Android - Möchten Sie die app, um Aufgaben in jeder Sekunde
Ich versuche, mein countdown-app, um seine Funktion auszuführen aktualisieren meine aktuelle Zeit und das Datum TextView und Feuer aus seinen MyOnItemSelectedListener jede Sekunde, so dass die app nach unten zählt dynamisch statt nur beim onCreate eingeleitet wird. Wenn es eine effektivere Methode dann schnell feuern aus MyOnItemSelectedListener würde ich mich über die Kritik.
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: Diese Abstürze der app und bringt diese bis in die LogCat, wenn onCreate() aufgerufen wird.
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)
InformationsquelleAutor Pixel Crunch | 2012-02-23
Du musst angemeldet sein, um einen Kommentar abzugeben.
Versuchen
UpdateDisplay- Funktion, wie unten:Schließlich müssen Sie anrufen
updateDisplay()imonCreate()Funktion.Ich hoffe, dieser code würde helfen beenden Sie, was Sie wollen !
Oh. Achten sollte man auf hintergrund-thread und UI-thread. In diesem Fall, u müssen UI-thread für das update-Datum, Zeit, text. Und das Timer-Objekt ist die beste Wahl. Wenn u wollen, zu aktualisieren Prozent der download-thread, u müssen, um zu verwenden Handler-Objekt. Google haben viele Beispiel 😀
InformationsquelleAutor NamLe
Laufen auf dem main-thread:
InformationsquelleAutor Alecs
Können Sie entweder
sendMessageAtTime()oderpostAtTime()senden Sie eine Nachricht ein zweites in die Zukunft, und behandeln Sie dann.Für weitere Informationen.
InformationsquelleAutor dragonx
Vielleicht können Sie auch Timer/TimerTask Feuer eine operation wiederholt: https://developer.android.com/reference/java/util/Timer.html
InformationsquelleAutor Kurosawa Hiroyuki