मैं अपने उलटी गिनती ऐप को अपने वर्तमान समय और दिनांक टेक्स्टव्यू को अपडेट करने के अपने कार्य को करने की कोशिश कर रहा हूं और हर सेकेंड को अपने MyOnItemSlectedListener को बंद कर दूं ताकि ऐप केवल गति के बजाय गतिशील रूप से गिना जा सके जब क्रिएट शुरू किया जाता है। यदि एक और अधिक कुशल विधि है तो तेजी से फायरिंग MyOnItemSlectedListener मैं आलोचना की सराहना करता हूं।एंड्रॉइड - ऐप चाहते हैं कि प्रत्येक दूसरे
public class TheCount extends Activity {
TextView description=null;
TextView dates=null;
TextView times=null;
TextView output=null;
TextView cDateDisplay=null;
TextView cTimeDisplay=null;
private int mYear;
private int mMonth;
private int mDay;
private int mHour;
private int mMinute;
private int mSecond;
CountdownHelper helper=null;
String countdownId=null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.thecount);
helper=new CountdownHelper(this);
cTimeDisplay = (TextView)findViewById(R.id.lblCurTime);
cDateDisplay = (TextView)findViewById(R.id.lblCurDate);
final Calendar c = Calendar.getInstance();
mYear = c.get(Calendar.YEAR);
mMonth = c.get(Calendar.MONTH);
mDay = c.get(Calendar.DAY_OF_MONTH);
mHour = c.get(Calendar.HOUR_OF_DAY);
mMinute = c.get(Calendar.MINUTE);
mSecond = c.get(Calendar.SECOND);
Spinner spinner = (Spinner) findViewById(R.id.spinner1);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
this, R.array.countoptions, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
description =(TextView)findViewById(R.id.lblDescriptFed);
dates =(TextView)findViewById(R.id.lblDateFed);
times =(TextView)findViewById(R.id.lblTimeFed);
output =(TextView)findViewById(R.id.lblOutput);
countdownId=getIntent().getStringExtra(MainActivity.ID_EXTRA);
if (countdownId!=null) {
load();
}
spinner.setOnItemSelectedListener(new MyOnItemSelectedListener());
updateDisplay();
}
private void updateDisplay() {
Timer timer = new Timer();
timer.schedule(new TimerTask() {
//@Override
public void run() {
updatedDisplay();
}
},0,1000);//Update text every second
}
public class MyOnItemSelectedListener implements OnItemSelectedListener {
public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
if (parent.getItemAtPosition(pos).toString().equals("Normal")){
Toast.makeText(parent.getContext(), "Countdown format is " +
parent.getItemAtPosition(pos).toString(), Toast.LENGTH_LONG).show();
convertTime();
} else if (parent.getItemAtPosition(pos).toString().equals("by Days")){
Toast.makeText(parent.getContext(), "Countdown format " +
parent.getItemAtPosition(pos).toString(), Toast.LENGTH_LONG).show();
convertDays();
} else if (parent.getItemAtPosition(pos).toString().equals("by Hours")){
Toast.makeText(parent.getContext(), "Countdown format " +
parent.getItemAtPosition(pos).toString(), Toast.LENGTH_LONG).show();
convertHours();
} else if (parent.getItemAtPosition(pos).toString().equals("by Minutes")){
Toast.makeText(parent.getContext(), "Countdown format " +
parent.getItemAtPosition(pos).toString(), Toast.LENGTH_LONG).show();
convertMinutes();
} else if (parent.getItemAtPosition(pos).toString().equals("by Seconds")){
Toast.makeText(parent.getContext(), "Countdown format " +
parent.getItemAtPosition(pos).toString(), Toast.LENGTH_LONG).show();
convertSeconds();
}
}
public void onNothingSelected(AdapterView parent) {
// Do nothing.
