how to pause and stop a changing ImageView
- by user270811
hi,
i have an ImageView in which the picture switches every 5s, i am trying to add a pause and
resume button that can stop and restart the action. i am using a Handler, Runnable, and
postDelay() for image switch, and i put the code on onResume. i am thinking about using
wait and notify for the pause and resume, but that would mean creating an extra thread. so
far for the thread, i have this:
class RecipeDisplayThread extends Thread
{
boolean pleaseWait = false;
// This method is called when the thread runs
public void run() {
while (true) {
// Do work
// Check if should wait
synchronized (this) {
while (pleaseWait) {
try {
wait();
} catch (Exception e) {
}
}
}
// Do work
}
}
}
and in the main activity's onCreate():
Button pauseButton = (Button) findViewById(R.id.pause);
pauseButton.setOnClickListener(new View.OnClickListener()
{
public void onClick(View view)
{
while (true) {
synchronized (thread)
{
thread.pleaseWait = true;
}
}
}
});
Button resumeButton = (Button) findViewById(R.id.resume);
resumeButton.setOnClickListener(new View.OnClickListener()
{
public void onClick(View view)
{
while (true) {
// Resume the thread
synchronized (thread)
{
thread.pleaseWait = false;
thread.notify();
}
}
}
});
the pause button seems to work, but then after that i can't press any other button, such as
the resume button.
thanks.
