id/tweets_hasimage" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_toLeftOf="@id/tweets_timestamp"/> <TextView android:id="@+id/tweets_origtext" android:textColor="#081008" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="12.0sp" android:layout_below="@id/tweets_nick"/> <TextView android:layout_marginLeft="6.0dip" android:id="@+id/tweets_source" android:textColor="#101810" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="10.0sp" android:layout_below="@id/tweets_origtext" android:layout_alignParentBottom="true"/> </RelativeLayout> </LinearLayout> 声明：ITeye文章版权属于作者，受法律保护。没有作者书面许可不得转载。
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