摇一摇

太过爱你忘了你带给我的痛 2023-10-17 22:01 9阅读 0赞

MainActivity

public class MainActivity extends Activity implements SensorEventListener {
    
        TextView tv = null;
        SensorManager sensorManager = null;
        Vibrator vibrator = null;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            tv = (TextView) findViewById(R.id.tv);
    
            sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
            vibrator = (Vibrator) getSystemService(Service.VIBRATOR_SERVICE);
        }
    
        @Override
        protected void onPause()
        {
            super.onPause();
            sensorManager.unregisterListener(this);
        }
    
        @Override
        protected void onResume()
        {
            super.onResume();
            sensorManager.registerListener(this,
                    sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
                    SensorManager.SENSOR_DELAY_NORMAL);
        }
    
        @Override
        public void onAccuracyChanged(Sensor sensor, int accuracy)
        {
            //当传感器精度改变时回调该方法，Do nothing.
        }
    
        @Override
        public void onSensorChanged(SensorEvent event)
        {
    
            int sensorType = event.sensor.getType();
            //values[0]:X轴，values[1]：Y轴，values[2]：Z轴
            float[] values = event.values;
            if (sensorType == Sensor.TYPE_ACCELEROMETER)
            {
                if ((Math.abs(values[0]) > 17 || Math.abs(values[1]) > 17 || Math
                        .abs(values[2]) > 17))
                {
    //                Log.d("sensor x ", "============ values[0] = " + values[0]);
    //                Log.d("sensor y ", "============ values[1] = " + values[1]);
    //                Log.d("sensor z ", "============ values[2] = " + values[2]);
                    tv.setText("摇一摇成功!!!");
                    //摇动手机后，再伴随震动提示~~
                    vibrator.vibrate(500);
                    Intent intent = new Intent(this,Main2Activity.class);
                    startActivity(intent);
                }
    
            }
        }
    }

activity\_main 布局：

<?xml version="1.0" encoding="utf-8"?>
    <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context="com.example.MainActivity">
    
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="页面1"/>
    
        <TextView
            android:id="@+id/tv"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="页面 1 "
            android:textSize="40sp"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintTop_toTopOf="parent" />
    
    </android.support.constraint.ConstraintLayout>

Main2Activity

public class Main2Activity extends Activity implements SensorEventListener {
    
        //速度阈值，当摇晃速度达到这值后产生作用
        private static final int SPEED_SHRESHOLD = 200;
        private int TIME = 70;
        SensorManager sensorManager = null;
        Vibrator vibrator = null;
        //手机上一个位置时重力感应坐标
        private float lastX;
        private float lastY;
        private float lastZ;
        //上次检测时间
        private long lastUpdateTime;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main2);
    
            Toast.makeText(this, "页面2", Toast.LENGTH_SHORT).show();
    
            sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
            vibrator = (Vibrator) getSystemService(Service.VIBRATOR_SERVICE);
    
            lastUpdateTime = System.currentTimeMillis();
    
        }
    
        @Override
        protected void onPause()
        {
            super.onPause();
            sensorManager.unregisterListener(this);
        }
    
        @Override
        protected void onResume()
        {
            super.onResume();
            sensorManager.registerListener(this,
                    sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
                    SensorManager.SENSOR_DELAY_NORMAL);
        }
    
        @Override
        public void onSensorChanged(SensorEvent event)
        {
            //现在检测时间
            long currentUpdateTime = System.currentTimeMillis();
    //        Log.d("=====currentUpdateTime", "currentUpdateTime: --> " + currentUpdateTime);
    //        Log.d("======lastUpdateTime", "lastUpdateTime: --> " + lastUpdateTime);
            //两次检测的时间间隔
            long timeInterval = currentUpdateTime - lastUpdateTime;
            Log.d("==========timeInterval", "timeInterval:" + timeInterval);
    
            //判断是否达到了检测时间间隔
            if(timeInterval < TIME&&lastUpdateTime!=0)
                return;
    
            //现在的时间变成last时间
            lastUpdateTime = currentUpdateTime;
    
            //获得x,y,z坐标
            float x = event.values[0];
            float y = event.values[1];
            float z = event.values[2];
    
            //获得x,y,z的变化值
            float deltaX = x - lastX;
            float deltaY = y - lastY;
            float deltaZ = z - lastZ;
    
            //将现在的坐标变成last坐标
            lastX = x;
            lastY = y;
            lastZ = z;
    
            double speed = Math.sqrt(deltaX*deltaX + deltaY*deltaY + deltaZ*deltaZ)/timeInterval * 10000;
            //达到速度阀值，发出提示
            if(speed >= SPEED_SHRESHOLD)
                Log.d("=========speed", "正在晃动");
            else {
                Toast.makeText(this, "停止摇动", Toast.LENGTH_SHORT).show();
                Intent intent = new Intent(this,MainActivity.class);
                startActivity(intent);
            }
    
        }
    
        @Override
        public void onAccuracyChanged(Sensor sensor, int accuracy) {
    //        Log.d("==========accuracy", accuracy + "");
    //        if (accuracy>0&&accuracy<3){
    //            Toast.makeText(this, "停止摇动", Toast.LENGTH_SHORT).show();
    //            Intent intent = new Intent(this,MainActivity.class);
    //            startActivity(intent);
    //        }
    
        }
    }

activity\_main2 布局：

<?xml version="1.0" encoding="utf-8"?>
    <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context="com.example.Main2Activity">
    
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="页面2"/>
    
        <TextView
            android:id="@+id/tv"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="页面 2 "
            android:textSize="40sp"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintTop_toTopOf="parent" />
    
    </android.support.constraint.ConstraintLayout>