我之前搜索了很多，但我没有达到我的目标
我的问题是
我有一个带有计时器的列表视图，可以在每行中倒计时 当我点击一行时，计数器立即倒计时 ，但是当我点击另一行时，前一个计数器停止，当前计数器倒计时，但它将秒计数为两秒。
所以我的问题是： -
我想让计数器运行与点击的行相关。不停止任何先前运行的计数器。
抱歉我的英语不好，并提前致谢。import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class RecipeStepsActivity extends Activity {
ListView list;
int minutes;
int seconds;
int hours;
int time;
TextView fullTime;
TextView step;
String fullTimeString;
String[] fullTimeArray;
MediaPlayer myTen ;
Activity context;
@SuppressLint("ShowToast")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_recipe_steps);
context=this;
list = (ListView) findViewById(R.id.listId);
list.setAdapter(new RecipeStepsListAdapter(RecipeStepsActivity.this,R.layout.activity_recipe_steps_list_adapter,XmlHandler.HashMapOfSteps.get(Main.position),XmlHandler.HashMapOfTime.get(Main.position)));
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v, int id,
long arg3) {
// TODO Auto-generated method stub
final String item = (String) parent.getItemAtPosition(id);
fullTimeArray = new String[3];
fullTimeArray = item.split(":");
Toast.makeText(RecipeStepsActivity.this,
"h "+fullTimeArray[0]+":m "+fullTimeArray[1]+":s "+fullTimeArray[2], Toast.LENGTH_SHORT).show();
step = (TextView)findViewById(R.id.step);
fullTime = (TextView)findViewById(id);
hours = Integer.parseInt(fullTimeArray[0]);
minutes = Integer.parseInt(fullTimeArray[1]);
seconds = Integer.parseInt(fullTimeArray[2]);
time = (hours*60*60)+(minutes*60)+seconds;
createCounterDownTimer();
}
});
}
public void createCounterDownTimer(){
runOnUiThread( new Runnable() {
public void run() {
// TODO Auto-generated method stub
new CountDownTimer(time * 1000, 1000) {
@SuppressLint("NewApi")
@Override
public void onTick(long millisUntilFinished) {
if(hours>0 && minutes == 0 && seconds == 0){
hours -- ;
fullTime.setText(hours+":"+minutes+":"+seconds);
fullTime.animate();
minutes = 60;
}
if( minutes>0 && seconds == 0){
minutes--;
fullTime.setText(hours+":"+minutes+":"+seconds);
fullTime.animate();
seconds = 60;
//seconds --;
}
if(seconds>0 ){
seconds--;
fullTime.setText(hours+":"+minutes+":"+seconds);
fullTime.animate();
}
}
@Override
public void onFinish() {
// TODO Auto-generated method stub
myTen = MediaPlayer.create(RecipeStepsActivity.this, R.raw.soundd);
myTen.start();
//this is a run for the ui ajax containing alertdialog
runOnUiThread( new Runnable() {
@SuppressWarnings("deprecation")
public void run() {
fullTime.setText("time up!");
//showNotification();
AlertDialog alertDialog = new AlertDialog.Builder(RecipeStepsActivity.this).create();
alertDialog.setTitle("time up");
alertDialog.setMessage(step.getText().toString()+" is finished");
alertDialog.setButton("ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
myTen.stop();
dialog.cancel();
}
});
alertDialog.show();
}
});
}
}.start();
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.recipe_steps, menu);
return true;
}
}
答案 0 :(得分：1)
我已经解决了在2秒内计算秒数的问题，以及停止前一个计数器的问题， 通过创建一个名为“createCounterDownTimer”的方法，我将listview中使用的所有textview放在此方法中，并使用当前单击行的“id”，并使用“CountDownTimer（以毫秒为单位的时间，间隔）”...
这是活动的代码
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class RecipeStepsActivity extends Activity {
ListView list;
int minutes;
int seconds;
int hours;
TextView fullTime;
TextView step;
String fullTimeString;
String[] fullTimeArray;
MediaPlayer myTen;
Activity context;
long init = 0, now;
AdapterView<?> parent1;
@SuppressLint("ShowToast")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_recipe_steps);
context = this;
list = (ListView) findViewById(R.id.listId);
list.setAdapter(new RecipeStepsListAdapter(RecipeStepsActivity.this,
R.layout.activity_recipe_steps_list_adapter,
XmlHandler.HashMapOfSteps.get(Main.position),
XmlHandler.HashMapOfTime.get(Main.position)));
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v, int id,long arg3) {
parent1=parent;
final String item = (String) parent1.getItemAtPosition(id);
fullTimeArray = new String[3];
fullTimeArray = item.split(":");
Toast.makeText(RecipeStepsActivity.this,
"h " + fullTimeArray[0] + ":m " + fullTimeArray[1]
+ ":s " + fullTimeArray[2], Toast.LENGTH_SHORT).show();
hours = Integer.parseInt(fullTimeArray[0]);
minutes = Integer.parseInt(fullTimeArray[1]);
seconds = Integer.parseInt(fullTimeArray[2]);
Long times = ((hours * 60L * 60L) + (minutes * 60L) + seconds) * 1000;
createCounterDownTimer(times,id);
}
});
}
public void createCounterDownTimer(final Long times,final int id) {
runOnUiThread(new Runnable() {
public void run() {
new CountDownTimer(times, 1000) {
@SuppressLint("NewApi")
@Override
public void onTick(long ms) {
step = (TextView) findViewById(R.id.step);
fullTime = (TextView) findViewById(id);
int seconds = (int) (ms / 1000) % 60;
int minutes = (int) ((ms / (1000 * 60)) % 60);
int hours = (int) ((ms / (1000 * 60 * 60)) % 24);
System.out.println(hours + ": " + minutes + ": "
+ seconds);
fullTime.setText(hours + ": " + minutes + ": "
+ seconds);
}
@Override
public void onFinish() {
// TODO Auto-generated method stub
myTen = MediaPlayer.create(RecipeStepsActivity.this,
R.raw.soundd);
myTen.start();
// this is a run for the ui ajax containing alertdialog
fullTime.setText("time up!");
// showNotification();
AlertDialog alertDialog = new AlertDialog.Builder(
RecipeStepsActivity.this).create();
alertDialog.setTitle("time up");
alertDialog.setMessage(step.getText()
.toString() + " is finished");
alertDialog.setButton("ok",
new DialogInterface.OnClickListener() {
@Override
public void onClick(
DialogInterface dialog,
int which) {
// TODO Auto-generated method
// stub
myTen.stop();
dialog.cancel();
}
});
alertDialog.show();
}
}.start();
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.recipe_steps, menu);
return true;
}
}
答案 1 :(得分：0)
使用AsyncTask概念。通过使用它，您可以运行多个线程，而不会打扰UI线程。只是谷歌它你会得到很多关于AsyncTask概念的教程。