android摇一摇功能实现

来源：互联网发布：mac照片存储位置编辑：程序博客网时间：2024/06/06 00:28

首先要在AndroidManifest添加<uses-permission android:name="android.permission.VIBRATE"/>权限

package com.example.shake;

import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.Vibrator;
import android.app.Activity;
import android.util.Log;
import android.widget.Toast;

public class MainActivity extends Activity {

private SensorManager sensorManager;
private Vibrator vibrator;
private static final String TAG = "TestSensorActivity";
private static final int SENSOR_SHAKE = 10;

@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
  vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);
}

@Override
protected void onResume() {
  // TODO Auto-generated method stub
  super.onResume();
  if (sensorManager != null) {// 注册监听器
   sensorManager.registerListener(sensorEventListener,
     sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
     SensorManager.SENSOR_DELAY_NORMAL);
   // 第一个参数是Listener，第二个参数是所得传感器类型，第三个参数值获取传感器信息的频率
  }
}

@Override
protected void onStop() {
  // TODO Auto-generated method stub
  super.onStop();
  if (sensorManager != null) {// 取消监听器
   sensorManager.unregisterListener(sensorEventListener);
  }
}

private SensorEventListener sensorEventListener = new SensorEventListener() {

  @Override
  public void onAccuracyChanged(Sensor sensor, int accuracy) {
   // TODO Auto-generated method stub

}

  @Override
  public void onSensorChanged(SensorEvent event) {
   // TODO Auto-generated method stub
   // 传感器信息改变时执行该方法
   float[] values = event.values;
   float x = values[0]; // x轴方向的重力加速度，向右为正
   float y = values[1]; // y轴方向的重力加速度，向前为正
   float z = values[2]; // z轴方向的重力加速度，向上为正
   Log.i(TAG, "x轴方向的重力加速度" + x + "；y轴方向的重力加速度" + y + "；z轴方向的重力加速度" + z);
   // 一般在这三个方向的重力加速度达到40就达到了摇晃手机的状态。
   int medumValue = 19;// 三星 i9250怎么晃都不会超过20，没办法，只设置19了
   if (Math.abs(x) > medumValue || Math.abs(y) > medumValue
     || Math.abs(z) > medumValue) {
    vibrator.vibrate(200);
    Message msg = new Message();
    msg.what = SENSOR_SHAKE;
    handler.sendMessage(msg);
   }
  }
};

Handler handler = new Handler() {

  @Override
  public void handleMessage(Message msg) {
   super.handleMessage(msg);
   switch (msg.what) {
   case SENSOR_SHAKE:
    Toast.makeText(MainActivity.this, "检测到摇晃，执行操作！",
      Toast.LENGTH_SHORT).show();
    Log.i(TAG, "检测到摇晃，执行操作！");
    break;
   }
  }
};
}

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