}
}
private void convertTime() {
String dtCountdown = dates.getText().toString() + " " + times.getText().toString();
String dtCurrent = cDateDisplay.getText().toString() + " " + cTimeDisplay.getText().toString();
SimpleDateFormat format = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss");
try {
Date date = format.parse(dtCountdown);
Date dateCur = format.parse(dtCurrent);
long diff = dateCur.getTime() - date.getTime();
int timeInSeconds = (int) (diff/1000);
int days, hours, minutes, seconds;
days = timeInSeconds/86400;
timeInSeconds = timeInSeconds - (days * 86400);
hours = timeInSeconds/3600;
timeInSeconds = timeInSeconds - (hours * 3600);
minutes = timeInSeconds/60;
timeInSeconds = timeInSeconds - (minutes * 60);
seconds = timeInSeconds;
System.out.println(date);
if(dateCur.compareTo(date)>0){
output.setText(String.valueOf(days) + " days " + String.valueOf(hours) +
" hours \n" + String.valueOf(minutes) + " minutes " + String.valueOf(seconds) + " seconds ago");
} else {
output.setText(String.valueOf(Math.abs(days)) + " days " + String.valueOf(Math.abs(hours)) +
" hours \n" + String.valueOf(Math.abs(minutes)) + " minutes " + String.valueOf(Math.abs(seconds)) + " seconds till");
}
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void convertDays() {
String dtCountdown = dates.getText().toString() + " " + times.getText().toString();
String dtCurrent = cDateDisplay.getText().toString() + " " + cTimeDisplay.getText().toString();
SimpleDateFormat format = new SimpleDateFormat("dd/MM/yyyy hh:mm");
try {
Date date = format.parse(dtCountdown);
Date dateCur = format.parse(dtCurrent);
long diff = dateCur.getTime() - date.getTime();
int timeInSeconds = (int) (diff/1000);
int days;
days = timeInSeconds/86400;
System.out.println(date);
if(dateCur.compareTo(date)>0){
output.setText(String.valueOf(days) + " days ago");
} else {
output.setText(String.valueOf(Math.abs(days)) + " days till");
}
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void convertHours() {
String dtCountdown = dates.getText().toString() + " " + times.getText().toString();
String dtCurrent = cDateDisplay.getText().toString() + " " + cTimeDisplay.getText().toString();
SimpleDateFormat format = new SimpleDateFormat("dd/MM/yyyy hh:mm");
try {
Date date = format.parse(dtCountdown);
Date dateCur = format.parse(dtCurrent);
long diff = dateCur.getTime() - date.getTime();
int timeInSeconds = (int) (diff/1000);
int hours;
hours = timeInSeconds/3600;
System.out.println(date);
if(dateCur.compareTo(date)>0){
output.setText(String.valueOf(hours) + " hours ago");
} else {
output.setText(String.valueOf(Math.abs(hours)) + " hours till");
}
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void convertMinutes() {
String dtCountdown = dates.getText().toString() + " " + times.getText().toString();
String dtCurrent = cDateDisplay.getText().toString() + " " + cTimeDisplay.getText().toString();
SimpleDateFormat format = new SimpleDateFormat("dd/MM/yyyy hh:mm");
try {
Date date = format.parse(dtCountdown);
Date dateCur = format.parse(dtCurrent);
long diff = dateCur.getTime() - date.getTime();
int timeInSeconds = (int) (diff/1000);
int minutes;
minutes = timeInSeconds/60;
System.out.println(date);
if(dateCur.compareTo(date)>0){
output.setText(String.valueOf(minutes) + " minutes ago");
} else {
output.setText(String.valueOf(Math.abs(minutes)) + " minutes till");
}
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void convertSeconds() {
String dtCountdown = dates.getText().toString() + " " + times.getText().toString();
String dtCurrent = cDateDisplay.getText().toString() + " " + cTimeDisplay.getText().toString();
