嗨,我正在尝试每秒更新 3 个文本视图。我写了这段代码。线程正常启动,但文本视图它们不会更新。我在文本视图的文本参数中传递一个函数,该函数以数字形式获取当前系统时间(使用日历),然后将其转换为字母。示例:对于 3.45 三四十五。任何帮助将不胜感激。谢谢
公共类 主活动扩展活动 {
TextView currentv;
GetDate gd;
TextView currentmin;
TextView currentmins;
private Handler mHandler;
private boolean Running = true;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
currentv = (TextView) this.findViewById(R.id.tvtimehour);
currentmin = (TextView) findViewById(R.id.tvtimemin);
currentmins = (TextView) findViewById(R.id.tvtimesecond);
gd = new GetDate();
currentv.setText(gd.calculateTimeHour());
currentmin.setText(gd.calculateTimeMinute());
currentmins.setText(gd.calculateTimeMinuteDigit());
mHandler = new Handler();
Runnable runb = new Runnable(){
@Override
public void run(){
while(Running == true){
try{
Thread.sleep(1000);
}
catch(Exception e){
e.printStackTrace();
}
mHandler.post(new Runnable(){
@Override
public void run(){
currentv.setText(gd.calculateTimeHour());
currentmin.setText(gd.calculateTimeMinute());
currentmins.setText(gd.calculateTimeMinuteDigit());
}
});
}
}
};
new Thread(runb).start();
}
试试这个,
private MyTimerTask mytask;
private Timer timer;
mytask = new MyTimerTask();
timer = new Timer();
timer.schedule(mytask, 0,60000);
计时器类:
class MyTimerTask extends TimerTask {
@Override
public void run() {
// TODO Auto-generated method stub
runOnUiThread(new Runnable() {
public void run() {
// Do your stuff here it will work
currentv.setText(gd.calculateTimeHour());
currentmin.setText(gd.calculateTimeMinute());
currentmins.setText(gd.calculateTimeMinuteDigit());
}
});
}
}
为此
使用计时器,我认为是因为线程无法更新您的 UI。