我正在制作一个项目,当Toast“Fall Detected”出现20秒时,我需要自动启动mp3或任何响亮的声音。谁能告诉我如何启动mp3?
public void onSensorChanged(SensorEvent event)
{
if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER)
{
long curTime = System.currentTimeMillis();
if ((curTime - mLastShakeTime) > MIN_TIME_BETWEEN_SHAKES_MILLISECS)
{
float x = event.values[0];
float y = event.values[1];
float z = event.values[2];
double acceleration = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2) + Math.pow(z, 2)) - SensorManager.GRAVITY_EARTH;
Log.d("mySensor", "Acceleration is " + acceleration + "m/s^2");
if (acceleration < -9.00f && acceleration> -15.00f)
{
mLastShakeTime = curTime;
Toast.makeText(getApplicationContext(), "FALL DETECTED",
Toast.LENGTH_LONG).show();
}
}
}
}
鉴于上下文,您可能需要对“警报”的含义有所了解。在Android中,“闹钟”具体指的是使应用程序在将来特定时间醒来的方法。这是你想要的,还是你在“发出一些噪音”警报之后? – jgm
是的,你是对的,我使用闹钟来唤醒 – Abhishek