啥也不说了，直接来码
public class TimerTestActivity extends Activity {
private TextView txt;
private Handler handler = new Handler();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
txt = (TextView) findViewById(R.id.txt);
txt.setText("0.00");
// txt.setText("0");
startTimer();
}
private void startTimer() {
handler.removeCallbacks(run);
handler.postDelayed(run, 50);
}
private Runnable run = new Runnable() {
@Override
public void run() {
String str;
if (txt.getText().toString().indexOf(",") >= 0) {
str = txt.getText().toString().replace(",", "");
} else {
str = txt.getText().toString();
}
double s = Double.parseDouble(str);
double trueS = 7676.87;
double i = 0;
if (trueS > 99999) {
i = s + 42131.12;
} else if (trueS > 9999) {
i = s + 4213.21;
} else if (trueS > 999) {
i = s + 402.12;
} else if (trueS > 99) {
i = s + 41.21;
} else {
i = s + 4.11;
}
if (i < (trueS - trueS / 10)) {
double d = Double.parseDouble(String.format("%.2f", i));
String strI = String.valueOf(d);
if (strI.length() <= 6) {
txt.setText(strI);
} else if (strI.length() > 6 && strI.length() <= 9) {
txt.setText(strI.substring(0, strI.length() - 6) + ","
+ strI.substring(strI.length() - 6));
} else {
txt.setText(strI.substring(0, strI.length() - 9)
+ ","
+ strI.substring(strI.length() - 9,
strI.length() - 6) + ","
+ strI.substring(strI.length() - 6));
}
} else {
String stt = "7676.87";
if (stt.length() <= 6) {
txt.setText(stt);
} else if (stt.length() > 6 && stt.length() <= 9) {
txt.setText(stt.substring(0, stt.length() - 6) + ","
+ stt.substring(stt.length() - 6));
} else {
txt.setText(stt.substring(0, stt.length() - 9) + ","
+ stt.substring(stt.length() - 9, stt.length() - 6)
+ "," + stt.substring(stt.length() - 6));
}
}
if (i < trueS) {
handler.postDelayed(run, 50);
}
}
};
}