SimpleDateFormat format = new SimpleDateFormat("dd/MM/yyyy hh:mm");
try {
Date date = format.parse(dtCountdown);
Date dateCur = format.parse(dtCurrent);
long diff = dateCur.getTime() - date.getTime();
int timeInSeconds = (int) (diff/1000);
int seconds;
seconds = timeInSeconds;
System.out.println(date);
if(dateCur.compareTo(date)>0){
output.setText(String.valueOf(seconds) + " seconds ago");
} else {
output.setText(String.valueOf(Math.abs(seconds)) + " seconds till");
}
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void updatedDisplay() {
TextView cDateDisplay=null;
TextView cTimeDisplay=null;
cTimeDisplay = (TextView)findViewById(R.id.lblCurTime);
cDateDisplay = (TextView)findViewById(R.id.lblCurDate);
cDateDisplay.setText(
new StringBuilder()
// Month is 0 based so add 1
.append(mDay).append("/")
.append(mMonth + 1).append("/")
.append(mYear).append(" "));
cTimeDisplay.setText(
new StringBuilder()
.append(pad(mHour)).append(":")
.append(pad(mMinute)).append(":").append(pad(mSecond)));
}
private static String pad(int c) {
if (c >= 10)
return String.valueOf(c);
else
return "0" + String.valueOf(c);
}
private void load() {
Cursor c=helper.getById(countdownId);
c.moveToFirst();
description.setText(helper.getDescription(c));
dates.setText(helper.getDate(c));
times.setText(helper.getTime(c) + ":00");
c.close();
}
@Override
public void onDestroy() {
super.onDestroy();
helper.close();
}
}
@NamLe: यह अनुप्रयोग क्रैश हो और जब OnCreate() कहा जाता है इस LogCat में सामने आती है।
02-23 13:19:43.540: I/System.out(11667): Sun Jun 24 00:00:00 MDT 2012 02-23 13:19:44.500: W/dalvikvm(11667): threadid=11: thread exiting with uncaught exception (group=0x40a351f8) 02-23 13:19:44.510: E/AndroidRuntime(11667): FATAL EXCEPTION: Timer-0 02-23 13:19:44.510: E/AndroidRuntime(11667): android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views. 02-23 13:19:44.510: E/AndroidRuntime(11667): at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:4039) 02-23 13:19:44.510: E/AndroidRuntime(11667): at android.view.ViewRootImpl.requestLayout(ViewRootImpl.java:709) 02-23 13:19:44.510: E/AndroidRuntime(11667): at android.view.View.requestLayout(View.java:12675) 02-23 13:19:44.510: E/AndroidRuntime(11667): at android.view.View.requestLayout(View.java:12675) 02-23 13:19:44.510: E/AndroidRuntime(11667): at android.view.View.requestLayout(View.java:12675) 02-23 13:19:44.510: E/AndroidRuntime(11667): at android.view.View.requestLayout(View.java:12675) 02-23 13:19:44.510: E/AndroidRuntime(11667): at android.view.View.requestLayout(View.java:12675) 02-23 13:19:44.510: E/AndroidRuntime(11667): at android.widget.TextView.checkForRelayout(TextView.java:6773) 02-23 13:19:44.510: E/AndroidRuntime(11667): at android.widget.TextView.setText(TextView.java:3306) 02-23 13:19:44.510: E/AndroidRuntime(11667): at android.widget.TextView.setText(TextView.java:3162) 02-23 13:19:44.510: E/AndroidRuntime(11667): at android.widget.TextView.setText(TextView.java:3137) 02-23 13:19:44.510: E/AndroidRuntime(11667): at com.pixelcrunch.crunchtime.TheCount$1.run(TheCount.java:87) 02-23 13:19:44.510: E/AndroidRuntime(11667): at java.util.Timer$TimerImpl.run(Timer.java:284)
धन्यवाद! मैंने runOnUiThread() कोड जोड़ा और इसे काम करने के लिए मिला। मुझे यकीन नहीं है कि यह छोटा कार्य कितना गहन होगा और यदि यह खराब कोडिंग है लेकिन उद्देश्य के लिए यह काम करता है। –
ओह। आपको पृष्ठभूमि धागे और यूआई थ्रेड पर ध्यान देना चाहिए। इस मामले में, आपको अद्यतन दिनांक समय टेक्स्ट के लिए यूआई थ्रेड की आवश्यकता है। और टाइमर ऑब्जेक्ट सबसे अच्छा विकल्प है। यदि आप डाउनलोड थ्रेड के प्रतिशत को अपडेट करना चाहते हैं, तो आपको हैंडलर ऑब्जेक्ट का उपयोग करना होगा। Google के कई उदाहरण हैं: डी – NamLe