[英]thread exiting error in android
請幫助解決此錯誤....在以下代碼中,get info函數可以正常工作,但給出錯誤消息,表明線程在退出時捕獲了異常。...以下...在此,我顯示一個進度對話框,直到獲取數據,然后在列表視圖中顯示它
public class History extends Activity implements OnItemClickListener
{
/** Called when the activity is first created. */
ListView list;
//LIST OF ARRAY STRINGS WHICH WILL SERVE AS LIST ITEMS
ArrayList<String> listItems;
//DEFINING STRING ADAPTER WHICH WILL HANDLE DATA OF LISTVIEW
ArrayAdapter<String> adapter;
private String resDriver,resPassenger,ID;
private ProgressDialog dialog;
ArrayList<HashMap<String, Object>> listInfo = new ArrayList<HashMap<String, Object>>();
HashMap<String, Object> item;
JSONObject jDriver;
//JSONObject jPassenger;
// Make strings for logging
private final String TAG = this.getClass().getSimpleName();
private final String RESTORE = ", can restore state";
private final String state = "Home Screen taking care of all the tabs";
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
Intent loginIntent = getIntent();
ID = loginIntent.getStringExtra("ID");
listItems = new ArrayList<String>();
Log.i(TAG, "Started view active rides");
setContentView(R.layout.searchresults);
list = (ListView)findViewById(R.id.ListView01);
list.setOnItemClickListener(this);
adapter=new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,listItems);
list.setAdapter(adapter);
getInfo();
}
函數getInfo
用於啟動一個線程,該線程顯示一個對話框並啟動一個http請求以獲取一些數據...
public void getInfo(){
GetInfoThread checkUpdate = new GetInfoThread();
checkUpdate.start();
dialog = ProgressDialog.show(History.this, "Retrieving Info","Please Wait ...", true);
}
private class GetInfoThread extends Thread
{
public void run() {
jDriver = new JSONObject();
try {
jDriver.put("ID", ID);
jDriver.put("task", "GET DATES");
} catch (JSONException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
listItems = new ArrayList<String>();
Log.i(TAG,"Sending data for the driver rides");
resDriver = HTTPPoster.sendJson(jDriver,"http://dsadsada"); // Any Server URL
JSONObject driver;
try {
driver = new JSONObject(resDriver);
Log.i(TAG,"Recieved Driver details");
listItems.add(array[0]);
handler.sendEmptyMessage(0);
}
}
} catch (JSONException e) {
// TODO Auto-generated catch block
listItems.add("No driver rides created");
handler.sendEmptyMessage(0);
}
}
private Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
dialog.dismiss();
Log.i(TAG,"hello 123");
adapter.notifyDataSetChanged();
}
};
}
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