我尝试制作一个水平指示器,当手机到达水平位置(使用加速度计)时发出更快的哔哔声,在触摸屏幕后发出哔哔声,如果再次触摸屏幕则停止。
所以我编写了以下代码,我遇到的问题是,由于我添加了“哔”声部分(在 onTouch 事件中调用了 MyRunnable 函数),我的应用程序在几秒钟后崩溃(它可以在几秒钟内正常工作并且构建后我没有错误消息)。
我真的不知道问题可能是什么。我被困在这里,需要一些帮助,谢谢!
公共(public)类 MainActivity 扩展 AppCompatActivity 实现 SensorEventListener,View.OnTouchListener {
Sensor mySensor;
SensorManager SM;
float ANGLEX, ANGLEY, ANGLEZ;
int aX, aY, aZ;
int roundANGLEX, roundANGLEY, roundANGLEZ;
int Xetal, Yetal;
double centre;
int Rcentre;
int Rcentre2;
boolean active;
int test;
int i=0;
private Handler myHandler;
private Runnable myRunnable = new Runnable() {
@Override
public void run() {
// Play a periodic beep which accelerates according to Rcentre2
ToneGenerator toneGen1 = new ToneGenerator(AudioManager.STREAM_MUSIC, 100);
toneGen1.startTone(ToneGenerator.TONE_PROP_BEEP,150);
myHandler.postDelayed(this,(long) Math.sqrt(Rcentre2*20)+50);
}
};
@RequiresApi(api = Build.VERSION_CODES.KITKAT)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Créée notre Sensor Manager
SM = (SensorManager) getSystemService(SENSOR_SERVICE);
//Accéléromètre
mySensor = SM.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
//Registre Sensor Listener
SM.registerListener(this, mySensor, 1000000, 1000000);
((ConstraintLayout) findViewById(R.id.layout_main)).setOnTouchListener((View.OnTouchListener) this);
}
@Override
public void onAccuracyChanged(Sensor sensor, int i) {
//Pas utilisé
}
@Override
public void onSensorChanged(SensorEvent sensorEvent) {
float z_stable = ((int) ((sensorEvent.values[2]) * 100)) / 100.0f;
ANGLEX = (float) (((float) (Math.acos(sensorEvent.values[0] / 9.807)) * (180 / Math.PI))); //I get the accelerometer's values
ANGLEY = (float) (((float) (Math.acos(sensorEvent.values[1] / 9.807)) * (180 / Math.PI)));
ANGLEZ = (float) (((float) (Math.acos(z_stable / 9.807)) * (180 / Math.PI)));
roundANGLEX = Math.round(ANGLEX);
roundANGLEY = Math.round(ANGLEY);
roundANGLEZ = Math.round(ANGLEZ);
aX = roundANGLEX;
aY = roundANGLEY;
aZ = roundANGLEZ;
Xetal = aX - 88; //Xetal and Yetal are 0 when phone is on plane surface
Yetal = aY - 90; //and go from -90 to +90
centre = Math.sqrt(Xetal * Xetal + Yetal * Yetal); //gives the "distance" from the "center => the smaller centre gets, the closer the phone approach horizontal
Rcentre = (int) Math.round(centre);
Rcentre2 = (int) Math.round(centre * 100);
}
public boolean onTouch(View view, MotionEvent motionEvent) {
if (active == true) {
active = false;
myHandler.removeCallbacks(myRunnable);
}
else if (active == false) {
active = true;
myHandler = new Handler();
myHandler.postDelayed(myRunnable,0);
}
return false;
}
}这是 Logcat 信息,它似乎显示了一些问题,但我不知道这意味着什么。
logcat information
最佳答案
我在 ToneGenerator crashes in android 6.0 找到了适合我的答案
“这只是释放创建的 ToneGenerator 对象,因为快速创建 'ToneGenerator' 的对象而不释放它们会导致应用程序崩溃。”
ToneGenerator toneGen1 = new ToneGenerator(AudioManager.STREAM_MUSIC, 100);
toneGen1.startTone(ToneGenerator.TONE_PROP_BEEP,150);
toneGen1.release();
我添加了toneGen1.release();现在它工作正常。
归功于马哈茂德·法拉哈特。
关于android - 为什么哔声会导致应用程序崩溃?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/49296102/