暂停Android应用，直到按下按钮

Question

I have two methods: go() and stop(), and a for loop looping through these methods 3 times. go() activates automatically when the loop starts and stop() will only activate once a button is pressed 3 times:

private static int buttonPress;

for (int i = 0; i < 3, i++) {
    go();
    do {} while(pressCount < 4);
    stop();
}

Whenever the button the pressed, pressCount is incremented by 1:

public void button(View v) {
    pressCount++;
}

The problem is that with this setup, when the do while loop launches, the app freezes and crashes.

Is there any way to fix this while still having the go() activate before stop(), having stop() activate after pressCount is greater than 3, and looping through 3 times?

Thanks

Answer 1

如果发生这种情况，则阻塞主线程的时间不能超过5秒钟，然后会弹出anr（应用程序无响应）对话框。

Answer 2

try this

private boolean isStop = true;
private int buttonPressedCount = 0;

private void goOrStop() {
    if(isStop) {
      go();
      isStop = false;
    } else {
       stopIfCan(); // :)
    }
}

private void stopIfCan() {
    if(buttonPressedCount >= 3 ) {
        buttonPressedCount = 0; 
        isStop = false;
        stop();
    }
}

public void button(View v) {
    buttonPressedCount++;
}

Answer 3

You cannot pause main thread, the app freezes.

private int loopCount = 0;
private int pressCount = 0;

public void button(View v) { /* Runs when button is clicked */
    if (loopCount < 4){
        pressCount++;

        if (pressCount == 3){
            pressCount = 0;
            loopCount++;
            stop();
        }
    }
}

This code runs stop() when the button is pressed three times, but runs that only three times. (After 9 presses nothing happens)