我写了一个从服务器查询数据的视图，我希望用户可以使用按钮查询，如果他们没有任何动作，程序会每隔3分钟自动触发按钮事件？有人有个好主意吗？非常感谢。
public void jumpToLayout11（）{
StrictMode
.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
.detectDiskReads()
.detectDiskWrites()
.detectNetwork() // or .detectAll() for all detectable problems
.penaltyLog()
.build());
StrictMode
.setVmPolicy(new StrictMode.VmPolicy.Builder()
.detectLeakedSqlLiteObjects()
.detectLeakedClosableObjects()
.penaltyLog()
.penaltyDeath()
.build());
setContentView(R.layout.layout11);
// 定義各 ListView
final ListView lvBKNO;
final ListView lvFITX;
final ListView lvFIMTX;
final ListView lvOPTION;
final ListView lvTOTAL;
final TextView tvTime;
// 各控件 findViewID
lvBKNO = (ListView)findViewById(R.id.lvBKNO);
lvFITX = (ListView)findViewById(R.id.lvFITX);
lvFIMTX = (ListView)findViewById(R.id.lvFIMTX);
lvOPTION = (ListView)findViewById(R.id.lvOPTION);
lvTOTAL = (ListView)findViewById(R.id.lvTOTAL);
tvTime = (TextView)findViewById(R.id.tvTime);
Button btnLayout11Inq= (Button) findViewById(R.id.btnLayout11Inq);
Button btnLayout11Back = (Button) findViewById(R.id.btnLayout11Back);
btnLayout11Back.setOnClickListener(new OnClickListener()
{
public void onClick(View v)
{
BackToMain();
}
});
btnLayout11Inq.setOnClickListener(new Button.OnClickListener()
{
public void onClick(View v){
URL url;
try {
url = new URL("http://172.0.0.1/mobiwork/mobiftsm.txt");
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
String data;
String bkno, fitx, fimtx, option, total;
String datatime;
ArrayList<String> arrBKNO = new ArrayList<String>();
ArrayList<String> arrFITX = new ArrayList<String>();
ArrayList<String> arrFIMTX = new ArrayList<String>();
ArrayList<String> arrOPTION = new ArrayList<String>();
ArrayList<String> arrTOTAL = new ArrayList<String>();
arrBKNO.add("據點");
arrFITX.add("大台指");
arrFIMTX.add("小台指");
arrOPTION.add("選擇權");
arrTOTAL.add("合 計");
try {
while ((data = in.readLine()) != null) {
// 將讀取的 String Line substring 將各欄位填入 StringArray,再進 ListView Adapter:
bkno = data.substring(0,4);
fitx = data.substring(5, 18);
fimtx = data.substring(19,32);
option = data.substring(33,46);
total = data.substring(47,60);
if (bkno.equals("1090") == true)
{
arrBKNO.add("總公司");
}
else
if (bkno.equals("1091") == true)
{
arrBKNO.add("台中");
}
if (bkno.equals("1093") == true)
{
arrBKNO.add("埔里");
}
else
if (bkno.equals("1095") == true)
{
arrBKNO.add("桃園");
}
if (bkno.equals("1096") == true)
{
arrBKNO.add("板橋");
}
else
if (bkno.equals("1097") == true)
{
arrBKNO.add("高雄");
}
else
if (bkno.equals("109A") == true)
{
arrBKNO.add("城中");
}
else
if (bkno.equals("109K") == true)
{
arrBKNO.add("忠孝");
}
else
if (bkno.equals("TOTA") == true)
{
arrBKNO.add("總計");
}
arrFITX.add(fitx);
arrFIMTX.add(fimtx);
arrOPTION.add(option);
arrTOTAL.add(total);
} // while 迴圈結束
in.close();
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
// 設定分公司 lvBKNO ListView 的 ListAdapter
final ArrayAdapter listAdapterBKNO;
listAdapterBKNO = new ArrayAdapter(MainActivity.this,R.layout.orangetextview,arrBKNO);
lvBKNO.setAdapter(listAdapterBKNO);
lvBKNO.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView parent, View view,int position,long id){
Toast.makeText(getApplicationContext()," ",Toast.LENGTH_SHORT ).show();
lvBKNO.setVisibility(view.VISIBLE);
}
});
// 設定大台指 lvFITX ListView 的 ListAdapter
final ArrayAdapter listAdapterFITX;
listAdapterFITX = new ArrayAdapter(MainActivity.this,R.layout.mytextview,arrFITX);
lvFITX.setAdapter(listAdapterFITX);
lvFITX.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView parent, View view,int position,long id){
Toast.makeText(getApplicationContext()," ",Toast.LENGTH_SHORT ).show();
lvFITX.setVisibility(view.VISIBLE);
}
});
// 設定小台指 lvFIMTX ListView 的 ListAdapter
final ArrayAdapter listAdapterFIMTX;
listAdapterFIMTX = new ArrayAdapter(MainActivity.this,R.layout.mytextview,arrFIMTX);
lvFIMTX.setAdapter(listAdapterFIMTX);
lvFIMTX.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView parent, View view,int position,long id){
Toast.makeText(getApplicationContext()," ",Toast.LENGTH_SHORT ).show();
lvFIMTX.setVisibility(view.VISIBLE);
}
});
// 設定選擇權 lvOPTION ListView 的 ListAdapter
final ArrayAdapter listAdapterOPTION;
listAdapterOPTION = new ArrayAdapter(MainActivity.this,R.layout.mytextview,arrOPTION);
lvOPTION.setAdapter(listAdapterOPTION);
lvOPTION.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView parent, View view,int position,long id){
Toast.makeText(getApplicationContext()," ",Toast.LENGTH_SHORT ).show();
lvOPTION.setVisibility(view.VISIBLE);
}
});
// 設定合計 lvTOTAL ListView 的 ListAdapter
final ArrayAdapter listAdapterTOTAL;
listAdapterTOTAL = new ArrayAdapter(MainActivity.this,R.layout.mytextview,arrTOTAL);
lvTOTAL.setAdapter(listAdapterTOTAL);
lvTOTAL.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView parent, View view,int position,long id){
Toast.makeText(getApplicationContext()," ",Toast.LENGTH_SHORT ).show();
lvTOTAL.setVisibility(view.VISIBLE);
}
});
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}); // 查詢結束
}
答案 0 :(得分：1)
让一个类称为MyTimeTask。
private class MyTimeTask extends TimerTask {
@Override
public void run() {
runOnUiThread(new Runnable() {
@Override
public void run() {
//code you had in your onclick()
}
});
}
}
然后在你的活动中把它放在oncreate（）
中Timer myTimer = new Timer();
MyTimerTask myTimeTask= new MyTimeTask();
然后
//to Stop uncomment and put where you call your quit you don't have to
//myTimer.cancel();
//to start
myTimer.scheduleAtFixedRate(myTimerTask, 0, 180000); //(timertask,delay,period)
句点以毫秒为单位。
答案 1 :(得分：0)
我已经创建了一些制作处理程序线程的步骤
1.First convert minute to millisecond
long t = (min * 60L) ;
long result = TimeUnit.SECONDS.toMillis(t);
2.Create one thread we called acutaly Handler
Handler tick_Handler = new Handler();
MyThread tick_thread = new MyThread();
private class MyThread implements Runnable {
public void run() {
showTime("Data update or ui update");
tick_Handler.postDelayed(tick_thread, result);
}
}
2.Start thread in onCreate method
/ **首次创建活动时调用。 * /
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
tick_Handler.post(tick_thread);
}