如何设置一个计时器TextView?此代码总是崩溃我的应用程序 final TextView textwel = (TextView) findViewById(R.id.welcometext);
Thread timer = new Thread() {
public void run() {
try {
// this should sleep for
我想创建某种计数时间,并通知我,当在不同的定时闹钟具有多种报警(定时): private List<SomeTime> timings; //can also be just the seconds to count
public void run() {
while(counting) {
//if any of the timings is reached do so
我试图通过20次尝试每循环睡眠3000毫秒来限制循环中进程的尝试到60秒。调用Thread.sleep()并不是在正在运行的线程中暂停执行,相反,所有20次尝试都是连续发生的。 private void pollWebServiceForToken() {
final int pollInterval = 3000;
new Thread() {
@Override
我试图使文本框的颜色更改为绿色,然后作为确认方法淡化为白色。这是我迄今的代码: private void btnCommit_Click(object sender, EventArgs e)
{
//do stuff
Color c = new Color();
for (int i = 0; i <= 255; i++)
{
c = Co