Android腾讯微薄客户端开发十:博主广播篇

 
点击广播，显示此博主所发表的所有微博 
 

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>

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